Custom Home Builder in Larkspur

We serve Northern California across three regions: the San Francisco Bay Area, Greater Sacramento, and the Central Valley. Our published guides cover 14 counties and 88 cities. Our Castro Valley and Sacramento offices support local estimating, permit coordination, and project planning across these regions.

Financing may be available for eligible projects with approved credit. Available terms depend on lender approval, project scope, and current programs. Your project manager can review the options that apply before work begins. We also accept checks, ACH, and major credit cards.

Yes. Hamilton Exteriors holds CSLB License #1078806, active general liability coverage, and the required contractor bond. We also hold GAF Master Elite and James Hardie Elite Preferred credentials. We can provide current proof of coverage before work begins.

Permit requirements depend on the project scope and local jurisdiction. Hamilton Exteriors coordinates required applications, plan documents, corrections, and inspections. Permit fees and allowances appear in the proposal before construction begins.

A Larkspur custom-home price needs the design, finishes, and site conditions. Request separate costs for design, engineering, permits, site preparation, construction, and landscaping. For a sloped or difficult-access lot, ask what investigations the estimate assumes. Confirm whether land, appliances, and utility work are outside the quoted scope.

A Larkspur custom-home schedule needs separate design, approval, and construction milestones. Ask when foundation work, framing, building systems, and finishes can start. Confirm design decisions and the sequence of trades before relying on a move-in date. Request a written project schedule and a process for reporting changes.

Custom homes in Larkspur cost $350 to $800 per square foot, with a typical 2,500 sq ft home ranging from $875,000 to $2,000,000 including design, engineering, permits, and construction (Hamilton Exteriors 2024-2026 project data). Hillside lots and luxury finishes push toward the higher end. We provide fully itemized estimates at every phase with a guaranteed maximum price at contract signing.

California law requires a licensed architect or engineer to design residential structures over two stories or exceeding certain size thresholds. Even for single-story custom homes, detailed architectural plans with structural engineering are required for building permits in Larkspur. Hamilton Exteriors' founder Alexander Hamilton Li is a licensed architect and general contractor, so design and construction are handled in-house under one contract — no separate architect needed.

A hillside lot in Larkspur needs a site-specific feasibility review. Confirm planning constraints with the city, then have qualified professionals assess soil, slope, access, drainage, and structural needs. Ask whether geotechnical work or fire-zone requirements apply to the parcel. Do not choose a foundation system or assume the lot is buildable before that review.