Welcome to  Simkins Design Build

Remodels and additions built to the highest standard.
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Top-Rated Home Builder near San Rafael
Welcome to Simkins Design Build

Welcome to Simkins Design Build, a premier custom home builder located in Marin County. With over 20 years of experience in the construction industry, our team of skilled professionals is dedicated to bringing your dream home to life. Whether you have a specific design in mind or need help creating a custom plan from scratch, we have the expertise and resources to make it happen. Our commitment to quality craftsmanship and exceptional customer service sets us apart from other home builders in the area. Contact Simkins Design Build today and let us help you create the home of your dreams.
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Our Services

Simkins Design Build

General contractor, new construction, remodeling, design build, concrete specialist, deck specialist

A Marin County Contractor You Can Trust
Why Choose Simkins Design Build?

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Thank you for considering Simkins Design Build, based in Marin and the surrounding counties for your custom home building, addition, or remodeling needs. With over 20 years of experience in the construction industry, we have a proven track record of delivering exceptional quality and customer satisfaction. Our team of skilled professionals is dedicated to ensuring that your project is completed on time and within budget, and we take great pride in our attention to detail and commitment to excellence. In addition to our expertise and dedication, here are several other reasons to choose us for your construction needs:

Expertise & Experience
As an established home builder in Marin, Napa & Sonoma Counties, we have a proven track record of successful projects in the area and are familiar with the local building codes and regulations.

Quality Craftsmanship
We take pride in our work and use high-quality materials and techniques to increase the durability and value of our clients' custom homes.

Personalized Service
We work closely with our clients to understand their needs and preferences, and are responsive and communicative throughout the building process, so we can provide a more personalized and enjoyable experience.
Innovative Design Solutions
We are skilled at coming up with creative and unique design solutions that meet our clients' needs and tastes and can help make their custom home truly one-of-a-kind.
Strong Community Ties
We are actively involved in San Rafael and the surrounding communities and have established relationships with local subcontractors and suppliers to provide valuable connections and resources for our clients.
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Licensed - Bonded - Insured

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Our Mission
A Commitment to Quality

At Simkins Design Build, our mission is to provide our clients in Marin County, Sonoma, Napa, San Francisco and surrounding areas with exceptional custom home building, additions, and remodeling services that exceed their expectations. We are committed to delivering top-quality craftsmanship and using only the highest-grade materials. Our team of skilled professionals is dedicated to creating custom homes and living spaces that reflect our clients' individual styles and needs. We strive to build long-term relationships with our clients based on trust, honesty, and transparency, and we are committed to delivering the best possible customer experience from start to finish.
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Let Simkins Design BuildTurn Your Vision into Reality!

Ready to get started on your dream home? Contact us today to schedule a free consultation.
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What People Are Saying About Us


"We had an amazing experience working with Simkins Design Build on our custom home. From start to finish, the team was professional, reliable, and always available to answer our questions. The final product exceeded our expectations and we are so happy with the result. We would highly recommend Simkins Design Build to anyone in need of custom home building services."
— Chris P.
"We were so impressed with the level of detail and craftsmanship that went into our home remodel. The Simkins Design Build team was able to take our vision and bring it to life, and the final result is exactly what we hoped for. We would not hesitate to recommend Simkins Design Build to others."
— Angela W.
"Simkins Design Build did an incredible job on our home addition. The team was able to seamlessly blend the new space with the existing structure and the finished product is truly breathtaking. We are so grateful to have worked with such a talented and dedicated group of professionals."
— Eddie R.