The proposed project is for the alteration of an existing 3-level residence
Plumbing at 3639 21st St, Boulder
Boulder Planning and Development Services permit PLB2021-00639: issued Feb 15, 2022 for plumbing work at 3639 21st St. The proposed project is for the alteration of an existing 3-level residence. The total area of the proposed house, including unfinished areas, will be 9,114 sf. The existing residence has a total finished area of 7,180 sf and proposed alterations will result in a total finished area of 7,173 sf. Two bump-outs on the existing house will be removed and one balcony will be converted into 48 sf of new finished space, accounting for the slight decrease in finished area. The existing 927 sf attached garage will receive an addition of 206 sf for new mechanical and storage space. Existing porches, decks and balconies totaling 1,580 sf will be removed and replaced with a new front porch (299 sf), back patio (625 sf) and roof deck (1,159 sf). A 347 sf uncovered courtyard will be added to the east of the house and 210 sf accessory trellis structure will be added to the west. All interior finishes will be replaced and structural work will be performed to accommodate the new patios and roof deck as well as a new flat roof. Existing siding will be replaced with brick.
- Permit number
- PLB2021-00639
- Issued
- Type of work
- Plumbing
- Status
- Finished
- Reported cost
- $78,300
- ZIP code
- 80304
- City's category
- Plumbing Permit, Plumbing Sub-Permit
- City's status
- Closed
- 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 3639 21st St, and what's permitted nearby
Boulder Planning and Development Services updated its data Oct 8, 2026. We checked it Oct 8, 20:21 UTC. See the city's official records.
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