AT6 Architecture + Design Build - San Francisco, California

Jay P.

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.

Ian F.

We worked with AT6 to remodel our downstairs, including a bathroom and a bedroom. They were very well organized, prompt in communication, and the project finished on time to the original timeline. The final remodel is beautiful and everything we wanted.

Jason O.

Jason and the AT6 design team have been the fantastic creative team behind the complete interior and exterior renovation of our home. We've worked with Jason for 10+ years and he's truly transformed our house into everything we envisioned (and more). Since he was a contractor prior to becoming an architect, he balances creativity and practicality into his designs in a way that few others can. And his design capabilities are endless given he designed our home renovation as well as our recent backyard update. On top being a great design/build team, Jason and his team are extremely responsive and a pleasure to work with. They work with your style to create a variety of options for projects and adapt designs based on feedback and their their wealth of experience. I highly recommend working with Jason and his team on any renovation or new construction projects as we could not be happier with how they transformed our home!

Geoff J.

Jason and AT6 were incredible to work with! We’ve remodeled 7 homes in our lifetime, and AT6 was by far the best experience we had! They took great care in transforming our home, which has been in our family for over 60 years, to one with modern features while keeping its historical character. Project was on-time and on-budget and Jason and team worked collaboratively with us to design and build our new home. Huge benefits using a Design-Build firm and AT6 is top notch in shaping your vision while helping you stay within budget.

Kate E.

We have done two large remodel projects with Jason and the AT6 team and I could not be more pleased. His design sense and communication are second to none. I have used other contractors and I hope never to do so again. His costs are accurate and fair. He has a great sense of what things will cost and whether your budget will get you what you are hoping to have.
Both projects were on time and on budget. There is nothing secretive with Jason. He can explain the work to a non construction person, he is available when we needed him for questions and his follow through is bar none.
Both homes we remodeled with him came out lovely and we get compliments all the time. And they have held up over time with no issues.
I have zero reservations about recommending him. You will be pleased with the process AND the results.

Lori R.

Jason and his team did a terrific job on an extensive remodel project of our flat. Jason has great taste and a good sense of "bang for the buck". I found I could trust his judgment. People really loved how it all turned out - Curbed SF even chose to feature it on their website! The AT6 people do high quality work and are a pleasure to deal with and we would not hesitate to work with them again.

Bryn J.

Jason and his team at AT6 were great to work with. We renovated a single family house in San Francisco (down to the studs, full house renovation), and very much enjoyed working with Jason. Jason's skill set (he is both an architect and a builder) is rare, and it makes for much better execution. Highly recommend!

Ronald H.

AT6 has completed a substantial renovation including both design and building on our home in Marin. We are delighted with the results and the process. Jason Langkammerer developed a wonderful design that fulfilled our needs. This was a reiterative process with the plans evolving as we assessed goals. The building phase had delays because of supply chain problems, but the builder was able to accommodate and keep the project moving. The physical results are of high quality, actually outstanding. Most important is the wonderful culture of AT6. We had great confidence in Jason and all of the others involved in the project. They were responsive to us and understanding of the unavoidable difficulties that we lived through during the renovation.