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  • 2026 ADU/DADU Calendar Now Open — Design-first, white-glove build management.
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Compact

Space-efficient ADUs for singles, couples, or starter rentals.

  • Designed For : Singles, young couples, short-term or starter rentals
  • Key Features : Studio or 1 BD / 1 BA; 500–650 sf
  • Material : High-quality siding, wood accents, energy-efficient windows

Main St ADU 550 Sf

  • 1 BD
  • 0.75 BA
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Project type
Compact
Size
Tiny ADU (400 sq ft)
No. of rooms
1
No. of baths
0.75 BA
ADU type
Compact
Notable
Furnished
Location (state)
Washington

Let us help you to choose the best package according to your requirements.

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What people say about us

United Signature handled a large and complex kitchen reconstruction and remodel after a leak was discovered in the wall and under the floorboards. They were great communicators and helped me handle insurance and the HOA.
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Michelle O'Brien

We had a bathroom and kitchen remodel done by Oleg (senior project manager), Natasha (lead designer) and Sergei (project manager). Excellent, high quality work. Always available and professional.
JOhn

John-Patrick

Exceptional service! I recently had my kitchen renovated by United Signature Design and Build and I couldn’t be happier with the results. From the initial consultation to the final details, everything went so smooth.
alina

Alina Put

Oleg, Anna, and their team made all of our kitchen dreams come true! This review is long overdue but they were the absolute best team to work with. We will absolutely be using their services again when we decide to renovate our master bathroom!
Courtney

Courtney Carroll

It was a pleasure to work with United Signatu. Company perform best quality of services and products. Friendly approach, time efficiency. If you are looking for a project well done I strongly recommend United Signature .
rubin

Tatyana Kozyubenko

Awesome kitchen remodeler company. Got the job done quick and on time. Will definitely use them again when I have remodel needs. I recommend to everyone looking for a good kitchen remodeler. Also shoutout to Nina for doing a great job with her work.
Mia

Lauren

Frequently Asked Questions About ADU Construction

How much does it cost to build an ADU?
There are many different cost factors when building an ADU, including the size of the build, the plumbing and electrical work needed, and the desired materials and finishes. For a more in-depth cost breakdown and a more accurate quote, please call or message us regarding an ADU construction estimate.
There are many different cost factors when building an ADU, including the size of the build, the plumbing and electrical work needed, and the desired materials and finishes. For a more in-depth cost breakdown and a more accurate quote, please call or message us regarding an ADU construction estimate.
There are many different cost factors when building an ADU, including the size of the build, the plumbing and electrical work needed, and the desired materials and finishes. For a more in-depth cost breakdown and a more accurate quote, please call or message us regarding an ADU construction estimate.
There are many different cost factors when building an ADU, including the size of the build, the plumbing and electrical work needed, and the desired materials and finishes. For a more in-depth cost breakdown and a more accurate quote, please call or message us regarding an ADU construction estimate.

There are many different cost factors when building an ADU, including the size of the build, the plumbing and electrical work needed, and the desired materials and finishes. For a more in-depth cost breakdown and a more accurate quote, please call or message us regarding an ADU construction estimate.

There are many different cost factors when building an ADU, including the size of the build, the plumbing and electrical work needed, and the desired materials and finishes. For a more in-depth cost breakdown and a more accurate quote, please call or message us regarding an ADU construction estimate.

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2026 ADU Guide – What to Know Before You Build

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