ADU Construction in Union City
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- Our team designs custom ADUs for Union City.
- Turn unused garages into beautiful living spaces.
- Let us handle all permits and city approvals.
- Trust us for detached backyard units with privacy.
- We build two-story ADUs to maximize your property.
- Get a seamless, start-to-finish construction process.
Why the Bay Area Chooses Gadi Construction
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..
Our home remodeling project is finally complete (almost 2 year ordeal), but team at Gadi Construction made this navigation manageable.<br><br>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.<br><br>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.<br><br>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.<br><br>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.<br><br>Thank you, Millie, and thank you to everyone at Gadi Construction for helping us get our home back.
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 thank you to everyone at Gadi Construction for helping us get our home back.
Had a great full bathroom remodel. Went very smoothly and our project manager, Itay, was always quick to respond and on top of things. He was very helpful and efficient. We are very pleased with the finished project and will definitely reach out to GADI for our next project.
I just wrapped a primary bathroom remodel with GADI.
Effie was a fantastic design partner – he understood our initial vision and worked with it to come up with something even better that we love.
Nadav did an amazing job managing the project. Communication throughout was constant & immediate via text, and we got the project done quickly and with minimal fuss. His team on the ground was also great across the board.
I'm hoping to work with Nadav & Effie on another project soon, and I highly recommend GADI!
I just wrapped a primary bathroom remodel with GADI.<br><br>Effie was a fantastic design partner – he understood our initial vision and worked with it to come up with something even better that we love.<br><br>Nadav did an amazing job managing the project. Communication throughout was constant & immediate via text, and we got the project done quickly and with minimal fuss. His team on the ground was also great across the board.<br><br>I'm hoping to work with Nadav & Effie on another project soon, and I highly recommend GADI!
I requested a quote for a job I need done and I had the pleasure of meeting Itay today. He was very professional and kind. Had good energy and reassured me that he will do everything he can for the best outcome. This is more of a review on Itay and I will update if I decide to hire them. But the initial process of getting a quote done was great because of Itay.
I recently hadflood damage to my home which requires extensive remodeling. I called a number of contractors And I was most impressed with Millie from Gadi construction.
Though we haven't gotten to the point of actual construction yet , Millie has come out and given me excellent guidance for remodeling bathrooms, kitchen, living area. I've never done remodeling before so it was nice to have somebody like Millie to
' hold my hand,' and take some of the stress off of making some major decisions. She has since returned phone calls promptly and feels more like a friend helping me rather than a person I hired or may hire.
Whether we use you or not in the end thank you Millie for helping me during this difficult time and I hope others see this review and can take advantage of your nice , kind personality and expertise.
Great experience with Gadi on my bathroom remodel. He hired experienced sub-contractors and made sure they showed up on time. Pricing is fair for the work done.
GADI had helped me in demolishing a big mirror wall and remodeling it into a dinning room. I couldn't be happier with the result. Esther and her crew were just amazing and made my dream came true. Great job!
Adding an Accessory Dwelling Unit (ADU) is one of the best ways to create extra space, boost property value, and bring flexibility to your home. At Gadi Construction, we design and build ADUs in Union City that combine comfort, functionality, and modern design, serving homes near landmarks like the Union City Sports Center, Sugar Mill Landing Park, and the Union City Historical Museum. Whether you want to add a guest suite, a private home office, or a rental unit, our team delivers high-quality craftsmanship with attention to every detail. We focus on creating ADUs that fit seamlessly with your home’s architecture and enhance the way you live.
ADUs are not just additional structures; they’re smart investments that offer lasting value. Our team ensures your new space is built to meet city regulations while maximizing design, space, and efficiency.
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.
Trending ADU Design Ideas in Union City
Union City’s mix of modern developments and quiet suburban neighborhoods inspires a range of ADU design possibilities. At Gadi Construction, we tailor each design to match your lifestyle, ensuring your new space blends beautifully with your home and surroundings.
Here are design ideas that homeowners in Union City love
Detached backyard units are ideal for creating independent living spaces for guests, family, or tenants. These self-contained homes offer privacy, open layouts, and easy access—all designed to match Union City’s contemporary home styles.
Attached ADUs expand your living area without taking up too much yard space. Perfect for growing families or multi-generational living, these designs provide both convenience and privacy while maintaining architectural balance with your main house.
Transforming your garage into an ADU is a practical and affordable way to add livable square footage. With upgraded insulation, lighting, and finishes, it becomes an ideal spot for a rental unit, guest suite, or creative studio.
For smaller properties, two-story ADUs provide extra room without increasing the footprint. These designs feature versatile layouts that can include a living area below and bedrooms or offices above—combining comfort with modern aesthetics.
A finished basement ADU provides privacy and warmth while making use of underutilized space. With proper waterproofing, stylish lighting, and smart layouts, basements can easily turn into cozy apartments or peaceful guest retreats.
Studio ADUs are perfect for homeowners who value simplicity and efficiency. These open, multi-purpose spaces work great as home offices, short-term rentals, or creative retreats designed to fit seamlessly into Union City’s modern homes.
Complete ADU Design & Build Services in Union City
At Gadi Construction, we manage every part of the ADU construction process with precision and care. From planning and permits to construction and finishing, our experienced team ensures a smooth and stress-free experience.
Our ADU construction services include:
- Custom ADU Design & Space Planning
- Permit Handling & City Approval
- Framing, Roofing & Foundation Work
- Plumbing, Electrical & HVAC Systems
- Interior Finishes & Smart Storage Solutions
- Final Inspection & Quality Check
We use durable materials and modern techniques to ensure your ADU is efficient, beautiful, and built to last for years to come.
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 Your Union City ADU Project Today
Ready to expand your home with a stylish and functional ADU? Gadi Construction is here to make it happen. Our expert team will design and build an ADU that enhances your lifestyle and increases your home’s value.
Contact us today for a free consultation, and let’s begin planning the perfect ADU addition for your Union City property.
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