891 12th St

Boulder, CO 80302

18 permits on record here. The newest, Oct 8, 2025: Flat Panel Aluminum Non-Illuminated Sign to Identify Building. Boulder publishes permits without map coordinates, so this address has no map and no quarter-mile list.

1. Flat Panel Aluminum Non-Illuminated Sign to Identify Building

   Sign
   Oct 8, 2025$514
2. Remove existing dirt and concrete parking lot to correct existing waterproofing on a multi-family building

   Roofing
   Oct 10, 2024$200,000
3. Demo of walls in units that were built on top of previously permitted knee walls

   Demolition
   Sep 27, 2024not listed
4. Permit for the repair of some interior assemblies and finishes due to water damage in a multifamily building

   Alteration or repair
   Aug 12, 2024$60,000
5. See attach1_891 12th street_09-03-2021 the following is from that attachment

   Plumbing
   Mar 21, 2022$567,542
6. See attach1_891 12th street_09-03-2021 the following is from that attachment

   Mechanical (HVAC)
   Mar 21, 2022$356,779
7. See attach1_891 12th street_09-03-2021 the following is from that attachment

   Electrical
   Mar 21, 2022$498,588
8. Reconfigure and reconstruct the interior layout of the building to create sixteen (16) separate and…

   Alteration or repair
   Mar 21, 2022$7,869,841
9. AS-BUILTS AND CALCS FOR TOP FLOOR REMOTE AREA REQUIRED BEFORE FINAL INSPECTIONS New NFPA 13/13R wet pipe fire…

   Fire systems
   Feb 16, 2022$48,657
10. New fire alarm system for the remodel of a structure to replace the high-intensity group living quarters and…

    Fire systems
    Nov 10, 2021$30,825
11. Installation of a 4.32 kW grid tied flush mount PV system in one array on the flat roof section of the SE…

    Electrical
    Aug 2, 2017$26,000
12. Remove portion of existing roofing and re-roof with 60 mil EPDM

    Roofing
    May 3, 2013$8,500
13. New Backflow Preventor

    Fire systems
    Mar 8, 2011$1,600
14. Scope of Work Letter for Mariposa House

    Fire systems
    Oct 4, 2010$225
15. Interior remodel in Marpa House to remodel mail room and 4 existing bedrooms to created 2 suites and 6…

    Plumbing
    Aug 10, 2010$30,000
16. Interior remodel in Marpa House to remodel mail room and 4 existing bedrooms to created 2 suites and 6…

    Electrical
    Aug 10, 2010$7,000
17. Interior remodel in Marpa House to remodel mail room and 4 existing bedrooms to created 2 suites and 6…

    Alteration or repair
    Aug 10, 2010$76,000
18. Erect a new retaining wall along the north and east property lines

    Fence, wall or deck
    Jun 10, 2002$6,000

• 907 12th St newest permit Dec 4, 2025
• 916 12th St newest permit May 16, 2025
• 845 12th St newest permit Oct 13, 2025
• 840 12th St newest permit Sep 29, 2025
• 830 12th St newest permit Jan 20, 2026
• 955 12th St newest permit Sep 28, 2026
• 820 12th St newest permit May 29, 2025
• 1045 12th St newest permit May 27, 2025
• 735 12th St newest permit Oct 18, 2024
• 728 12th St newest permit Aug 8, 2025

Boulder Planning and Development Services updated its data Oct 6, 2026. We checked it Oct 6, 17:57 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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