The Places · Santa Clara County

ADU builder in Campbell.

A backyard home in Campbell can keep multiple generations under one address while respecting the look of the street. Let's confirm your options. $199K–$599K all-inclusive, with a permitting budget built in. Most homes are delivered in 4 to 9 months once permits clear.

Campbell 55 min from factory Santa Clara Co. · 55 min from factory

55 min from our Salinas factory

Campbell sits well inside our delivery range.

Campbell ADU Rules

What applies on your lot.

1,200

ft² max · detached ADU

4 ft

min. side / rear setback

60-day

ministerial permit clock

parking space max, often waived

Campbell follows the California statewide ADU baseline; local rules can't go below it.

Full rulebook with citations →

Why Us for Campbell

We're local. Actually.

Our family-run team is based right here. Our factory sits in Salinas, 55 minutes from Campbell, and we have built across this region for years. When we say "local," we don't mean a sales rep who covers your area from somewhere else. We mean the people who design, build, and deliver your home are your neighbors.

That matters more than you'd think. When a planning department needs a clarification, we go in person. When an inspector flags something, we are there the same day. No phone tag, no road trips, no "we'll get back to you next week."

minutes from our factory

models

4–9

months to keys

4.9^/5

stars on Google

Popular in Campbell

These three models fit most Campbell lots.

BEST VALUE Four Fifty 450 ft² · Studio · 4 months $199,000 → MOST POPULAR Six Sixty 660 ft² · 1BR · 5 months $309,000 → BEST FOR RENTALS Six Sixty Duo 660 ft² · 2BR · 5 months $339,000 →

See all 14 models →

From Our Families

Real families, real reviews.

“Everything we would have picked out was already in there.”

Richard & Maria · San Jose · 660 ft² · 1 Bed · Living closer to family

“Framework First is an incredible PreFab home. It really is a home! I did a lot of research on a number of PreFab options; some others felt like small, short-term guest houses you wouldn't want to live in. Our ADU has a walk-in closet, high ceilings, a full kitchen with a peninsula, a built-in bookcase, large windows, and a sliding glass door, with beautiful lighting both inside and out. All of this was included in the price, and we were never asked to pay anything more. Everyone at Framework First was absolutely great to work with. We absolutely LOVE our ADU!”

Rich Stephens · Los Gatos · 660 ft² · 1 Bed

These are excerpts from real, verified Google reviews. Read more →

Campbell ADU FAQ

Questions about building in Campbell.

Campbell follows California state ADU law. For the full rulebook with citations, see our ADU Rules Lookup, the Santa Clara County ADU regulations guide, or the statewide California ADU laws 2026 overview.

How big can an ADU be in Campbell?

Campbell follows California state ADU law. Detached ADUs are allowed up to 1,200 sq ft under state law. Cities may cap size lower, but never below 850 sq ft (studio or 1 bedroom) or 1,000 sq ft (2+ bedrooms). Smaller lots may also qualify for a Junior ADU (JADU) up to 500 square feet. Our 14 models range from 405 to 1,200 square feet, and your free property analysis confirms exactly which sizes your lot allows.

What are the setback requirements in Campbell?

4 ft from side and rear property lines for new construction (0 ft for a conversion within an existing structure). Front setback follows the main home's zoning. We confirm the exact setbacks for your specific lot during the free site visit (step 3 of our process).

Do I need to add a parking space?

At most 1 space per ADU, with broad exemptions: within a half mile walking distance of public transit, when replacing a garage, and for conversions. Most lots qualify for an exemption. We verify your lot's parking situation as part of the feasibility study.

How much are Campbell ADU permit fees?

Permit and impact fees vary by city, ADU size, and utility connections. Your project price carries a permitting budget built in, and we handle every submission for you. Exact fees are set by your city and county and are itemized in your feasibility study.

How far is your factory from Campbell?

Our factory is in Salinas, about 55 minutes from Campbell. Campbell is well within our service area and we're ready to build for you.

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Your Campbell Property

Let's see if your property in Campbell is ADU-ready.

Our team will pull your property records, check setbacks, and tell you straight in about 30 minutes, free.

A shortlist of which models actually fit your lot
Honest flags on anything property-specific, like slope or septic
A clear next step, whether that is a factory tour or a feasibility study
No pressure, and no obligation

Once you submit, a real person on our team reviews your property and follows up within 1 to 2 business days to book your free 30-minute call. No call center, no drip campaign, just a conversation.

After we review your property, we'll invite you out to the factory, or send a member of our team to you, whichever fits your schedule better.

Building more than one? If you're a real estate developer or investor planning multiple units, let us know in the form. We offer better pricing at volume.

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