The Investment

Prefab ADU Pricing in California (2026)

A Framework First ADU costs $199,000 to $599,000, all-inclusive. That's the complete project, not a base price with surprises stacked on later. The Four Fifty studio starts at $199,000; the Twelve Hundred U, our 1,200 square-foot flagship, tops the range at $599,000.

Across all 14 models, the price is all-inclusive: a permitting budget, plans, foundation, appliances, crane delivery, and finish work are already built into the number. Once you sign, that scope is locked into your contract, with actual permit costs and any property-specific site work confirmed through your feasibility study. Delivery runs 4 to 9 months depending on the model. Every price on this page comes from our current pricing catalog, the same one we hand you on a factory tour.

14

models, one ledger

$199K

starting all-in*

405–1,200

square feet

4–9

months to keys*

*Starting price covers a permitting budget, not final permit costs, and reflects our fastest model's timeline. Your feasibility study confirms both for your property.

All 14 Models

See every model and every price, side by side.

All-inclusive* project pricing, from our 3rd Edition catalog (February 2026). Monthly payment is an interest-only estimate at a current average home equity line of credit rate, $0 down, since most ADU buyers finance against equity in their existing home. Tap any model for floor plans and photos.

Pricing Ledger14 Models · All-Inclusive*

Four Fifty BEST VALUE Studio / 1 · 450 ft² · 4 months $199,000 all-in $1,200/mo est., $0 down* The 405 NEW 1 / 1 · 405 ft² · 5 months $239,000 all-in $1,450/mo est., $0 down* Five Five Five 1 / 1 · 555 ft² · 5 months $279,000 all-in $1,700/mo est., $0 down* Six Sixty MOST POPULAR 1 / 1 · 660 ft² · 5 months $309,000 all-in $1,900/mo est., $0 down* Six Sixty Duo BEST FOR RENTALS 2 / 1 · 660 ft² · 5 months $339,000 all-in $2,050/mo est., $0 down* Seven Forty-Nine NEW · L-SHAPED 2 / 1 · 749 ft² · 5–6 months $369,000 all-in $2,250/mo est., $0 down* Eight Eighty-Five Duo 2 / 1 · 885 ft² · 6 months $399,000 all-in $2,450/mo est., $0 down* Eight Eighty-Five Duo Plus 2 / 2 · 885 ft² · 6 months $429,000 all-in $2,600/mo est., $0 down* Nine Forty-Five Duo 2 / 1 · 945 ft² · 6 months $419,000 all-in $2,550/mo est., $0 down* Nine Forty-Five Duo Plus 2 / 2 · 945 ft² · 6 months $449,000 all-in $2,750/mo est., $0 down* Nine Forty-Five Trio 3 / 1 · 945 ft² · 6 months $445,000 all-in $2,700/mo est., $0 down* Nine Forty-Five Trio Plus FAMILY-SIZE 3 / 2 · 945 ft² · 6 months $479,000 all-in $2,900/mo est., $0 down* Twelve Hundred 3 / 2 · 1,200 ft² · 7–9 months $549,000 all-in $3,350/mo est., $0 down* Twelve Hundred U NEW · LARGEST 3 / 2 · 1,200 ft² · 7–9 months $599,000 all-in $3,650/mo est., $0 down*

*Interest-only estimate, $0 down, at a current average home equity line of credit rate. Not a loan offer or financial advice; your rate, down payment, and terms will differ: run your own numbers in the calculator, or read how families actually pay for an ADU.

*Includes a permitting budget, not final permit costs. Permits and property-specific site work (septic, retaining walls, etc.) vary by property and are confirmed in your feasibility study.

One Honest Number

What "all-inclusive" actually means.

