3639 21st St

Boulder, CO 80304

13 permits on record here. The newest, Dec 6, 2024: Residential rooftop Solar PV 27.7Kw. Boulder publishes permits without map coordinates, so this address has no map and no quarter-mile list.

1. Residential rooftop Solar PV 27.7Kw

   Electrical
   Dec 6, 2024$58,500
2. In-ground concrete swimming pool (40' x 20' x 23'07" x 12' x 16'05" x 8') and in-ground concrete spa (7'09" x…

   Pool or spa
   Feb 16, 2023$306,800
3. The proposed project is for the alteration of an existing 3-level residence

   Plumbing
   Feb 15, 2022$78,300
4. The proposed project is for the alteration of an existing 3-level residence

   Mechanical (HVAC)
   Feb 15, 2022$55,000
5. The proposed project is for the alteration of an existing 3-level residence

   Electrical
   Feb 15, 2022$106,500
6. The proposed project is for the alteration of an existing 3-level residence

   Addition
   Feb 15, 2022$4,545,000
7. Installation of 4.2 kw, solar roofing tile

   Electrical
   Aug 31, 2007$27,600
8. New 7269 sf SFD, 5 bedrooms, three full bathrooms

   Plumbing
   May 14, 2007$35,000
9. New 7269 sf SFD, 5 bedrooms, three full bathrooms

   Mechanical (HVAC)
   May 14, 2007$71,400
10. New 7269 sf SFD, 5 bedrooms, three full bathrooms

    Electrical
    May 14, 2007$30,100
11. New 7269 sf SFD, 5 bedrooms, three full bathrooms

    New building
    May 14, 2007$879,586
12. Plan check fee due on voided permit no s6839 04/27 the original general permit

    New building
    Nov 13, 1992not listed
13. Single family dwelling att garage partial finishe the original general permit

    New building
    Apr 27, 1992$274,000

• 3633 21st St newest permit Oct 10, 2024
• 3621 21st St newest permit Jun 24, 2026
• 3867 21st St newest permit May 4, 2026
• 2980 21st St newest permit Jul 20, 2026
• 2941 21st St newest permit Nov 18, 2025
• 2921 21st St newest permit Oct 7, 2025
• 2881 21st St newest permit Sep 23, 2026
• 2860 21st St newest permit Aug 18, 2026
• 2820 21st St newest permit Jul 28, 2026
• 2327 21st St newest permit Aug 25, 2026

Boulder Planning and Development Services updated its data Oct 8, 2026. We checked it Oct 8, 09:23 UTC. See the city's official records.

At this address: every permit the city holds. Nearby: permits from the last two years, from our copy of the city's data.

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