ADU Construction in San Francisco
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- ADUs Construction
- San Francisco
- Our team designs custom detached backyard cottages.
- Get a seamless garage conversion apartment here in San Francisco.
- We expertly create attached family suites and guest houses.
- Let us transform your basement into a bright, livable space.
- Trust us for complete city permitting and compliant construction.
- Your property gains a stylish studio or remote office.
In a city where every square foot counts, Accessory Dwelling Units (ADUs) offer the perfect way to maximize your property’s value and functionality. At Gadi Construction, we design and build ADUs that fit seamlessly into San Francisco’s diverse architectural styles, from classic Victorian homes to modern townhouses. Whether you’re adding a rental unit, a private guest suite, or an extended family space, we bring creativity, expertise, and attention to every detail.
Our goal is to help you make the most of your home’s potential by creating a space that’s stylish, comfortable, and built to last. Each ADU project is carefully managed to meet your goals, your budget, and the unique charm of your neighborhood.
Our Kitchen Remodeling Process
We follow a seamless, structured process to ensure your kitchen remodel is smooth and stress-free from start to finish.
1
We begin by understanding your ideas, style preferences, and project goals to create a plan that aligns with your lifestyle.
2
Our experts design your kitchen in 3D so you can see exactly how the final space will look before construction begins.
3
We guide you in selecting high-quality materials from cabinets and lighting to flooring and countertops that complement Alameda’s architectural charm.
4
Our skilled craftsmen execute each stage with precision, care, and respect for your home.
5
Every detail is carefully inspected to ensure perfection, durability, and your complete satisfaction.
Stylish and Functional ADU Design for San Francisco Homes
San Francisco’s mix of historic charm and urban innovation inspires unique ADU possibilities. At Gadi Construction, we specialize in designing ADUs that blend perfectly with your property’s style while meeting modern living needs. From compact studios to full guest houses, every design is crafted for comfort, practicality, and beauty.
Here are six popular ADU ideas among San Francisco homeowners
Ideal for tight city lots, this stand-alone ADU provides privacy and independence while maintaining elegant curb appeal. It’s great for guests, tenants, or aging family members who need a comfortable, self-contained space.
An excellent choice for growing families or multi-generational homes, this design connects to your main house while offering privacy and convenience. It’s perfect for relatives, caregivers, or as an income-generating rental.
Turn your unused garage into a modern apartment with a kitchenette, bath, and sleek finishes. This design maximizes your property’s potential — a smart solution for homeowners looking to add value without major construction.
Make the most of your lower level by transforming it into a bright, functional living area. With proper ventilation, lighting, and waterproofing, your basement becomes a cozy retreat that feels open and inviting.
Designed for professionals, artists, or entrepreneurs, this ADU provides a quiet, inspiring workspace. Add built-in storage, custom lighting, and flexible layouts to make it both productive and comfortable.
This design brings resort-style comfort to your property. Elegant interiors, energy-efficient systems, and private amenities make it perfect for entertaining guests or offering premium short-term stays.
Complete ADU Building and Design Services in San Francisco
From start to finish, Gadi Construction handles your ADU project with expertise and care. We take care of everything from design and permitting to final touches so you can enjoy a smooth and stress-free process. Our team focuses on quality construction, energy efficiency, and timeless design that enhances your home’s character.
We understand San Francisco’s building codes and zoning requirements, ensuring your ADU is built safely, legally, and beautifully.
Our services include:
- ADU Design and 3D Planning
- City Permitting and Compliance
- Framing, Electrical & Plumbing
- Interior and Exterior Finishing
- Kitchenette & Bathroom Setup
- Custom Cabinetry and Storage
Why the Bay Area Chooses Gadi Construction
I engaged GADI Constructions Inc to restore my unit in a high rise in San Jose. Right from the beginning Millie, Project Manager, was very professional and when entrusted with the job completed the repair and restoration work smoothly and in time with perfection with time to time progress reporting on phone and through video.
We explored a home addition for our growing family and these folks handled everything with a lot of thought. The builders explained the remodel plan clearly and made the space blend into the house naturally. It was a solid experience all around.
