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Additions

30 articles about additions

Written by licensed contractors · CSLB #1078806 · 500+ projects completed
Hamilton
Cost GuideAdditions

Second Story Addition Cost Walnut Creek | Hamilton Exteriors

Second story addition cost in Walnut Creek, CA ranges from $200 to $400 per square foot. Architect-led pricing, permit fees, and 2026 cost factors.

·14 min
Hamilton
Cost GuideAdditions

Second Story Addition Cost in San Ramon | Hamilton Exteriors

San Ramon second story addition costs range from $200 to $400 per square foot in 2026. Get a detailed breakdown of pricing, permits, and fire zone

·9 min
Hamilton
Cost GuideAdditions

Second Story Addition Cost in Sunnyvale | Hamilton Exteriors

Sunnyvale second story addition costs range from $200-$500 per sq ft in 2026. Architect-led pricing, permit guidance, and city-specific factors. CSLB #1078806.

·11 min
Hamilton
Cost GuideAdditions

Second Story Addition Cost in Saratoga CA | Hamilton Exteriors

Second story addition costs in Saratoga, CA range from $350 to $650 per square foot. 2026 pricing guide with permit fees, fire zone rules, and seismic

·13 min
Hamilton
Cost GuideAdditions

Santa Clara Home Addition Cost 2026 | Hamilton Exteriors

Santa Clara home additions cost $200 to $450 per square foot in 2026. Architect-led guide to second story, room extension, and ADU pricing. CSLB #1078806.

·12 min
Hamilton
Cost GuideAdditions

Second Story Addition Cost San Jose | Hamilton Exteriors

Second story addition costs in San Jose range from $250,000 to $600,000. Get a detailed breakdown of pricing, permits, and planning. CSLB #1078806.

·14 min
Hamilton
Cost GuideAdditions

Second Story Addition Cost in Palo Alto | Hamilton Exteriors

Second story addition cost in Palo Alto ranges from $250K to $600K. Architect-led design-build with transparent pricing. CSLB #1078806. Free on-site estimate.

·11 min
Hamilton
Cost GuideAdditions

Second Story Addition Cost in Mountain View | Hamilton Exteriors

Mountain View second story addition costs range from $300 to $450 per square foot. Architect-led pricing, permit guidance, and local code details.

·13 min
Hamilton
Cost GuideAdditions

Second Story Addition Cost Milpitas | Hamilton Exteriors

Second story addition costs in Milpitas range from $200 to $400 per square foot. Get a detailed breakdown of pricing, permits, and Santa Clara County

·11 min
Hamilton
Cost GuideAdditions

Second Story Addition Cost in Los Gatos | Hamilton Exteriors

Los Gatos second story additions cost $200 to $500 per sq ft in 2026. Get architect-led pricing, permit guidance, and WUI fire zone requirements for your home.

·11 min
Hamilton
Cost GuideAdditions

Cupertino Home Addition Cost (2026 Guide) | Hamilton Exteriors

Cupertino home additions cost $300 to $550 per square foot in 2026. Architect-led guide with permit details, fire zone rules, and real pricing. CSLB #1078806.

·12 min
Hamilton
Cost GuideAdditions

Home Addition Cost in Campbell CA | Hamilton Exteriors

Campbell home additions cost $200 to $500 per square foot. Get a detailed 2026 price breakdown for second-story additions, room extensions, and ADUs.

·12 min

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