Custom Home Builder in Sunnyvale

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.

Most custom home builders in Sunnyvale are tradesmen-only — they build what an architect designs, often with costly coordination gaps. Hamilton Exteriors is different. Our founder, Alex Hamilton Li, is a licensed architect and general contractor. This means design and construction stay aligned from day one. Every material choice is priced during design, not after. The result is a guaranteed maximum price before construction begins, with a single point of accountability from concept through move-

Custom home construction in Sunnyvale costs $350 to $800 per square foot including design, engineering, permits, and construction (Hamilton Exteriors 2024-2026 project data). A 2,500 sq ft home typically costs $900,000 to $2,000,000. Lot preparation, grading, and utility connections add $50,000 to $200,000 depending on site conditions. We provide detailed, itemized estimates at every stage.

Custom home construction in Sunnyvale takes 12 to 18 months from permit approval. The design and permitting phase adds 4 to 8 months depending on architectural complexity and Sunnyvale's plan review timeline. Total timeline from initial consultation to move-in is typically 18 to 24 months.

California law requires a licensed architect or engineer to design residential structures over two stories or exceeding certain size thresholds. Even for single-story homes, detailed architectural plans with structural engineering are required for building permits. Hamilton Exteriors' founder Alex Hamilton Li is a licensed architect and general contractor, so design and construction are handled in-house under one contract.

You need a building permit from the Sunnyvale Building Division. Permit fees for custom homes range from $30,000 to $80,000, including plan check, school impact fees, and utility connection charges. We handle the entire permit process.