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The Complete Guide to Site and Excavation

For AMN Construction crews on the Santa Barbara South Coast, from the first day on a dig site to planning a hillside Montecito lot. Current as of 2026-11-02. Not engineering advice and not a permit decision.

How to use this guide

Read the sections in order for your stage: Day 1 first, then Year 1, then Journeyman and Master. Each section has the facts, a hands-on task, a self-check and links to the matching math scenes and tools. The same ids are used on the math page and the tools page, so the links jump straight to the scene or tool.

Confidence chips

S Sourced: a primary source or two sources agree. Source numbers link to the list at the end.P Crew practice: how we work, not from a code.verify Verify: believed right, confirm before you rely on it.C Contested: sources conflict; confirm with the authority (building official or Cal/OSHA).? Unverified: not found in the research.calc Calc: worked arithmetic from a formula; check the inputs.

Four flags to keep in mind

  • S 20 ft engineer rule (now sourced). Table B-1 slopes cover excavations under 20 ft; sloping or benching deeper than 20 ft must be designed by a registered professional engineer. See Trench safety. S23 S24
  • C City of Santa Barbara construction hours (7 am to 8 pm) do not apply in Montecito. Montecito is County land. A Montecito resident group lists County hours as 7:00 am to 4:30 pm Monday to Friday, none on State holidays (secondary, not a code section); County Code Ch. 40 covers only nighttime amplified noise. Confirm hours in your permit conditions. See Montecito and Santa Barbara local rules.
  • verify The 96-hour post-rain inspection is only for Risk Level 2 and 3 stormwater projects. See Erosion and stormwater control.
  • C The state Construction General Permit threshold is more than 1 acre of disturbance (plus smaller sites in a larger plan), not "1 acre or more".

Where a code number is cited, the text of the current adopted edition and any County or City amendment decide. A few numbers are crew-practice values; those carry the practice or verify chip.

1. Day 1: site safety and PPE

Stage: Day 1

  • Wear hard hat, hi-vis, safety glasses, boots and gloves from the truck door in; add hearing protection near compactors, saws and machines. P
  • You may not enter any trench until a competent person has inspected it that day. S S1S1 s1541(k)
  • A competent person re-inspects as needed during the shift and after rainstorms or anything that raises the hazard; if a hazard is found, everyone leaves until it is fixed. S S1
  • Cave-in is the top trench hazard. S S21
  • Keep spoil, tools and equipment at least 2 ft from the edge of any excavation. S S1S1 s1541(j)(2)
  • If you hit something unexpected (pipe, wire, tank), stop, step back and call the lead. Do not pull on it. P
  • Dust from concrete, rock and dry soil: wet it down and wear a mask. Exact silica limits were not researched. P?

Try it

Walk a mock site with your lead: point to each PPE item, find the nearest trench exit, and name who the competent person is.

Check yourself

  1. How far back must spoil sit from a trench edge?
    Show answer

    At least 2 ft (Cal/OSHA 1541(j)(2)).

  2. Who decides if a trench is safe to enter today?
    Show answer

    The competent person after the daily inspection.

  3. What do you do after a rainstorm?
    Show answer

    Wait for a fresh competent-person inspection before entering.

  4. A shovel hits metal. What now?
    Show answer

    Stop, back away, tell the lead.

Math scenes: Protection check

Tools in 3D for this section

Safety and shoring: Trench shield (trench box) · Hydraulic shoring · Trench ladder or ramp · Four-gas monitor · Steel road plates · Barricades and caution tape · Hard hat and hi-vis vest · Safety glasses and hearing protection · Respirator or dust mask · Work boots and gloves

2. Reading the plans and reports

Stage: Day 1

  • Before digging, find four documents: geotechnical report, grading plan, stormwater plan, utility map. P?
  • The geotech report sets compaction percentages and fill rules for fill under footings. S S6S6 CBC 1803/1804
  • Fill 12 in. deep or less is exempt from the geotech report but still needs 90% of maximum dry density (ASTM D1557) and special inspection. S S6
  • Cut/fill/import/export yardage and disturbed area are numbers the County grading form asks for. Sverify S13
  • Spot elevations and slope arrows tell you where water goes; read the arrows before you stake.
  • If a plan and a field condition disagree, stop and ask; do not guess. P

Try it

Take the plan set for a past job. List cut/fill yards, the spec compaction percent, and the stormwater BMPs shown.

Check yourself

  1. Which document sets compaction targets?
    Show answer

    The geotechnical report.

  2. Is fill 12 in. or less exempt from compaction?
    Show answer

    No: only the report is exempt; 90% of D1557 and special inspection still apply.

  3. What do you do if the plan and field disagree?
    Show answer

    Stop and ask the lead or engineer.

