# Building permits at 4520 Nassau Pl, Boulder, CO 14 permits on record here. The newest, Jun 17: REVISION 8/5/26-Layout and string revisions. Boulder publishes permits without map coordinates, so this address has no map and no quarter-mile list. ## At this address | Date | Type | Work | Cost | Permit | |---|---|---|---|---| | Jun 17, 2026 | Electrical | REVISION 8/5/26-Layout and string revisions. PV roof mounted system w/ ESS & EV charger | $39,425 | [ELE2026-00565](https://nearbypermits.com/boulder/permit/ELE2026-00565/) | | Apr 27, 2026 | Mechanical (HVAC) | HVAC: furnace replacement, A/C replacement Any electrical work required beyond a like-for-like replacement of equipment will require an electrical permit for inspection of the electrical scope. PLEASE NOTE: APPLICABLE ONLY TO SYSTEMS WITH FUEL BURNING APPLIANCES: All new plastic glued vents for fuel | $15,800 | [MEC2026-00639](https://nearbypermits.com/boulder/permit/MEC2026-00639/) | | Jan 20, 2026 | Addition | Interior remodel w/ small second floor addition. To include new windows, finishes, exterior finishes | $650,000 | [BLD-SFD2025-00525](https://nearbypermits.com/boulder/permit/BLD-SFD2025-00525/) | | Jan 14, 2026 | Roofing | Contractor withdrawn-Refund Issued All Structures must be permitted separately Total tear-off & reroof of SFD, 32 squares of dimensional shingles on a pitch represented as 6/12. All roof materials shall be installed per manufacturer?s specs. All roof covering materials shall be listed as Class A as | $12,208 | [RFG2026-00024](https://nearbypermits.com/boulder/permit/RFG2026-00024/) | | Nov 3, 2020 | Mechanical (HVAC) | *Installing a replacement air conditioner. | $8,556 | [MEC2020-01763](https://nearbypermits.com/boulder/permit/MEC2020-01763/) | | Aug 31, 2015 | Mechanical (HVAC) | Replace existing forced air furnace with new 110k BTU, 80% eff. furnace. | $3,646 | [PMT2015-03700-MEC](https://nearbypermits.com/boulder/permit/PMT2015-03700-MEC/) | | Jul 19, 2010 | Fence, wall or deck | Fence Permit - For cedar wings and gates (east and west) 4 feet tall and 19 feet in length for SFD. | $500 | [PMT2010-02954-FEN](https://nearbypermits.com/boulder/permit/PMT2010-02954-FEN/) | | Nov 28, 2000 | Plumbing | Basement Finish | $2,000 | [PMT2000-04838-PLB](https://nearbypermits.com/boulder/permit/PMT2000-04838-PLB/) | | Nov 28, 2000 | Mechanical (HVAC) | Basement Finish | $800 | [PMT2000-04838-MEC](https://nearbypermits.com/boulder/permit/PMT2000-04838-MEC/) | | Nov 28, 2000 | Electrical | Basement Finish | Not listed | [PMT2000-04838-ELE](https://nearbypermits.com/boulder/permit/PMT2000-04838-ELE/) | | Nov 28, 2000 | Alteration or repair | Basement Finish | $25,000 | [PMT2000-04838](https://nearbypermits.com/boulder/permit/PMT2000-04838/) | | Sep 18, 2000 | Alteration or repair | Replace an existing porch including the concrete. | $4,000 | [PMT2000-03828](https://nearbypermits.com/boulder/permit/PMT2000-03828/) | | Aug 11, 1998 | Alteration or repair | Basement finish the original general permit number is 985059. | $19,000 | [PMT1998-05059](https://nearbypermits.com/boulder/permit/PMT1998-05059/) | | Apr 13, 1998 | New building | Single family dwelling unfinished basement attache the original general permit | $140,000 | [PMT1998-02196](https://nearbypermits.com/boulder/permit/PMT1998-02196/) | ## Zoning requests nearby We don't list zoning cases for Boulder yet. Look them up on the city's Board of Zoning Adjustment page: https://bouldercolorado.gov/government/board-commission/board-zoning-adjustment ## More on this street Other addresses on Nassau Pl with permits, nearest house number first: - [4565 Nassau Pl](https://nearbypermits.com/boulder/address/4565-nassau-pl/): newest permit Jul 28, 2025 - [4435 Nassau Pl](https://nearbypermits.com/boulder/address/4435-nassau-pl/): newest permit Jun 11, 2025 - [4605 Nassau Pl](https://nearbypermits.com/boulder/address/4605-nassau-pl/): newest permit Sep 11, 2025 - [4295 Nassau Pl](https://nearbypermits.com/boulder/address/4295-nassau-pl/): newest permit Jun 25, 2026 - [4141 Nassau Pl](https://nearbypermits.com/boulder/address/4141-nassau-pl/): newest permit Jan 2, 2026 - [4094 Nassau Pl](https://nearbypermits.com/boulder/address/4094-nassau-pl/): newest permit Dec 3, 2025 - [4075 Nassau Pl](https://nearbypermits.com/boulder/address/4075-nassau-pl/): newest permit Jan 7, 2026 - [4035 Nassau Pl](https://nearbypermits.com/boulder/address/4035-nassau-pl/): newest permit Oct 24, 2025 --- Source: Boulder Planning and Development Services permit data (https://www.arcgis.com/home/item.html?id=e3ff6248e4a547bcba31025d2c5c9fee). Checked 2026-10-09 14:11 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/ All 14 permits at this address: https://nearbypermits.com/boulder/address/4520-nassau-pl/