Custom ADU Builder Anaheim
Compare custom scope, site constraints, model options, finish level, construction sequence, and written pricing before selecting a build approach.
Orange County · California
Anaheim ADU design & construction
Anaheim’s ADU Express program starts with eligibility screening and a selected catalog plan. Staff ask for the property address, plan number and meter spot before arranging the site-plan meeting.
Full-service ADU construction
Custom ADU builder & contractor services in Anaheim
Start with a custom ADU builder or ADU contractor in Anaheim, then coordinate design, architecture, engineering, permits, budgeting, construction, inspections, and handoff around the property.
ADU Contractor Anaheim
Coordinate construction scope, subcontractors, schedule, inspections, site logistics, and closeout around a clearly defined permitted set.
ADU Design Build Anaheim
A coordinated design-build workflow keeps property review, design, engineering, permitting, budgeting, procurement, and construction aligned.
ADU Design Anaheim
Develop the floor plan, exterior direction, material selections, functionality, and site fit before committing to engineering and construction.
ADU Architect Anaheim
Architectural planning can address layout, massing, code constraints, site relationships, and permit drawings where an appropriately licensed professional is required.
ADU Engineer Anaheim
Engineering coordination can cover structural, foundation, utility, civil, energy, and other disciplines required by the property and permitting authority.
Local planning guide · Reviewed October 2, 2026
What matters for an ADU in Anaheim
Permitting authority: City of Anaheim — ADU Express
Official local guidanceLocal rules and design checks
| Topic | Local guidance |
|---|---|
| Fixed plans | ADU Express drawings cannot be modified by the owner; custom designs use the standard permit process. |
| Utility preparation | Provide a copy of the meter spot with the selected plan and address. |
| Staff meeting | After preliminary approvals, City staff arrange a meeting to prepare the site plan and review construction requirements. |
Selected local requirements, not a complete zoning determination. Confirm the current rules for your address with the responsible agency.
Fees and budget checks
Anaheim’s four published catalog designs are labeled free. Ask staff for the remaining permit, utility and applicable development charges; the drawing price does not establish the total project cost.
Anaheim plan catalog and drawing pricesHow to start the permit process
Complete eligibility screening, select a plan and contact the program staff. Prepare for the City Hall meeting and follow staff instructions for uploading the application materials.
Municipal plan example
Anaheim Plan 002: 499-square-foot one-bedroom
The catalog also lists a 224-square-foot studio, 990-square-foot two-bedroom and 1,199-square-foot three-bedroom option. Confirm current code-cycle acceptance with staff.
View the original sourceAnaheim ADU questions
- Can I change a wall in an Express plan?
- Anaheim says modified designs must use its standard building-permit review process.
- What should I send before the staff meeting?
- Your address, selected plan number and meter spot are the City’s stated screening inputs.
Sources for this guide
Local sources reviewed October 2, 2026. Historical examples retain their stated dates. Contact ADU California Inc. to confirm project availability; this guide does not establish an office location or property approval.
A useful first review
Separate what is available from what still needs verification.
01
Confirm the property
Start with a complete address and review the available parcel, building, and map context.
02
Identify the unknowns
Keep missing setbacks, easements, utilities, access, hazards, and local requirements visible.
03
Choose the next review
Use the preliminary result to prepare a focused conversation with the required professionals and agencies.
Explore project types
Compare the scope before choosing a solution.
These pages explain the questions each project type introduces. They do not assert that a particular scope is permitted or suitable for your address.
Compare planning footprints
See common ADU sizes before choosing a design.
These model pages are planning references only. They are not a statement that a particular size is allowed or buildable at a Anaheim address.
California directory
Explore more city guides.
The next useful action
Put your address at the center of the conversation.
The online review is preliminary and is not a permit decision, survey, engineering opinion, construction document, final price, or guaranteed schedule.