Looking for a modular home builder in San Francisco, CA? Describe your project once and up to three modular home builders who work in San Francisco and San Francisco County get back to you with a quote. It's free and there is no obligation.
San Francisco is home to about 827,526 people (2024 Census Bureau estimate), a shrinking community (−5.8% since 2020). With 17,726 people per sq mi, it is a densely built-up area. Rural lots and replacements of older homes here are good fits for modular construction.
San Francisco at a glance
- Population (Census Bureau estimate, 2024)
- 827,526 (−5.8% since 2020)
- Rank in California
- 4th of 482 cities and towns
- Land area
- 47 sq mi
- Population density
- 17,726 people per sq mi (densely built-up)
- Type
- City (San Francisco city)
- Main county
- San Francisco County
What to check before hiring in San Francisco
- Code: in California, modular homes are built to the state or local building code.
- Site work: foundation, utilities, crane access and finishes must be in the quote.
- Access: delivery trucks and cranes need road and lot access.
- Price drivers: size, finishes, transport distance and site work.
Useful official resources
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Modular Home Builders Association
Official information and guidance.
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ICC: International Code Council
Official information and guidance.
Services available in San Francisco
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Modular home
Factory-built modular home delivered and set on a site-built foundation, with finish work.
Frequently asked questions in San Francisco
How much does a modular home cost in San Francisco, CA?
It depends on size, finishes, transport and site work. Describe your project: builders who serve San Francisco reply with a quote.
How long does it take?
Often a few months from order to move-in.
Can I customize the design?
Most modular builders offer customizable plans.
Which modular home builders will contact me?
Up to three independent modular home builders who serve San Francisco and the surrounding area, chosen for the service you need. Your details are shared only with your consent.
Source: U.S. Census Bureau, Population Estimates Program (Vintage 2024) and Gazetteer Files (public domain), imported on 10/31/2026. Figures describe the incorporated place or county as published; they are shown for information only.