Downey ADUs Built for Downey Lots and Downey Resale

ADU Construction Questions Homeowners Ask About ADU Construction in Downey

How much does an ADU cost to build in Downey in 2026?

Turnkey pricing runs $172,000 to $310,000. Garage conversions land $172K-$205K. Detached 1-bedroom new-builds run $205K-$255K. Detached 2-bedroom new-builds run $270K-$310K. All include plans, permits, full build, and final.

How long does the Downey ADU permit take?

Currently 9-13 weeks at City of Downey Community Development for a complete submittal. We handle setbacks, lot coverage, height, exterior compatibility, and the three utility sign-offs.

How much value does an ADU add to a Downey home?

Currently $200K to $285K appraised lift depending on ZIP — 90242 premium pockets at the top. Downey's per-square-foot appraisals are stronger than most southeast LA cities.

What does a 1-bedroom ADU rent for in Downey?

Currently $2,200 to $2,750 per month — 90242 and Stonewood-adjacent at the top. At $230K all-in and $2,500/mo, cash-on-cash is in the 11-13% range before tax benefits.

Will the ADU look like it belongs in the neighborhood?

Yes. We match roof pitch, siding, trim, color palette, eaves, and window styles to the main house. Downey planning cares about exterior compatibility — and so do your neighbors.

Can I convert my detached garage?

Yes. Downey garage conversion ADUs run $172K-$205K turnkey, 120-140 days permit-to-keys. We raise the roof if headroom needs it, run new utilities, and often spec separately-metered services for clean rental accounting.

Do you handle plans, permits, and the build?

Yes — end to end. Site survey, plans, structural, Title 24, MEP, permit submittal, ground-up build, every inspection, and the certificate of occupancy. One fixed-price contract.

Are you licensed and insured?

CSLB #1105249. General liability and workers' comp on file. Architectural design firm since 2016, CSLB-licensed GC since 2023, 200+ Greater LA projects.