Several of my clients have used Alex for ADU and remodels. All very happy with his services,…read moreresponsiveness, prices and knowledge.

I've worked with many talented professionals, but Alex Tzang stands out as one of the best…read morearchitects I've collaborated with. He has an exceptional ability to translate vision into thoughtful, functional, and beautifully executed designs. Alex listens carefully, understands goals and constraints, and consistently delivers creative solutions that exceed expectations. His communication is clear, his process is organized, and he works seamlessly with contractors and stakeholders to keep projects on track. I highly recommend Alex Tzang to anyone seeking an architect who combines creativity, precision, and professionalism.

As a structural engineer, I have worked with James on many projects. He is a seasoned pro who…read moreunderstands the balance between art and science, which makes our projects efficient and successful. He is fun to work with and a high-quality architect. We recommend him for your project!

We are in the process of rebuilding our home. Jim helped with the design and plans. He probably…read moresaved our marriage. Think Designing for the Sexes. Great guy; great to work with.

The Kastrop group are very professional company. My house was a total re-build and both Mike &…read moreBrian made this incredible task go very smooth. I would definitely use them again and would recommend the Kastrop Group !!!

We found The Kastrop Group through the Better Business Bureau. We were looking to renovate about…read more50% of our home and raising the floor in our laundry room to create a 2nd bathroom for the house. Brian V. came over to check out our house and to see if our expectations were realistic. He was very calm and organized. We found him very knowledgeable, especially about the San Mateo County permit & planning department. We interviewed a couple of other architeture firms, but found Brian at The Kastrop Group to be the best. Once we hired Kastrop, Brian quickly set up a time to come measure the entire house. Our 80 year old cottage had no central air/heat, so Brian referred us to an engineering firm that would help work out all the  computations that the permit department would need to approve this addition. As we moved through the architectural design process, Brian came up with solutions that would give us what we needed, along with a few suggestions that would provide more storage near our new second bathroom. We found Brian and Kastrop to be very accomodating with no drama. We like it when there is no drama. Once the architectural drawings were approved, we wanted to know if we had budgeted enough for the renovation. So, Kastrop had a General Contractor look at the plans and visit our house to give us some preliminary numbers. This was a big help for us and we were so thankful for this extra step. The Kastrop Group is an outstanding architecture firm that took us through the entire architecture design process with a gentle hand and no drama. We were grateful for their professionalism and their recommendations. If you are considering renovating your house, your first stop should be The Kastrop Group for impressive architectural expertise and being a great partner to navigate the county permit process.

I recently had the pleasure of working with Eyal. He demonstrated incredible skill and expertise…read moreand went above and beyond to deliver an outstanding result which got me access to an over the counter permit with SF's building department - which saved a lot of headache! His attention to detail and ability to understand and translate my vision into reality was truly remarkable. He took the time to listen to my ideas and requirements, and then used their expertise to create a design that got though the approval process without any delay. Throughout the entire process, he maintained a high level of professionalism and communication and kept me informed every step of the way Eyal's work truly speaks for itself, and I loved working with such a skilled, talented and reliable architect!

Working with Prestin Ravid Architects on our home addition and renovation has been amazing…read more Navigating the City of Palo Alto's complex permit process could have been stressful, but Eyal and his team made it smooth and enjoyable. With Eyal's extensive experience, his strategic, efficient approach and clear communication helped us get our permit in about half the expected time. His designs are thoughtful, detail-oriented, and perfectly balance aesthetics and practicality. Highly recommend!

Kyle designed my new house from a SB9 subdivision in San Jose. He is very patient and courteous,…read morevery knowledgeable about the city codes, and always responds in time. His design is elegant and efficient, he oversaw the project and answered all the questions promptly even after the project is well into the late stage. Highly recommend!