3. Underground utilities and 811

Stage: Day 1

  • Anyone who digs with their own people or equipment is an excavator and must notify the one-call center (811) first. S S8S8 Gov Code 4216
  • Notify at least 2 working days before digging, no more than 14 calendar days ahead. The call day does not count. S S5
  • Call Monday, dig Wednesday is the pattern; call Thursday and Monday is the earliest. S S5
  • Tickets are valid for 28 days. Marks are valid while reasonably visible and the ticket is valid. S S5
  • The tolerance zone is 24 in. each side of the mark; inside it, expose lines by hand or vacuum, not with a bucket. S? S8E for zone width; hand-digging wording U
  • Cal/OSHA 1541(b) also requires locating, marking, notifying owners and protecting lines while the excavation is open. S S1
  • Emergency exception for sudden danger such as fire or flood. S S8
  • Which regional center serves Santa Barbara County was not confirmed; dialing 811 routes the call. ?

Try it

Given a call date, state the earliest and latest dig dates. Use the 811 earliest dig day calculator.

Check yourself

  1. You call Wednesday. Earliest dig day?
    Show answer

    Friday.

  2. How long is a ticket good?
    Show answer

    28 days.

  3. How wide is the tolerance zone?
    Show answer

    24 in. each side of the mark.

  4. May you dig inside the zone with the bucket?
    Show answer

    No: hand dig or vacuum to expose the line.

Math scenes: 811 earliest dig day

Tools in 3D for this section

Utility locating: Marking paint and flags · Electromagnetic utility locator · Vacuum excavator (potholing) · Tracer wire and warning tape

4. Hand tools and layout

Stage: Day 1

  • Round-point shovel digs; flat shovel squares trench floors and moves gravel. P
  • Pick mattock and digging bar break hard ground and rock; never swing into a line you have not located. P
  • Tape, stakes, mason line and a 4-ft level set the dig lines; mark cut or fill on the stake face. P
  • A rotary laser or builder's level with a rod gives elevations from a benchmark; check against the benchmark each morning and after the tripod is bumped. P
  • Marking paint: white for your dig outline; locators use their own colors. Photograph marks before you dig. SP S5S5 for validitypractice for photos
  • Read from a taut, level tape; a sagging tape lies. P

Try it

Stake a 20 ft x 3 ft trench with offset stakes and string. Your lead checks length within 1 in.

Check yourself

  1. What goes on a grade stake face?
    Show answer

    The cut or fill depth to the finished grade.

  2. Why check a laser against a benchmark?
    Show answer

    The tripod can shift; a check catches it.

  3. What is a flat shovel for?
    Show answer

    Squaring the trench floor and handling base.

Tools in 3D for this section

Hand tools: Round-point shovel · Flat (square-point) shovel · Pick mattock · Digging bar (pry bar) · Hand tamper · Wheelbarrow

Layout and grade: 100-ft tape measure · 4-ft level · Builder's level and grade rod · Rotary laser level and receiver · Grade stakes, lath and mason line · Plumb bob

5. Soil types and slopes

Stage: Year 1

  • Soil type controls how steep you may cut. Type A 3/4:1 (53 deg), Type B 1:1 (45 deg), Type C 1.5:1 (34 deg). S S10
  • If the soil is not classified, use 1.5:1 (34 deg). S S2
  • Cracks, slumping, bulging or falling pebbles are warning signs: stop, back everyone out and cut back flatter. S S10W3 from S10 App B
  • Surcharge: spoil piles, equipment and traffic add load near the edge; keep them back or flatten the slope. S S1
  • Soil classification (Appendix A) uses simple tests; a competent person does it, and USCS/ASTM D2487 appears on geotech reports. ?
  • Expansive and clay soils occur on parts of the South Coast; the geotech report will say. ?local context, U

Try it

On a sketch, draw a 10 ft deep cut at A, B and C and compute the run for each with the minimum run calculator.

Check yourself

  1. Run for a 10 ft cut in Type C?
    Show answer

    15 ft.

  2. What slope do you use if soil is unclassified?
    Show answer

    1.5:1.

  3. Name two warning signs of a failing wall.
    Show answer

    Cracks and slumping (also bulging, falling pebbles).

Math scenes: Minimum run by soil type · Slope ratio to run and angle · Slope face length

6. Trench safety under Cal/OSHA

Stage: Year 1

S The 20 ft engineer rule

Cal/OSHA Appendix B (Table B-1 notes, S24) says the table values cover excavations less than 20 ft deep and that sloping or benching for excavations greater than 20 ft deep must be designed by a registered professional engineer. The s1541.1 guidance figures (S23) say the same for protective systems deeper than 20 ft, and separately a PE must design any system outside Options 1-3 (s1541.1(b)(4), (c)(4)). Type A soil: a short-term 1/2:1 (63 deg) slope is allowed only for cuts 12 ft or less deep; deeper Type A cuts use 3/4:1 (S24). That 12 ft Type A note applies only to short-term (open 24 hours or less) work.

