ADU Construction in Hayward
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- Our team builds detached backyard cottages in Hayward.
- Transform your unused garage into a living area.
- Get a stylish attached unit for multi-generational families.
- We convert your basement into a cozy ADU.
- Our designs include compact urban studios here.
- Trust us for complete permit-to-construction management.
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..
In Hayward, homeowners are embracing creative ways to expand their homes without moving. At Gadi Construction, we specialize in building stylish, functional Accessory Dwelling Units (ADUs) that add space, comfort, and long-term value to your property. Whether it’s a private home office, a modern rental suite, or an in-law unit, our team handles every project with precision, care, and expertise.
Each ADU we build in Hayward reflects the city’s balance of diversity, convenience, and modern design. From the peaceful neighborhoods near the Hayward Japanese Gardens to the lively downtown area, our designs enhance both function and curb appeal while blending perfectly with your home’s architecture.
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.
Beautifully Designed ADUs for Every Hayward Home
Hayward’s variety of home styles inspires us to create ADU designs that are practical yet full of character. At Gadi Construction, we combine innovative layouts, high-quality materials, and a thoughtful design approach to ensure every ADU complements your lifestyle and space. Whether you want to generate extra income or create more room for family, our ADUs are built to meet your needs beautifully.
Here are six popular ADU styles among Hayward homeowners
A stand-alone mini home perfect for guests, rentals, or extended family. It offers full privacy, modern amenities, and a warm, inviting design that blends effortlessly with your backyard.
Turn your unused garage into a fully equipped living area. With a smart layout, kitchenette, and bathroom, this option is affordable and maximizes your existing space efficiently.
A great option for multi-generational families, this design connects to your main home but maintains separation for comfort. It’s ideal for parents, teenagers, or long-term guests.
If your Hayward home includes a basement, converting it into an ADU is a smart choice. With proper lighting, insulation, and modern finishes, it becomes a cozy and stylish living area.
A small but sophisticated ADU layout that focuses on space-saving design. Ideal for city living, it includes smart storage, minimalistic décor, and efficient energy systems.
Perfect for remote work or personal projects, this ADU offers a quiet, inspiring environment. With built-in storage and great lighting, it’s a peaceful place to stay productive at home.
Complete ADU Construction Services in Hayward
At Gadi Construction, we make the ADU process simple and stress-free. Our experienced team manages everything from city permits and design planning to construction and finishing. We focus on delivering durable, code-compliant, and energy-efficient ADUs that match your property’s layout and your family’s needs.
Our services include:
- ADU Design & Floor Planning
- Permit Acquisition & Zoning Approval
- Framing, Plumbing & Electrical Work
- Kitchenette & Bathroom Installation
- Flooring & Interior Finishes
- Sustainable, Energy-Efficient Options
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.
Build Your Hayward ADU with Gadi Construction
Expand your living space and increase your home’s value with a custom ADU built by Gadi Construction. Our expert team delivers personalized designs, reliable craftsmanship, and excellent communication from start to finish. Contact us today for a free consultation, and let’s create an ADU that fits your lifestyle and enhances your Hayward home.
Related Projects
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 budget between $350,000 and $500,000. This price range accounts for design, permits, site work, and construction. A 1200 sq ft unit is considered a large ADU, often requiring a two-story design or a detached structure with a garage conversion. Costs are driven by local labor rates, material prices, and strict California energy codes. For a detailed breakdown of building methods, 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 guide compares prefabricated options versus custom builds, helping you decide which approach fits your budget and timeline.
The cheapest option for an ADU is typically a prefabricated or modular unit, which can significantly reduce construction time and labor costs compared to a custom-built structure. Converting an existing space, such as a garage or basement, is often the most budget-friendly route, as it avoids the expense of a new foundation and shell. For homeowners in the Santa Clara CA and San Jose CA area, a studio or one-bedroom layout is the most cost-effective design, minimizing square footage and material needs. It is crucial to plan carefully, as site preparation and utility connections can still add up. For a complete breakdown of local requirements and expenses, we recommend reviewing our internal article titled 'Santa Clara County ADU Planning Permission: The Complete 2026 Guide to Permits, Costs, and Regulations' at Santa Clara County ADU Planning Permission: The Complete 2026 Guide to Permits, Costs, and Regulations.