Licensed General Contractor · CSLB #1106798
Licensed General Contractor in Marin County, CA
Remodels, ADUs, home additions, pools, and custom builds. Fully licensed, bonded, and insured. AI-powered permit planning via PlanPass.ai. Free consultation.
Get a Free ConsultationWhat Makes ConstruBay Different
ConstruBay is a licensed general contractor (CSLB #1106798) based in Mill Valley, serving all of Marin County. We combine local construction expertise with proprietary AI technology to deliver projects that are on time, on budget, and fully code-compliant.
Our differentiator is PlanPass.ai — our AI-powered permit analysis platform that reviews construction plans against Title 24 energy code, local zoning ordinances, building code requirements, and agency-specific submission standards before your plans are submitted. This catches issues that would otherwise result in plan check corrections, saving weeks or months of permitting delays and thousands of dollars in redesign costs.
We have built our reputation on transparency, communication, and craftsmanship. Every project gets a dedicated project manager, a detailed line-item estimate with no hidden allowances, and weekly progress updates. Our subcontractor relationships are built on years of collaboration — we work with the same trusted electricians, plumbers, tile installers, and finish carpenters on every project.
ConstruBay is fully licensed, bonded, and insured. You can verify our license status at any time on the California Contractors State License Board website using license number 1106798.
Our Services
Kitchen Remodels
Complete kitchen renovations from layout redesign to cabinet installation, countertops, appliances, lighting, and flooring. Custom and semi-custom cabinetry, quartz and natural stone countertops, professional-grade appliances.
Bathroom Remodels
Luxury bathroom remodeling with walk-in showers, freestanding tubs, heated floors, custom vanities, and Schluter waterproofing systems. Spa-inspired design for primary suites and guest bathrooms.
Whole House Remodels
Full-scale renovations that transform your entire home. Open floor plans, updated kitchens and bathrooms, new flooring, lighting, windows, and mechanical systems. Design-build from concept through completion.
Home Additions
Second stories, room additions, bump-outs, and sunrooms. Architectural design, structural engineering, foundation work, and seamless integration with your existing home.
ADU Construction
Accessory Dwelling Units — detached, attached, garage conversions, and JADUs. Full design-build service including permits, construction, and utility connections. AI-powered permit planning via PlanPass.ai.
Custom Pools & Pool Houses
Custom pool design and construction, pool houses, outdoor kitchens, and hardscape. Gunite, pebble finish, automation systems, heating, and landscaping integration.
Areas We Serve in Marin County
ConstruBay serves all communities in Marin County, from the waterfront towns of Sausalito and Tiburon to the inland communities of San Anselmo, Fairfax, and Novato. We understand the unique building requirements, Design Review Board processes, and permitting timelines for each jurisdiction.
Why Hire a Licensed General Contractor
Hiring a licensed general contractor protects you legally, financially, and structurally. In California, any project over $500 (including labor and materials) legally requires a licensed contractor. Working with an unlicensed contractor means no recourse through the CSLB if something goes wrong, no guarantee of insurance coverage, and potential issues with home insurance claims, resale, and code compliance.
A licensed GC carries general liability insurance (typically $1M to $2M), workers' compensation insurance for employees, and a contractor's bond. These protections mean that if a worker is injured on your property or if work is defective, you are not personally liable.
Licensed contractors also understand building code, pull proper permits, schedule required inspections, and ensure that all work is done to code. Unpermitted work can result in fines, forced removal, and significant problems when you sell your home.
Our Process
Consultation
We meet at your property to understand your goals, assess existing conditions, and discuss budget and timeline. You get an honest evaluation of what is feasible and what it will cost.
Design & Estimating
Architectural design, engineering as needed, and a detailed line-item estimate. Our PlanPass.ai technology pre-analyzes plans for code compliance before permit submission.
Permitting
We handle all permit applications, plan check responses, and agency coordination. Our experience with Marin County building departments means fewer revisions and faster approvals.
Construction & Management
A dedicated project manager coordinates all trades, manages the schedule, and provides regular progress updates. Quality inspections at every stage ensure work meets our standards and building code.
PlanPass.ai gives ConstruBay clients a technology advantage that no other Marin County contractor offers.
General Contractor FAQs — Marin County
Ready to Start Your Project?
ConstruBay is Marin County's technology-forward general contractor. Licensed, bonded, insured, and powered by PlanPass.ai. CSLB #1106798.
Get a Free ConsultationOr call us directly: (415) 968-9494 · CSLB #1106798