Second story additions 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.

Second story additions in Concord typically run $250 to $400 per square foot, so an 800 to 1,500 sq ft addition costs $200,000 to $480,000 fully built. Concord is among the most affordable Bay Area cities for second story work because of flat lot conditions, fast permit turnaround, and lower city fees. Every Hamilton Exteriors estimate is itemized so you see exactly where each dollar goes.

Most second story addition permits in Concord clear plan check in 8 to 12 weeks, faster than most Bay Area cities. The Concord Building Division uses the Accela online portal for submittals, and plan reviewers are responsive to revisions. Active construction is typically 14 to 20 weeks once permits issue.

Most pre-1980 Concord homes need foundation bolting and cripple wall bracing before a second story is added. The flat lots common in Concord make this work straightforward, with no hillside excavation needed. Our structural engineer performs a foundation assessment during feasibility and prices any required upgrades into the upfront estimate.

For most Concord second story additions, you can stay in the home for the first 10 to 14 weeks of construction while we frame the addition above the existing roof under temporary weather protection. A 3 to 5 week window when we cut into the existing ceiling for stairs and HVAC tie-ins usually requires temporary relocation.

We build second story additions across all of Concord, including Crystyl Ranch, Dana Estates, Holbrook Heights, Sun Terrace, Ygnacio Valley, Clayton Valley, and the Todos Santos downtown area. We have completed projects in every Concord zoning district.