Custom ADU Builder Serving Homeowners in Greater San Diego, CA

An accessory dwelling unit can serve many purposes. You could build one to gain a home office with some much-needed separation from a busy main house. You could add an in-law suite attached to your home in order to better care for an aging family member. Or, you could even turn it into a rental property to boost your income. No matter what you want from an ADU, Green Room Design-Build will make sure it’s perfect for you. We are a custom ADU builder specializing in from-scratch builds here in the greater San Diego, California area without using any pre-fabricated elements.

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Detached or Attached ADUs

Your custom accessory dwelling unit can be built wherever you have available space and is most convenient for you. We have no problem attaching it to your home or building a freestanding structure.

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Flexibility in Design

Your custom ADU can serve one purpose, if you’re looking for something small and simple like a home office or fitness area. Or, it can be built with all the amenities of a home—such as a kitchen, bathrooms, bedrooms, and a laundry room.

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Sized to Your Needs

Worried about building a space that’s too small? Green Room can build your custom ADU to be up to 1,200 square feet in size, giving you and anyone else using the unit plenty of space to work with.

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Making Your ADU Project Simple

As your custom ADU builder of choice, Green Room will ensure your project goes as smoothly as possible from start to finish. Our process was designed to put our clients’ needs first and cover all of the bases so you don’t have to lift a finger yourself. You will, however, be heavily involved with the design process and will ultimately have the final say on a design you’re completely familiar with. Our team will keep you informed at all times and work closely with you to realize your vision.

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Five-Star Reviews

What Our Clients Are Saying

"I recently had the pleasure of working with Green Room Design Build on a project for my home, and I couldn't be more thrilled with the results. From start to finish, their team was incredibly attentive to detail and provided outstanding customer service. If you're looking for a company that is meticulous, provides excellent customer service, and is dedicated to finding the right solutions for your project, I highly recommend Green Room Design Build."

C. A.

Tampa, FL

"This company is fantastic! Jake and Josh helped us with the remodel of two bathrooms, along with an entire re-pipping of our condo. From start to finish this experience exceeded expectations. It's not often that a construction project goes to plan as far as budget, timing, and obviously looks. Can't say enough good things about this company, highly recommend. Also, Courtney is the best!"

Peter G.

Tampa, FL

"Green Room is a family business and they understood we had growing needs as a family. The entire staff ensured that they put our family first in this remodel from timely updates, a clean worksite, and finishing the job ahead of schedule. The results are captured in many of the pictures they showcase on their website and here on yelp so, you can see how amazing the results are for yourself. This company is the real deal and is what every family owned business should strive to be. We started as clients and now we feel like family!!"

Neal K.

Tampa, FL

"The team did a remodel for my parents back in 2021. We loved them so much they're now on my first home/remodel. Quality from start to finish. If you've ever had to deal with a tough HOA or Coastal commission, you know. They handled it all. I get regular updates on weekly progress/schedules and we are on track to be in on time."

Bruce J.

Tampa, FL

"Awesome family business, great team and easy to work with. They handled all the city and HOA headaches on our behalf. 10/10 recommend."

Aurora G.

Tampa, FL

"I have worked with so many GC's and subs over the past 3 years and none of them have impressed me like the GRDB team. They're cheaper than the massive GC's yet have far more attention to detail and stay on top of the project with far more vigor than those I've dealt with in the past. These guys will NEVER be a source of any delay. They perform quality control so I don't have to and their project managers (Landon and Josh) supervise every step of the way to make sure everything is perfect. They also don't nickel and dime you if you need any change orders. I would hire these guys 100 times over."

Arash M.

Tampa, FL

"We used the Green Room Team to remodel and expand our house…and were very pleased with them. We went from a 3 bed/2 bath to a 4 bed/3.5 bath with a freestanding garage. Not only did they expand our home, but they unlocked our property’s value, utility, and enjoyment! They were on time, and on budget…which can be rare in the construction world! They coached us well since inception, helped us navigate through every stage of the process, and have even been a resource and sounding board since completion. Jake, Josh, and Team are attentive, trustworthy, and wonderful. They are excellent communicators and detail-oriented. We would happily refer them to anybody looking to build a new house or remodel an existing home."

Williams Family

Tampa, FL

"The manner you approached the bid process, using pictures you had taken and clearly showing you understood what we were trying to achieve, was unique in the process of talking with potential contractors. One of the most compelling features of our project is the tongue and groove ceiling with stunning beams. Lowering the ceiling to allow for HVAC vents was both a functional innovation you devised, but also brings an extra warmth to the room. This was a true example of Design Well, Build Smart. We will always remember the energy and care brought to the process by an amazing and dynamic team. The finished project is beyond our original dream and we will always be indebted to the Green Room Team for making this dream a reality and helping us come home to excellence."

Kevin O.

Tampa, FL