Custom Home Builder in Concord

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 Concord are tradesmen-only — skilled at construction but not trained in design. An architect-led builder brings both disciplines together from day one. Every design decision is made with construction feasibility and cost in mind. Every material choice is priced during design, not after. The difference shows in the final product. Homes designed and built under one contract typically cost 10 to 15 percent less than the traditional architect-then-bid approach, according

To estimate a Concord custom home, define the home size, layout, finishes, and site requirements first. Ask for separate costs for design, engineering, permits, construction, grading, and utility connections. Check which costs remain allowances and which are excluded. A project-specific estimate is needed before setting a construction budget.

Custom home construction in Concord takes 12 to 18 months from permit approval. The design and permitting phase adds 4 to 8 months depending on architectural complexity and City of Concord plan review timelines. 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 custom 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.

Yes, but hillside construction requires specialized engineering for foundations, retaining walls, drainage, and seismic bracing. Concord hillside lots often require geotechnical reports, soil testing, and engineered pier-and-grade-beam foundations. Many hillside lots also fall within Wildland-Urban Interface fire zones, requiring Chapter 7A compliant exterior materials.