Reliable ADU Builder in Berkeley

Looking to add flexible living space or boost property value? Geico Builders is your trusted ADU builder in Berkeley, specializing in beautifully designed accessory dwelling units that blend seamlessly with your main home.

Trusted Team
Expand Your Space

Accessory dwelling units are one of the smartest ways to expand your usable space without relocating. We design and build custom ADUs in Berkeley that meet California’s legal requirements while complementing your home’s style. From standalone backyard cottages to garage conversions and in-law suites, we handle every step with precision.

Why Choose Geico Builders?

Custom Floorplans: Designed to match your space, usage, and property layout.

Zoning Expertise: We understand Berkeley’s regulations and manage the full permitting process.

Quality Materials: Durable, efficient materials built to last in Bay Area conditions.

Turnkey Project Management: One team, one contract, and complete accountability from start to finish.

#1 ADU Builder
Custom ADU Builder in Berkeley

We offer end-to-end solutions for all types of ADUs, tailored to your goals:

Detached: Standalone units built in your backyard for complete privacy and flexibility.

Attached: Additions to your existing home that share a wall but function independently.

Garage Conversions: Transform existing garages into livable, code-compliant secondary units.

Basement: Utilize underused space below your home with full plumbing, electrical, and insulation.

Junior ADUs: Small, affordable units within your home with a private entrance and a compact kitchen.

We design for function, comfort, and longevity while ensuring every project meets Berkeley’s planning and zoning guidelines.

Why Homeowners Trust Geico Builders

Tailored Solutions

We design based on your lot, lifestyle, and purpose whether it’s for rental income, family housing, or work-from-home space.

Urban Infill Specialists

We specialize in building ADUs on tight lots, flag lots, and alley access properties, making the most of limited spaces.

Energy-Efficient Design

We include energy-saving systems, green building practices, and compliance with California Title 24 standards.

Licensed & Insured Professionals

We’re fully certified, insured, and experienced with Berkeley’s code, seismic rules, and building processes.

3D Project Rendering

Visualize your completed project with our professional 3D designs before we begin construction.

Transparent Communication

From day one, we provide detailed proposals, realistic timelines, and clear updates so you’re never left guessing.

Our Streamlined Process

01.

On-Site Consultation

We assess your property, understand your goals, and confirm that your lot meets your requirements.

02.

Design & Planning

Our design team create a custom floor plan and 3D renderings, followed by structural and zoning approvals.

03.

Permitting & Pre-Construction

We submit applications, manage any revisions, and prepare the site while keeping you fully informed.

04.

Construction & Completion

Our construction crew executes the build efficiently, focused on quality, compliance, and cleanliness.

Frequently Asked Questions

How much does it cost to build an ADU in Berkeley?

Costs vary depending on size, layout, location, and whether it’s detached or converted from existing space. We offer detailed, transparent estimates based on your specific goals and site conditions.

What happens if my property has foundation problems?

No need to worru! We’ll perform a foundation repair or reinforcement before building. This ensures your new unit complies with local codes and lasts for decades. Investing in foundation repair upfront can prevent costly problems down the line.

How long does an ADU project typically take?

Timelines depend on permitting, materials, and site complexity. We provide a full project schedule and keep you updated every step of the way.

Do I need permits for an ADU in Berkeley?

Yes, permits are required for construction. We handle the entire permitting process, including site plans, zoning checks, and inspections, to ensure everything is 100% compliant. You won’t need to coordinate with city departments.

Can I build an ADU on any residential property in Berkeley?

Most single-family and multi-family properties in Berkeley qualify for ADUs, but lot size and other factors must be considered. We perform a full feasibility review during your consultation. If there are restrictions, we’ll advise on the best path forward or alternatives.