Accessory dwelling unit services

Looking for accessory dwelling unit services in Los Angeles, CA? Call AccessoryDwellingUnit Pros for a contact a provider — no obligation. Licensed adu builders serve Los Angeles and the surrounding area, and you'll get straight answers on timing and what affects the price.

Last updated: September 24, 2026

What affects the price

Building an ADU is a custom project, so costs vary based on your specific choices. Site conditions are the biggest factor; if your land requires significant grading, utility extensions, or foundation work, those expenses add up quickly. Choosing high-end finishes, custom cabinetry, or complex roof lines will also push the budget higher compared to a standard design. Prefabricated units often offer predictable costs, while custom site-built structures allow for more flexibility but can be harder to estimate upfront. Exact pricing confirmed free on the call.

About this service

These services cover the entire lifecycle of building a backyard home, from initial property assessments and architectural design to navigating local zoning permits. You need this when you want to add living space to your property but don’t know where to start with city regulations or site feasibility. Professionals handle the paperwork, site planning, and technical requirements so you can focus on the final layout and how you plan to use the additional square footage on your lot.

Frequently asked in Los Angeles

What are the disadvantages of ADUs in Los Angeles?

Potential disadvantages in Los Angeles can include upfront costs and the permitting process, though it's been streamlined. Neighborhood concerns about parking or density can sometimes arise. It's also important to consider how an ADU might impact your existing yard space. Local pros can help mitigate these.

How much does an ADU cost in Los Angeles?

The cost of an ADU in Los Angeles depends heavily on its size, design complexity, and chosen finishes. Factors like site preparation, foundation type, and whether it's a detached unit or a garage conversion all play a role. Get a precise quote by calling us.

What are the rules for ADUs in Los Angeles?

Is an ADU allowed in Los Angeles?

Absolutely. Los Angeles has actively promoted ADUs as a solution to housing shortages. There are clear guidelines and simplified permitting processes in place for most residential properties. Consulting with a local professional is your best next step.

What are the rules for ADUs in California?

California state law has made it easier to build ADUs by setting minimum standards and limiting local jurisdictions' ability to prohibit them. Key regulations involve size, height, and owner-occupancy. Local zoning still influences specific details. We focus on LA's regulations.

Also serving nearby: Santa Monica · Inglewood · South Gate · Compton · Torrance

All cities in California →

More on this: HUD ADU resources — ADU policy and financing research.

Service area details

3,820,914residents

8,120per sq mile

8ZIP codes served

Serving all of Los Angeles — population 3,820,914; about 8,120 residents per square mile across 470.5 sq mi. ZIP codes covered include 90001, 90002, 90003, 90004, 90005, 90006, 90007, 90008.

Neighborhoods served in Los Angeles: Santa Monica, Silver Lake, Pasadena, Hollywood, Valley Village — and every surrounding area.