# Building permits at 4475 Ludlow St, Boulder, CO

Eight permits on record here. The newest, Dec 17, 2024: Replacement boiler - natural gas, 95% efficiency, 199,000 BTU input. 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 |
|---|---|---|---|---|
| Dec 17, 2024 | Mechanical (HVAC) | Replacement boiler - natural gas, 95% efficiency, 199,000 BTU input. | $13,711 | [MEC2024-01907](https://nearbypermits.com/boulder/permit/MEC2024-01907/) |
| Nov 14, 2013 | Electrical | Installation of a flush mount 2.29 kW photovoltaic system. Array to be parallel to roof plane, grid tied and remain below ridge, inside/below hips and rake edges and above eave. See engineer's letter and /or drawing(s) for specific information. Also electrical service change for 200 amp service. | $14,693 | [PMT2013-06426-ELE](https://nearbypermits.com/boulder/permit/PMT2013-06426-ELE/) |
| Oct 10, 2013 | Mechanical (HVAC) | Replace 40 gallon hot water heater in residence. | $1,901 | [PMT2013-05361-MEC](https://nearbypermits.com/boulder/permit/PMT2013-05361-MEC/) |
| Jun 26, 2013 | Mechanical (HVAC) | Evaporative cooler roof mounted (4800 cfm) for a single family residence and associated electrical and plumbing. | $5,425 | [PMT2013-02981-MEC](https://nearbypermits.com/boulder/permit/PMT2013-02981-MEC/) |
| Jun 26, 2013 | Electrical | Evaporative cooler roof mounted (4800 cfm) for a single family residence and associated electrical and plumbing. | $600 | [PMT2013-02981-ELE](https://nearbypermits.com/boulder/permit/PMT2013-02981-ELE/) |
| Apr 5, 2011 | Roofing | Total tear off and reroof of existing single family dwelling. Tamko Heritage 50-yr shingles, 22 squares, 4/12 pitch as indicated on permit application. | $4,842 | [PMT2011-01305-RFG](https://nearbypermits.com/boulder/permit/PMT2011-01305-RFG/) |
| Dec 21, 2009 | Mechanical (HVAC) | Replacement low pressure boiler. | $7,677 | [PMT2009-05157-MEC](https://nearbypermits.com/boulder/permit/PMT2009-05157-MEC/) |
| Aug 12, 2009 | Alteration or repair | Installation of egress window in basement including timber window well on east side of building. Window will be widened (3 ft) and lengthened (4 ft). | $1,500 | [PMT2009-03172](https://nearbypermits.com/boulder/permit/PMT2009-03172/) |

## More on this street

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

- [4425 Ludlow St](https://nearbypermits.com/boulder/address/4425-ludlow-st/): newest permit Mar 17, 2026
- [4380 Ludlow St](https://nearbypermits.com/boulder/address/4380-ludlow-st/): newest permit Dec 6, 2024
- [4360 Ludlow St](https://nearbypermits.com/boulder/address/4360-ludlow-st/): newest permit Jul 8, 2026
- [4350 Ludlow St](https://nearbypermits.com/boulder/address/4350-ludlow-st/): newest permit Apr 15, 2025
- [4345 Ludlow St](https://nearbypermits.com/boulder/address/4345-ludlow-st/): newest permit Nov 4, 2025
- [4620 Ludlow St](https://nearbypermits.com/boulder/address/4620-ludlow-st/): newest permit Oct 18, 2024
- [4640 Ludlow St](https://nearbypermits.com/boulder/address/4640-ludlow-st/): newest permit May 28, 2026
- [4650 Ludlow St](https://nearbypermits.com/boulder/address/4650-ludlow-st/): newest permit May 6, 2026
- [4675 Ludlow St](https://nearbypermits.com/boulder/address/4675-ludlow-st/): newest permit Sep 24, 2025
- [4685 Ludlow St](https://nearbypermits.com/boulder/address/4685-ludlow-st/): newest permit Jan 15, 2026

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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 22:12 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/4475-ludlow-st/