Hills & Canyons · Timeline
How long an ADU really takes in Hills & Canyons
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
- Topo + soils + geotech
- 5–10 — Required before any meaningful design work.
- Structural + grading sheets
- 4–8 — Heavier than flat-lot — caissons, retaining.
- LADBS plan check
- 6–10 — Hillside grading is the long pole.
- Construction
- 26–40 — Crane / haul windows, weather-sensitive grading.
Permit clock vs total schedule
- Ministerial permit
- 12–18 weeks
- Discretionary review (when triggered)
- 22–36 weeks
What slips schedules in this area
- Baseline Hillside Ordinance caps height, grading cuts, and building footprint based on slope.
- Mulholland Scenic Parkway Specific Plan applies along the spine — separate Director's review.
- Beverly Hills parcels run their own R1 design review; Bel-Air HOAs review separately.
Foreman's notebook · Hills & Canyons
What we know walking onto a Hills & Canyons lot
Field map · Hollywood Hills, Los Angeles, CA
Checking conditions…
- From Mid-City yard
- 22 min
- Jobs finished here
- 14
- Build window
- Late April–early November. Wet-weather grading bans hit hard.
Today's daylight window
Sunrise
5:52 AM
Golden hour
7:31 PM
Sunset
8:07 PM
Day length
14h 15m
Permit counter
LADBS — Metro Office
201 N Figueroa St, Los Angeles, CA 90012
Phone
(213) 482-0000
Hours
Mon–Fri 7:30am–4:30pm
Our typical wait: 12–16 weeks (HCR adds time)
Site
Steep + decomposed granite. Drilled piers on caissons; never spread footings on slope.
Crane / staging
Mini-crane + boom pump. Crane lifts need 72hr neighbor notice in HCR.
Crew spot
Bricks & Scones — Larchmont
City dossier · the 20 things we track
- Locals call it
- The Hills
- Architectural DNA
- Hillside modern · post-and-beam · cantilevered glass
- Our signature spec
- Steel moment frame · charred cedar · Class A standing-seam
- Fire hazard zone
- VHFHSZ (very high)
- Nearest fault
- Hollywood Fault · 0.6 mi
- Title 24 climate zone
- Title 24 Zone 9
- Median lot
- 7,800 sf
- Typical setbacks
- 5ft side · 15ft rear · slope-adjusted
- New 1BR ADU rents
- $3,600–$4,400 /mo
- Resale lift w/ ADU
- +7–11%
- Iconic landmark
- Hollywood Sign · 2.2 mi
- Street sweeping
- Mon (limited routes)
- Trash / dumpster day
- Friday (LASAN)
- Solar yield
- 1,750 kWh / kW · yr
- Avg summer high
- 88°F
- Avg winter low
- 48°F
- Lots inside an HOA
- 3%
- Nearest ER
- Cedars-Sinai Medical Center
- Jobsite radio
- KCRW Morning Becomes Eclectic
- Protected trees
- Coast live oak · sycamore · all ridge-line trees
- Crew lunch spot
- Greenblatt's-style at Joan's on Third
10 things we already know about this area
- HCR district covers nearly all of Hollywood Hills west — haul route required.
- Most lots > 25% grade — caissons standard, not optional.
- Mulholland Specific Plan view corridors get appealed if you go above the ridge.
- VHFHSZ everywhere — Chapter 7A, ember-resistant vents, defensible space.
- Driveway widths often 9ft — mini-crane mandatory.
- Geotech reports run $8–15k and 4–6 weeks before drafting.
- Septic systems on some streets — engineered alternative system if upgrading.
- Beachwood Canyon Sign Overlay restricts roof reflectivity — matte finishes only.
- Crane swings over a neighbor need their signed letter, not just notification.
- Concrete trucks need a 12% grade limit — sometimes 2 trucks shuttle to a pump.
