Best ADU For · 2026
Best Two-Bedroom ADU: Which Model Wins
If you are comparing two-bedroom ADUs, the Six Sixty 2BR wins for most buyers. At 660 sq ft with two real bedrooms and one bath, it is Framework First’s most affordable two-bedroom floor plan at $309,000 all-inclusive, and it delivers the strongest rent-to-cost ratio of any model in our 14-model lineup. Five other two-bedroom configurations exist for buyers whose priorities are different, from a private courtyard layout to a two-full-bath plan built for adults who need their own bathroom. This guide walks through all six so you can see which one actually fits your lot and your plan for the space.
The short version: The Six Sixty 2BR ($309,000, 660 sq ft) is the best two-bedroom ADU for most buyers because it packs two full bedrooms into the lowest entry price in the lineup. If two unrelated adults will share the unit, the Eight Eighty-Five 2/2 ($402,000, two full baths) is the better call. For two-household privacy, the Seven Forty-Nine’s L-shaped, courtyard-facing layout is worth the step up.
Why a two-bedroom ADU needs a different kind of comparison
A one-bedroom ADU is a fairly simple decision: pick the size that fits your budget and your lot. A two-bedroom ADU is not that simple, because “two bedrooms” covers a wide range of real-world uses. The same second bedroom might house a tenant who splits rent with a roommate, a set of aging parents who want their own space, an adult child moving back home, or a long-term renter who needs a proper home office. Each of those uses puts different pressure on the floor plan.
That range shows up in the numbers. Framework First’s two-bedroom models span 660 to 945 sq ft and $309,000 to $412,000, and the biggest, most expensive model is not automatically the best answer. A single tenant does not need 945 sq ft any more than two roommates who each want a private bathroom need to share one.
The real question is not “which two-bedroom ADU is biggest,” it is “which two-bedroom ADU matches who is actually living in it.” That is the comparison this guide is built around.
The two-bedroom lineup, compared
| Model | Size | Beds/Baths | All-inclusive price* | Why it fits |
|---|---|---|---|---|
| Six Sixty 2BR | 660 sq ft | 2 bed / 1 bath | $309,000 | Lowest-priced two-bedroom in the lineup, maximum rental income for the cost |
| Seven Forty-Nine | 749 sq ft | 2 bed / 1 bath | $347,000 | L-shaped layout with a private courtyard, built for two-household privacy |
| Eight Eighty-Five 2BR | 885 sq ft | 2 bed / 1 bath | $377,000 | More breathing room for a family that is comfortable sharing one bath |
| Eight Eighty-Five 2/2 | 885 sq ft | 2 bed / 2 bath | $402,000 | Two full baths, the pick for two adults sharing or high-end rentals |
| Nine Forty-Five 2/2 | 945 sq ft | 2 bed / 2 bath | $412,000 | The most space of any two-bedroom model, still with two full baths |
*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.
Five models, five different answers to “who is this for.” The right one depends on whether you are optimizing for cost, privacy, or square footage, which is exactly what the next two sections dig into.
The value winner: Six Sixty 2BR
The Six Sixty 2BR earns the top spot because it does something the rest of the lineup cannot: it gets you a genuine second bedroom without a genuine jump in price. At $309,000, it costs only modestly more than our smaller one-bedroom models, yet it turns a single-occupant unit into a two-occupant one. That is why it carries our official “best for rentals” tag in the model lineup.
For a landlord, that math is the whole story. Two bedrooms in 660 sq ft rent close to what two bedrooms rent for in a much larger unit, because tenants are paying for the bedroom count more than the square footage. For a family putting parents or an adult child in the backyard, the Six Sixty 2BR is enough to give everyone their own room without paying for space nobody uses.
It also delivers fast. At around 5 months from contract to move-in, it is one of the quicker builds in the two-bedroom range, since a smaller footprint clears our Salinas factory floor sooner. You can see the full floor plan and photos on the Six Sixty 2BR model page.
The runner-up: Eight Eighty-Five 2/2, for when one bathroom is not enough
The Six Sixty 2BR’s one weakness is the one bathroom. That is fine for a couple, a small family, or a single tenant. It is not fine for two unrelated adults, two roommates who each want their own routine, or a rental where you are trying to command premium rent. That is where the Eight Eighty-Five 2/2 takes over.
At 885 sq ft and $402,000, it gives each bedroom its own full bathroom, which is the single biggest quality-of-life upgrade you can make to a two-bedroom ADU. It is the model we point to for in-law setups where independence matters, and for landlords targeting the top of the rental market rather than the most affordable unit on the block. Compare it against its single-bath twin, the Eight Eighty-Five 2BR, to see exactly what the second bathroom is worth to your plan, or view the full Eight Eighty-Five 2/2 model page.
Two more models are worth knowing about if neither of these is quite right. The Seven Forty-Nine uses an L-shaped footprint to create a private courtyard, which makes it a strong pick for two households sharing a lot who each want their own outdoor space. And the Nine Forty-Five 2/2 is the largest two-bedroom we build at 945 sq ft, still with two full baths, for buyers who simply want the most room the category offers.
Pricing, financing, and next steps
Every price above includes a permitting budget along with plans, foundation, the factory build, delivery, utility hookups, appliances, and final inspection. Permit costs are set city by city, so your exact figure gets confirmed in the feasibility study. Property-specific site work such as septic upgrades or retaining walls falls outside the listed price, though we handle it in-house as part of your contract so the whole project still runs through one builder.
The one thing a model price cannot tell you is what your specific lot allows. Slope, access, utility distance, and setback rules all vary block by block. Our feasibility study confirms what your property can hold and which two-bedroom model actually fits before you commit to anything.
From there:
- Run your own numbers with the cost calculator.
- See how two-bedroom pricing compares across the full lineup on the pricing page.
- Browse every floor plan, including all six two-bedroom models, on the models page.
Frequently asked questions
What is the best two-bedroom ADU for rental income?
The Six Sixty 2BR. At $309,000 for 660 sq ft, it has the lowest entry price of any two-bedroom model we build, while still commanding two-bedroom rent. That combination gives it the strongest return of any model in the lineup, which is why it carries our official “best for rentals” designation.
What is the cheapest two-bedroom ADU Framework First builds?
The Six Sixty 2BR at $309,000 all-inclusive. It is the only two-bedroom model under $340,000, and it delivers in about 5 months.
Do I need two bathrooms in a two-bedroom ADU?
Only if the two bedrooms will be used independently. A couple or a family that is comfortable sharing one bathroom does fine with the Six Sixty 2BR, Seven Forty-Nine, or Eight Eighty-Five 2BR. Two roommates, two unrelated adults, or a rental aimed at the top of the market do better with a two-bath model like the Eight Eighty-Five 2/2 ($402,000) or Nine Forty-Five 2/2 ($412,000).
Which two-bedroom ADU has the most space?
The Nine Forty-Five 2/2 at 945 sq ft, priced at $412,000 with two full bathrooms. It is the largest two-bedroom floor plan in our current lineup.
How long does a two-bedroom ADU take to build?
Most of our two-bedroom models deliver in about 5 to 6 months from contract to move-in. The Six Sixty 2BR is the fastest at around 5 months, while the larger Eight Eighty-Five and Nine Forty-Five configurations run closer to 6 months. Timelines run in parallel with permitting, since roughly 97% of the home is built in our Salinas factory while your site work is prepared.
Ready to see which two-bedroom model fits your lot? Start your feasibility study →