ADU builder in Anaheim, CA

Anaheim actively welcomes ADUs, with its own ADU Anaheim program, a pre-approved plan catalogue and an express review track. We help you choose the fastest path for your lot.

Backyard ADU designed and built by ADU Homes
441ADU permits (2025)
up to 1,200 sq ftDetached ADU size
18 ft + 2 ft roof pitchHeight
ADU Express: 1–3 daysFast track

North Orange County

Building an ADU in Anaheim.

What’s different about adding an ADU here, and how we plan around it.

ADU Express

Anaheim’s ADU Express lets qualifying single-family properties that use a detached ADU from the city’s pre-approved catalogue complete review in about 1–3 days. Most ADUs still go through standard review, so we’ll tell you which route fits your project.

Clear local standards

Anaheim allows detached ADUs up to 1,200 sq ft and 18 ft plus 2 ft for a matching roof pitch. Detached ADUs over 800 sq ft need 10 ft of separation from the main house, which shapes where the ADU sits on the lot.

A steady ADU market

Anaheim issued 441 ADU permits in 2025, the second most in Orange County, and up from 429 in 2024.

Plans that fit

Floor plans that work within Anaheim’s rules.

These ready-to-build plans fit Anaheim’s size, height limits. Our studio can adjust any of them to your lot.

Plan 400A ADU floor plan, studio, 400 sq ft

Plan 400A

Studio · 1 Bath · 400 ft²

Plan 484 ADU floor plan, 1 bed, 484 sq ft

Plan 484

1 Bed · 1 Bath · 484 ft²

Plan 600 ADU floor plan, 1 bed, 600 sq ft

Plan 600

1 Bed · 1 Bath · 600 ft²

Plan 744 ADU floor plan, 2 bed, 744 sq ft

Plan 744

2 Bed · 1 Bath · 744 ft²

Plan 858 ADU floor plan, 2 bed, 858 sq ft

Plan 858

2 Bed · 2 Bath · 858 ft²

Plan 1000 ADU floor plan, 3 bed, 1,000 sq ft

Plan 1000

3 Bed · 2 Bath · 1,000 ft²

How we work in Anaheim

One team from first visit to move-in.

01

Free ADU analysis

We review your Anaheim lot, what the local rules allow and which plans fit, with an estimated cost.

02

Design

Our in-house studio prepares construction-ready plans in about 1–2 months.

03

Permits

We submit to the City of Anaheim and handle every round of plan check.

04

Fixed-price build

Construction in about 4–5 months, managed by one project manager from our Long Beach office.

Anaheim ADU questions

Common questions in Anaheim.

What is ADU Express in Anaheim?

A city program that lets qualifying single-family properties use a pre-approved detached ADU plan and complete review in about 1–3 days.

How far must an ADU be from the house in Anaheim?

Detached ADUs larger than 800 sq ft need 10 ft of separation from the main dwelling. Smaller ADUs have more flexibility.

How tall can an ADU be in Anaheim?

Detached ADUs can be 18 ft plus 2 ft for a roof pitch that matches the main house. Attached ADUs follow the zone’s height limits.

Nearby

We also build in

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Planning an ADU in Anaheim?

Tell us about your Anaheim property and we’ll prepare a free ADU analysis: what fits on your lot, the rules that apply, recommended plans, estimated cost and timeline.

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Serving homeowners throughout Los Angeles and Orange County.