Code Compliant
Completed
Projects
Years of
Experience
21st Century Home Improvement is a family owned and operated, licensed, and insured general contractor with more than 30 years experience in the home improvement industry. We operate throughout the Bay Area, including San Francisco, Marin, Alameda, Contra Costa, and San Mateo counties. Our main office is in San Francisco.
A+ rated by the Better Business Bureau and trusted by Bay Area homeowners for over 30 years. Family owned, reliable, and proven.
From kitchens and bathrooms to roofing, windows, siding, and seismic retrofitting. We handle projects big and small, start to finish.
High-quality work, clear communication, and care at every step. Built to last and designed for the way you live.
We design and build bathrooms that balance comfort, durability, and clean design. From layout changes to tile, fixtures, and waterproofing, we manage the entire remodel with precision. The result is a bathroom that feels refined, functional, and built to last.
Our kitchen remodeling services focus on better flow, smarter storage, and long-term value. We handle everything from cabinetry and countertops to lighting, flooring, and finishes. Each kitchen is planned around how you actually use the space, not a one-size-fits-all design.
Finish carpentry adds the details that define the quality of a home. We install trim, molding, doors, built-ins, and custom woodwork with clean lines and tight tolerances. Every detail is measured, fitted, and finished with care.
New siding improves both curb appeal and structural protection. We install siding systems that are durable, weather-resistant, and appropriate for Bay Area conditions. Each project is completed with proper flashing, sealing, and attention to detail.
Replacing old windows improves energy efficiency, comfort, and noise reduction. We install high-quality windows with proper sealing and clean interior and exterior finishes. The upgrade delivers better performance without compromising your home’s appearance.
A reliable roof protects everything beneath it. We install and replace roofing systems built to withstand Bay Area weather while maintaining proper ventilation and drainage. Our roofing work prioritizes durability, safety, and long-term performance.
Exterior painting protects your home while enhancing its visual appeal. We prepare surfaces thoroughly to ensure strong adhesion and lasting results. The finished exterior looks clean, cohesive, and built to handle the elements.
We design and build accessory dwelling units that add living space and long-term property value. From planning and permits to construction and finishing, we manage the entire process. Each ADU is built to meet local codes while fitting seamlessly with your property.
Seismic retrofitting strengthens your home to better withstand earthquakes common in the Bay Area. We reinforce foundations and structural connections to reduce the risk of serious damage. The result is improved safety, code compliance, and peace of mind.
Foundation repair restores the stability of your home by addressing cracks, settling, and structural movement common in Bay Area properties. We strengthen and stabilize the foundation to prevent further damage and support the structure above. The result is improved safety, long-term durability, and peace of mind.
If you want to contact us directly, feel free to give us a call, send us an email or send us a message below.
Tell us about your project and get a professional estimate from our team
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