You can build a Detached Accessory Dwelling in a single-family or lowrise zone, and in some cases, in a neighborhood or commercial zone. However, various codes limit the size and placement of your AADU or DADU. At Ballard Backyard Cottages, we can easily help you determine your eligibility, and we are happy to help.
An ADU (Auxiliary or Accessory Dwelling Units) is a self-contained living space within an existing single-family dwelling. … DADUs (Detached Auxiliary Dwelling Units) are the same, detached from the property’s main house.
We expect in 2022 that the cost will typically range between $5oo to $700 a square foot. The cost to build a DADU can vary widely. For a DADU, your project’s size, design, finishes, and site conditions all impact the overall cost. Our initial estimate for your project will go a long way in helping you determine your DADU budget.
A DADU is limited to 1,000 square feet of gross floor area in single-family zones, including RSL, and 650 square feet in a lowrise zone. In addition, the DADU must meet all the Seattle residential, building, mechanical, electrical, and energy code requirements that apply to single-family dwellings.
The City of Seattle developed pre-approved DADU construction plans that offer a faster, easier, and more predictable design and permitting process to simplify and streamline permitting. Pre Approved Designs
The DADU journey begins with confirmation that your property meets the baseline requirements to build a structure on your property. Then, unless you are familiar with construction processes in Seattle, we would recommend hiring a trusted and experienced DADU contractor. A contractor like us will pull together all the resources needed to get your project from permitting to completion.
For more info on DADU Construction and other DADU topics check out ALL ABOUT DADUs blog