Brentwood Homeowner Guide: Permits, Code Enforcement and ADUs

Last updated November 13, 2026. Reviewed by the Cash Home Buyers CA team.

Brentwood homes fall under the City of Los Angeles, and the city’s own planning documents name Brentwood among the communities with land in a Very High Fire Hazard Severity Zone. This guide explains what that means for a Brentwood owner: which hillside and fire rules to ask about, how LADBS permits work, how code enforcement and ADUs fit in, and what to do if you want to sell a house with permit gaps.

Brentwood at a glance

Governing city	City of Los Angeles (LADBS for permits and inspections; City Planning for zoning)
Fire hazard	City Draft Safety Element lists Brentwood among communities with portions in the Very High Fire Hazard Severity Zone
Fire-zone rule	Los Angeles Municipal Code section 57.4911 governs the Very High Fire Hazard Severity Zone
Hillside Construction Regulations	The LADBS HCR page lists four areas; Brentwood is not among them
HCR work hours	Weekdays 8:00 a.m. to 6:00 p.m.; Saturdays interior work only (in HCR areas)
Neighborhood overlay	No Brentwood-specific permit overlay was verified for this guide

Fire hazard zone: the Brentwood fact to check first

The City of Los Angeles Draft Safety Element names Brentwood among the communities that have portions in the Very High Fire Hazard Severity Zone, and Los Angeles Municipal Code section 57.4911 is the city’s fire-zone provision.

Not every Brentwood lot is in the zone, so ask LADBS or the Fire Department whether your address is mapped. If it is, expect fire-safety requirements on new construction, additions and some brush clearance duties, and expect buyers and insurers to ask about it.

Hillside Construction Regulations: what the city page says

The LADBS Hillside Construction Regulations page applies to single-family developments in listed hillside areas: Bel Air and Beverly Crest (effective March 22, 2017), the Bird Streets and Laurel Canyon area (May 28, 2018), Franklin Canyon, Coldwater Canyon and Bowmont Hazen (March 20, 2023), and the Northeast Los Angeles Community Plan Area (July 24, 2023).

Brentwood is not in that list as published, so do not assume the rules apply to your lot.

Where they do apply, work is allowed weekdays from 8:00 a.m. to 6:00 p.m., Saturdays are interior only, and floodlighting is barred after 6:00 p.m. The page says violations can be charged as a misdemeanor with a fine of $1,000 and/or imprisonment. Hauling and notification rules were not stated on the page I read.

If your Brentwood lot is on a hill

Hillside lots can raise separate grading, retaining wall and slope questions even where the HCR does not apply. Ask LADBS whether your lot is in a Hillside Area or has a soils or geology requirement before you plan an addition, and ask the Fire Department about brush clearance. These are questions to put to the city, not figures this guide can supply.

Permits and selling a Brentwood house

Buyers and lenders ask about permit history, and California sellers generally disclose known unpermitted work on the Transfer Disclosure Statement. Our statewide guide to selling as-is with unpermitted work explains what disclosure involves, and the seller closing costs guide shows what else to budget. If tenants live in the home, read the tenant-occupied home sale guide.

When a Brentwood home has an open permit, an expired one, or work done without a permit, you generally have three options: finish and finalize the permit before listing, disclose the work and negotiate on the open market, or sell as-is to a cash buyer who takes the house in its current condition. Use this checklist:

• Ask the city’s building division for the permit record on your address.
• List every addition, garage conversion, enclosed patio or outbuilding, and note which have permits.
• Gather final inspection records, plans and contractor invoices.
• Ask what plans, fees and inspections it would take to permit each unpermitted item.
• Compare that cost and time with a no-repairs cash sale. New construction can also be reassessed for property tax, which our Prop 13 guide explains.

Questions to ask the Brentwood building division before you start

• Does my project need Planning or Engineering approval in addition to a building permit?
• Is there an exemption that applies, and what conditions come with it?
• What plan-check deposit and fees apply, and how long will review take right now?
• What inspections will be required, and in what order?
• Can an existing unpermitted structure be legalized, and what would that involve?

