Home Additions & ADUs
in El Cerrito, CA

Planning home additions & adus in El Cerrito? AZ Elevated Builders offers free estimates with a written scope. Our work carries a written warranty of up to five years.

Who offers home additions & adus in El Cerrito, CA?

AZ Elevated Builders provides home additions & adus in El Cerrito, California. We are a family-run, licensed and insured general contractor based in Brentwood, serving El Cerrito and the surrounding Contra Costa County area. Estimates are free, every trade on our crew has 15+ years of experience, and all work carries a written warranty of up to five years. We speak English and Spanish. Call (925) 812-3150.

5.0 Google Reviews ·CA Licensed & Bonded ·Free Estimates ·Warranties up to 5 Years ·Financing Available ·Hablamos Español

Detached ADU guest house with pool at dusk

We design and build primary-suite additions, kitchen expansions, family rooms and second-story additions. Rooflines, windows and finishes are planned to work with the existing house.

An ADU can provide space for family or a rental unit. We handle feasibility, California's ADU requirements, local permitting and utilities through final inspection.

Planning your project in El Cerrito

We offer remodeling services in El Cerrito, with planning for sloped lots and existing home layouts.

The local housing includes 1920s–50s bungalows and mid-century homes stepping up the hillside. For an addition to a historic home, we review the siding, window proportions and roof pitch to plan compatible details. We also check whether neighborhood design review applies.

We serve El Cerrito, including El Cerrito Hills, Fairmount, Richmond Annex border and Cerrito Vista. Project planning here accounts for narrow sloped lots with tight access and downhill drainage to manage. We assess foundations, drainage and space on the lot when planning an addition or detached unit.

Permits and inspections in El Cerrito

Permits for work in El Cerrito go through the City of El Cerrito Building Division. Additions and ADUs are the most review-heavy work we do — setbacks, lot coverage, utilities and California's ADU rules all get checked before a shovel moves. We handle the permit application and coordinate inspections.

What's included

Room additions & home extensions
Primary suite & bath additions
Detached & attached ADUs
Garage conversions
Feasibility & permit management
Utility connections & upsizing
Full kitchens & baths in every unit
Finish levels matched to the main house

What to expect

Contact us to schedule a walkthrough in El Cerrito. We provide free estimates, a written schedule and a warranty of up to five years. Hablamos español.

Frequently asked questions

Are ADUs legal in El Cerrito?

Yes — ADUs are legal in El Cerrito. California law requires cities to allow ADUs on most residential lots, and El Cerrito processes them under those state rules. We confirm setbacks, size limits and utility requirements for your specific parcel during the free feasibility visit.

What does an ADU cost to build?

It varies with size, site and finish level — a garage conversion is a different project than a detached new build. We price it in a written scope after walking your property, and financing options are available.

How long does an addition take?

Design and permitting typically run 2–4 months depending on the city; construction runs 3–6 months for most additions and detached ADUs. We provide a written schedule and keep you updated weekly.