Last updated: September 24, 2026
What affects the price
Building an ADU is a major project, and the final bill depends on a few key things. Site prep is a big factor; if your land is sloped or needs extensive utility connections, costs go up. The materials you choose—from siding to kitchen finishes—also change the math significantly. Whether you’re building a detached unit or converting an existing garage shifts the permit requirements and structural work needed. We provide exact pricing confirmed free on the call.
About this service
Accessory dwelling units, or ADUs, are secondary residences that share a lot with a main house. These units allow you to increase your property value and utility without buying a new home. You need these when your household needs are changing and you need more flexible living space.
Frequently asked in Los Angeles
What's the typical cost to build an accessory dwelling unit in Los Angeles?
How does financing for an ADU work in Los Angeles?
What are the main considerations for ADU costs in Los Angeles?
Are prefabricated ADUs a good option in Los Angeles?
How do I find accessory dwelling unit builders near me in Los Angeles?
What types of accessory dwelling unit homes are common in Los Angeles?
What should I look for in an accessory dwelling unit contractor in Los Angeles?
Also serving nearby: Santa Monica · Inglewood · South Gate · Compton · Torrance
More on this: HUD ADU resources — ADU policy and financing research.
Service area details
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: Hollywood, Beverly Hills, Santa Monica, Downtown Los Angeles, Pasadena, Silver Lake — and every surrounding area.
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