We recently engaged Gadi Construction for a home renovation project, and the experience exceeded our expectations. Their team demonstrated exceptional flexibility, efficiency, and accommodation, adapting seamlessly to our evolving needs while maintaining a high standard of workmanship. The quality of the final output was impressive, reflecting meticulous attention to detail. Millie, our dedicated project manager, along with her team including Mike, fostered a reassuring and collaborative environment throughout the process, ensuring clear communication and minimal disruption. We highly recommend Gadi Construction for any renovation endeavors; their professionalism and commitment to client satisfaction are commendable.
We recently engaged Gadi Construction for a home renovation project, and the experience exceeded our expectations. Their team demonstrated exceptional flexibility, efficiency, and accommodation, adapting seamlessly to our evolving needs while maintaining a high standard of workmanship. The quality of the final output was impressive, reflecting meticulous attention to detail. Millie, our dedicated project manager, along with her team including Mike, fostered a reassuring and collaborative environment throughout the process, ensuring clear communication and minimal disruption. We highly recommend Gadi Construction for any renovation endeavors; their professionalism and commitment to client satisfaction are commendable.
We worked with Nadav from Gadi Construction during the planning phase of our expansion project, and he was a fantastic advisor throughout the process. He helped us think through every detail — from design implications to quality considerations — and brought a thoughtful, thorough, and methodical approach to each discussion.
Nadav was always friendly, highly professional, and incredibly responsive. It consistently felt like he was acting as a truly independent advisor who cared deeply about building long-term relationships and making sure we would get the very best outcome for our project. His proposals were detailed, insightful, and clearly grounded in deep experience.
Although we ultimately moved forward with another contractor who came through a personal referral, that decision wasn’t a reflection on Nadav’s work or professionalism. Based on our experience, we’d be thrilled to work with him in the future and wholeheartedly recommend him to anyone looking for a trusted, high-quality construction partner.
I went with them for a kitchen makeover and it was worth every penny. The design team helped me see options I never thought about.
Their skilled builders were respectful of the house and kept everything tidy. It felt like a real partnership through the whole remodel.
The value added by the new layout is already noticeable. I still walk in and smile because the remodel turned out exactly right.
Taking on a whole house renovation sounded stressful but they took the edge off. They walked us through each stage of the project so we always knew what was happening. The result feels like a true custom home remodeling job.
The bathroom remodel completely changed how our space feels. Their team helped plan everything so the design made sense and looked great. The quality build is obvious in every corner. It’s nice to have a space that’s functional and adds value at the same time.
We worked with this business for a full residential remodel, and it was a great experience. The skilled builders brought the design to life exactly as we imagined. Every room feels intentional and high-quality. I’d happily recommend them to anyone looking for a thoughtful and professional remodel.
Want to get in touch?
We’d love to hear from you.
Here’s how you can reach us…
Tell us about your project and get a personalized, no-obligation quote.
We specialize in remodeling and construction – from kitchens to full home makeovers.
Let’s bring your vision to life with expert planning and transparent pricing.
OR CALL TODAY FOR A FREE ESTIMATE:
SAN JOSE AREA – 404-889-1000
SAN FRANCISCO AREA – (925) 639-3177
Our Services
Home Remodel
Bring new life to your home with expert remodeling that combines style, comfort, and functionality. Upgrade your home from floor to ceiling with a custom remodel tailored to your needs and lifestyle.
Common Area Remodel
Kitchens are the centerpieces of your home; they’ve become the center of most modern homes, a place where family comes together to share tastes, love, and stories.
Kitchen Remodel
Kitchens are the centerpieces of your home; they’ve become the center of most modern homes, a place where family comes together to share tastes, love, and stories.
Bathroom Remodel
One of the most common remodeling projects for homeowners is to remodel the bathrooms in the house. After all, this is probably the first place you visit in the morning and the last place you visit at the end of the day.
Additions
Anyone can use an extra room in their home. It could be a space for business, like an Airbnb unit, daycare (yes, we’ve seen that happen) if you would like it or need an additional guest room or bedroom.
ADUs
Maximize your property’s potential with a custom-built ADU. Whether it’s for rental income, a home office, or additional living space, our team designs and builds functional, stylish units that blend seamlessly with your property.
Basement Remodel
Transform your basement into a beautiful, functional living space, a cozy retreat, home office, or guest suite with expert remodeling your family will love.
Start Your San Francisco ADU Project Today
Ready to unlock your home’s full potential? Let Gadi Construction design and build your dream ADU with style and precision. From initial planning to final construction, we make the process simple and rewarding. Call us today to schedule your free consultation and start creating a beautiful, functional ADU that enhances your San Francisco home and lifestyle.
