ADU Constructionin Culver City, CA
You can build an ADU in Culver City under Municipal Code 17.400.095, which gives way to state law wherever the two conflict. Attached or detached units are capped at 850 square feet for one bedroom or 1,200 for two or more, setbacks next to homes are 4 feet, and no parking is required. Hillside lots add grading review.
Culver City grew in bursts: a studio town from 1917, a 1940s and 1950s boom that took the population from 8,976 to 32,163 in two decades, and Fox Hills, annexed in 1964 mainly for sewer service. The 2024 American Community Survey five-year estimates show a median year built of 1963 and 83.9 percent of the 18,803 housing units older than 1980. Most backyards here belong to a bungalow or a small tract house, and a good share of lots hold apartments.
This page covers which rulebook controls, the hillside rules that make Culver City different, size and setbacks, garage conversions, fees and clocks, multifamily lots and renting or selling. Our ADU construction page has the regional prices and phase timeline, and the Culver City overview lists the other trades we manage here.
What Culver City's code says about ADUs
Where adu construction permits come from in Culver City: City of Culver City Planning and Development Department, Building Safety Division.
- The City's ADU page points to Municipal Code 17.400.095 for zoning rules, publishes a 13 MB ADU Handbook, and recommends owners legalizing older units get a confidential third-party code inspection. Planning is at (310) 253-5710 or planning@culvercity.gov, Building Safety at (310) 253-5800.
- Section 17.400.095 says Government Code 66310 to 66342 supersedes any conflicting local rule and sets out the 'statewide exemption' ADUs under Gov. Code 66323 that need not meet lot coverage, front setback or design standards: one ADU and one JADU inside existing or proposed single-family space or an existing accessory structure (with up to 150 square feet of expansion for access), one new detached ADU of up to 800 square feet with 4-foot side and rear setbacks, ADUs in non-livable parts of multifamily buildings, and detached ADUs on multifamily lots.
- ADU size limits in Culver City: an attached or detached ADU is capped at 850 square feet for a one-bedroom or 1,200 square feet for two or more bedrooms (attached also limited to 50 percent of the primary home's floor area, whichever is less), there is no cap for an ADU entirely inside a home, and the minimum is 150 square feet with a kitchen and at least a three-quarter bath.
- ADUs are allowed in zones permitting single-family or multiple-family use (two or more attached units on one property). On a single-family lot the code allows one ADU within existing or proposed space, one detached new-construction ADU and one JADU; on multifamily lots conversions may not exceed 25 percent of existing units (minimum one), up to eight detached ADUs are allowed not to exceed the number of existing units, and two where multifamily is proposed.
- ADU height: in R1 and R2 zones the zone's residential height applies, in other zones 30 feet, but standards may not block an ADU of up to 18 feet detached or 25 feet attached, a detached ADU within half a mile of major transit or a high-quality commercial corridor gets two extra feet for roof pitch, and a detached ADU on a multifamily lot may be 30 feet.
- ADU setbacks: at least 2 feet from side and rear lines abutting a special-purpose or mixed-use zone, street or alley and 4 feet abutting a residential zone; front setback follows the zone unless State law allows otherwise; an ADU within an existing house or accessory structure needs no new setback if the Fire Department finds fire safety adequate; a unit above a garage uses the same 2 and 4 foot rules; through lots may reduce one front setback to 2 feet.
- No parking is required for an ADU or JADU, and none is required to replace parking removed by a garage conversion (17.400.095.I and M.4).
- ADUs may not be rented for 30 days or less, owner occupancy is not required for ADUs or for JADUs unless a JADU shares sanitation with the house, an ADU must have its own kitchen and bath and no internal door to the main house, and ADUs and JADUs are exempt from the City's Objective Design Standards (17.400.095.J, K and N.2).
Sources for these rules
How do you build an ADU in Culver City: the code, the handbook or state law?
Start with section 17.400.095 of the Municipal Code, which says Government Code sections 66310 to 66342 supersede any conflicting local rule. The City also publishes an ADU Handbook, announced in a March 2024 news item with its pre-approved plans. We have not read that 13 MB handbook, so for any figure it carries, ask Planning at (310) 253-5710 and treat state law as the controlling text. The City's ADU page links the code and recommends a confidential third-party code inspection for owners legalizing older units.
The code lists the statewide exempt types that need not meet lot coverage, front setback or design standards: an ADU and a JADU inside existing or proposed single-family space or an existing accessory structure, one new detached ADU of up to 800 square feet with 4 foot side and rear setbacks, ADUs in non-livable parts of multifamily buildings, and detached ADUs on multifamily lots.
The Pre-Approved ADU (PRADU) program offers a 468 square foot studio, a 637 square foot one-bedroom and an 806 square foot two-bedroom, each in Post-War Bungalow, Spanish Revival or Contemporary style, for new construction only. Site plans, plan check and impact fees still apply.
