# Building permits at 4685 Ludlow St, Boulder, CO 14 permits on record here. The newest, Jan 15: Roof-mounted solar installation with inverter-battery 9.66 kW DC 11.5 kW AC. 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 | |---|---|---|---|---| | Jan 15, 2026 | Electrical | Roof-mounted solar installation with inverter-battery 9.66 kW DC 11.5 kW AC. | $34,868 | [ELE2026-00009](https://nearbypermits.com/boulder/permit/ELE2026-00009/) | | Jan 5, 2024 | Mechanical (HVAC) | Replacement 2.5 ton cold climate heat pump | $25,641 | [MEC2024-00010](https://nearbypermits.com/boulder/permit/MEC2024-00010/) | | Nov 7, 2023 | Electrical | *Voided for inactivity - no inspections within 180 days* Upgrade panel to 200A. | $4,750 | [ELE2023-01177](https://nearbypermits.com/boulder/permit/ELE2023-01177/) | | Nov 6, 2023 | Mechanical (HVAC) | Removal of existing unit and installation of new AO Smith 50 Gallon Heat Pump Water Heater Model# HPTS-50. Electric by Omega Electrical Services. | $4,137 | [MEC2023-01651](https://nearbypermits.com/boulder/permit/MEC2023-01651/) | | Jul 16, 2020 | Roofing | *Total tear off and reroof, dimensional shingles, 21.33 squares, 4:12 pitch. | $6,242 | [RFG2020-00517](https://nearbypermits.com/boulder/permit/RFG2020-00517/) | | Apr 23, 2015 | Mechanical (HVAC) | New Water Heater | $1,683 | [PMT2015-20117-MEC](https://nearbypermits.com/boulder/permit/PMT2015-20117-MEC/) | | Mar 6, 2003 | Mechanical (HVAC) | Install new gas logs in single-family residence. | $1,000 | [PMT2003-00803-MEC](https://nearbypermits.com/boulder/permit/PMT2003-00803-MEC/) | | Dec 12, 2002 | Mechanical (HVAC) | Replace forced air furnace in single-family residence. | $3,500 | [PMT2002-05294-MEC](https://nearbypermits.com/boulder/permit/PMT2002-05294-MEC/) | | Nov 25, 2002 | Mechanical (HVAC) | Gas piping extension to install a new stove with range hood; re-wiring/outlet installations within existing walls; insulation replacement within existing walls. Walls/windows are not being moved or replaced. Affected area is less than 500 s.f. | $315 | [PMT2002-05072-MEC](https://nearbypermits.com/boulder/permit/PMT2002-05072-MEC/) | | Nov 25, 2002 | Electrical | Gas piping extension to install a new stove with range hood; re-wiring/outlet installations within existing walls; insulation replacement within existing walls. Walls/windows are not being moved or replaced. Affected area is less than 500 s.f. | $1,000 | [PMT2002-05072-ELE](https://nearbypermits.com/boulder/permit/PMT2002-05072-ELE/) | | Nov 25, 2002 | Alteration or repair | Gas piping extension to install a new stove with range hood; re-wiring/outlet installations within existing walls; insulation replacement within existing walls. Walls/windows are not being moved or replaced. Affected area is less than 500 s.f. | $3,000 | [PMT2002-05072](https://nearbypermits.com/boulder/permit/PMT2002-05072/) | | Nov 12, 2002 | Electrical | Residential service change to 200 amp panel | $725 | [PMT2002-04878-ELE](https://nearbypermits.com/boulder/permit/PMT2002-04878-ELE/) | | Nov 9, 1999 | Mechanical (HVAC) | Install gas insert. | $831 | [PMT1999-09147-MEC](https://nearbypermits.com/boulder/permit/PMT1999-09147-MEC/) | | Sep 30, 1992 | Addition | Deck expansion 8 x 22 in rear/8 feet above grade the original general permit N | $2,000 | [PMT1992-04017](https://nearbypermits.com/boulder/permit/PMT1992-04017/) | ## More on this street Other addresses on Ludlow St with permits, nearest house number first: - [4675 Ludlow St](https://nearbypermits.com/boulder/address/4675-ludlow-st/): newest permit Sep 24, 2025 - [4650 Ludlow St](https://nearbypermits.com/boulder/address/4650-ludlow-st/): newest permit May 6, 2026 - [4640 Ludlow St](https://nearbypermits.com/boulder/address/4640-ludlow-st/): newest permit May 28, 2026 - [4735 Ludlow St](https://nearbypermits.com/boulder/address/4735-ludlow-st/): newest permit Mar 5, 2026 - [4620 Ludlow St](https://nearbypermits.com/boulder/address/4620-ludlow-st/): newest permit Oct 18, 2024 - [4760 Ludlow St](https://nearbypermits.com/boulder/address/4760-ludlow-st/): newest permit Feb 19, 2026 - [4785 Ludlow St](https://nearbypermits.com/boulder/address/4785-ludlow-st/): newest permit Jul 22, 2025 - [4475 Ludlow St](https://nearbypermits.com/boulder/address/4475-ludlow-st/): newest permit Dec 17, 2024 - [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 --- Source: Boulder Planning and Development Services permit data (https://www.arcgis.com/home/item.html?id=e3ff6248e4a547bcba31025d2c5c9fee). Checked 2026-10-08 01:51 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/4685-ludlow-st/