Related Projects
People Also Ask
The cost to build an Accessory Dwelling Unit (ADU) in San Francisco typically ranges from $250,000 to $500,000 or more. This wide range is due to factors like size, design complexity, site conditions, and material choices. A basic, pre-designed detached unit might start at the lower end, while a custom, high-end ADU with premium finishes and complex site work can exceed $500,000. Key cost drivers include city permit fees, which are significant, engineering for seismic safety, utility connections, and contractor availability. It is crucial to budget for soft costs like architectural design, permits, and potential impact fees. Obtaining multiple detailed quotes from licensed contractors experienced with San Francisco's strict building codes is essential for accurate planning.
The $40,000 grant in California typically refers to the CalHFA ADU Grant Program. This initiative provides forgivable loans of up to $40,000 to qualified homeowners to cover pre-development costs associated with constructing an Accessory Dwelling Unit (ADU) or Junior ADU (JADU) on their property. Eligible costs include impact fees, plan check and permit fees, soil tests, architectural designs, and energy reports. The loan is forgiven if the homeowner completes the ADU and occupies it as their primary residence for five years. This program aims to increase affordable housing stock and assist homeowners with high upfront costs, though specific eligibility requirements and funding availability are subject to change.
Yes, you can build an Accessory Dwelling Unit (ADU) in San Francisco, but it requires navigating specific local and state regulations. The process is governed by California state law, which generally promotes ADU development, and San Francisco's own Planning Code. Key considerations include zoning, lot size, height restrictions, and setbacks. You must obtain necessary permits from the San Francisco Department of Building Inspection and Planning Department. Recent state laws have streamlined approval for ADUs that meet objective standards, limiting local discretion to deny them. It is crucial to check current rules on maximum unit size, parking requirements (often waived near transit), and owner-occupancy, as these details can influence feasibility and design.
The cost comparison between building an accessory dwelling unit (ADU) on-site versus purchasing a prefabricated model depends heavily on project specifics. Generally, prefab ADUs can be cheaper and faster due to controlled factory construction, which reduces labor costs and material waste. However, site-built ADUs offer greater customization to fit unique lot conditions and homeowner preferences, though they often incur higher labor expenses and longer timelines. Key factors influencing cost include local permitting fees, foundation requirements, utility connections, and finish selections. For a precise budget, obtain quotes from local contractors for site-built options and from prefab manufacturers, ensuring all site work and delivery are included in the prefab estimate.
Securing an ADU permit in San Francisco requires navigating specific local planning codes. The process begins with determining if your property is eligible, considering zoning, lot size, and existing structures. You must then prepare detailed architectural plans that comply with the city's building, planning, and fire codes. A crucial step is submitting your application to the San Francisco Department of Building Inspection (DBI), often concurrently with the Planning Department if variances are needed. Engaging a professional architect or permit expediter familiar with San Francisco's unique requirements, like rear yard rules or historic district guidelines, is highly recommended to streamline review and avoid costly delays. Expect inspections throughout construction to ensure compliance.
Building an Accessory Dwelling Unit (ADU) in San Francisco is a strategic way to add housing and value. The process is governed by state law and local ordinances, requiring careful navigation. Key steps include verifying your property's zoning eligibility, adhering to specific size and height limits, and ensuring design compliance with the San Francisco Planning Code. A critical early step is a pre-application meeting with the San Francisco Planning Department. While state law streamlines approval for compliant units, local requirements for utilities, parking, and owner-occupancy can apply. Hiring an architect or designer experienced with San Francisco's unique building codes and permit process is highly recommended to manage this complex but rewarding project efficiently.
Building an Accessory Dwelling Unit (ADU) in a San Francisco backyard is a strategic way to add housing and value. The process requires navigating specific local regulations. Key steps include verifying your property's zoning compliance, adhering to size and height limits (typically a maximum of 800 sq ft for a backyard unit), and ensuring design meets planning codes for setbacks and lot coverage. Securing permits from the San Francisco Department of Building Inspection is mandatory and can be complex. Hiring an architect or designer experienced with local ADU rules is highly recommended to streamline approval. With careful planning, a backyard ADU provides a valuable rental income stream or flexible living space in a high-demand market.
