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Roofing Contractor in Castro Valley, CA | Hamilton Exteriors

Castro Valley roofing contractor offering roof replacement, repair, and installation. Architect-led, GAF Master Elite, CSLB #1078806. Free on-site estimate.

Window Replacement in Castro Valley, CA | Hamilton Exteriors

Castro Valley window replacement contractor. Architect-led design-build. Milgard, Andersen, Marvin. Free on-site estimate. CSLB #1078806.

cost-guide

Roof Replacement Cost in the Bay Area (2026 Guide)

Roof replacement cost in Oakland and the Bay Area: $17,000-$28,000 for asphalt, $30,000-$55,000 for metal or tile. 2026 per-city pricing from a GAF Master Elite contractor.

cost-guide

How Much Does It Cost to Build an ADU in the Bay Area? (2026 Guide)

How much does an ADU cost in San Jose and the Bay Area? $80,000-$500,000 depending on type, size, and city. 2026 per-city pricing for San Jose, Oakland, SF, Concord and more.