# Building permits at 541 Maxwell Ave, Boulder, CO

Five permits on record here. The newest, Apr 11, 2025: New single-zone Mitsubishi heat pump system - 9,000 BTU/cooling capacity. 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 11, 2025 | Mechanical (HVAC) | New single-zone Mitsubishi heat pump system - 9,000 BTU/cooling capacity, 29.8 SEER, 9,600 high heat, 10.9 HSPF. New electrical circuit for condenser. Per HIS2025-00083, new heat pump system to be installed at side location minimally visible from street, behind existing unit, as shown on application | $9,298 | [MEC2025-00558](https://nearbypermits.com/boulder/permit/MEC2025-00558/) |
| Apr 16, 2024 | Mechanical (HVAC) | Replacement furnace 97% AFUE 70,000 BTU- New air conditioner 15.4 SEER2 - 12.5 EER2. New electrical circuit for the condenser. Replace water heater 50 gallon like for like. | $15,934 | [MEC2024-00496](https://nearbypermits.com/boulder/permit/MEC2024-00496/) |
| Feb 4, 2014 | Mechanical (HVAC) | Replacement forced-air furnace (please also reference HIS2014-00019). | $1,450 | [PMT2014-00555-MEC](https://nearbypermits.com/boulder/permit/PMT2014-00555-MEC/) |
| Sep 3, 2003 | Electrical | Construction of new detached, two-car garage, 576 square feet in size. | $300 | [PMT2003-03253-ELE](https://nearbypermits.com/boulder/permit/PMT2003-03253-ELE/) |
| Sep 3, 2003 | New building | Construction of new detached, two-car garage, 576 square feet in size. | $17,000 | [PMT2003-03253](https://nearbypermits.com/boulder/permit/PMT2003-03253/) |

## More on this street

Other addresses on Maxwell Ave with permits, nearest house number first:

- [536 Maxwell Ave](https://nearbypermits.com/boulder/address/536-maxwell-ave/): newest permit Apr 17, 2025
- [527 Maxwell Ave](https://nearbypermits.com/boulder/address/527-maxwell-ave/): newest permit Apr 11, 2025
- [516 Maxwell Ave](https://nearbypermits.com/boulder/address/516-maxwell-ave/): newest permit Jun 11, 2026
- [510 Maxwell Ave](https://nearbypermits.com/boulder/address/510-maxwell-ave/): newest permit Jun 9, 2026
- [611 Maxwell Ave](https://nearbypermits.com/boulder/address/611-maxwell-ave/): newest permit Feb 18, 2026
- [621 Maxwell Ave](https://nearbypermits.com/boulder/address/621-maxwell-ave/): newest permit May 12, 2025
- [624 Maxwell Ave](https://nearbypermits.com/boulder/address/624-maxwell-ave/): newest permit May 23, 2025
- [457 Maxwell Ave 2](https://nearbypermits.com/boulder/address/457-maxwell-ave-2/): newest permit Dec 9, 2025
- [628 Maxwell Ave](https://nearbypermits.com/boulder/address/628-maxwell-ave/): newest permit Dec 5, 2025
- [435 Maxwell Ave](https://nearbypermits.com/boulder/address/435-maxwell-ave/): newest permit Apr 23, 2025

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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 23:35 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/

All 5 permits at this address: https://nearbypermits.com/boulder/address/541-maxwell-ave/