ADU Construction in Concord
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- Design custom ADU plans for your Concord home.
- Our team builds comfortable backyard guest cottages.
- Transform underused spaces into garage conversion suites.
- Trust us for complete basement apartment renovations.
- Create a compact home office with abundant natural light.
- Get modern, detached units built specifically for Concord.
Why the Bay Area Chooses Gadi Construction
Nadav & his crew are professional, punctual and reliable. They kept us informed about the process and the next steps, timelines etc throughout the process. They can anticipate hidden issues while renovating older structures, so it minimizes the surprises during the renovations.
We had a wonderful experience working with Gadi Construction on our home remodeling project. From start to finish, the team was professional, knowledgeable, and committed to delivering high-quality work. Remodeling a home can be stressful, but they made the entire process much smoother by communicating clearly, addressing our questions promptly, and ensuring every detail was handled with care.
A special thank you to our project manager, Millie, who was truly outstanding. She was organized, responsive, and incredibly easy to work with throughout the project. Millie kept us informed at every stage, coordinated everything seamlessly, and always made sure our concerns were addressed quickly. Her attention to detail, professionalism, and dedication gave us confidence that our project was in good hands.
The craftsmanship and quality of the finished work exceeded our expectations, and we are extremely happy with the transformation of our home. We appreciate the entire Gadi Construction team for their hard work and especially Millie for making what could have been a stressful renovation an enjoyable experience.
We highly recommend Gadi Construction to anyone looking for a reliable remodeling contractor, and if you're fortunate enough to have Millie managing your project, you'll be in excellent hands.
We had a wonderful experience working with Gadi Construction on our home remodeling project. From start to finish, the team was professional, knowledgeable, and committed to delivering high-quality work. Remodeling a home can be stressful, but they made the entire process much smoother by communicating clearly, addressing our questions promptly, and ensuring every detail was handled with care.
A special thank you to our project manager, Millie, who was truly outstanding. She was organized, responsive, and incredibly easy to work with throughout the project. Millie kept us informed at every stage, coordinated everything seamlessly, and always made sure our concerns were addressed quickly. Her attention to detail, professionalism, and dedication gave us confidence that our project was in good hands.
The craftsmanship and quality of the finished work exceeded our expectations, and we are extremely happy with the transformation of our home. We appreciate the entire Gadi Construction team for their hard work and especially Millie for making what could have been a stressful renovation an enjoyable experience.
We highly recommend Gadi Construction to anyone looking for a reliable remodeling contractor, and if you're fortunate enough to have Millie managing your project, you'll be in excellent hands.
Worked very closely with Millie and team on a remodel of our 2000 sq feet property in Milpitas and it was a delight to work with Millie and the entire team. Millie took the entire burden off of our shoulders and had her team do some amazing work and a very tight schedule. The work the team has pulled off is amazing and we are extremely happy with the work and looking forward to moving back in.
Worked very closely with Millie and team on a remodel of our 2000 sq feet property in Milpitas and it was a delight to work with Millie and the entire team. Millie took the entire burden off of our shoulders and had her team do some amazing work and a very tight schedule. The work the team has pulled off is amazing and we are extremely happy with the work and looking forward to moving back in.
We recently completed a renovation project with GADI Construction, and I couldn't be happier with the results and service.
From the very beginning, the team truly listened to our vision. They are incredibly flexible and capable of customizing everything to meet specific needs–no matter what idea we threw at them, they always found a practical, creative way to bring it to life. On top of their top-tier craftsmanship, their pricing was very fair and transparent throughout the process.
A special shoutout to our project manager, Nadav, who was exceptional. Nadav's attention to detail is unmatched. He handled all communication with the crew effortlessly and was constantly proactive with quality control, catching and resolving small details before they ever became issues. Because of his dedicated management, I was able to stay focused on my own work and personal life without the typical stress that comes with remodeling.
If you are looking for a reliable, customer-focused contractor that delivers top-quality work at a fair price, I highly recommend GADI Construction and Nadav!
I requested a consolidation to replace our kitchen countertop/ backsplash/ sink. Itay from GADI, did a wonderful job explaining the project process, suggesting different ideas, cost and timeframe.
Thank you Itay!
Al —
I had a very good experience with Millie personally and the whole Gadi team doing a major kitchen renovation , that included designing the kitchenrelocations, skylights and reconfiguration of space.
I will gladly recommend to work with them. I personally plan to do so in the future.
I had a very good experience with Millie personally and the whole Gadi team doing a major kitchen renovation , that included designing the entire kitchen, relocations, skylights and reconfiguration of space.
I will gladly recommend to work with them. I personally plan to do so in the future again.
Our home remodeling project is finally complete (almost 2 year ordeal), but team at Gadi Construction made this navigation manageable.
First shout out to Millie Studnict(Project Manager) . If you've ever gone through a major home renovation, you'd have many questions, decisions, surprises, inspections, and frustration. Throughout the entire process, Millie was always there with an answer, a solution, or simply the patience to walk us through the next step.
What I appreciated most was that Millie genuinely cared. No matter how busy things got, she always returned calls, responded to emails, and kept us informed. There were plenty of times when we were unsure about something, and Millie never made us feel like we were asking too many questions.