  • Protective system (shield, shoring or sloping) required for excavations 5 ft or deeper; under 5 ft is exempt only if a competent person finds no sign of cave-in; stable rock is exempt. S S2
  • Cal/OSHA excavation permit: required for excavations 5 ft or deeper that a person will enter (annual or project permit); not for excavations nobody enters. S S3
  • Trenches 4 ft or deeper need a ladder, stair or ramp so no one travels more than 25 ft to exit. S S1
  • Test the air before entering any excavation deeper than 4 ft when a hazardous atmosphere could exist; oxygen under 19.5% is deficient; flammables under 20% of LEL. S S1
  • Shield sides extend at least 18 in. above vertical walls of compound excavations. S S2
  • A registered PE must design protective systems outside Options 1-3; Table B-1 applies only under 20 ft. The 20 ft depth wording is not on the s1541.1 page. verify in Appendix text before relying on it. C
  • Never dig below the bottom of the shield; keep workers inside the box. P

Try it

Walk a real or mock trench: measure depth to the bottom, name the protection required, ladder location, and who tests the air.

Check yourself

  1. At what depth is protection required (no exemption)?
    Show answer

    5 ft or deeper.

  2. Ladder trigger and travel?
    Show answer

    4 ft deep; no more than 25 ft.

  3. Atmosphere test trigger?
    Show answer

    Deeper than 4 ft where hazardous air is possible.

  4. Shield height above a vertical wall?
    Show answer

    At least 18 in. (compound excavations).

Math scenes: Protection check

Tools in 3D for this section

Safety and shoring: Trench shield (trench box) · Hydraulic shoring · Trench ladder or ramp · Four-gas monitor · Steel road plates · Barricades and caution tape · Hard hat and hi-vis vest · Safety glasses and hearing protection · Respirator or dust mask · Work boots and gloves

7. Machines, spoil and haul

Stage: Year 1

  • Mini excavator, skid steer, backhoe and dump truck each have a daily inspection and a swing/blind area that must stay clear.
  • Seat belts on; spotters when backing near people or the street. P
  • Keep the bucket low when traveling; do not turn on a slope with a loaded bucket. P
  • Dug soil swells: plan 20-40% more volume in the truck (practice value, verify on your soils report). ?
  • Overhead power lines: keep the boom away and ask the lead for the required distance. ?
  • Tickets for every load: they back up the cut/fill/import/export numbers. SP S13

Try it

Compute truck loads for a 60 ft x 2 ft x 4 ft trench with the haul loads calculator and match to the plan.

Check yourself

  1. Why does a truck load more yards than the trench?
    Show answer

    Soil swells when dug.

  2. Where does the bucket ride when traveling?
    Show answer

    Low.

  3. Why keep load tickets?
    Show answer

    They verify import/export quantities.

Math scenes: Haul truck loads

Tools in 3D for this section

Machines: Chainsaw · Mini excavator · Backhoe loader · Skid steer loader · Dump truck · Breaker or demolition hammer · Concrete and asphalt saw · Trash pump · Water truck or hose for dust control

8. Sequence of site work

Stage: Year 1

  • 1 Paper check; 2 811 and potholing; 3 erosion controls and entrance; 4 clear, strip, stockpile; 5 rough excavation; 6 protect trenches; 7 pipe, bedding, backfill in tested lifts; 8 final grade and stabilize. P S1 S2 S5 S9W3 practice; S1 S2 S5 S9 for rules
  • Install the entrance pad and perimeter sediment controls before bulk grading. P S9S9 principle; practice
  • Strip and stockpile topsoil away from the trench edge and drains. P
  • Backfill in lifts and test each lift before the next. P S6S6 CBC; practice
  • Allow for settlement when setting final grade; ground slopes away 5% for 10 ft. S S6
  • Typical inspection order (verify with the jurisdiction): grading/site, footing, underground utilities and drains before backfill, slab, final grade/drainage. ?

Try it

Write a one-page sequence for a driveway and utility trench job, with 3 inspection holds.

Check yourself

  1. Which comes first, grading or erosion controls?
    Show answer

    Erosion controls.

  2. When do you backfill a pipe trench?
    Show answer

    After inspection, in tested lifts.

  3. Why leave final grade slightly high?
    Show answer

    Backfill settles.

