Typical ADUs Prices in San Francisco — Full Range Breakdown

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Pricing for adu in San Francisco starts near $1,418 and can reach $4,396 per job; a representative job sits around $2,497.

The California market sets a baseline, but San Francisco neighbourhoods vary. Access, parking and the age of the building can each add to a adu bill.

Typical cost at a glance

United States planning figures, per job
LevelPrice
Low~$1,418
Typical~$2,497
High~$4,396

Cost by type

TypeLowTypicalHigh
Baseline transaction cost~$1,418~$2,907~$4,396
Below-median price scenario~$1,163~$2,626~$4,088
Above-median price scenario~$1,588~$3,827~$6,066
Lender and government fees~$170~$679~$1,187
Competitive or fast-moving market~$1,730~$4,206~$6,682

All figures per job.

What ADUs typically costs

In San Francisco, the going range for adu runs from about $1,418 to $4,396 per job, centred near $2,497. Use the low end as your best case and the high end as your safety margin.

Timing your adu

Plan adu around demand, not just around your own calendar. Whoever has capacity when you call has more reason to price competitively.

Budgeting for adu

Start your adu budget at $2,497 per job and adjust once you have written quotes. Planning around the midpoint, not the minimum, avoids unpleasant surprises.

What moves the price of adu

adu is priced job by job rather than off a fixed menu. That is why the same request can attract quotes near $1,418 and others near $4,396: the providers are pricing different assumptions about scope and risk.

How to compare quotes for adu

Compare adu quotes on four things: scope, materials, timeline and what triggers an increase. Get all four in writing and the decision becomes straightforward.

Frequently asked questions

How much does adu cost?
Most adu falls between $1,418 and $4,396, with a typical figure near $2,497 per job. The low end is a straightforward job with no surprises; the high end covers complex scope, premium materials or urgent timing. In San Francisco, that is worth confirming with a local provider before you commit.
What affects the price of adu?
No single factor decides it — scope, materials, access and timing all move the total, and the biggest swings usually come from access and scheduling. The answer can shift with the San Francisco market, so check locally.
Is ADUs cheaper in smaller cities?
Often, but not always. Smaller markets can carry a travel or availability premium that offsets a lower local rate, so it is worth checking a nearby city before assuming the lowest published figure applies to you. It is worth testing that against a couple of quotes in San Francisco.
How many quotes should I get for adu?
Two or three written quotes are enough to see the real market range. Compare the same scope side by side, and ask each provider what is excluded and what would change the price after the quote is accepted. Local providers in San Francisco can confirm how that applies to your area.

Keep comparing

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Cities in this region

These are planning ranges drawn from public price data and market research. They are not a quote, an offer or financial advice, and your actual price depends on the provider, the location and the scope of the work.