Westside · Timeline
How long an ADU really takes in Westside
Total elapsed schedule from the first site walk to the final inspection. Plan check is rarely the long pole — utility coordination and trade scheduling usually are.
Stage by stage
- Survey + design
- 3–6 — Faster on flat parcels east of Lincoln.
- Plan check (LADBS or SM B&S)
- 4–6 — Ministerial — no neighbor notice.
- Permit issuance + utility coordination
- 1–2 — LADWP service drop is the long pole.
- Construction
- 16–22 — Detached new-build, slab to final.
Permit clock vs total schedule
- Ministerial permit
- 8–12 weeks
- Discretionary review (when triggered)
- 16–28 weeks
What slips schedules in this area
- Santa Monica and Venice have their own ADU ordinances on top of state law — both more permissive, not less.
- Coastal Zone parcels (west of Lincoln) may need a CDP from the California Coastal Commission.
- Soft-story retrofit ordinance (Santa Monica + LA) often gets paired with the ADU permit on older multifamily.
Foreman's notebook · Westside
What we know walking onto a Westside lot
Field map · Santa Monica, CA
Checking conditions…
- From Mid-City yard
- 24 min
- Jobs finished here
- 31
- Build window
- May–October — June Gloom slows finishes but framing flies.
Today's daylight window
Sunrise
5:53 AM
Golden hour
7:31 PM
Sunset
8:07 PM
Day length
14h 14m
Permit counter
Santa Monica Building & Safety
1685 Main St, Santa Monica, CA 90401
Phone
(310) 458-8355
Hours
Mon–Thu 7:30am–5:30pm
Our typical wait: 6–9 weeks ministerial
Site
Sandy soil, mostly flat. South-facing rear yards favor the kitchen on the north wall.
Crane / staging
Mini-crane in alleys. Boom-pump concrete reaches most rears without street closure.
Crew spot
Cafecito Organico — Rose Ave
City dossier · the 20 things we track
- Locals call it
- The Westside
- Architectural DNA
- Mid-century modern + Spanish revival
- Our signature spec
- Smooth stucco · cedar batten · 316 SS fasteners
- Fire hazard zone
- Non-VHFHSZ
- Nearest fault
- Newport-Inglewood Fault · 2.4 mi
- Title 24 climate zone
- Title 24 Zone 6 (coastal)
- Median lot
- 5,400 sf
- Typical setbacks
- 5ft side · 15ft rear (coastal)
- New 1BR ADU rents
- $3,200–$3,800 /mo
- Resale lift w/ ADU
- +9–14%
- Iconic landmark
- Santa Monica Pier · 1.4 mi
- Street sweeping
- Tue + Thu
- Trash / dumpster day
- Friday (Republic / SMCS)
- Solar yield
- 1,690 kWh / kW · yr
- Avg summer high
- 75°F
- Avg winter low
- 51°F
- Lots inside an HOA
- 4%
- Nearest ER
- Providence Saint John's — Santa Monica
- Jobsite radio
- KCRW 89.9 — Morning Becomes Eclectic
- Protected trees
- Coast live oak · Torrey pine · all street trees
- Crew lunch spot
- Tacos Por Favor — Olympic & 14th
12 things we already know about this area
- West of Lincoln = Coastal Zone overlay. CDP adds 8–14 weeks if triggered.
- Soft-story retrofit list is online; check before quoting any pre-1978 multifamily.
- Sunset Park alleys are 14ft — mini-crane only, no full-size boom.
- SMURRF reclaimed water hookups on commercial sites — irrelevant for ADUs but inspectors ask.
- Sand soil under most of Venice = shallow footings, easy excavation.
- Brentwood north of Sunset has tree protection zones — survey the canopy before grading.
- Mar Vista Hidden Hills tract has unrecorded easements — title report is non-optional.
- DWP service drop in Venice is the long pole, not the permit.
- Mid-Century post-and-beam roofs in Mar Vista — match 4x12 rafters, not 2x10.
- Santa Monica has its own Title 24 reach code — heat pumps are effectively required.
- Coastal lots need salt-corrosion-rated fasteners; we spec 316 stainless near the beach.
- Street-sweeping Tue/Thu in most Venice tracts — schedule dumpsters around it.