9. Grading and drainage

Stage: Year 1

  • Ground next to the foundation must slope away at least 5% for 10 ft (about 6 in. in 10 ft). If lot lines prevent 10 ft, use an approved diversion. S S6
  • Swales and paved surfaces within 10 ft of the building slope at least 2% away. S S6
  • Plans show how surface water stays out of the building (CALGreen Division 4.1). S S6
  • Perforated drain pipe: holes oriented per the plan, steady fall to the outlet, wrapped in fabric, covered with clean drain rock. P?practice, U on specifics
  • Do not discharge pump water into storm drains or toward neighbors. P
  • Foundation excavation must not undermine the home's or a neighbor's footing; underpin first. S S6S6 1804.1-1804.2

Try it

Set a 5% grade over 10 ft with stakes and a string; verify a 6 in. drop with a level.

Check yourself

  1. Minimum slope away from a foundation?
    Show answer

    5% for 10 ft.

  2. Minimum for paved areas within 10 ft?
    Show answer

    2%.

  3. Drop in 10 ft at 5%?
    Show answer

    6 in.

Math scenes: Drainage slope away from the house

Tools in 3D for this section

Layout and grade: 100-ft tape measure · 4-ft level · Builder's level and grade rod · Rotary laser level and receiver · Grade stakes, lath and mason line · Plumb bob

Base and drainage: Aggregate base (Class II) · Bedding sand · Import fill soil · Geotextile fabric · Drain rock · Perforated drain pipe · Sewer and drain pipe

10. Compaction and testing

Stage: Year 1

  • Compacted fill under footings follows the geotech report; testing is to ASTM D1557 maximum dry density; special inspection applies. S S6
  • Montecito Fire: fire-access road base is 5 in. Class II compacted to 95%. S S12E, 2019 edition
  • Plate compactors and jumping jacks work in thin lifts with overlapping passes; lift thickness is per the spec. P?
  • Nuclear gauge method is ASTM D6938; a licensed operator handles the source. S S22
  • Sand cone is the non-nuclear check; get a Proctor again if the soil source changes. P
  • Moisture matters: too wet pumps, too dry will not pack. P

Try it

Compute the target density for a 95% spec on 125 pcf soil with the target compaction calculator (118.75).

Check yourself

  1. What standard sets max dry density?
    Show answer

    ASTM D1557.

  2. Fire-access base compaction?
    Show answer

    95% (Montecito Fire 2019).

  3. Who runs a nuclear gauge?
    Show answer

    A licensed operator.

Math scenes: Target compaction

Tools in 3D for this section

Compaction and testing: Vibratory roller · Vibratory plate compactor · Jumping jack tamper · Nuclear density gauge · Sand cone density kit · Proctor sampling (lab test) · Field moisture tester (speedy or oven)

11. Pipe, bedding and backfill

Stage: Year 1

  • Set pipe on a prepared bed to the plan grade; check fall at every joint. P
  • Fall in feet = length x grade percent / 100; 80 ft at 1% = 0.8 ft (9.6 in.). Grade comes from the plan/code: not found. ?calc
  • Use clean sand or the specified bedding; no sharp rocks touching the pipe. P
  • Lay tracer wire and warning tape above new lines. Tape depth and color: verify. ?
  • Backfill beside the foundation with clean soil free of organics, debris, cobbles or boulders, or CLSM, in lifts. S S6S6 1804.3
  • Inspect before you backfill. P

Try it

Compute fall for 120 ft at 2% (2.4 ft) and mark two grade stakes.

Check yourself

  1. What can't be in backfill next to a foundation?
    Show answer

    Organics, debris, cobbles or boulders.

  2. What do you do before backfilling a pipe?
    Show answer

    Get the inspection.

  3. Fall for 100 ft at 1%?
    Show answer

    1 ft.

Math scenes: Pipe fall

Tools in 3D for this section

Base and drainage: Aggregate base (Class II) · Bedding sand · Import fill soil · Geotextile fabric · Drain rock · Perforated drain pipe · Sewer and drain pipe

12. Erosion and stormwater control

Stage: Year 1

verify The 96-hour post-rain inspection is only for Risk Level 2 and 3

Projects at Risk Level 1 do not get that inspection rule from the sources read. Check your SWPPP for the site risk level before you plan inspections.

C The state Construction General Permit threshold is more than 1 acre

Disturbance of more than 1 acre, plus smaller sites that are part of a larger plan (S9). One worker file said "one acre or more"; the permit FAQ says more than 1 acre, which is what this guide uses. All projects still keep year-round BMPs until the site is stabilized.

  • All projects keep year-round BMPs until the site is stabilized. S S9
  • State Construction General Permit applies to disturbance of more than 1 acre (and smaller sites inside a larger plan). S S9
  • Weekly BMP inspections, plus pre-storm (within 72 hrs; up to 120 hrs with NWS extended forecast), every 24 hrs during storms, and within 96 hrs after an event of 0.5 in. or more (Risk Level 2-3). S S9
  • Fiber rolls: trench 1/4-1/3 roll thickness, stakes no more than 4 ft apart, rolls up to 20 ft apart on 4:1 slopes, 10 ft on 2:1 or steeper. S S20
  • Silt fence on the contour with ends turned uphill; post spacing and burial depth not found. P?
  • County Stormwater Control Plan trigger: new or replaced impervious surface over 2,500 sq ft. Sverify S13
  • City records show Pre-Grade QSP, Rough Stormwater/QSP and Final QSP inspections. S S16

Try it

Compute fiber roll spacing for a 24 ft tall 2:1 slope and list the BMP inspection dates for a 0.6 in. storm.