This is a very long overdue review. We was lucky to came across Kyle's service at the beginning of…read moreCOVID when we wanted to remodel our home in Santa Clara. I don't know how to express our sincere thanks for everything he did for us. Kyle is very professional and super nice. He patiently work with us over 6 months to come up with the most economical and yet practical design and great flow of the space. He tirelessly met us constantly to make sure we were comfortable throughout the process. His experience and knowledge was integral of our project. His price was very reasonable. I would have pay much more for the experience I have with him. I highly recommend Kyle service to anyone.

I reached out to iBuilders Design and Build for a free estimate to enclose my existing Alumawood…read morepatio. They responded very quickly through Yelp and scheduled a phone consultation. Luis and his team spent about 30 minutes understanding my requirements and provided detailed and honest feedback. They explained that since my existing patio is built with Alumawood, enclosing it with a regular wood frame would not be appropriate. The proper options would be either to remove the existing structure and rebuild it from scratch or use a specialized Alumawood sunroom system. Even though iBuilders Design and Build could not take on my project, I truly appreciate Luis and his team for their transparency, professionalism, and willingness to provide honest guidance upfront. Their responsiveness and helpful advice made the process much clearer for me.

Great customer service! Very knowledgeable and informative. Looking forward to working with you in…read moremy next project. Highly recommended!

We had the pleasure of working with Jill Finn of TANGERINEdesign LLC when our longtime designer was…read moreunavailable -- so she walked into a situation where we were already feeling a bit off balance. But from day one, Jill exceeded our expectations. The project involved tearing down an old, dilapidated screened-in porch that had never really worked for us -- too cold in the winter, too hot in the summer -- and transforming it into a usable interior room. We wanted to keep the light and airy feel of a porch while gaining insulation, comfort, and year-round usability. We also wanted ideas for built-ins: maybe a window seat, maybe bookshelves -- we weren't quite sure. Other contractors over the years had taken one look at the porch and declined to get involved due to its age and condition. Not Jill. She had ideas right away. Jill brings so much energy, creativity, and practical knowledge to the table. Even while juggling big personal commitments (like her son's graduation across the country), she delivered several strong design ideas within a few weeks -- and they were fresh, inspiring, and budget-conscious. She collaborated easily with our civil engineer, adjusting her drawings quickly to meet his needs. She also understands our local codes and regulations really well, and met directly with our contractors to make sure her designs were realistic and executable before we got too far into the process. On top of all that, Jill has a fantastic personality. She made the experience fun and engaging, and she brought a sense of momentum and confidence that really helped us move forward. I can't recommend Jill highly enough -- her creativity, responsiveness, and enthusiasm make her a true gem. If you're considering working with TANGERINEdesign LLC, you're in excellent hands. Karen & Greg Marriner 6/22/25

My fiancee and I met with Jill to explore building an ADU in our backyard from the ground up along…read morewith a home expansion. We were glad that we chose Jill; she brings with her a wealth of knowledge in all facets of the construction phase, and she was very friendly and easy to talk to also! Most of the time we would ask her a question, then just let her talk, as she was very detailed with all of her answers and did a great job teaching. We also appreciated that Jill also has no problem telling you if your idea is a bad idea, but will provide the context and reasoning why. Lastly, we loved tapping her creative mind; she has the ability to look at a space and give you plenty of ideas for it that you might not have even thought of! We would definitely recommend her and would work with her again.

Bay Area Drafting Co gave us exceptional service for our residential remodel project. We were…read moregiven a set of drawings with a number of problems and Valerie cleaned up the drawings and prepared them perfectly for our bidding process. She put everything together is a professional and timely manner. We would recommend BADC to any company needing quality and detail oriented drafting services.

We were all set to apply for a permit except for drafting plans. Not many want to work on a small…read moreproject, but luckily for me, when my contractor called Valerie, she had just finished a big job, and immediately got to work on my project. She is prompt, efficient, very patient in trying to make certain that I understood the plans, and very nice. The day after I received her final plan my contractor was able to get the permit for our kitchen extension and remodel. I highly recommend this company. You will definitely get your money's worth.