Permit is to convert portion of existing SFD home to ADU
Alteration or repair at 120 30th St, Boulder
Boulder Planning and Development Services permit BLD-SFD2025-00277: issued Feb 6, 2026 for alteration or repair work at 120 30th St. Permit is to convert portion of existing SFD home to ADU. Unit will be within the building envelope and consist of a living room, a previously permitted bathroom, a kitchen with a previously permitted bar sink and a bedroom. There is a lockable separation between the ADU and the principal residence. Existing first floor sq ft is 1861 and 2nd floor is 750Sq ft for a total of 2611 sq ft of which 567 is proposed for the ADU. The ADU will use existing electrical, plumbing and HVAC. and will only require minor finishes.
- Permit number
- BLD-SFD2025-00277
- Issued
- Type of work
- Alteration or repair
- Status
- Finished
- Reported cost
- $8,368
- ZIP code
- 80305
- City's category
- Building Permit - Single Family Detached Dwelling, Alteration
- City's status
- Letter of Completion
- Source
- Boulder Planning and Development Services permit data (this record)
Type of work and status are our own standard labels, so permits compare across cities. The city's wording is in the "City's category" and "City's status" rows. We show costs under $100 as not listed, because filers often enter $0 or $1 when the city doesn't require a cost.
All permits at 120 30th St, and what's permitted nearby
Boulder Planning and Development Services updated its data Oct 6, 2026. We checked it Oct 7, 05:22 UTC. See the city's official records.
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