Home Additions & ADUs
in Alameda, CA

Planning home additions & adus in Alameda? 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 Alameda, CA?

AZ Elevated Builders provides home additions & adus in Alameda, California. We are a family-run, licensed and insured general contractor based in Brentwood, serving Alameda and the surrounding Alameda 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 Alameda

We offer remodeling and finish carpentry for Alameda's Victorian, Edwardian and Craftsman homes.

The local housing includes Victorian, Edwardian and Craftsman housing on a flat island grid. 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 Alameda, including Gold Coast, East End, Bronze Coast and Bay Farm Island. Project planning here accounts for island salt air, original millwork worth preserving and historic review in places. We assess foundations, drainage and space on the lot when planning an addition or detached unit.

Permits and inspections in Alameda

Permits for work in Alameda go through the City of Alameda Permit Center. 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

Your Alameda project starts with a free on-site estimate and written scope. Our crew coordinates the trades, keeps the site clean and provides a written warranty of up to five years. Hablamos español.

Frequently asked questions

Are ADUs legal in Alameda?

Yes — ADUs are legal in Alameda. California law requires cities to allow ADUs on most residential lots, and Alameda 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.