ABOUT 9BUILDERS
Crafting Excellence, One Project at a Time
Family-owned construction company based in San Jose, California — transforming homes across the Bay Area since 2004.
Check Our PortfolioWho We Are
9Builders is a family-owned construction company founded by Hoang Nguyen, based in San Jose, California. With over 20 years of hands-on experience, we specialize in kitchen and bathroom remodeling, custom home construction, ADU building, and commercial renovations.
Family-Owned & Operated
Founded on trust, hard work, and a commitment to treating every project like our own home.
20+ Years Experience
Two decades of construction expertise across residential, commercial, and ADU projects in the Bay Area.
Licensed & Insured
Fully licensed, bonded, and insured — giving you complete peace of mind on every project.
Bay Area Specialists
Deep knowledge of local building codes, permit processes, and neighborhood standards across 15+ cities.
All Services Under One Roof
From design and planning through construction and final walkthrough, 9Builders handles every phase of your project. One team, one point of contact, zero hassle.
What We Offer
Complete construction services for every stage of your project.
Design & Permitting
Custom architectural plans tailored to your style and property. We navigate local regulations, secure permits, and ensure full compliance.
Construction & Management
Skilled builders bring your design to life using durable, high-quality materials. Project managers oversee timelines, budgets, and schedules.
Finishing & Support
Comprehensive interior finishes — painting, flooring, cabinetry, fixtures. Plus landscaping, exterior work, and post-construction support.
Our Foundational Values
Our core values guide every project — ensuring exceptional results and a positive experience for every client.
Quality Craftsmanship
The highest-quality materials and skilled techniques to deliver durable, beautiful results on every project.
Client-Centered Approach
Your satisfaction is our priority. We listen closely and maintain open communication to bring your vision to life.
Integrity & Transparency
Honest, straightforward service — keeping you informed at every step with realistic timelines and budgets.
Innovation & Sustainability
Modern solutions and environmentally responsible practices with sustainable materials and energy-efficient options.
What Sets Us Apart
We've built a reputation for excellence across the Bay Area.
Unrivaled Expertise
Our skilled professionals possess unmatched expertise in ADU construction, remodeling, and custom home building.
Personalized Solutions
Every customer is unique. We tailor solutions to meet your specific needs with customized options.
Timely Delivery
We value your time and guarantee prompt completion, enabling you to enjoy your new space sooner.
Our Services
From backyard ADUs to whole-home renovations — we do it all.
ADU Construction
Detached units, garage conversions, and two-story builds across the Bay Area.
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Home Remodeling
Kitchen, bathroom, and whole-home renovations that transform your living space.
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Kitchen Remodeling
Premium cabinetry, countertops, and modern layouts for the heart of your home.
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Bathroom Remodeling
Spa-quality bathrooms with luxury fixtures, tile work, and smart design.
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Frequently Asked Questions
Find answers to commonly asked questions about our services.
Some videos showcasing our recent work.
What Our Customers Say
Our clients are at the heart of everything we do at 9Builders, and their feedback reflects our dedication to quality and service. From beautiful remodels to innovative new builds, hear how we've transformed their spaces and exceeded their expectations.
Tommy, Yuna, and their entire team were amazing from start to finish. We hired them for a big project that included foundation work, a structural retrofit, replacing the PGE main service line, and installing a new 200-amp panel. It was a pretty major job, and honestly, we couldn't have asked for a better crew to handle it. Everyone was professional, polite, and knew exactly what they were doing. They showed up on time, cleaned up every day, and were super respectful of our space.
I hired 9Builders to work on my backyard and they did an amazing job. They built a nice structure that looks really great and added so much to my yard. The team was friendly and kept everything clean while they worked. The work was done quick and looked really good. Now they're working on the front of my house to add an extension, and I'm impressed how fast they worked. They finished the foundation in just two days...
9Builders transformed our kitchen into a beautiful, functional space. They listened to our ideas, offered great suggestions, and delivered high-quality work. The team was professional and respectful throughout.