Renting Out Your ADU: A Seattle Homeowner’s Guide
By Eric Dexter, Owner & Builder ·
A backyard ADU is one of the few ways to turn land you already own into monthly income — which is exactly why “ADU rentals near me” is one of the fastest-rising searches in Washington. If you're thinking about renting one out (or building one to rent), here's how it works.
Long-term vs. short-term rental
The first decision is how you'll rent it. A long-term rental (a standard lease) gives you steady, predictable income with the least day-to-day work and the fewest regulatory hurdles. A short-term rental (think nightly stays) can earn more per night but comes with more management and stricter local rules — Seattle and many cities regulate short-term rentals, so check your city before counting on it.
What can you charge?
Rent depends on the unit's size, location and finish level, but in a high-cost market like Seattle a well-built DADU can command real monthly rent — often enough to cover a big share of the loan you used to build it. We break down the returns in is an ADU a good investment?
You don't have to live on-site
A big reason renting an ADU got easier: Washington rolled back the old owner-occupancy requirement in many cases, so on most lots you can rent out the ADU — or even both homes — without living there yourself. That's a major shift for anyone thinking of an ADU as an income property.
Building an ADU to rent
If your goal is rental income, design for it from the start: a private entrance, good separation from the main house, durable finishes that hold up to tenants, and a smart, efficient layout. Browse ready-to-build floor plans for rentable layouts, and price your build with the ADU cost calculator.
A note on being a landlord
Renting out an ADU makes you a landlord, which comes with responsibilities — screening tenants, a solid lease, and following Washington landlord-tenant rules. It's very manageable, especially with a single unit, but worth understanding before you start.
Make your ADU pay
The math starts with an honest build cost. Estimate yours with the calculator, see the financing options, or talk to us about building a backyard home designed to rent.