Expand Your Home with the #1 ADU Builder in the Bay Area
Looking to add more space and value to your property? Geico Builders is the leading ADU Builder in the Bay Area, offering expertly designed Accessory Dwelling Units (ADUs) to fit your needs. Whether you’re looking for a rental unit, guest house, in-law suite, or home office, we provide high-quality attached, detached, and junior ADUs, built with efficiency and style.







ADU BuildersThe Smart Way to Add Space
As an experienced ADU Builder, we help you expand your home and increase property value with a well-designed accessory dwelling unit. Our team ensures each project meets Bay Area regulations while maximizing both functionality and visual appeal.
Why Choose Us As Your ADU Builder?
Custom Floor Plans: Tailored to match your exact living needs.
Top Quality Construction: Built with expert craftsmanship and premium materials.
Seamless Project Management: We handle everything, from design and permits to final inspection

Your Trusted ExpertsTypes of ADUs We Build
We offer multiple options to fit your specific needs and available space:
Detached ADUs: A standalone unit separate from your main house, ideal for rental income, guest houses, or private living spaces.
Attached ADUs: Built as an extension of your home, seamlessly integrating with your existing space while providing independent living areas.
Junior ADUs: A smaller unit (≤500 sq. ft.) within your existing home, often repurposing a bedroom or unused space with its own entrance.
Garage Conversions: Transform an existing garage into a functional space, perfect for maximizing space without building a separate structure.
Home Additions: Expand your home with a room addition that doubles as an ADU, offering flexibility for extended family or rental opportunities.
Why The Bay Area Trusts Geico Builders
Custom Layouts
We design floor plans that maximize comfort, privacy, and functionality, ensuring a seamless addition to your home.
Hassle Free Permitting & Approvals
Our team navigates Bay Area zoning laws and regulations, handling the permitting process for you.
Energy Efficient & Sustainable Features
We incorporate solar panels, LED lighting, and water efficient fixtures to reduce costs and enhance sustainability.

Licensed & Experienced
With years of experience as a top general contractor, we ensure top-tier quality and compliance with all local codes.
Advanced Technology
Visualize your project before construction begins with detailed 3D renderings and layout options.
Transparent Pricing & Communication
We provide clear estimates and regular updates, ensuring a stress-free experience from start to finish.
Our Precise Process
01.
Property Assessment
We evaluate your available space, discuss design goals, and review zoning requirements.
02.
Custom Design & Planning
Our experts create tailored floor plans that fit your needs, budget, and property layout.
03.
Permitting & Material Selection
We obtain the necessary permits and guide you in selecting fixtures, finishes, and sustainable materials.
04.
Construction & Final Touches
Our experienced team builds with precision and efficiency, ensuring a top quality finished product.
Frequently Asked Questions
How much does an ADU cost in the Bay Area?
The cost depends on the size, materials, and complexity of the project. We provide custom quotes tailored exactly to your needs.
How long does it take to build an ADU?
Each project in the Bay Area is different, it will always come down to the size and complexity of the project. Most take 4-9 months, including planning, permitting, and construction. We provide a detailed project timeline upfront so you can prepare accordingly.
Do I need a permit for an ADU?
Yes, permits are required. We handle the entire permitting process for you, ensuring compliance with Bay Area building codes.
Can you build a deck along with my ADU project?
Yes, we can include deck building as part of your ADU project to create a seamless outdoor extension. It’s a great way to add functional outdoor living space to your new unit.
What Our Clients Have To Say
Their positive experiences and glowing testimonials reflect our commitment to delivering exceptional results and outstanding service every time.