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The Hollywood Sign on Mt. Lee above the Hollywood Hills.

◍ Los Angeles · Hills & Canyons

ADU permits in Hills & Canyons

Permit timelines, zoning quirks and design-build field notes for Hills & Canyons.

Photo: Wikimedia Commons

Typical timeline

LADBS: 12–18 weeks because of slope, geotech, and hillside ordinance.

What changes about the permit here

Hill parcels add the Baseline Hillside Ordinance, geotech, and (along the ridgeline) the Mulholland Scenic Parkway Specific Plan to every permit package. The ADU itself is still ministerial, but plan-check takes longer because the structural, grading, and haul-route sheets are heavier than a flat-lot project.

  • BHO caps height to ~33 ft and limits grading cuts based on lot slope.
  • Soils / geotech report required on any slope >10%.
  • Hillside Construction Regulation permits gate haul-route hours and truck size.
  • Beverly Hills + Bel-Air HOA / R1 design review runs parallel to building permit.

On-the-ground notes

  • 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.

Go deeper on Hills & Canyons

Services in Hills & Canyons

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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."
— Field journal, Hills & Canyons
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.

Hills & Canyons · FAQ

Hills & Canyons ADU — frequently asked

Does the Baseline Hillside Ordinance kill my ADU?

Almost never. State ADU law overrides local FAR limits up to 800 sqft, and many hillside lots can fit a full 1,200 sqft attached ADU even under BHO.

How long does a Hills & Canyons ADU permit really take in 2026?
12–18 weeks elapsed for a clean ministerial submittal. Hill parcels add the Baseline Hillside Ordinance, geotech, and (along the ridgeline) the Mulholland Scenic Parkway Specific Plan to every permit package. The ADU itself is still ministerial, but plan-check takes longer because the structural, grading, and haul-route sheets are heavier than a flat-lot project. Compare against the rest of the state in the California permit directory.
What does a Hills & Canyons detached ADU cost right now?
$220–$290/sqft installed for a detached new-build ADU, $170–$230/sqft for a garage conversion. Final number depends on slope, utility runs, and finish tier — the ADU cost calculator narrows it to ±15% in two minutes, and the 2026 cost report shows the per-city ranges.
Do you actually work in Hills & Canyons every week?
Yes — Hills & Canyons is one of our active service areas under the LA studio. Crews live within 25–40 miles of the project; we don't drive teams across the county.
Where can I see deeper Hills & Canyons info on cost, permits, zoning, and timeline?
Each topic has its own page under /areas/la-hills/ — cost, permits, zoning, timeline, and a city-specific FAQ. They're updated quarterly with the most recent city data we have.
Which Hills & Canyons neighborhoods do you build in most often?
Active across the entire city — slope, hillside, and historic overlays we handle weekly. The Hills & Canyons area hub lists the typical neighborhoods we visit; full studio coverage is on the Los Angeles studio page.
Are there Hills & Canyons-specific code quirks I should know about?
Yes — every California city diverges from the state baseline on at least one of: setbacks, fire-zone egress, energy ( Title 24), stormwater, or historic preservation. The permit directory tracks Hills & Canyons's deltas; the Hills & Canyons area hub surfaces what trips up local owners.
How does Hills & Canyons stack up against other Los Angeles cities on permit speed?
Speed depends on plan-check load and electronic submittal maturity. Side-by-side ranges live in the California permit directory; the field journal tracks shifts in real time.
Can I phase a Hills & Canyons project to spread cost across years?
Sometimes — kitchens, baths, and ADUs can stand alone; structural and envelope work usually can't be split safely. We map phasing options during the schematic design phase.
What's the typical Hills & Canyons client profile?
Long-tenure homeowners adding an ADU for family or rental, mid-career families remodeling for space, and small commercial owners doing tenant improvements. See real $Hills & Canyons-adjacent work on the projects index.
How do I check Hills & Canyons zoning for my lot before I call you?
The Hills & Canyons area hub links the Hills & Canyons planning portal. The glossary defines FAR, setback, and height-limit terms in plain English so the portal makes sense.
Does Hills & Canyons allow short-term rental of an ADU?
Most California cities prohibit STR of a new ADU for the first owner-occupancy period; Hills & Canyons's exact rule is in the permit directory. We never advise on rental strategy without confirming current local ordinance.
What insurance and bond coverage do you carry on Hills & Canyons jobs?
General liability, workers' comp, and an active CSLB surety bond on every Hills & Canyons project. Certificates land in your inbox before the proposal, not after. Request them here.
Which Hills & Canyons resource is best for a first-time ADU owner?
Start with the Hills & Canyons area hub, then read the 2026 California cost report and one or two posts from the field journal. The glossary handles every term you'll hit along the way.
What's the most efficient next step for a Hills & Canyons project?
Run the ADU cost calculator for a number, then request a discovery call. We'll pull the Hills & Canyons parcel before we get on the phone.

Authority sources

Hills & Canyons & Los Angeles permit resources.

Primary sources we cross-reference on every project — agencies, utilities, and code bodies whose decisions actually move your permit and budget.

Ready to start a Los Angeles project?

Send us the address. We’ll pull zoning, setbacks, and feasibility before you spend money on drawings — and the inquiry routes straight to the Los Angeles desk.

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