Custom design services for remodels, additions, and new home builds, focusing on spatial optimization and aesthetic appeal.
End-to-end management from design through construction, ensuring seamless coordination and on-time delivery.
Comprehensive remodeling of kitchens, bathrooms, and entire homes, including historic property updates.
Full-service construction of new homes, from foundation to finishes, with attention to detail and quality.
Assistance with building permits, code compliance, and coordination of inspections to streamline the process.
We worked with Jason, Lauren and their team to remodel our 100-year-old house. The project included redesigning the kitchen/nook/courtyard/dining room area, three bathrooms, and adding a bonus room downstairs, plus various smaller projects. They delivered on their promise to manage everything from design to final inspection, on time and within budget. Their organized and thorough planning phase made the difference - we avoided the unreliable contractors, excessive delays, and preventable issues that many of our friends have experienced in their remodels. Not that we didn't hit some bumps along the way, but we could always trust that Jason would problem solve with us and his team to make it right. We highly recommend AT6, they were definitely the right choice for us!
Great at design, terrible at build In 2020, I hired this company to design and oversee an extensive remodel of my Berkeley home. The design process went very well—the team was very helpful, and the architecture and engineering work, though pricey, was very collaborative. The build was not so great. Some subcontractors were competent, others delivered poor work, employees quit and overall supervision by the Owner / GC ranged from non-existent to substandard. The roof leaked, glass was defective, floors are uneven, walls are not plumb, and drywall was not finished. A costly French drain failed immediately. The bathtub leaked on first use, and new systems appeared untested. After more than two years, I have been able to navigate through most of the fixable issues. But the worst failure remains the brand-new HVAC. The system I paid for was swapped without notice or approval for a substandard model. The new system was poorly installed and incompatible. Ducts were crushed, brand new cabinets were hacked apart, and numerous “repair visits” (twice with six month disappearing acts by the sub) produced no resolution. The system does not work. The Owner / GC has washed his hands of the matter and ghosted me. I have now retained legal counsel and am going through the dispute resolution process. Given all of the great reviews I was excited to work with this company but given my experience I cannot recommend them.
When we started on our remodel, we were really attracted to the idea of design-build and having one firm be all-in through the process so it would be less stressful for us. We looked at a couple of design-build companies, and AT6 hit the sweet spot of really high-quality work without being outrageously priced. AT6’s design opened up and reorganized rooms so that they make more sense spatially than what we had. Everything is lighter, flows better, and the house feels much more cohesive. We were definitely surprised at how uncomplicated the process was. With AT6’s phenomenal communication, management, and onsite direction, the project was done on time and within budget, which you almost never hear. We’ve been so happy with the outcome. We constantly sing AT6’s praises and have sent many people their way. Their communication and work were so spot-on. I think we got more than we paid for!
I hired Jason/AT6 to help me design and build my dream home on a plot of land that I found in Mill Valley. From the beginning, he helped me evaluate whether the land purchase made sense by visualizing the possibilities. I had hired Jason before as an architect for a previous remodel -- so I knew he was an amazing designer -- but once we started on this project, I discovered he was an equally talented builder. The entire AT6 team was extremely organized. They were not easily ruffled and were true problem-solvers. I appreciated that they would bring me decisions to make and always have multiple options. I was a very busy executive during this process, so having them keep me on track was essential. Working with them always felt like a partnership. I was also surprised that, despite making a lot of modifications as I went, they completely nailed the budget. We were within 5% of original budget on a multi-million-dollar build. It’s hard to imagine there wouldn’t be something really hard or unanticipated to overcome in a project of this size, but it was incredibly smooth. Also, they delivered my home right on schedule! That just seems exceptional these days. I'm now a big believer in the design/build process. I was skeptical at first, but I found it to be significantly more efficient and an ultimately faster way to go. When you get into the build phase, new details emerge that were not obvious when the design was just on paper. Having the architect be the same as the builder makes the inevitable modifications so much easier. There are not multiple parties to coordinate on changes, and the process is less expensive and time-consuming as a result. Also, AT6 designs with a builder’s mindset, so things are not unnecessarily complicated or costly to execute. They were able to create beautiful, high-end details that are designed for high utility and look more expensive than they are. They are practical without cutting corners, and design for beauty and function. Everyone who has visited my home is in awe, and it still feels to me like an incredible oasis every day. I am so happy with all the decisions we made, and wouldn't change a thing. Finally, and this is a true test for me, they have been responsive long after the house was finished. Whenever I've had a question or something needed to be adjusted, they have made themselves available. They really have been partners for the long haul and I highly, highly recommend them!
When our next-door neighbor’s massive trees collapsed on our 1930s house one stormy afternoon in 2023, we were abruptly evicted from our dream home which sustained severe structural and water damage. In 2018 AT6 Design-Build remodeled our home; we were very pleased with Jason and his team for making it so much more functional and attractive. After the house being just the way we wanted it, we thought we were finished with construction, but unfortunately that only turned out to be a short-lived reality. On the day of the 2023 storm, the second phone call I placed (after first filing the insurance claim) was to Jason who expressed willingness to help us rebuild. Over the subsequent months, AT6 architects produced floor plans, obtained the building permit (a one-day process!), assisted us in selecting interior finishes (e.g., bathroom tiles, fixtures, paint), and more. After construction mobilization, the lead architect worked hand-in-hand with AT6’s construction superintendent who was onsite daily to supervise and guide a parade of their preferred subcontractor as they performed demolition, framing, roofing, finishes, flooring, painting, and revamped mechanical, electrical and plumbing systems. Most notable, aside from their subcontractors’ high level of workmanship, was how AT6 orchestrated this succession of subs who showed up each day on time. As one sub finished, they were followed by another, such that there wasn’t an idle day that went by. The completion of major phases of work were followed by well-timed building inspections that passed smoothly. In addition to our delight that the reconstruction was completed in record time, the AT6 team was truly a pleasure to work with. They distinguish themselves by being personable, caring, responsive, reliable, creative, efficient, and honest. The few changes in personnel along the way were marked by a seamless handoff, maintaining the same level of quality and service. We are extremely thankful to AT6 for being supportive and compassionate, and for helping us through a most disruptive episode in our lives and making the house our home again.

Seamless design-build solutions for your dream home, from concept to completion.
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AT6 Architecture + Design Build is a premier San Francisco-based firm specializing in integrated design-build services for residential projects. We manage everything from initial architectural design to final construction, ensuring a streamlined, stress-free experience for homeowners. Our team excels in remodeling historic properties, custom home builds, and renovations, delivering high-quality work on time and within budget. With a focus on collaboration, problem-solving, and practical beauty, we transform spaces into functional, stunning homes that exceed expectations.
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