Bay Area · CSLB #1086265
ADU Construction
Bay Area ADU Contractor
Full-service ADU construction across the Bay Area. Design, permits, and construction — one team, one contract. Backyard ADUs, garage conversions, and in-law units.
ADU Construction · Bay Area
Bay Area ADU Contractor — Design, Permits, and Construction
Accessory Dwelling Units (ADUs) are one of the most powerful investments a Bay Area homeowner can make. A well-designed ADU generates $3,000–$6,000/month in rental income, adds significant resale value, and provides flexible space for family members, guests, or a home office. Homee Renovation has built ADUs across San Francisco, San Mateo, Los Gatos, Cupertino, Palo Alto, and beyond.
California's ADU laws have been dramatically streamlined since 2020, making it easier than ever to add an ADU to your property. However, each Bay Area city has its own specific requirements — setbacks, height limits, owner-occupancy rules, and design standards — that must be carefully navigated. Homee Renovation's permit team has deep experience with ADU permit processes across 15+ Bay Area cities.
Our completed ADU at 33 W Bellevue Avenue in San Mateo — a 2,194 sqft detached ADU — demonstrates our capability with complex ADU projects. We managed the full design, permit, and construction process, delivering a high-quality standalone dwelling that significantly increased the property's value and income potential.
Every Homee Renovation ADU project includes a free design consultation with our in-house designer, wholesale material savings of 30%+ on cabinets, fixtures, flooring, and finishes, and full permit management from application through final inspection.
What's Included
Everything in Our ADU Construction Service
Our Process
How We Deliver Your ADU Construction
Free Consultation & Site Assessment
We visit your property, assess ADU feasibility, review zoning requirements, and provide a preliminary scope and budget estimate at no charge.
Design & Planning
Our in-house designer creates ADU floor plans and elevations. We coordinate with structural engineers as needed and prepare permit-ready drawings.
Permit Application & Plan Check
We submit permit applications to your city's Building Division and manage the full plan check process, including responding to corrections.
Construction
Our licensed construction team builds your ADU from foundation to finishes. Daily updates, quality control inspections, and proactive communication throughout.
Final Inspection & Handover
We coordinate all final inspections, obtain the Certificate of Occupancy, and walk you through your completed ADU.
Service Area
ADU Construction Across the Bay Area
FAQ
ADU Construction — Common Questions
How much does an ADU cost to build in the Bay Area?
ADU construction costs in the Bay Area typically range from $300–$600/sqft, or $300,000–$700,000+ for a full detached ADU. Garage conversions and attached ADUs are generally less expensive. Homee Renovation clients save 30%+ on materials through our wholesale relationships.
How long does it take to build an ADU in the Bay Area?
The full ADU process — from design through Certificate of Occupancy — typically takes 6–12 months. Permit timelines vary significantly by city: some Bay Area cities have streamlined ADU approval to 4–8 weeks, while others take 3–6 months. Homee Renovation manages the entire process.
What is the ROI of building an ADU in the Bay Area?
Bay Area ADUs typically generate $3,000–$6,000/month in rental income and add $400,000–$800,000+ to property value. The payback period is typically 5–10 years. Homee Renovation's ADU at 33 W Bellevue Ave in San Mateo significantly increased the property's income potential and resale value.
Do I need a permit to build an ADU in the Bay Area?
Yes — all ADU construction requires permits. However, California law has streamlined the ADU permit process significantly. Homee Renovation manages the full permit process, including design, plan check, and all inspections.
What types of ADUs can I build on my Bay Area property?
The most common ADU types in the Bay Area are: detached backyard ADUs, garage conversions, attached ADUs (additions to the main house), and junior ADUs (JADUs) within the existing home footprint. Homee Renovation builds all types across the Bay Area.
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