Bay Area Residential Design & Construction Costs
Examples Based on Recent Projects in San Francisco, CA
How much does a home remodel cost in San Francisco?
Construction costs in San Francisco vary widely depending on the scope of work, existing conditions, structural requirements, excavation, permitting, and finish level.
For that reason, we typically look at a project by scope first, using comparable recent projects to establish an early ballpark. Cost per square foot can be a helpful secondary check, but it is not always a reliable way to predict the cost of a renovation.
A relatively small project involving kitchens, bathrooms, structural work, stairs, or excavation can have a high cost per square foot, while a larger whole-home project may have a lower average cost per square foot if portions of the existing home receive limited work.
Construction
Construction costs vary based on project size, scope, complexity, and existing conditions. Structural work, excavation, foundation work, additions, utility upgrades, difficult site access, and exterior changes can all materially affect cost.
Below are general ranges based on recent SFDB projects.
Full Kitchen Remodel
Approximately $150,000–$200,000+
A substantial kitchen remodel may include new cabinetry, countertops, flooring, electrical and plumbing work, lighting, drywall and painting, and minor structural changes.
Projects involving significant wall removal, specialty windows or doors, extensive custom cabinetry, adjacent-space remodeling, or high-end stone can exceed this range.
Full Bathroom Remodel
Approximately $80,000–$100,000+
Cost depends on layout changes, plumbing relocation, tile and stone, cabinetry, fixtures, windows, waterproofing, and finish level.
Basement or Garage Remodel / New Lower-Level Living Space
Approximately $400,000–$650,000+
This may include a new bedroom or primary suite, bathroom, laundry, living space, or ADU.
Projects involving excavation, underpinning, new foundations or slabs, new stairs, major utility upgrades, or significant structural work can exceed this range.
Attic Remodel / Vertical Addition / New Floor
Approximately $700,000–$1M+
These projects often include structural framing, a new roof, stairs, new bathrooms or bedrooms, exterior changes, windows and doors, and substantial mechanical/electrical work.
More extensive vertical additions or projects involving significant upgrades to the existing home may exceed $1M.
Whole-Home Remodel
Approximately $850,000–$1.5M+
A comprehensive whole-home remodel may include a new kitchen, multiple bathrooms, layout changes, structural work, new windows and doors, flooring, electrical and HVAC upgrades, and exterior work.
Larger homes, major additions, excavation, extensive structural work, or high-end finish packages can bring projects into the $1.5M–$2M+ range.
Whole-Home Remodel + Addition
Approximately $1M–$2M+
Projects that combine a substantial renovation of the existing home with a horizontal or vertical addition typically involve significant structural, architectural, mechanical, and exterior work.
The overall cost depends heavily on the size and complexity of the addition, the amount of existing space being remodeled, foundation conditions, and finish level.
Cost Per Square Foot
Cost per square foot can be useful as a secondary planning tool, but we do not recommend using it as the primary way to estimate a San Francisco renovation.
Renovation costs vary significantly depending on how much work is concentrated within each area of the home. Kitchens, bathrooms, stairs, structural work, excavation, and additions are much more expensive per square foot than areas receiving simpler finish upgrades.
When enough project information is available, we prefer to develop an early ballpark based on scope and comparable projects, and then use square-foot costs as a reasonableness check.
Design
Design fees vary based on project size, permitting complexity, and the level of architectural and interior design support required.
For most projects, design fees typically range from approximately 10–18% of construction costs. Smaller or design-intensive projects may represent a higher percentage, while larger projects often represent a lower percentage of the overall construction cost.
For projects requiring extensive finish, fixture, cabinetry, lighting, tile, and material selections, we typically recommend incorporating full interior design into the overall design scope. This provides a more comprehensive level of service and allows the architectural and interior design to be developed together.
Once we understand your project scope and the level of design support required, we provide a design proposal based on the anticipated work rather than relying solely on a percentage formula.
What is not included in these examples?
Every project is different. Early cost ranges may not include items that cannot yet be reasonably established, such as:
Major excavation or unknown foundation conditions
Unforeseen structural work
Engineering and specialty consultant fees
Permit and city fees
Owner-requested scope changes
Certain owner-supplied fixtures, appliances, cabinetry, or specialty finishes
As a project becomes more defined, we refine the construction pricing alongside the design.
Why we provide early ballpark pricing
Early in the process, our goal is to make sure the proposed scope and budget are generally aligned.
Because SFDB provides both design and construction, we can consider construction cost while the project is still being designed rather than waiting until the plans are complete.
This allows homeowners to make informed decisions about scope, priorities, and budget from the beginning.
Questions about your project?
If you're considering a remodel or addition in San Francisco, tell us about your home, your goals, and your approximate budget.
We'll review the project and help you understand what a realistic scope, schedule, and construction range may look like.