Check yourself

  1. Rain gauge 0.6 in. ends Tue 4 pm (RL2-3). Inspection due?
    Show answer

    By Sat 4 pm (96 hrs).

  2. Stake spacing max?
    Show answer

    4 ft.

  3. Is the 1-acre rule the only erosion rule?
    Show answer

    No: year-round BMPs and local rules also apply.

Math scenes: Post-rain inspection deadline

Tools in 3D for this section

Erosion control: Silt fence · Fiber rolls (straw wattles) · Erosion control blanket · Straw mulch and hydroseed · Gravel bags and inlet protection · Stabilized construction entrance · Concrete washout

13. Quantities, take-off and haul math

Stage: Year 1

  • Volume: length x width x depth / 27 gives cubic yards. calc
  • Loose volume = bank x swell; loads = round up(loose / truck). Swell 1.25 is a practice value: verify. ?calc
  • Aggregate tons = cubic yards x tons per yard (about 1.4 as a practice value: use the supplier ticket). ?calc
  • Overage: area x (1 + waste). calc
  • Cut/fill balance: cut x (1 - shrink) - fill; shrink from the soils report. ?calc
  • Always convert inches to feet before multiplying. calc

Try it

Complete all 14 calculators once with the example numbers and compare to the answers.

Check yourself

  1. Cubic yards in 540 cu ft?
    Show answer

    20.

  2. Why round loads up?
    Show answer

    A partial load still needs a truck.

  3. What is 6 in. in feet?
    Show answer

    0.5.

Math scenes: Trench volume · Haul truck loads · Aggregate tonnage · Material overage · Cut and fill balance

14. Costly failures and how to prevent them

Stage: Journeyman and Master

  • Trench collapse: protection in place before entry. S S2
  • Cut too steep for the soil: classify soil and use the table. S S10
  • Utility strike: 811 plus potholing. Cal/OSHA 1541(b)(3) requires finding the exact location by "safe and acceptable means" near an installation; within 10 ft of a high-priority line (high-pressure gas, petroleum, pressurized sewer) the owner and excavator hold an on-site meeting first. S S5 S1
  • Edge surcharge: setback at least 2 ft and more with heavy equipment. S S1
  • Ignored warning signs: stop and cut back. S S10
  • Missed stormwater inspection: schedule it. S S9
  • Under-compacted fill: test each lift. S S6
  • Wrong quantities: use the calculators and check the ticket. P

Try it

Pick the last failure you saw and write what rule would have caught it.

Check yourself

  1. Top trench hazard?
    Show answer

    Cave-in.

  2. How to avoid a utility strike?
    Show answer

    Call 811, wait, expose by hand.

  3. What catches wrong quantities?
    Show answer

    Calculators and delivery tickets.

15. Codes, permits and licensing

Stage: Journeyman and Master

  • County of Santa Barbara Code Sec. 10-2.1.1 adopts the California Building Code, 2025 Edition, as amended (Ord. No. 5270, 11-18-2025); the mirror page does not state an effective date, and the statewide edition is effective 2026-01-01. County Appendix amendments adopt C, G, I and P, and Appendix J is not mentioned. S S25 mirror of the County Code; confirm with P&D
  • The 2025 California Building Code is shown effective 2026-01-01; the City of Santa Barbara adopted its own amendments on 2025-12-02 (City source is a CEQA notice). S? S6E; U for local S33
  • CRC governs most single-family houses; its Chapter 4 text was not read. ?
  • CSLB C-12 Earthwork and Paving covers cuts, fills, grades, trenches, backfill and paving, excluding water work. S S7
  • County building permit is not required for a retaining wall 4 ft or less (footing bottom to top of wall) unless it carries a surcharge or impounds Class I, II or III-A liquids; exempt wood fences are up to 8 ft and other fences up to 6 ft (Sec. 10-1.6.1, 105.2). Engineer and geotech triggers beyond this were not found. S S27 E, mirror
  • Whether AMN's Class B license covers incidental earthwork or retaining walls was not found: ask CSLB. ?
  • Cal/OSHA excavation permit: 5 ft or deeper if a person enters. S S3
  • County Grading Code (Ch. 14) applies to all unincorporated territory. It covers new grading over 50 cubic yards, any cut or fill over 3 ft vertically from natural contour, any change within the watercourse setback, or disturbance above the area thresholds in Sec. 14-9.2(b). Utility trenches up to 24 in wide or averaging 5 ft deep, and excavation for footings, pools, basements and tanks under a valid building permit, are exempt (fill over 50 cu yd is not). No grading may cause a significant environmental impact, and the County can require a permit for exempt work (Sec. 14-6). Mirror text; confirm with P&D. S S26E, mirror
  • County erosion-control permit (Sec. 14-9.2(b)): under 50 cu yd and 3 ft but disturbance of 1 acre or more, or 5,000 sq ft or more on slopes over 30%, or 5,000 sq ft or more inside the watercourse setback (50 ft urban, 100 ft rural from top of bank). Starting without a permit costs a double fee (Sec. 14-16). S S26E, mirror
  • County grading inspections (Sec. 14-18(e)): give 24 hours notice; inspect before the cut passes 10 ft deep and before fill passes 10 ft high, plus pre-construction, toe/bench/keyway, drainage, rough and final. From Nov 1 to Apr 15 expect at least two County inspections a month on open grading of 1 acre or more. S S26E, mirror
  • Flood hazard area fill rules apply only if the lot is mapped. S S6