Material yards we call here
- Anawalt Lumber — West LA · lumber
- Ganahl Lumber — Torrance run · lumber
- RCP Block & Brick · concrete
- Bourget Bros. Building Materials · concrete
Recent jobs
- Marine St · Detached 1BR ADU, 720sf
720sf · 22 weeks · 2 mo ago - Navy St · Garage conversion
480sf · 14 weeks · 5 mo ago - Walgrove Ave · JADU + main remodel
510sf · 18 weeks · 9 mo ago
"Westside lots reward patience with the Coastal Commission and punish anyone who skips the title report. We measure twice and call DWP first."
Local intelligence
28 things we track for every Westside job
What changes when the lot is in Westside
Same plans drawn three miles apart can cost $80k different. These are the local conditions, ordinances, soils, utilities, and crew realities that decide the number. We update this from our own jobs and the city counter.
Reg
Regulation & permits
- Noise / construction hours
- Mon–Fri 7a–6p · Sat 9a–5p · no Sun (SMMC 4.12.110)
- Historic overlay
- Ocean Park & Third St HPOZ — Landmarks Commission review on facade
- Parking / dumpster permit
- SMPD street-use permit, 10 biz days · $185/wk dumpster · $475 crane day
- Demo diversion mandate
- 70% diversion mandate (CalRecycle SB1383) · Crown Recycling on Olympic
- School impact fees
- SMMUSD: $4.79/sf residential · waived on ADU <750sf
- Prop 13 reassessment
- Detached ADU = blended assessment · attached ADU = no reassessment
- Zoning trajectory
- R1 → R2 conversions active · SB9 lot splits common · DCP overlay
- ADU pre-approved plans
- Santa Monica pre-approved ADU plans — 4–6 wk permit vs 12–16
Site
Site & geology
- Soil type
- Beach sand over marine terrace — minimal expansion, good drainage
- Water table
- 8–14 ft (high near Pico/Wilshire) — sump pump required on basements
- Foundation pier depth
- 6–8 ft typical · 12 ft if within 200 ft of bluff
- Subsurface conflicts
- Capped Standard Oil wells under PCH corridor · DOGGR map required pre-excavation
- Wildlife / habitat mitigation
- Coastal CA gnatcatcher — clearing limits Mar 15–Aug 31
- Seasonal risks
- King tides Dec–Jan · marine layer Jun gloom · rare red-flag
- Street / delivery access
- 26–32 ft street · alley access common · no crane in Sunset Park alleys
- Airport / flight-path noise
- SMO (closed 2028) approach — last quiet zone in LA basin
Util
Utilities & energy
- Utility upgrade wait
- SCE 200A: 8–14 wk · 400A: 16–22 wk · panel relocate +$4–7k
- Seismic retrofit history
- ~62% of pre-1978 soft-story multifamily retrofitted (SM mandate)
- NEM 3.0 / solar export
- SCE export $0.05/kWh avg · battery essential for ROI · payback now 9–11 yr
- Pool permit reality
- MWD drought: refill banned during stage 3 · solar heat 6–10 wk wait
Crew
Culture & crew
- Local salvage / reclaimed
- Habitat Restore (Bell Gardens), Eco Building Bargains, Olde Good Things
- Color / palette rules
- Coastal Zone: muted earth tones only · no high-gloss white on bluff lots
- Theft risk on jobsite
- Copper wire + Milwaukee tools — Pico/Lincoln corridor · keep tools off-site nightly
- Sub-contractor ecosystem
- Strong: framers, glaziers, marine-grade metal · weak: hillside specialists
- Tree protection fines
- $7,500 + 4:1 box-tree replacement for any street tree · oaks: full appraised value
- Jobsite language
- Spanish + English · framing crews bilingual · drywall crews Spanish-first
$
Money & momentum
- Top cost surprises
- Coastal Dev Permit ($18–35k) · sand-condition pier upgrade ($12k) · sound wall (HOA $8k)
- Permit boom indicator
- ADU permits +42% YoY · whole-house remodels flat · new SFR rare
Sources: city counter notes, our own permit logs, CalRecycle, CA Title 24, DOGGR, CAL FIRE FHSZ, USGS Q-Fault, PG&E / SCE / LADWP rate sheets, school district fee schedules. Last reviewed by our PMs this quarter.
LA WESTSIDE · TIMELINEOff-site · Leo replies tonight
Timeline in La Westside: we'll cost yours from comparable jobs on your zip.
- Pulled from real La Westside permits in the last 18 months
- No 'national average' nonsense
- We hand you the comparable addresses
Free · 48-hour turnaround