120 S 31st St

Boulder, CO 80305

At this address

10 permits on record. Newest issued Sep 15: Addition of Mini-Split System

Within ¼ mile

Boulder publishes permits without map coordinates, so this address has no map and no quarter-mile list.

1. Addition of Mini-Split System

   Mechanical (HVAC)
   Sep 15$4,062
2. Void for inactivity-NO INSPECTIONS in 180 DAYS Replace furnace & AC - new 60K BTU 80% furnace & 2.0 Ton 16…

   Mechanical (HVAC)
   May 31, 2024$14,819
3. Permit Voided due to 180 days of inactivity/non-inspection

   Mechanical (HVAC)
   Apr 15, 2024$3,560
4. Install a 9.200 kw grid tied, roof flush mounted solar photovoltaic system

   Electrical
   May 31, 2023$24,439
5. Installation of 10.07 kw rooftop

   Electrical
   Apr 29, 2016$21,046
6. Tear-off & reroof of SFD, 26 squares of asphalt shingles on a pitch represented as 4/12

   Roofing
   May 31, 2011$4,981
7. Replacement Forced Air Furnace

   Mechanical (HVAC)
   Mar 25, 2011$2,660
8. New Comfort Cooling

   Mechanical (HVAC)
   May 24, 2005$4,673
9. Underground electrical service, and upgrade service to 200 amps

   Electrical
   Jul 2, 2004$3,000
10. 432 square foot 13' high shed in rear yard

    New building
    Jun 16, 2004$8,247

We don't list zoning cases for Boulder yet. Look them up on the city's Board of Zoning Adjustment page.

• 105 S 31st St newest permit Apr 9, 2026
• 90 S 31st St newest permit Dec 10, 2025
• 170 S 31st St newest permit Aug 4, 2026
• 70 S 31st St newest permit Jul 8, 2025
• 180 S 31st St newest permit Jun 9, 2026
• 50 S 31st St newest permit Oct 7, 2025
• 18 S 31st St newest permit Oct 7, 2025

Boulder Planning and Development Services updated its data Oct 10, 2026. We checked it Oct 10, 14:36 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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