1545 Walnut St

Boulder, CO 80302

60 permits on record here. The newest, Jun 9, 2025: Install a new backflow device (BFP). Boulder publishes permits without map coordinates, so this address has no map and no quarter-mile list.

1. Install a new backflow device (BFP)

   Fire systems
   Jun 9, 2025$14,686
2. Replace non-illuminated wall sign "CenturyLink"

   Sign
   Nov 17, 2011$200
3. Electrical work related to disconnection of rooftop mechanical equipment and reconnection of replacement…

   Electrical
   Sep 9, 2010$7,000
4. Mechanical Permit - For replacement of 2 cooling towers on top of Qwest Communications building (same size…

   Mechanical (HVAC)
   Jun 16, 2010$219,932
5. Replace steel underground tank in parking lot of Qwest

   Plumbing
   Sep 12, 2008$102,052
6. Replace steel underground tank in parking lot of Qwest

   Electrical
   Sep 12, 2008$20,347
7. Replace steel underground tank in parking lot of Qwest

   Alteration or repair
   Sep 12, 2008$72,064
8. Fire Alarm System

   Fire systems
   Apr 4, 2001$24,000
9. Upgrade HVAC for 3rd floor, includes removal

   Mechanical (HVAC)
   Feb 8, 2001$300,786
10. Upgrade HVAC for 3rd floor, includes removal

    Electrical
    Feb 8, 2001$49,000
11. Upgrade HVAC for 3rd floor, includes removal

    Alteration or repair
    Feb 8, 2001$350,000
12. Fire alarm system - basement × 2 permits

    Fire systems
    Oct 23, 2000 to Nov 3, 2000$34,000
13. Fire Alarm - 1st and 2nd floors

    Fire systems
    Oct 23, 2000$70,000
14. First and second floor remodel with mechanical and electrical

    Mechanical (HVAC)
    Oct 5, 2000$1,229,192
15. First and second floor remodel with mechanical and electrical

    Electrical
    Oct 5, 2000$490,000
16. First and second floor remodel with mechanical and electrical

    Alteration or repair
    Oct 5, 2000$2,015,523
17. Interior demo only

    Demolition
    Aug 25, 2000not listed
18. Internal remodel on first, second and third floor

    Mechanical (HVAC)
    Jul 6, 2000$105,753
19. Internal remodel on first, second and third floor

    Electrical
    Jul 6, 2000$22,965
20. Internal remodel on first, second and third floor

    Alteration or repair
    Jul 6, 2000$157,000
21. Interior demo in bsmt, south east corner

    Demolition
    May 17, 2000not listed
22. Install one telecommunication antenna on east side of existing penthouse plus related equipment

    Electrical
    Mar 20, 2000$3,120
23. Electrical

    Electrical
    Mar 5, 1999$15,000
24. Mechanical installing new ventilation ducts

    Mechanical (HVAC)
    Feb 3, 1999$61,500
25. Mechanical install chilled water piping

    Mechanical (HVAC)
    Jan 29, 1999$29,000
26. Plumbing install one floor drain

    Plumbing
    Jan 29, 1999$1,900
27. Remodel and upgrade HVAC the original general permit number is 985486

    Alteration or repair
    Aug 19, 1998$207,035
28. Electrical add 2 300 amp feeders

    Electrical
    May 14, 1998$38,259
29. Fire hook up fire alarm system

    Fire systems
    Jul 9, 1997$2,000
30. Electrical commercial service change

    Electrical
    Mar 11, 1997$474,462
31. Mechanical refrigeration system & ventilating equipment

    Mechanical (HVAC)
    Mar 10, 1997$250,000
32. Plumbing reduced pressure backflow preventor

    Plumbing
    Mar 10, 1997$3,431
33. Engine generator replacement the original general permit number is 971232

    Alteration or repair
    Mar 6, 1997$844,676
34. Electrical power for access control

    Electrical
    Feb 7, 1996$1,200
35. Electrical ELECTRICAL

    Electrical
    Nov 29, 1995$3,500
36. Mount equip cabinet & antenna panels on roof the original general permit numbe

    Alteration or repair
    Nov 28, 1995$50,000
37. Fire fire alarm detection system

    Fire systems
    Mar 4, 1994$150
38. Electrical adding a circuit

    Electrical
    Oct 14, 1993$500
39. Mechanical replace refrigeration system and comfort cooling

    Mechanical (HVAC)
    Jan 20, 1993$137,000
40. Interior rmdl

    Alteration or repair
    Dec 5, 1990$130,000
41. Mechanical fire dampers & grilles

    Mechanical (HVAC)
    Aug 30, 1989$1,200
42. Mechanical replace comfort cooling

    Mechanical (HVAC)
    Aug 30, 1989$7,200
43. Electrical remodel wiring

    Electrical
    Jul 12, 1989$1,500
44. Mech soundprf

    Alteration or repair
    Jul 11, 1989$25,000
45. Adding walls

    Alteration or repair
    Jul 11, 1989$5,000
46. Roofing reroof - insul & sp5

    Roofing
    Jul 10, 1989$140,730
47. Electrical HVAC unit control

    Electrical
    May 4, 1989$1,000
48. Mech equip

    Alteration or repair
    Apr 13, 1989$115,000
49. Plumbing remodel - one floor drain

    Plumbing
    Apr 7, 1989$700
50. Electrical SVC CHG

    Electrical
    Mar 9, 1989$92,000
51. Electrical wire a/c & detectors

    Electrical
    Feb 10, 1989$30,000
52. Electrical hookup work station

    Electrical
    Oct 4, 1988$4,000
53. Electrical wire boiler controls

    Electrical
    Oct 4, 1988$4,000
54. Electrical extend circuits

    Electrical
    Sep 19, 1988$2,400
55. Electrical a/c unit in penthouse

    Electrical
    Sep 2, 1988$10,000
56. Remodel. The original general permit number is m9850

    Alteration or repair
    Jul 25, 1988$40,000
57. Electrical REWIRE

    Electrical
    Jul 18, 1988$8,000
58. Mechanical hot water system

    Mechanical (HVAC)
    Jul 6, 1988$60,000
59. Electrical replace switch gear

    Electrical
    Apr 21, 1988$70,000

• 1603 Walnut St newest permit Jul 20, 2026
• 1470 Walnut St newest permit Mar 20, 2026
• 1620 Walnut St newest permit May 13, 2025
• 1634 Walnut St C newest permit Sep 24, 2026
• 1655 Walnut St 301 newest permit Jan 15, 2026
• 1401 Walnut St newest permit Aug 7, 2026
• 1707 Walnut St 106 newest permit May 28, 2026
• 1708 Walnut St newest permit Feb 21, 2025
• 1375 Walnut St newest permit May 7, 2026
• 1726 Walnut St newest permit Oct 17, 2025

Boulder Planning and Development Services updated its data Oct 6, 2026. We checked it Oct 6, 23:40 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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