Can a Blair Hills or Culver Crest lot take an ADU? Hillside H, the -RH overlay and fire zones
Any lot with a slope of 15 percent or more on any portion is recorded with the Hillside 'H' designation. That brings a topographic survey, a geotechnical and geological report, third-party grading review at the owner's expense and a grading cap of 500 cubic yards plus 5 percent of the lot size in cubic yards. A hillside grading plan is required when grading passes 100 cubic yards with a cut or fill over 3 feet, a cumulative 5 feet, or ground steeper than 25 percent. The Safety Element says landslide hazard is largely confined to Blair Hills and Culver Crest.
The Residential Hillsides Overlay (-RH) cuts the maximum floor area ratio from 0.45 on slopes under 15 percent to 0.25 over 60 percent, and counts accessory buildings in the floor area. How that ratio meets the state's exempt ADU types is not something we could settle from the code, so ask Planning before you draw. Confirm on the City's map whether a lot has the H designation or the overlay.
Fire maps disagree. The County's copy of the State layer put 23 of 1,299 sample points inside the city (1.8 percent) in Very High and 117 (9.0 percent) in High, while the City's Safety Element keeps using the 2011 map. We name no boundary: ask the Fire Department about your parcel and the 100 feet of defensible space it requires in Very High zones.
How big can a Culver City ADU be, and how close to the fence?
An attached or detached ADU is capped at 850 square feet for a one-bedroom and 1,200 square feet for two or more bedrooms, and an attached unit is also limited to 50 percent of the main home's floor area, whichever is less. An ADU entirely inside a home has no cap, and the minimum is 150 square feet with a kitchen and at least a three-quarter bath.
Side and rear setbacks are at least 4 feet where the lot abuts a residential zone and at least 2 feet beside a street, an alley or a mixed-use or special-purpose zone. A unit within an existing house or accessory structure needs no new setback if the Fire Department finds fire safety adequate. Height follows the zone, 30 feet elsewhere, but standards cannot block 18 feet for a detached unit or 25 feet for an attached one, with two extra feet for roof pitch near major transit.
ADUs and JADUs are exempt from the City's Objective Design Standards, and the code requires no parking for either.
Can you convert a Culver City garage into an ADU, and does the parking have to be replaced?
Yes, and the code says replacement parking is not required when a garage is converted. The unit still needs its own kitchen and bath and no internal door to the main house. A garage turned into a plain room, not a dwelling, is a different job: the City's Planning FAQ allows it if setbacks are met and a Covenant and Agreement is recorded so the room is never used as a dwelling.
A JADU is capped at 500 square feet and one per property. It must sit inside the single-family home, where an attached garage qualifies and a detached one does not, with separate exterior access and an efficiency kitchen. Owner occupancy is required only when the JADU shares a bathroom.
Units built without permits before January 1, 2020 may apply to be legalized and are judged against Health and Safety Code 17920.3, not current room-size rules. Our post on garage conversion permit steps walks through the sequence, written for Los Angeles but useful as a checklist.
Which fees, review clocks and utility steps come with an ADU in Culver City?
An ADU or an addition creating one of 750 square feet or more pays impact fees, including the Mobility Improvement Fee (15.06.515) and in-lieu parkland fees (15.06.300), charged in proportion to the main home's size. Before the building permit, an Address Assignment application goes to Current Planning. The City's fee schedule also lists a school fee of $5.17 per square foot for projects adding 500 square feet or more of habitable area. We found no City total, so we print none.
State law sets the clock: the City must say within 15 business days whether an application is complete, then act within 60 days, or the permit is deemed approved, under Government Code 66317 as amended for 2026. The City's own plan check estimate is 15 to 20 business days for permits in general.
Utilities are separate steps. The City's submittal list names Golden State Water Company, Southern California Edison and Southern California Gas, and asks for a geotechnical report where applicable. A surveyor must certify any new construction within 3 feet of a property line before the first foundation inspection.
Can a 1960s lot or an apartment building in Culver City add an ADU or split under SB 9?
On a single-family lot the code allows one ADU within existing or proposed space, one detached new ADU and one JADU. On a multifamily lot, conversions may not exceed 25 percent of existing units, with a minimum of one, and up to eight detached ADUs are allowed, not more than the number of existing units. With 41.3 percent of units in buildings of five or more, that second rule applies to many properties.
The soft-story retrofit rules exempt detached single-family homes, including those with an ADU, but cover older wood-frame buildings with open ground floors. The City's SB 9 page says lot splits and two-unit developments in single-family zones are approved ministerially, and that SB 450 lets projects demolishing every exterior structural wall qualify. It publishes no fees, hillside or historic limits, so ask Planning at (310) 253-5710.
In the three historic districts, on Braddock Drive, Lafayette Place and McConnell Boulevard, call Cultural Affairs at (310) 253-6003 before drawing anything visible from the street.
Can a Culver City ADU be rented, sold or used for short stays?
It can be rented, but not for 30 days or less. Owner occupancy is not required for an ADU, and a JADU needs it only when it shares sanitation with the house. Nightly rentals are therefore off the table, and the income for a unit should be planned on monthly rent.
An ADU cannot be sold separately in most cases. Section 17.400.096 lets one be sold as a condominium under Government Code 66342, with a parcel map for four or fewer condominium parcels, a tentative and final map for five or more, a pre-recordation safety inspection and lienholder consent. State law also allows a sale to a qualifying low-income buyer through a nonprofit.
