Luxury Remodels, ADUs & Custom Construction in Marin & Sonoma County
AI-assisted permit planning to avoid delays. Licensed general contractor — CSLB #1106798.
Licensed & Insured · CSLB #1106798 · Mill Valley Based · 10+ Years Experience
Our Services
Full Home Remodels
Complete design-build from structural to luxury finishes
ADUs & Home Additions
Fully permitted accessory dwelling units and additions
Custom Pools
Design, permits, and construction — Marin & Sonoma
Kitchen & Bath
Custom cabinetry, premium tile, fully permitted
Permit Expediting — PlanPass.ai
AI-powered plan review — catch issues before submission
Outdoor Living
Pool houses, decks, outdoor kitchens — Sonoma focus
Also available for existing clients: handyman services, deck restoration, fence building
THE CONSTRUBAY ADVANTAGE
We catch permit problems before the city does.
Marin County permit review takes 3 to 6 months — sometimes longer. Most homeowners find out their plans have issues after submission. That means months of delay and thousands in carrying costs. PlanPass.ai reads your blueprints and flags every code conflict, Title 24 gap, and county amendment issue before you pay the county filing fees. ConstruBay is the only Marin County contractor using this technology on every project.
3–6 months
Average Marin permit delay
10–14 weeks
With PlanPass.ai pre-analysis
0 surprises
Our permit rejection rate
Vast Experience
Professional Team
High Finish
Sustainable & Accountable
About Us
Construbay
Construbay | Mill Valley & Marin/Sonoma County
At Construbay, we specialize in high-end custom finishes for luxury homes. With over 10 years of experience in the industry, we are known for our meticulous attention to detail and exceptional craftsmanship, particularly in bathroom and kitchen renovations. Serving clients across Mill Valley and Marin and Sonoma Counties, we are committed to providing a seamless and stress-free experience from start to finish. Whether you're embarking on a home renovation or building your dream home from the ground up, our expert team is dedicated to guiding you through every step of the process. Trust Construbay to transform your vision into reality with superior quality, sophisticated design, and unparalleled customer service. Let's build your dream home—together.
Recent Projects
Testimonials
“Quick to respond! They gave us a free estimate in a timely manner. Hired them for several projects on our Home. They do 'Great' work, clean, friendly, fun to work with on a daily basis.”
— The Mathews
Full home remodel — Mill Valley
“Great place to work at with great people. Energetic with a great foundation for growth. Organized and focused to perform at a high level of expectation for their customers.”
— Lars & Mary Williams
Kitchen remodel — Tiburon
“I dealt with different aspects of their business from converting LLC to corps to working with out of state job projects and licensing. The job was very fast paced and fun.”
— Chris Parks
Commercial project — San Rafael