Chapter 04 · The Investment

Prefab ADU Pricing in California (2026)

A Framework First ADU costs $180,000 to $557,000, all-inclusive. That's the complete project, not a base price with surprises stacked on later. The Four Fifty studio starts at $180,000; the Twelve Hundred U, our 1,200 square-foot flagship, tops the range at $557,000.

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

$180K

starting all-in*

405–1,200

square feet

4–9

months to keys*

*Starting price includes a permitting budget, not final permit costs, and the fastest timeline is for the smallest model. Both are confirmed in your feasibility study.

All 14 Models

Every model. Every price. Side by side.

All-inclusive* project pricing, from our 3rd Edition catalog (February 2026). Monthly payment is principal and interest only: 20% down, 30-year fixed at 7.5% APR. Tap any model for floor plans and photos.

Pricing Ledger14 Models · All-Inclusive*

Four Fifty BEST VALUE Studio / 1 · 450 ft² · 4 months $180,000 all-in $1,007/mo est.* The 405 NEW 1 / 1 · 405 ft² · 5 months $237,000 all-in $1,326/mo est.* Five Five Five 1 / 1 · 555 ft² · 5 months $267,000 all-in $1,494/mo est.* Six Sixty MOST POPULAR 1 / 1 · 660 ft² · 5 months $287,000 all-in $1,605/mo est.* Six Sixty 2BR BEST FOR RENTALS 2 / 1 · 660 ft² · 5 months $309,000 all-in $1,728/mo est.* Seven Forty-Nine NEW · L-SHAPED 2 / 1 · 749 ft² · 5–6 months $347,000 all-in $1,941/mo est.* Eight Eighty-Five 2BR 2 / 1 · 885 ft² · 6 months $377,000 all-in $2,109/mo est.* Eight Eighty-Five 2/2 2 / 2 · 885 ft² · 6 months $402,000 all-in $2,249/mo est.* Nine Forty-Five 2/1 2 / 1 · 945 ft² · 6 months $387,000 all-in $2,165/mo est.* Nine Forty-Five 2/2 2 / 2 · 945 ft² · 6 months $412,000 all-in $2,305/mo est.* Nine Forty-Five 3/1 3 / 1 · 945 ft² · 6 months $399,000 all-in $2,232/mo est.* Nine Forty-Five 3/2 FAMILY-SIZE 3 / 2 · 945 ft² · 6 months $434,000 all-in $2,428/mo est.* Twelve Hundred 3 / 2 · 1,200 ft² · 7–9 months $507,000 all-in $2,836/mo est.* Twelve Hundred U NEW · LARGEST 3 / 2 · 1,200 ft² · 7–9 months $557,000 all-in $3,116/mo est.*

*Principal & interest only, assuming 20% down and a 30-year fixed loan at 7.5% APR. Your rate, down payment, and property taxes 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
02
Plans: Site Plan & Title 24
03
Project Management
04
The Unit & All Finish Work
05
Foundation Work
06
Appliances & Custom Cabinets
07
Crane Delivery & Truck Transportation
08
Entrance, Deck & Installation
09
Status Updates via Text & Email

Every project price includes a permitting budget along with plans, foundation, the factory build, crane delivery, utility hookups, appliances, and final inspection. Permit costs are set by each city and county, so they are property-specific and confirmed in your feasibility study. Property-specific site work such as septic upgrades or retaining walls is not included in listed model pricing, though we offer it in-house as part of your contract so the whole project stays with one builder.

The All-Inclusive Truth

The all-in number is the only number.

The number that matters is the one you actually pay at the end. We publish the complete project price up front, with actual permit costs and any property-specific site work confirmed in your feasibility study before you sign, so nothing standard gets added later. Here is everything that price already covers:

Project LedgerFramework First · All-Inclusive

01
Permitting Budget & Paperwork
02
Plans: Site Plan & Title 24
03
Project Management
04
The Unit & All Finish Work
05
Foundation Work
06
Appliances & Custom Cabinets
07
Crane Delivery & Truck Transportation
08
Entrance, Deck & Installation
09
Status Updates via Text & Email

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.

Your Next Step

Get your property's real number.

The catalog price is the starting point. The feasibility study tells you exactly what your lot, your utilities, and your city add up to. Five business days, fully credited toward your build.

Start My Feasibility Study → Run My Numbers in the Calculator