ADUniverse 2.0: Pre-approved plans for ADUs and middle housing
Purchaser
City of Seattle
Country
United States
Notice published
12 May 2026
Tenqual indexed
13 May 2026
Closing date
16 Jul 2026
Source ID
Docs found
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Tender summary
The City of Seattle is updating its ADUniverse website with new pre-approved plans for accessory dwelling units (ADUs) and middle housing now allowed throughout Seattle's residential zones. We invite designers, architects, and homebuilders to submit ADU and middle housing designs that fulfill the criteria and follow the requirements outlined in our Submission Guide. We welcome multiple submissions. After entering information for the first submission, it will ask if you have a second one (and, after that, if you have a third). This form will accept up to three submissions. If you wish to submit more than three designs, package the information as a PDF and send it to nicolas.welch@seattle.gov . Submissions on OpenGov ask for an employee identification number (EIN). Individuals submitting a design who do not have an EIN should enter their SSN in that field. For technical issues with this form, email nicolas.welch@seattle.gov .
What to check before bidding
- Issued by City of Seattle.
- Located in United States.
- Source notice seattle:2025-061 on US OpenGov.
- Notice published 12 May 2026; Tenqual indexed it 13 May 2026.
- Deadline listed as 16 Jul 2026.
- Source documents portal identified.
- Create a free tender alert to catch similar opportunities before the deadline pressure starts.