# Building permits at 3390 4th St, Boulder, CO

Eight permits on record here. The newest, Apr 6: ESS Installation new system size: 15.00kwhac · 1 franklin apower 2. 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 |
|---|---|---|---|---|
| Apr 6, 2026 | Electrical | ESS Installation new system size: 15.00kwhac · 1 franklin apower 2, 15.00kwh battery | $19,518 | [ELE2026-00306](https://nearbypermits.com/boulder/permit/ELE2026-00306/) |
| Jul 20, 2023 | Electrical | Installation of grid-tied, roof mounted PV solar using 15 x 405 REC REC405AA Pure Black SYSTEM SIZE: 6.08 KW DC STC, 5.24 KW AC MODULE DIMENSION: 71.7" X 40.0" MICROINVERTER MODEL: (15) IQ8A-72-2-US | $22,027 | [ELE2023-00679](https://nearbypermits.com/boulder/permit/ELE2023-00679/) |
| Sep 13, 2022 | Plumbing | Alteration and remodel of existing single-family dwelling unit. Floor area and Building Coverage shall not be increased. Street facing limited demolition approved through HIS2022-00018 | $40,000 | [PLB2022-00329](https://nearbypermits.com/boulder/permit/PLB2022-00329/) |
| Sep 13, 2022 | Mechanical (HVAC) | Alteration and remodel of existing single-family dwelling unit. Floor area and Building Coverage shall not be increased. Street facing limited demolition approved through HIS2022-00018 | $33,000 | [MEC2022-00904](https://nearbypermits.com/boulder/permit/MEC2022-00904/) |
| Sep 13, 2022 | Electrical | Alteration and remodel of existing single-family dwelling unit. Floor area and Building Coverage shall not be increased. Street facing limited demolition approved through HIS2022-00018 | $35,000 | [ELE2022-00710](https://nearbypermits.com/boulder/permit/ELE2022-00710/) |
| Sep 13, 2022 | Alteration or repair | Alteration and remodel of existing single-family dwelling unit. Floor area and Building Coverage shall not be increased. Street facing limited demolition approved through HIS2022-00018 | $300,000 | [BLD-SFD2022-00225](https://nearbypermits.com/boulder/permit/BLD-SFD2022-00225/) |
| Apr 17, 2017 | Mechanical (HVAC) | Installation of a replacement gas fired, 40k BTU, 38 gallon water heater. Install thermal expansion device, service outlet and carbon monoxide detector(s) per code. | $890 | [PMT2017-01536-MEC](https://nearbypermits.com/boulder/permit/PMT2017-01536-MEC/) |
| Feb 11, 2011 | Mechanical (HVAC) | Replace hot water heater. | $800 | [PMT2011-00598-MEC](https://nearbypermits.com/boulder/permit/PMT2011-00598-MEC/) |

## More on this street

Other addresses on 4th St with permits, nearest house number first:

- [3380 4th St](https://nearbypermits.com/boulder/address/3380-4th-st/): newest permit Apr 3, 2026
- [3369 4th St](https://nearbypermits.com/boulder/address/3369-4th-st/): newest permit Dec 11, 2025
- [3421 4th St](https://nearbypermits.com/boulder/address/3421-4th-st/): newest permit Jan 23, 2026
- [3355 4th St](https://nearbypermits.com/boulder/address/3355-4th-st/): newest permit Jul 9, 2026
- [3311 4th St](https://nearbypermits.com/boulder/address/3311-4th-st/): newest permit Nov 17, 2025
- [3309 4th St](https://nearbypermits.com/boulder/address/3309-4th-st/): newest permit May 22, 2025
- [3307 4th St](https://nearbypermits.com/boulder/address/3307-4th-st/): newest permit Apr 13, 2026
- [3302 4th St](https://nearbypermits.com/boulder/address/3302-4th-st/): newest permit Jul 3, 2025
- [3500 4th St](https://nearbypermits.com/boulder/address/3500-4th-st/): newest permit Nov 5, 2025
- [3239 4th St](https://nearbypermits.com/boulder/address/3239-4th-st/): newest permit Oct 21, 2024

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Source: Boulder Planning and Development Services permit data (https://www.arcgis.com/home/item.html?id=e3ff6248e4a547bcba31025d2c5c9fee). Checked 2026-10-06 18:44 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/

All 8 permits at this address: https://nearbypermits.com/boulder/address/3390-4th-st/