Hayes Valley · San Francisco
Home Addition in Hayes Valley
Refresh & Build is a licensed San Francisco contractor specializing in home addition projects in Hayes Valley. Hayes Valley's Victorian homes and new developments sit at the heart of San Francisco.
Home Addition in Hayes Valley
Hayes Valley's Victorian homes and new developments sit at the heart of San Francisco. Refresh & Build has worked throughout Hayes Valley, blending modern design sensibilities with respect for the neighborhood's historic residential character.
Neighborhood Housing Stock
Victorian single-family homes and flats, plus newer condo construction along the main corridors
Permit Notes for Hayes Valley
Standard SF DBI permit process. Some historic Victorians may require additional review for exterior changes.
What's Included
- Room additions and bump-out additions
- Second-story and vertical additions
- ADU (Accessory Dwelling Unit) construction
- Garage-to-living-space conversions
- Foundation work and structural engineering
- Full architectural and design coordination
- SF DBI and Planning permit management
Typical Cost Range
$150,000–$500,000+
Free itemized quotes — no obligation
Home Addition in Hayes Valley — FAQ
How much does a home addition cost in Hayes Valley?
Home Addition costs in Hayes Valley typically fall within our San Francisco range of $150,000–$500,000+. Victorian single-family homes and flats, plus newer condo construction along the main corridors can influence project complexity and cost. We provide free, detailed estimates after a site visit.
Do I need a permit for a home addition in Hayes Valley?
Yes — SF DBI permits are required for most home addition work in Hayes Valley. Standard SF DBI permit process. Some historic Victorians may require additional review for exterior changes. Refresh & Build handles all permit applications and inspections on your behalf.
What is an ADU and how much does one cost in San Francisco?
An ADU (Accessory Dwelling Unit) is a secondary housing unit on your property — it can be a garage conversion, basement unit, or new detached structure. ADUs in San Francisco cost $80,000–$200,000 and can generate significant rental income to offset your mortgage.
How long does a home addition take in San Francisco?
Home additions typically take 4–9 months from start to finish. SF Planning and permit approval can take 3–6 months for complex additions. We help expedite the approval process and begin site prep work in parallel.
Home Addition in Nearby Neighborhoods
Other Services in Hayes Valley
Ready for Your Home Addition in Hayes Valley?
Get a free, no-obligation consultation. We'll visit your Hayes Valley home, assess the project, and provide a detailed quote.