Material yards we call here
- Anawalt Lumber — Hollywood · lumber
- Robertson's Ready Mix (Burbank yard) · concrete
- United Rentals — Hollywood · rental
Recent jobs
- Lookout Mountain Ave · Hillside detached studio
510sf · 30 weeks · 6 mo ago - Outpost Dr · Stacked JADU + view deck
640sf · 26 weeks · 11 mo ago
"Hills jobs live or die on the geotech. We never quote until the report is in our hands."
Local intelligence
28 things we track for every Hills & Canyons job
What changes when the lot is in Hills & Canyons
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–Sat 7a–8p · LAMC · hillside neighbors complain fast = HCRC enforcement
- Historic overlay
- Whitley Heights HPOZ · Outpost Estates · Hollywood Heights · Mills Act gold
- Parking / dumpster permit
- LADOT + flagger required on >12% grade · $400+ daily traffic plan · helicopter for big steel
- Demo diversion mandate
- 65% LAMC · hillside haul restrictions: dirt-only haul route bond required
- School impact fees
- LAUSD: $4.79/sf · BHUSD if in 90210: $4.79/sf + city add-on
- Prop 13 reassessment
- Major remodel >50% = potential full reassessment · keep one wall standing rule
- Zoning trajectory
- BMO/BHO caps massing · Methane zone in Hollywood foothills · HCR limits FAR
- ADU pre-approved plans
- Not viable on slopes >15% · custom geotech required · use Standard Plan only on flats
Site
Site & geology
- Soil type
- Modelo shale / Topanga sandstone — fractured, anisotropic · landslide-prone overlays
- Water table
- Variable — perched water on bedding planes · French drains mandatory
- Foundation pier depth
- 14–28 ft caissons + grade beams · steel moment frame standard · geotech mandatory
- Subsurface conflicts
- Methane zones (Salt Lake oil field) · DOGGR check + venting on Hollywood foothills mandatory
- Wildlife / habitat mitigation
- P-22 mountain lion corridor (now retired) · raptor nests · oak/sycamore protection
- Seasonal risks
- Mudslides Dec–Mar · Santa Ana fire Sep–Jan (PSPS) · rain stops all grading
- Street / delivery access
- Single-lane hairpins · no semi-truck · 10-yd max dump truck · concrete via line-pump only
- Airport / flight-path noise
- BUR + LAX north contour · helicopter traffic (LAPD + tourist) constant
Util
Utilities & energy
- Utility upgrade wait
- LADWP 200A: 16–24 wk hillside · transformer access often needs helicopter ($18k)
- Seismic retrofit history
- ~22% (most are post-1980 cantilevers, not soft-story) · hillside ordinance retro 2018+
- NEM 3.0 / solar export
- Solar OK but tree canopy reduces yield 30% · battery essential for PSPS
- Pool permit reality
- Engineered shell, geotech, 60-day permit cycle · infinity edge = +$80–140k
Crew
Culture & crew
- Local salvage / reclaimed
- Olde Good Things (Atwater), Pasadena Architectural Salvage, Big Daddy's Antiques
- Color / palette rules
- BHO: muted earth tones · no white reflective on ridgeline (BHO 12.21.A.17)
- Theft risk on jobsite
- Copper from estates · construction tools low (gated) · package theft high
- Sub-contractor ecosystem
- Strong: caisson, structural steel, sheer-pile · weak: budget framers won't bid
- Tree protection fines
- Protected tree: $25k+ + 4:1 box · oak fines aggressively prosecuted · ISA arborist on file
- Jobsite language
- Spanish + English · Russian on some Beverly Hills jobs · architect-driven communication
$
Money & momentum
- Top cost surprises
- Geotech + soils ($18–35k) · caissons ($45–120k) · haul-route bond ($25k+)
- Permit boom indicator
- Hillside permit cycle 32–48 wk · geotech + grading drives carrying cost
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 HILLS · TIMELINEOff-site · Leo replies tonight
Timeline in La Hills: we'll cost yours from comparable jobs on your zip.
- Pulled from real La Hills permits in the last 18 months
- No 'national average' nonsense
- We hand you the comparable addresses
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