4520 Nassau Pl

Boulder, CO 80301

At this address

14 permits on record. Newest issued Jun 17: REVISION 8/5/26-Layout and string revisions

Within ¼ mile

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

1. REVISION 8/5/26-Layout and string revisions

   Electrical
   Jun 17$39,425
2. HVAC: furnace replacement, A/C replacement Any electrical work required beyond a like-for-like replacement of…

   Mechanical (HVAC)
   Apr 27$15,800
3. Interior remodel w/ small second floor addition

   Addition
   Jan 20$650,000
4. Contractor withdrawn-Refund Issued All Structures must be permitted separately Total tear-off & reroof of SFD

   Roofing
   Jan 14$12,208
5. *Installing a replacement air conditioner

   Mechanical (HVAC)
   Nov 3, 2020$8,556
6. Replace existing forced air furnace with new 110k BTU, 80% eff

   Mechanical (HVAC)
   Aug 31, 2015$3,646
7. Fence Permit - For cedar wings and gates (east and west) 4 feet tall and 19 feet in length for SFD

   Fence, wall or deck
   Jul 19, 2010$500
8. Basement Finish

   Plumbing
   Nov 28, 2000$2,000
9. Basement Finish

   Mechanical (HVAC)
   Nov 28, 2000$800
10. Basement Finish

    Electrical
    Nov 28, 2000not listed
11. Basement Finish

    Alteration or repair
    Nov 28, 2000$25,000
12. Replace an existing porch including the concrete

    Alteration or repair
    Sep 18, 2000$4,000
13. Basement finish the original general permit number is 985059

    Alteration or repair
    Aug 11, 1998$19,000
14. Single family dwelling unfinished basement attache the original general permit

    New building
    Apr 13, 1998$140,000

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

• 4565 Nassau Pl newest permit Jul 28, 2025
• 4435 Nassau Pl newest permit Jun 11, 2025
• 4605 Nassau Pl newest permit Sep 11, 2025
• 4295 Nassau Pl newest permit Jun 25, 2026
• 4141 Nassau Pl newest permit Jan 2, 2026
• 4094 Nassau Pl newest permit Dec 3, 2025
• 4075 Nassau Pl newest permit Jan 7, 2026
• 4035 Nassau Pl newest permit Oct 24, 2025

Boulder Planning and Development Services updated its data Oct 8, 2026. We checked it Oct 8, 20:19 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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