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.

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

We are so grateful for Jessica's help in getting a permit for our addition. It's been a long…read moreprocess which she forewarned us about. We've never worked with an architect before so we didn't know what to expect. Jessica is a great listener. She actually listens to her clients and makes recommendations based on that. We highly recommend Jessica! We look forward to the completion of our project. Thank you Jessica and your team!

Thank you JSD for taking on our "small" addition of bedroom extension with full bath. Jessica and…read moreteam were easy to work with and answered/addressed our every concern and request. I provided her with an Illustrator idea plan that she changed into the legal schedules for city approval. Although we did not tap into her interior design expertise we witnessed a detailed oriented creative problem solver every step of our architect client relationship. Cheers!

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.

My wife and I had the pleasure of working with Geoff and his team on a full demolition and new…read moreconstruction of a single family home with ADU in San Francisco. We loved our experience and wholeheartedly endorse Winder Gibson to anyone looking for a full service architecture firm. From the outset, Geoff and his team demonstrated an exceptional understanding of our family's needs, which they transformed into a beautiful house design that resonates with our aspirations and lifestyle. We are currently transitioning to the construction phase, and are excited to raise our family in such a thoughtfully designed space. Also, Geoff and team are true experts at navigating the San Francisco permitting process. They efficiently moved us through permitting, both reacting to feedback from the city and helping us manage our neighbors. Honestly, we could not have permitted the house without their guidance. In a city where building homes can be difficult, the one two punch of beautiful design + the knowledge and skill to get it across the line was invaluable. We are so appreciative of Geoff and team.

We found our way to Winder Gibson through our realtor and could not be more grateful. We worked…read moreclosely with Geoff and Daniel to design our dream home. They were an absolute pleasure to work with and took on all details at every stage, including handling a difficult neighbor. At the same time, they were efficient and budget conscious, helping us stay on track both financially and time-line wise. They made what could be an overwhelming process move smoothly and enjoyably. We unreservedly recommend Winder Gibson.

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!

We worked with EDR to completely remodel a duplex into a single family home that hadn't been…read moretouched in 60 years. Eddie and Sarmad did a fantastic job in delivering the project. From the start of the design project, they used high quality sub contractors for design, engineering, and all the trades in the house. Fernando, our project manager was incredible. He approached the project with a keen eye for details and took total ownership over the sub contractors. He would stop by almost every night to ensure that the subs were performing their work and not leaving or damaging any other contractors' work. Sarmad is a problem solver. He sees an issue and thinks through how to solve it, then presents clear options to choose from. Throughout the process, we were not surprised by unanticipated expenses - all changes were clearly explained and we had the option to make changes via clear change orders. EDR uses Buildertrend for all program management and billing, which made payments, change approvals, and scheduling tracking seamless. While this sounds like a basic requirement in 2026, not all contractors use these services which just adds friction to the process. We couldn't recommend EDR more for the quality of work on our house, the schedule execution, care for detail, and just taking care of our project. Along the way, we never felt nickel & dimed, and the value of their services definitely exceeded our expectations.

We didn't end up hiring Eddie, Sarmad and the EDR crew but based on the quality of their work and…read moretheir honest and straightforward professionalism, we would definitely consider working with them in the future. We visited a gorgeous property they remodeled and it was designed impeccably and the quality of work also looked very good. It was also clear how much the owners loved Eddie and Sarmad and let us spend a long time visiting their home. We're grateful to Eddie and Sarmad for their patience with us as doing a first time ground up build is a huge investment for us and we had a lot of questions and concerns. They also went above and beyond their normal bid process when we asked for a more detailed bid for our budgeting purposes. Highly recommend reaching out to EDR!

I want to express our gratitude for Zenith Engineers Inc. prompt, professional, and outstanding…read moreservice throughout our remodeling project. From the very beginning, we were impressed with Senthil, Ryan and other members of Zenith team's level of professionalism, prompt response, architectural knowledge and effective communication.This level of service was seamless through our entire engagement with Zenith Engineers Inc., from obtaining the building permit to successfully passing all necessary inspections by the SF Building Department. No one questions their architectural work because they are so good at what they do. We had some initial concerns after reading negative reviews, but as the project progressed, it became clear that those comments were based on personal grievances, rather than valid concerns. The team at Zenith Engineers Inc. has a high level of professional ethics and integrity. Zenith's management team had explained to us early on in the project, the strict adherence to code and compliance was paramount throughout the project. If Zenith compromises to satisfy unsatisfied clients, the building will end up being non-compliant and more importantly unsafe. We truly appreciate Zenith's commitment to quality and integrity, even if it means earning a few negative reviews along the way, which seem rather unfair to them as they are simply doing their job. I am extremely satisfied with the professional and excellent work the team at Zenith Engineers Inc. provided us and will hire them in a heartbeat for all our future structural and/or seismic engineering needs. Thank you Senthil, Ryan and the Zenith engineering team for your professionalism and support. It was our best decision to work with you and experience such high standard of professionalism, work ethic, and integrity.

After having used Zenith for multiple projects in the last few years, looks like it's finally time…read moreto look for someone else for the next one. We started using Zenith because of its responsiveness and effectiveness when it came to structural design. With them as part of our team, we were able to keep up with the City submittal and response timelines we had set. Fast forward to today, and we can't get a hold of anyone. When we do, it's always an excuse for why they didn't respond, without a resolution. We sent them the last City comments 30 days ago and have yet to get anything viable to re-submit back to the city. Given that this is a 30-unit hotel project, going with a different firm now will mean a complete re-design of the project; an absolutely painful exercise that will set us back months. Zenith knows that. So it's absolutely shameful for them to act in a way that would even suggest that our only choice is to get the entire project re-designed by another firm just to have it keep moving forward. So much for "we respond to emails within 30 minutes and always answer phone calls" as outlined on one of their online profile. Knowing how we were treated on this round of City comments and the fact that the entire company seems complacent about what they try to embody in their rhetoric, I would stay away for any future project.

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.

We hired Level Up builders in November of 2024 for a kitchen remodel . We had interviewed two other…read morecompanies but ultimately felt the most comfortable going with Eli our salesman and project manager. The pace of the job was very smooth right off the bat and only picked up once the work started. During the design phase the team including Liane were very pleasant to work with. Liane was extremely patient and helpful while she met us at two design stores to assist us in choosing colors and layouts. Once the work started, we were very impressed with the site prep as Eli delivered on keeping as much dust out of the the rest of the house. He made sure crew setup plastic sheeting throughout the whole bottom floor with zipper doors included so we could still access the living room and upstairs. From here, we were very pleased with the pace of things. Eli and his team are very eager to work and do not make you wait. The demo happened very quickly and before we knew it we were moving very quickly through rough electrical and plumbing. The rest of the job went very smoothly and ended up being ahead of schedule. At any time if something was not right, Eli was very open to our suggestions and critiques and always made sure his crew fixed the issue. Once the work was done Eli was very responsive and always made sure any minor issues/details were address and fixed.

We were searching for a contractor to continue along our home renovation journey with an extension…read moreproject. From start to finish the interactions had been very professional, respectful and timely. What sets this company apart was that they knew what they were doing, very experienced and had made the best use of our time in the two in person meetings that we had by answering all the questions we had and giving us exactly what my husband and I needed. We started out thinking we wanted an ADU extension but Nir gave us an honest take on what would work with our home and we were impressed. Out of several handful of people we met we would have gone with Level up if we decided to start the project and hope they pick up our call when we are ready again in a few years. Thank you Nir, Ruth and the rest of the team.

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!