Try it

List the permits you would check before opening ground on a hillside lot in Montecito.

Check yourself

  1. Which CSLB class is earthwork?
    Show answer

    C-12.

  2. Who sets grading thresholds?
    Show answer

    The local jurisdiction.

  3. Is the 2025 CBC adoption date the same everywhere?
    Show answer

    Not necessarily: verify local adoption.

16. Montecito and Santa Barbara local rules

Stage: Journeyman and Master

C The City of Santa Barbara 7 am to 8 pm construction hours do not apply in Montecito

Montecito is unincorporated County land. The City hours come from the City Noise Guide and permit packet (S15, S16). No County construction-hours code section was found. The Montecito Association FAQ (S29) lists County construction hours as 7:00 am to 4:30 pm Monday to Friday with none on State holidays, and gives the County zoning violation hotline as 568-3558; this is a third-party summary, so read the hours in your permit conditions. County Code Ch. 40 bans loud amplified sound 10 pm to 7 am Sunday to Thursday nights and midnight to 7 am Friday and Saturday nights; it does not mention construction (S28).

  • Montecito is unincorporated County of Santa Barbara; the City of Santa Barbara is separate. S S13 S14
  • County permits go through P&D, 123 E. Anapamu St, (805) 568-2000. Sverify S13
  • City Building & Safety: 630 Garden St, (805) 564-5485. S S16
  • City construction hours: 7 am to 8 pm daily for standard projects; large conditioned projects 7-5 weekdays and 9-4 Saturdays, none on Sundays and holidays. County hours: 7:00 am to 4:30 pm Monday to Friday per a Montecito Association summary (secondary; check permit conditions). S? S15E City; County secondary
  • City self-certified grading: hillside design district only, more than 40 and less than 50 cu yd in 5 years. Not a County program in what was found. S S14
  • Montecito Fire 2025 Development Standards (Nov 2025, updated 02.02.2026): defensible space 100 ft (Zone 0 is 0-5 ft, Zone 1 5-30 ft, Zone 2 30-100 ft; Zone 0 applies to new construction starting 2026-01-01); access road base 5 in. Class II at 95% relative compaction plus sealcoat; paved width 14 ft for one dwelling, 16 ft for 2-4, 20 ft for 5 or more; max grade 15% (20% with approval); grades over 10% need civil engineer certification, over 15% broom-finish concrete; dead-end turnaround required at 150 ft or more (80 ft bulb, max 5% slope). S S31 S12E, 2025 edition
  • Montecito Fire adopted the 2025 California Fire Code and 2025 WUI Code by Ordinance 2025-02 (final passage 2025-11-17, effective about 30 days later), repealing Ordinance 2022-01. It amends gates (at least 30 ft from the road edge, open inward, back-up power, approved key switch) and requires 13 ft 6 in vertical clearance; it has no grading-specific amendment. Fire Marshal line for development standards: 805-969-1445; main line (805) 969-7762. S S30 S31E
  • County: stormwater control plan above 2,500 sq ft new/replaced impervious surface. Sverify S13
  • Still not found: Coastal Zone, debris-flow and Montecito BAR rules for grading; County-published (primary) construction hours. ?

Local rules in detail: confirmed and unconfirmed

As of 2026-11-02. Montecito is unincorporated County of Santa Barbara; the City of Santa Barbara is a separate jurisdiction. Nothing here is a permit decision: confirm with the office that serves the lot before you bid.

