ADU Construction in the Bay Area by Trusted Contractor

The cost of building an ADU typically ranges from $150,000 to $400,000+, depending on the size, type (detached, attached, or garage conversion), design features, and level of customization. We provide a detailed, transparent estimate during your free consultation.

In most cities, ADUs can be up to 1,200 square feet for detached units and slightly smaller for attached or converted spaces. Junior ADUs (JADUs) are typically limited to 500 sq ft. Zoning laws vary, so we help you determine the maximum allowable size based on your property.

Yes. ADUs require permits and city approval, including compliance with building codes, zoning regulations, energy standards (Title 24), and inspections. Don’t worry — we handle the entire permitting process so you don’t have to navigate it alone.

Yes — ADUs are legal rental units in San Jose and most Bay Area cities. You can rent them out for long-term tenants or family. However, short-term rentals (like Airbnb) may be restricted, depending on your city’s regulations. We’ll walk you through your options during the planning phase.

The timeline can range from 4 to 8 months, depending on the type of ADU, permitting timeline, material availability, and site conditions. We provide a realistic project timeline before construction begins, and we keep you informed every step of the way.

Absolutely. ADUs typically increase both your property value and potential rental income, making them one of the most cost-effective investments for California homeowners. A well-built ADU adds value, flexibility, and resale appeal.

Yes! Garage conversions are a popular and budget-friendly way to build an ADU. We insulate the space, update the foundation, and add plumbing, electrical, windows, and everything needed to make it a legal, livable unit.

Yes — we provide complete design-build services, including space planning, architectural drawings, interior design elements, and city submittals. You don’t need to hire a separate architect or designer — our team handles it all in-house.

Yes. A well-built home addition can significantly increase your home’s resale value, especially when adding bedrooms, bathrooms, or a full suite. We design additions with both comfort and long-term investment in mind.

Start by contacting us for a free, no-pressure consultation. We’ll evaluate your property, explain the process, and help you decide on the best ADU option for your needs and goals.