Keystone Building Services, Inc.

Cesar and Gerardo did a fantastic job installing a zellige tile backsplash in our kitchen. Working with zellige tile requires special expertise--it doesn't handle like other kinds of tile and has its own requirements. Keystone's work meets the highest professional standards and their customer service is exceptional. They arrived punctually, protected our floors, got right to work, put in long hours, and thoroughly cleaned up after themselves. I would eagerly hire them again. I am beyond thrilled with my backsplash. I give Keystone my highest recommendation.

I couldn’t be more thrilled with my experience working with Keytone Building! They recently remodeled my kitchen and breakfast nook in my small home in Sonoma, and the results are absolutely stunning. From start to finish, Keytone was incredibly reliable, always showing up on time and staying true to the timeline. Their team was highly professional, responsive to my questions, and always offered thoughtful suggestions to enhance the design. The craftsmanship is top-notch, and they paid attention to every detail, making my space both functional and beautiful. What truly stood out, though, was their commitment to delivering quality work at a reasonable cost—something not always easy to find. I felt like I got incredible value for my investment. I highly recommend Keytone Building to anyone looking for a trustworthy, skilled contractor. They turned my vision into reality, and I couldn’t be happier with the results!

I recently hired Keystone Building for a project, and I couldn’t be happier with the results. From the initial consultation, Cesar was incredibly proactive and determined to make our vision a reality. When others insisted we needed an architect, Cesar went above and beyond, challenging the city on our behalf. Thanks to his persistence, we got approval without an architect due to the specific work we were doing. Cesar and his team did a phenomenal job, completing the project in just two weeks. They were exceptionally accommodating, detail-oriented, and responsive throughout. I highly recommend Keystone Building for projects of any size. They’re a consistent, honest, and dependable company—don’t hesitate to reach out to them!

Very through and professional. On time completion and great attention to detail. Knowledgeable and goes beyond expectations to make sure project is done properly. Highly recommend Gerardo and his crew.

Highly recommend this company for any home remodeling very professional had my bathroom full remodeled loved how it all came out

If you're looking for a reliable, trustworthy, and talented general contractor in Winters/Sacramento area, California, Gerardo Diaz and his team are the way to go! I had the pleasure of working with Gerardo when he built my home, and I must say, I was blown away by his quality of work and attention to detail. But what truly sets Gerardo apart from other contractors is his genuine care for his clients. When I moved to Winters during the Covid lockdown, I didn't know anyone in the area. But Gerardo and his team were there for me like family. From the start, he made sure that I felt comfortable and included in the project, always keeping me informed of progress and any potential issues. Gerardo is a perfectionist who takes pride in his work. He always ensures that the job is done right and to the highest possible standard. Even when I was away from home, I trusted Gerardo completely to take care of my house and my landscaping project, which he did beautifully. He is also very patient, and he truly cares about his clients, treating them as if they were family. I appreciated that Gerardo never recommended anything excessive or expensive. He always had my best interests at heart, and he was able to work within my budget while still producing top-notch results. Gerardo completed my project on time, and he was always willing to go above and beyond to ensure my satisfaction. Overall, I would highly recommend Keystone Building Services for any home-building or renovation project. If you want someone who will care for you like family and deliver impeccable results, Gerardo is the person to call. I'm grateful to have had the opportunity to work with him, and I'm sure you will be too!