Why ADUs Are the Next Big Thing in Washington

In recent years, Accessory Dwelling Units—better known as ADUs—have gone from a niche idea to one of the most exciting movements in housing, especially in Washington State. Whether it's adding a compact home in your backyard or placing a retreat on a scenic piece of rural land, ADUs are proving to be flexible, sustainable, and future-forward solutions to how we live.

Loosening Codes = More Possibilities

Washington is evolving when it comes to zoning and building codes. Across the state—from Seattle to Chelan—(new legislation is making it easier than ever to build ADUs). Recent updates simplify the permitting process, reduce parking requirements, and allow for more flexible siting—even in rural areas or near waterfronts.

That means if you’ve been dreaming about a guesthouse, a rental unit, or a riverside getaway, it’s more doable than ever.

ADUs Fit the PNW Lifestyle

ADUs make sense in Washington. With land availability, multi-generational living needs, and the growing desire for income-generating properties, these compact dwellings offer a smart way to make the most of your lot-without overbuilding or disrupting the environment.

Plus, they’re perfect for:

* Housing aging parents

* Hosting guests

* Creating short-term rentals or passive income

* Building phased developments on rural land

* Getting away from it all—without going far

Spotlight: The Waterville ADU by modFORM

With clean lines, an efficient footprint, and materials chosen for simplicity and durability, the Waterville ADU feels both grounded and elevated. It opens up to panoramic views of the Columbia River, inviting the outdoors in through framed vistas and a restrained, earthy palette. This isn’t just an ADU—it’s a concept, a retreat, and a quietly powerful architectural statement.

The Future Is Small—and Smart

As more Washington homeowners and landowners look for flexible, intentional and affordable ways to live and build, ADUs are emerging as a top choice. And with forward-thinking designers like modFORM paving the way, the future of small-scale living looks incredibly bright (and beautifully designed).