The entire Gadi team was great to work with as well. The crews showed up when they said they would, treated our home with respect, and were always courteous and professional. It was clear that everyone took pride in their work.
After dealing with the stress of restoring our home following a fire, it was a huge relief to have a contractor we could trust. The project is now complete, the final inspection has passed, and we're very happy with the outcome.
Thank you, Millie and Lucie and everyone at Gadi Construction..
Concord is known for its peaceful neighborhoods, family-friendly environment, and spacious homes, with local landmarks like Todos Santos Plaza and the iconic Mount Diablo providing a scenic backdrop, making it the perfect place to add an Accessory Dwelling Unit (ADU). At Gadi Construction, we specialize in designing and building ADUs that add space, comfort, and long-term value to your property.
Our expert team turns your ideas into reality by blending style and functionality. Whether you want a rental unit, a guest house, or a private workspace, we ensure every detail is thoughtfully planned to match your home’s architecture and your personal needs.
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.
Creative ADU Designs for Concord Homeowners
ADUs in Concord can be designed to suit various lifestyles, from cozy studios to family-sized cottages. Our designers focus on efficient layouts, energy-saving construction, and beautiful finishes that complement your property’s character.
Explore some of the most requested ADU designs among Concord residents
A private, detached unit perfect for visiting family or friends. This design offers comfort, privacy, and a homely atmosphere surrounded by your garden’s tranquility.
Transform your existing garage into a modern, functional living space. We upgrade every detail, insulation, flooring, and lighting to create a stylish and independent ADU.
Use your basement to add a complete living area with its own entrance, kitchenette, and bathroom. It’s ideal for multigenerational living or generating rental income.
For those working from home, this ADU design offers a quiet, productive workspace with natural light and custom storage — balancing comfort and efficiency.
A contemporary-style structure built in your backyard, featuring sleek finishes, an open layout, and eco-friendly systems for a modern lifestyle.
Designed to maximize functionality and privacy, this ADU is perfect for generating steady rental income while enhancing your property’s overall value.
Complete ADU Design & Construction Services in Concord
From the first design sketch to final inspection, Gadi Construction handles every aspect of your ADU project. Our licensed builders and designers take care of permits, zoning requirements, and detailed construction, ensuring a smooth and stress-free experience.
Our ADU services include:
- Personalized ADU Planning & Design
- Building Permits & City Approvals
- Plumbing, Electrical & HVAC Setup
- Kitchenette & Bathroom Installation
- Flooring, Paint & Interior Finishes
Smart Technology & Energy Efficiency Solutions
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:
480-314-8016
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 Building Your ADU in Concord Today
Enhance your home’s functionality and value with a beautifully designed ADU from Gadi Construction. Whether you need extra space for family, guests, or rental opportunities, we’re here to make it happen with quality craftsmanship and personalized service.
Contact us today to book your free consultation and see how a new ADU can elevate your Concord property’s comfort, value, and style.
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People Also Ask
The cost to build a 1200 sq ft ADU in California varies significantly by region, but for the Santa Clara and San Jose area, you should expect a range between $350,000 and $500,000. This estimate covers design, permits, foundation, structure, and standard finishes. Factors like site conditions, utility connections, and material choices heavily influence the final price. For a project of this size, you have two primary paths: custom construction or prefabricated units. To help you decide which option offers better value for your specific lot, we recommend reading our internal article titled 'Prefab Vs. Custom ADUs: Santa Clara Cost Analysis' at Prefab Vs. Custom ADUs: Santa Clara Cost Analysis. This resource breaks down the financial trade-offs for 1200 sq ft units in our local market.
The most cost-effective approach to an Accessory Dwelling Unit is typically a prefabricated or modular unit, which can significantly reduce on-site labor and construction time. For homeowners in Santa Clara and San Jose, a standard 500 to 600 square foot studio or one-bedroom ADU offers the best balance of functionality and cost. To minimize expenses, focus on a simple, rectangular floor plan with standard finishes and avoid custom architectural features. You should also consider a "conversion" ADU, such as turning an existing garage or basement into living space, as this eliminates the need for a new foundation and shell. For a detailed breakdown of all costs and permit requirements specific to our area, please refer to our comprehensive internal article titled Santa Clara County ADU Planning Permission: The Complete 2026 Guide to Permits, Costs, and Regulations. At Gadi Construction, we always recommend starting with a clear budget to avoid unexpected overruns.
Building an Accessory Dwelling Unit (ADU) involves careful planning, and several common mistakes can derail your project. A frequent error is underestimating the total cost, including utility connections, impact fees, and design expenses, not just the construction itself. Many homeowners also overlook local zoning rules, such as minimum lot sizes or setback requirements, which can halt progress. Another pitfall is failing to plan for proper drainage and utility infrastructure, leading to expensive retrofits. For a thorough understanding of these regulations in our service area, we recommend reading our internal article titled Santa Clara County ADU Planning Permission: The Complete 2026 Guide to Permits, Costs, and Regulations. Gadi Construction advises that skipping a professional site survey is another critical mistake, as it can reveal hidden issues with soil or access that affect the foundation. Finally, neglecting to secure the correct permits before starting work can result in fines or forced demolition.