Seattle’s one-stop-shop ADU company
Maximizing your property’s potential with flexible, modern living spaces.
Considering adding an ADU on your property? Plumb ADU is a Seattle-based construction company dedicated to ADUs. Whether you’re interested in one of our pre-designed units or have another design in mind, we’ll work with you every step of the way from design and permitting to construction and inspection to bring your ADU vision to life.
There’s a lot to consider with any ADU project and sometimes it’s hard to know where to start. We offer two pre-designed units ready to customize, or we can work with you on other options, whether it be a Seattle pre-approved design or something totally custom.
What we do
Plumb pre-designed units
We offer two of our own pre-designed units, a studio/guest suite and a one-bedroom unit. Each features a warm, modern, light-filled design with our signature pop-out window and the ability to customize your finishes.
Seattle pre-approved units
The City of Seattle’s ADUniverse offers numerous designs for purchase and several that have been pre-approved by the City of Seattle, saving you time. We can work with you on any of these existing designs and manage the end-to-end build process.
Custom
Have an existing design or want to do something totally custom? We can help! We work with talented architects that can bring your dream DADU to life.
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Let's hop on a call to learn more about your project ideas and goals. We'll take an initial online look at your property to make sure an ADU could be an option for you!
Fill out our contact form to get started.
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Next, we'll meet with you on-site for a more detailed deep dive into your project. Some things we'll look at during this visit are:
Utility tie-in: can your electrical panel handle the additional load?
How would we connect to your water and sewer?
What are your zoning setbacks?
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After we’ve assessed the feasibility of the project, we'll provide you with a cost estimate and potential construction timeline.
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If you decide to move forward with us, the first step is permitting. We work with the city on your behalf to cross all the t’s and dot all the i’s.
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At this point you’ll get to choose your finishes! We offer several options for siding, cabinets, appliances, fixtures, etc. to let you customize your space to your liking and desired price point.
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We work with our contractors to build your ADU on-site! We’ll take care of the foundation, utility tie ins, appliances, and finishes, leaving you with a beautiful, modern, turn key ADU. We can even recommend some landscaping professionals.
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To wrap up your project, we will work through the final inspection with the city to get signoff and make sure everything is up to code. Then we’ll hand off the keys!
Our process
Why an ADU?
Building an ADU on your property in Seattle can offer a host of benefits for homeowners:
It can provide a valuable source of short or long-term rental income, especially in a city with a high demand for housing.
It can increase the value of your property and often provide a return on investment.
Offers flexible living arrangements, allowing for multi-generational families to live together while maintaining privacy and independence.
Helps address the affordable housing crisis in Seattle by providing more housing options for residents.
When you’re looking to invest in an ADU on your property, whether to generate rental income, move in a parent or friend, or have some extra space for your own family, you want to maximize your investment, and create an enjoyable living space. Plumb ADU knows how important thoughtful design and quality construction are, and have designed our units to give you a huge bang for your buck and delight anyone staying with you.
We are a small, local shop with a network of reliable construction professionals. We care about creating inspiring and functional spaces and we’d love to take on your ADU project!
Why Plumb ADU?
Connect with us on Instagram @plumbadu