The State Board of Equalization says new construction is reassessed only on the new portion, at the value it adds. MDG Builders, CSLB #1040337, designs the unit and manages the permits and schedule, with licensed specialty subcontractors doing the field work.
ADU details from Culver City-area projects
Framing, utilities and interior details from ADU and garage conversion projects in Culver City and nearby communities. Tap a photo to enlarge it.
What adu construction costs around Culver City
Our ADU construction page works with about $100,000 to $200,000 for a garage conversion to a studio or one-bedroom and $200,000 to $400,000 for a new detached ADU of 400 to 800 square feet, at medium to low confidence. The sources are a UC Berkeley survey that found a Los Angeles County median of $100,000 for units finished in 2018 and 2019, a Terner Center estimate of $148,000 for Los Angeles, and the 2025 Cost vs. Value report, which lists $178,536 and 39.9 percent recouped. No Culver City cost study turned up, and the impact fee amounts are not printed here, so none of these figures is a local quote. The ADU cost guide shows each source, and the post on ADU versus JADU covers the 500 square foot unit. Neighbors apply the same state law differently, so compare Los Angeles, Inglewood and Santa Monica. A family that wants space inside the house can weigh a room addition in Culver City, and a bath in the unit follows bathroom remodeling here.
| What it covers | Typical range |
|---|---|
| Garage conversion to a studio or one bedroom | $100,000 to $200,000 |
| New detached ADU, 400 to 800 sq ft | $200,000 to $400,000 |
| UC Berkeley survey, Los Angeles County median, 2018 and 2019 projects | $100,000 overall. $90,000 garage. $180,000 detached. |
| Terner Center and Berkeley CCI, 2020 | $148,000 Los Angeles estimate. $167,000 statewide average. |
| Remodeling Cost vs. Value 2025, Los Angeles | $178,536 job cost |
| Electrical and plumbing, Angi Los Angeles, January 2026 | Electrical $2,600 to $7,800. plumbing $3,900 to $10,400. |
| City permit and plan check fees | Not priced here |
Other work we manage in Culver City
Culver City ADU size, permit and rental questions
How big can an ADU be in Culver City?
An attached or detached ADU can be up to 850 square feet for a one-bedroom or 1,200 square feet for two or more bedrooms, and an attached unit is also limited to half the main home's floor area. An ADU entirely inside the house has no cap. State law still requires 800 square feet to be allowed with 4 foot setbacks.
Do I need a permit to build an ADU in Culver City?
Yes. Every ADU and JADU, new or converted, needs a City building permit, filed with complete plans at Building Safety, plus an Address Assignment from Current Planning. Review is ministerial, meaning staff apply set standards without a hearing. Call Planning at (310) 253-5710 to confirm what your lot needs.
How long does it take to get an ADU permit in Culver City?
State law gives the City 15 business days to call an application complete and then 60 days to act, or it is deemed approved. That is the review clock, not the whole project. Construction, utility work and final inspection come after, and our phase timeline on the ADU construction page lays out each step.
How much does it cost to build an ADU in California?
Our working ranges are about $100,000 to $200,000 for a garage conversion and $200,000 to $400,000 for a new detached unit of 400 to 800 square feet. They come from named studies and are not Culver City quotes. A written proposal for your lot sets the price, with impact fees listed on their own lines.
Can I build an ADU on a hillside lot in Culver City?
Possibly, but it adds work. A lot with a 15 percent slope on any portion carries the Hillside H designation, which requires a survey, a geotechnical report and third-party grading review, and caps grading at 500 cubic yards plus 5 percent of lot size. Confirm your lot on the City's map before paying for plans.
Can I convert my Culver City garage to an ADU, and do I have to replace the parking?
Yes, you can convert it, and the code says no replacement parking is required. The unit needs its own kitchen and at least a three-quarter bath and no internal door to the house. A conversion inside an existing garage is one of the statewide exempt types, so ask Planning which path fits.
What is the difference between an ADU and a JADU in Culver City?
A JADU is smaller and lives inside the house. It is capped at 500 square feet, one per property, with separate exterior access and an efficiency kitchen, and an attached garage qualifies. An ADU is a full dwelling with its own kitchen and bath, up to 850 or 1,200 square feet when attached or detached.
Can I rent my Culver City ADU on Airbnb?
No for stays of 30 days or less. The code bars renting an ADU for 30 days or less, so month-to-month leases and longer are the lawful path. Owner occupancy is not required for an ADU, though a JADU that shares a bathroom with the house needs it, so plan the income on monthly rent.
Does Culver City have pre-approved ADU plans?
Yes. The City's PRADU program offers a 468 square foot studio, a 637 square foot one-bedroom and an 806 square foot two-bedroom, each in three styles, for new construction only. Plans are checked against the current code cycle, and site plans, plan check and impact fees still apply to your lot.
Describe your Culver City ADU idea
Tell us whether it is a garage conversion, a detached unit or a JADU, the neighborhood, whether the lot is flat or sloped and the year the house was built, and we will plan the first visit around those answers.