Who is who

ItemCounty (incl. Montecito)City of Santa Barbara
Permit officeCounty Planning & Development (P&D), 123 E. Anapamu St, Santa Barbara 93101, (805) 568-2000; intake (805) 568-2090; www.sbcountyplanning.org S13 CONFIRMED (form reproduction; verify)Community Development, Building & Safety, 630 Garden St, (805) 564-5485 S16 CONFIRMED
FireMontecito Fire Protection District, Station 1, 595 San Ysidro Rd, www.montecitofire.com; main (805) 969-7762; Fire Marshal 805-969-1445 (development standards) S30 S31 CONFIRMEDCity Fire (not researched) UNCONFIRMED
Code editionCounty Code Sec. 10-2.1.1 adopts the 2025 California Building Code as amended (Ord. 5270, 11-18-2025; effective date not shown on the mirror) S25; State edition effective 2026-01-01 S6. Montecito Fire adopted the 2025 Fire and WUI Codes (Ord. 2025-02) S31. County Fire (not Montecito) projected 2026-01-01 for its 2025 Fire Code S32. CONFIRMED (mirror; verify effective date)City adopted amendments to its Municipal Code and the State building standards on 2025-12-02; wall permit threshold rises from 3.5 ft to 5 ft; WUI Code becomes standalone S33 (CEQA notice, secondary). Packet (Feb 2026) cites CRC R314/R315 S16.

Confirmed in the research (still verify the current text)

RuleJurisdictionSource
Grading Code Ch. 14 applies in all unincorporated territory; permit when grading exceeds 50 cu yd, any cut/fill over 3 ft, any change inside the watercourse setback (50 ft urban, 100 ft rural), or disturbance over the Sec. 14-9.2(b) areas. Exempt: utility trenches up to 24 in wide or averaging 5 ft deep; excavation for footings, pools, basements, tanks under a building permit (fill over 50 cu yd still needs a permit); non-agricultural disturbance under 1 acre outside sensitive areas and the setbackCountyS26 (mirror; verify)
Grading inspections: 24 hours notice; before cuts pass 10 ft deep and fills pass 10 ft high; Nov 1 to Apr 15 at least two inspections a month on open grading of 1 acre or more; double fee for starting without a permitCountyS26 (mirror; verify)
Building permit exemptions: retaining wall 4 ft or less (footing bottom to top) unless surcharged; wood fence up to 8 ft, other fence up to 6 ftCountyS27 (mirror; verify)
City: building permit for walls now above 5 ft (was 3.5 ft), excluding retaining and non-retaining block walls per the noticeCity onlyS33 (CEQA notice)
Nighttime noise: loud amplified sound clearly heard 100 ft away or above 60 dB at the property line is banned 10 pm to 7 am Sun-Thu nights, midnight to 7 am Fri-Sat nights; fines $100 / $200 / $500; construction is not mentionedCountyS28 (mirror; verify)
County grading permit (GRD) is on the combined P&D form; form asks cut, fill, import, export (cu yd), disturbed area, max slope, retaining wall heightCountyS13 (third-party reproduction; verify)
Lots with slope 20% or more and ridgeline/hillside sites are flagged on the County form (no rule stated)CountyS13
New/replaced impervious surface over 2,500 sq ft triggers a Stormwater Control Plan on the County formCountyS13 (verify threshold vs current code)
Self-certified grading for hillside lots: Hillside Design District only, more than 40 and less than 50 cu yd in any 5 years; form filed with Building & Safety; at least 20% audited yearly; effective 2020-11-20City onlyS14
City construction hours (standard projects): 7:00 a.m. to 8:00 p.m. every day. Large projects with Planning Commission conditions: weekdays 7-5, Saturdays 9-4, no Sundays/legal holidays. After-hours waiver letter to Building & Safety, authorized by Chief Building Official at least one week before. (Permit packet cites SBMC 9.16.040)City onlyS15, S16
City inspection record lists Pre-Grade QSP, Rough Stormwater/QSP, Final QSP, erosion control and block-wall/retaining-wall inspectionsCityS16
Vegetation Management Plan for all new construction in High/Very High fire hazard areas; defensible space 100 ft (Zone I 0-30, Zone II 30-100)Montecito Fire districtS12 (2019); superseded by S31 (2025 standards, above)
Fire access road: base is 5 in. Class II base compacted to 95% then emulsion sealcoat; width 14 ft single parcel, 16 ft 2-4 parcels, 20 ft 5+; max grade 15% (20% with extenuating circumstances); grades over 10% need civil engineer certification; 80 ft dead-end turnaround bulb for runs 150 ft or more; access approved before framingMontecito Fire districtS12 (2019); 2025 figures confirmed in S31
Hydrant spacing 500 ft (urban/rural neighborhood), 600 ft rural; fire flow 500 gpm residential at 20 psi; hydrants in before combustiblesMontecito Fire districtS12
Water tank if purveyor cannot supply: min 5,000 gal up to 2,500 sq ft plus 2 gal per extra sq ft; engineer plans; operational before framingMontecito Fire districtS12
Statewide (applies in both): 811 / Gov Code 4216 notice 2 working days minimum, 14 calendar days max, ticket valid 28 days; Cal/OSHA permit for excavations 5 ft or deeper that a person enters; protective system at 5 ftStateS5, S3, S2

