Deck Builder in Oakland, CA | Hamilton Exteriors
Oakland deck builder offering custom deck construction, repair, and replacement. Architect-led design-build. CSLB #1078806. Free on-site estimate.
Hamilton Admin
Deck Building & Remodeling in Castro Valley, CA | Hamilton Exteriors
Castro Valley deck builder. Architect-led design-build for custom decks, patios, and outdoor living. Free on-site estimate. CSLB #1078806.
Home Remodeling in Castro Valley, CA | Hamilton Exteriors
Castro Valley contractor for roofing, siding, windows, ADUs, and additions. Architect-led design-build. CSLB #1078806. Free on-site estimate.
ADU Builder in Castro Valley, CA | Hamilton Exteriors
Castro Valley ADU builder offering architect-led design, permits, and construction. Detached ADUs, garage conversions, and JADUs. CSLB #1078806.
Home Additions in Castro Valley, CA | Hamilton Exteriors
Castro Valley home addition contractor. Architect-led design-build for second stories, room extensions, and ADUs. Licensed, bonded, and insured. CSLB #1078806.
Custom Home Builder in Castro Valley, CA | Hamilton Exteriors
Castro Valley custom home builder — architect-led design-build by Alex Hamilton Li, CSLB #1078806. Ground-up construction on hillside and flat lots. Free quote.
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.
Siding Contractor in Castro Valley, CA | Hamilton Exteriors
Castro Valley siding contractor. Architect-led design-build. James Hardie fiber cement, vinyl, stucco. Free on-site estimate. CSLB #1078806.
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
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.
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.