Guides, tips, and insights on building ADUs and DADUs in the Seattle and Tacoma area.
House Bill 1337 is the most significant piece of ADU legislation Washington state has ever passed. Signed into law by Governor Jay Inslee in May 2023, this bill fundamentally reshaped the rules around accessory dwelling units across the state.
Read More →Tacoma has quietly become one of the best cities in Washington for building a detached accessory dwelling unit, with lower construction costs than Seattle, a growing pool of experienced DADU contractors, and city regulations that actively encourage backyard cottage development.
Read More →One of the first questions every homeowner asks when considering an accessory dwelling unit is: how much is this going to cost? The answer depends on the type of ADU you're building, your location in Washington state, the size and finishes you choose, and your site conditions.
Read More →Choosing the right contractor is one of the most important decisions you'll make during your ADU project. The builder you hire will directly affect your costs, timeline, quality, and overall experience.
Read More →Seattle has become one of the most ADU-friendly cities in Washington state, but the permitting process still involves multiple steps, specific requirements, and real costs. If you're planning to build an ADU or DADU in Seattle, here's a clear breakdown of what to expect.
Read More →Seattle's ADU boom shows no signs of slowing down. Since Washington passed HB 1337 in 2023, permit applications for backyard cottages and accessory dwelling units have surged across the city — and finding the right builder can be overwhelming.
Read More →Building an accessory dwelling unit is a significant investment, and getting your budget right from the start can mean the difference between a smooth project and a stressful one. Whether you're planning a basement conversion or a new backyard cottage in the Seattle-Tacoma area, here's a detailed breakdown of the costs you should plan for.
Read More →Not every ADU project requires building from the ground up. If you have a detached or attached garage that's mostly storing old bikes and holiday decorations, converting it into a livable accessory dwelling unit is one of the most cost-effective ways to add value, rental income, and usable space to your property.
Read More →Accessory dwelling units have gone from niche housing curiosity to mainstream building trend across the Puget Sound. Permit applications for ADUs in Seattle have increased dramatically over the past several years, and several converging factors suggest the trend is just getting started.
Read More →If you're thinking about adding an accessory dwelling unit to your property in the Seattle or Tacoma area, one of the first decisions you'll face is whether to build an attached ADU (AADU) or a detached accessory dwelling unit (DADU). Both options can add living space, generate rental income, and increase property value, but they differ significantly in cost, design flexibility, and permitting requirements.
Read More →Get free quotes from top-rated ADU builders in the Puget Sound region.
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