A lot of builders quote you the box and let you discover the rest later: the foundation, the crane, the permit fees, the appliances. Our price is the whole project. Here's everything inside the number, on every model:

01 Permitting Budget & Paperwork
  • A permitting budget is built into every price before you sign
  • We prepare and submit every form your city requires
  • We manage plan check and respond to city corrections on your behalf
02 Plans: Site Plan & Title 24
  • A professional site plan showing your home’s exact placement on your lot
  • The Title 24 energy compliance report California requires on every new home
  • Structural and engineering documents prepared for you
03 Project Management
  • One point of contact from contract to move-in
  • Coordination between the factory build and your on-site work
  • Regular check-ins so you always know what’s next
04 The Unit & All Finish Work
  • Flooring, paint, trim, and fixtures, finished before delivery
  • Every wall, ceiling, and surface complete, not left as a punch list
  • Built to the same standard as the model you toured in our factory
05 Foundation Work
  • An engineered foundation designed for your specific soil and site
  • Excavation, forming, and pour handled by our crews
  • Built in parallel with your home’s factory build, so nothing waits on the other
06 Appliances & Custom Cabinets
  • Dishwasher, refrigerator, range, and microwave included
  • Garbage disposal included
  • Custom cabinetry built into the unit at the factory, ready on day one
07 Crane Delivery & Truck Transportation
  • Your finished home is trucked from our Salinas factory to your property
  • A crane lifts and sets it directly onto your foundation
  • Delivery day is typically a single day, start to finish
08 Entrance, Deck & Installation
  • A composite deck comes installed at the entrance, ready to walk out onto
  • Final leveling and hookups on your foundation
  • Entry steps and railing where your model calls for them
09 Status Updates via Text & Email
  • Updates as your project moves through each stage
  • Photos from the factory floor as your home comes together
  • A clear heads-up before delivery day so you can be there for it

We build in our own Salinas factory with our own family doing the work, and that completeness shows up in your number: a permitting budget, foundation, delivery, and finish work are priced in from the start, not billed back to you later as a base unit price.

*Includes a permitting budget, not final permit costs. Permits and property-specific site work (septic, retaining walls, etc.) vary by property and are confirmed in your feasibility study.

Discount Programs

For the people who show up for everyone else.

We offer dedicated discount programs for three groups:

First Responders Military & Veterans Fire Victims

If one of these is you or your family, ask about our discount programs on your free property analysis call. We'll apply whatever fits your situation before we ever quote you a contract price.

Pricing FAQ

The money questions, answered straight.

Can I finance my ADU, or do I need cash on hand?
Most of our clients don't pay cash. The most common path is a HELOC against the equity in the existing home; construction-to-permanent loans and cash-out refis work too. We also partner with two California ADU lenders, Mason Mac and SearchLight Lending, who count projected rental income toward qualification. We don't lend directly, but we'll make the introduction. See our financing guide for the four real paths and the monthly payment math.

What's NOT included in the all-inclusive price?
Site-specific work beyond standard scope, things like a septic upgrade, a retaining wall, or an electrical panel that needs more capacity. We offer that work in-house so your project stays with one builder, but it's priced per property, not baked into the catalog number. Permits work the same way: we build a permitting budget into every price, but actual permit costs are set by your city or county, so they're confirmed in your feasibility study before you sign anything. Everything else on the included list, plans, foundation, appliances, delivery, installation, is already in the catalog price.

Will these prices change?
These are the prices from our 3rd Edition pricing catalog (February 2026). We review them as material and labor costs move, so a catalog price isn't a forever price, but once you sign your build contract, your price is locked, and it holds for 90 days while you finalize financing. We don't reprice mid-project, and we don't add change orders for anything on the included list, aside from actual permit costs and any property-specific site work, both of which your feasibility study confirms before you sign.

How does the deposit and payment schedule work?
A $1,000 signup deposit starts the process, and it is refundable if your financing falls through. The balance is paid in milestones as your home moves through construction, delivery, and final inspection, never all up front. We walk through the full payment schedule line by line before you sign anything.

Does the feasibility study fee count toward my build?
Yes. 100% of the feasibility study fee ($497 standard, $997 for an empty lot) is credited toward your build contract if you sign within 90 days. So if you build with us, the study costs you nothing. The fee is refunded only if we find your property cannot host an ADU; otherwise it credits toward your build.

Want the deeper context? Browse all 14 models, read the full California ADU cost guide, or see how families finance the build.

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Your Next Step

Get your property's real number.

The catalog price is the starting point. Tell us about your property below and we'll follow up to scope a feasibility study, seven to fourteen business days depending on your property, fully credited toward your build if it happens.

  • 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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