Common permit mistakes homeowners make

The most common problems are starting work before the permit is issued, letting a permit expire, skipping a required inspection, and assuming a contractor pulled a permit when none exists. Each one can surface years later when a buyer’s agent, appraiser or lender asks for records.

A lapsed or never-finalized permit is easier to resolve while you still own the home and can answer questions from the city. If you are not planning to stay, decide early whether finishing the permit or selling the house as it stands makes more sense.

If you hired a contractor, ask for a copy of the permit and the final inspection record and keep them with your closing documents. A finaled permit is the clearest evidence that the work was inspected. Our capital gains guide also explains how improvement costs may matter when you sell.

Selling a Brentwood house with open code violations

An open notice or citation does not stop you from selling. California sellers generally disclose known notices on the Transfer Disclosure Statement, which asks about notices of abatement or citations against the property, and a title search will show any recorded lien. Our as-is and unpermitted work guide explains the disclosure rules, and the closing costs guide covers how liens and fees are paid at closing.

In practice, sellers with open violations usually choose one of three paths: correct the problem and ask the city to close the case before listing, disclose it and sell with a price adjustment, or sell as-is to a cash buyer who takes on the cleanup. Which one fits depends on how big the problem is, how much time you have and whether fines are still growing. Before you decide:

• Get the case number, notice date and the specific code sections cited.
• Ask the city what must be done to close the case and whether it will re-inspect.
• Ask for a current statement of fines, fees and any recorded liens.
• Get quotes for the work so you can compare repair cost with a no-repairs sale.
• Check whether tenants, an estate or a co-owner need to be part of the decision.

Questions to ask the Brentwood code enforcement team

• What exactly is the violation, and what would count as fixed?
• What is the deadline, and can it be extended if work is under way?
• Are fines accruing, and what is the total today?
• Has a lien or special assessment been recorded against the property?
• How do I request a re-inspection once the work is done?

Common mistakes homeowners make with violation notices

The costliest mistake is ignoring a notice. Deadlines for appeals are short, fines and fees can escalate, and unpaid costs can end up as a lien that follows the property.

Other common errors include fixing the problem but never asking for a re-inspection, assuming a tenant or relative dealt with a notice, and doing repair work that needs a permit without pulling one.

Keep every notice, photo and receipt, and write down the name of each staff member you speak with.

If the home came to you through an inheritance, a divorce or a tenant who left it in poor condition, the notice may land on you without warning. Our probate home sale guide and inherited home tax basis guide cover inherited property, and a no-repairs cash sale can be a practical way to close the file.

How to sell a house in Brentwood

1. Pull the permit record and any city notices for your address.
2. Collect plans, inspection records and receipts.
3. Request a no-obligation cash offer for the house as it stands.
4. Choose your closing date.
5. Close with no repairs, permit cleanup or showings required.

See also our Brentwood page and the Los Angeles County hub.

Frequently asked questions

Where do Brentwood permits come from?

From the City of Los Angeles. LADBS handles permits and inspections, and City Planning handles zoning.

Is Brentwood in a very high fire hazard zone?

The city’s Draft Safety Element names Brentwood among communities with portions in the Very High Fire Hazard Severity Zone. Ask the city whether your specific lot is mapped.

Do the Hillside Construction Regulations apply in Brentwood?

The LADBS page lists four areas, and Brentwood is not among them. Confirm with LADBS for your address.

What are the HCR work hours?

In the listed areas, weekdays 8:00 a.m. to 6:00 p.m. and interior work only on Saturdays.

Can I sell my Brentwood house with unpermitted work or open violations?

Yes. You can disclose the issues and sell as-is, including to a cash buyer. Our statewide guide explains the disclosure rules.

More guides

• We Buy Houses in Brentwood
• We Buy Houses in Los Angeles County
• Los Angeles County Property Tax Guide
• Los Angeles Building Permits Guide
• Los Angeles Code Enforcement Guide
• Los Angeles Zoning and ADU Guide
• All California Guides

Sources

• LADBS: Hillside Construction Regulations (HCR)
• Los Angeles Department of Building and Safety (LADBS)
• Los Angeles City Planning

This guide is general information from public sources, not legal advice. Confirm current rules, fees and hours with the city.