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Tiny Cottage Builders NW
A finished cedar-clad accessory dwelling unit at golden hour

Tri-Cities, WA · Licensed & insured

More room,
without moving.

Accessory dwelling units, garage conversions and remodels across the Tri-Cities. Start from one of our pre-designed plans, or we’ll draw to your lot. Either way, ADUs are what we build most, and we stay on the job start to finish.

Step 1 of 2

What brings you here today?

Locally ownedADU specialistsBenton & Franklin counties

The catalog

Pre-designed ADU plans

See all plans
Exterior render of the TCB-441-01 ADU plan

Most asked about

TCB-441-01

The 441-01 keeps things simple: a full kitchen along one wall, a living room that runs to a covered porch, and a bedroom set behind its own bath and laundry. Clean lines and an efficient rectangle make it one of the most straightforward plans to site and permit.

Square feet
441
Bedrooms
1
Bathrooms
1
Footprint
21'-0" × 27'-0"
See the TCB-441-01

Process

How a project goes

You’ll see a written scope and a price before anything gets ordered. The rest of it goes like this.

  1. 01

    Feasibility

    We look at your lot, your setbacks, and what your city or county will actually allow before anyone draws anything.

  2. 02

    Meet with the team

    We walk the property together, talk through how you want to use the space, and narrow down a plan.

  3. 03

    Quote

    A written quote covering the plan you chose, the finish package, and the site work your property needs.

  4. 04

    Permit

    We prepare and submit the permit set and manage the back-and-forth with the jurisdiction.

  5. 05

    Construct

    Foundation through final finishes, with regular updates as the work goes.

Recent work

Jobs around the Tri-Cities

Foundations, framing, additions and finish work across Kennewick, Pasco, Richland and the rest of the Tri-Cities.

A second-storey addition framed, sheathed and with its trusses set
Second-storey addition, framed and sheathed
A carpenter standing in a freshly framed wall layout on a new slab
Wall framing on a new slab
A finished raised deck over a covered patio with planters
Raised deck over a covered patio
A bedroom with a coffered ceiling and recessed lighting
Coffered ceiling, primary bedroom

Materials

Choose your finishes before we start

Cabinets, tile, flooring and fixtures all get picked before anything is ordered, so what you sign for is what gets installed.

Next step

Ready to make the most of your lot?

The first call is short. Where the property is, what you're picturing, and whether the lot will take it. If the answer is no, we'll say so.

Call nowGet a quote