Unconfirmed: not found, ask the agency

  • County construction work hours as a published County rule (secondary summary only: 7:00 am to 4:30 pm Mon-Fri; City hours above do NOT apply in Montecito).
  • Coastal Zone, debris-flow, hillside overlay and Montecito Board of Architectural Review (BAR) rules for grading and retaining walls.
  • County and City erosion-control / SWPPP rules beyond the state Construction General Permit (state: more than 1 acre, S9).
  • Appendix J: the County amendments adopt Appendices C, G, I and P and do not mention J; Ch. 14 adopts the "current edition" of the CBC as amended in Ch. 10 without naming J (S25, S26). Confirm with P&D.
  • Which one-call center serves Santa Barbara County: S5 lists Northern/Central (800-642-2444) and Southern (800-422-4133). Santa Barbara County center NOT CONFIRMED; the 811 call routes it.
  • Chapter 7A text: Ord. 2025-02 does not mention Chapter 7A; it amends CBC 1505 (Class A roof) and CRC R313 (S31).
  • Fee amounts (the County fee schedule is set by Board of Supervisors) and inspection scheduling lines; the effective date of County Ord. 5270.

Crew practical notes (practice, not from sources)

  • Treat debris-flow burn areas and steep Montecito creek lots as engineer-led: ask for the geotech report before opening ground.
  • Keep spoil, import and export tickets; the County form asks for cut/fill/import/export yardage.

Try it

Fill in a table of who to call (County vs City) for permit, noise, fire access and stormwater on a Montecito lot and a Santa Barbara lot.

Check yourself

  1. Is Montecito in the City of Santa Barbara?
    Show answer

    No: unincorporated County.

  2. Who sets fire access road standards in Montecito?
    Show answer

    Montecito Fire Protection District.

  3. Do City noise hours apply in Montecito?
    Show answer

    No: City rules are City-only.

17. Master topics: engineers, documents and risk

Stage: Journeyman and Master

  • Read the geotech report: soil types, groundwater, expansive clay, recommended slopes, fill specs.
  • Know when to stop and bring in an engineer: slopes near property lines, retaining walls, wet or unstable soil, anything near a neighbor's footing. S? S6S6 underpinningU for wall height
  • Coordinate special inspection, tests and the QSP (qualified SWPPP practitioner) schedule. S S9 S16
  • Keep daily logs: competent-person inspection, gas test, ticket numbers, photos of marks, tests, stormwater inspections. P
  • Estimate: take-off, haul, compaction, disposal and risk allowances; mark each assumption 'verify'.
  • Local judgment: debris-flow and burn-scar areas, steep Montecito creek lots, high groundwater: involve engineers early. P

Try it

Build a one-page risk register for a hillside Montecito dig: five risks, rule, owner, check.

Check yourself

  1. What daily records do you keep?
    Show answer

    Competent-person inspection, gas test, 811 ticket, photos, tests, stormwater inspections.

  2. When do you involve an engineer?
    Show answer

    Slopes near property lines, walls, unstable or wet soil, nearby footings.

  3. What is a QSP?
    Show answer

    Qualified SWPPP practitioner who handles stormwater inspections.

Math scenes: Cut and fill balance

Verify list: what is not confirmed

Before you bid, plan or dig, confirm these with the agency or engineer named. They were not found in the research.

  • County construction work hours: only a third-party summary (7:00 am to 4:30 pm Mon-Fri) was found; read the permit conditions. The City hours do not apply in Montecito. ?
  • Coastal Zone, debris-flow, hillside overlay and Montecito Board of Architectural Review rules for grading and retaining walls. ?
  • County and City erosion-control rules beyond the state Construction General Permit (more than 1 acre). ?
  • County effective date for Ord. 5270 (2025 CBC) and whether Appendix J applies (the County amendments do not list it). ?
  • Which one-call center serves Santa Barbara County. Dial 811 and it routes the call. ?
  • Retaining-wall engineering and geotech triggers: the County building permit exemption is 4 ft (S27), but an engineering threshold was not found. ?
  • Whether AMN's Class B license covers incidental earthwork, shoring, dewatering or retaining walls. Ask CSLB. ?
  • Prices for tools and materials were not researched. Swell, shrink, tons per yard and lift thickness are practice values to check against the soils report and the supplier ticket. ?

Sources

Original publishers where possible. Items marked secondary are reproductions or summaries; verify against the official text.