# Building permits at 503 Northstar Ct, Boulder, CO 14 permits on record here. The newest, Aug 24: 1-1 6K mini split install Condenser #MUZ-FX06NLHZ Indoor wall unit #MSZ-FX06NL Electrical components: 15A. 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 | |---|---|---|---|---| | Aug 24, 2026 | Mechanical (HVAC) | 1-1 6K mini split install Condenser #MUZ-FX06NLHZ Indoor wall unit #MSZ-FX06NL Electrical components: 15A 240V OU Circuit GFCI service outlet PLEASE NOTE: APPLICABLE ONLY TO SYSTEMS WITH FUEL BURNING APPLIANCES: All new plastic glued vents for fuel burning appliances must undergo pressure testing. T | $9,721 | [MEC2026-01530](https://nearbypermits.com/boulder/permit/MEC2026-01530/) | | Jul 1, 2026 | Electrical | To Install 2 Powerwall + to existing Solar - mounted on exterior | $8,000 | [ELE2026-00273](https://nearbypermits.com/boulder/permit/ELE2026-00273/) | | Oct 1, 2025 | Electrical | To install 7.38kw roof-mounted solar with 2 powerwall 3's. *11/5/2025 Revision to change modules from 415's to 410's.* | $10,800 | [ELE2025-00636](https://nearbypermits.com/boulder/permit/ELE2025-00636/) | | Aug 28, 2023 | Electrical | Re-inspection of 40.5kWh Tesla Powerwall Energy Storage System under original permit number ELE2020-00653. | $7,200 | [ELE2023-00833](https://nearbypermits.com/boulder/permit/ELE2023-00833/) | | Jun 11, 2020 | Electrical | *Install 40.5kWh powerwall backup energy storage system. There is existing solar PV on residence.*Resubmittal received on 08/17/2020. | $22,600 | [ELE2020-00653](https://nearbypermits.com/boulder/permit/ELE2020-00653/) | | Apr 17, 2019 | Electrical | *10.44 kW Rooftop, Flush Mounted, Utility Interconnected PV System | $20,880 | [ELE2019-00249](https://nearbypermits.com/boulder/permit/ELE2019-00249/) | | Jul 17, 2014 | Plumbing | Remodel to SFDD. Scope to include remodel of kitchen, living room, reframe of living room roof with addition of two dormers, addition of west facing windows, removal of existing fireplace, and addition of new gas fireplace. Existing spiral stair will be removed and stairway between main level and up | $2,000 | [PMT2014-02610-PLB](https://nearbypermits.com/boulder/permit/PMT2014-02610-PLB/) | | Jul 17, 2014 | Mechanical (HVAC) | Remodel to SFDD. Scope to include remodel of kitchen, living room, reframe of living room roof with addition of two dormers, addition of west facing windows, removal of existing fireplace, and addition of new gas fireplace. Existing spiral stair will be removed and stairway between main level and up | $8,000 | [PMT2014-02610-MEC](https://nearbypermits.com/boulder/permit/PMT2014-02610-MEC/) | | Jul 17, 2014 | Electrical | Remodel to SFDD. Scope to include remodel of kitchen, living room, reframe of living room roof with addition of two dormers, addition of west facing windows, removal of existing fireplace, and addition of new gas fireplace. Existing spiral stair will be removed and stairway between main level and up | $4,000 | [PMT2014-02610-ELE](https://nearbypermits.com/boulder/permit/PMT2014-02610-ELE/) | | Jul 17, 2014 | Alteration or repair | Remodel to SFDD. Scope to include remodel of kitchen, living room, reframe of living room roof with addition of two dormers, addition of west facing windows, removal of existing fireplace, and addition of new gas fireplace. Existing spiral stair will be removed and stairway between main level and up | $166,000 | [PMT2014-02610](https://nearbypermits.com/boulder/permit/PMT2014-02610/) | | Oct 3, 1990 | Mechanical (HVAC) | Mechanical GAS LOGS | $406 | [PMT1990-R3632-MEC](https://nearbypermits.com/boulder/permit/PMT1990-R3632-MEC/) | | Jul 30, 1990 | Mechanical (HVAC) | Mechanical WTR HTR | $800 | [PMT1990-R2006-MEC](https://nearbypermits.com/boulder/permit/PMT1990-R2006-MEC/) | | Jun 5, 1989 | Fence, wall or deck | Fence replace 5 foot fence | $500 | [PMT1989-P2999-FEN](https://nearbypermits.com/boulder/permit/PMT1989-P2999-FEN/) | | Jun 17, 1988 | Addition | Hot tub struct. The original general permit number is m9071. | $4,000 | [PMT1988-M9071](https://nearbypermits.com/boulder/permit/PMT1988-M9071/) | ## More on this street Other addresses on Northstar Ct with permits, nearest house number first: - [505 Northstar Ct](https://nearbypermits.com/boulder/address/505-northstar-ct/): newest permit Mar 31, 2026 - [510 Northstar Ct](https://nearbypermits.com/boulder/address/510-northstar-ct/): newest permit Jul 23, 2026 - [515 Northstar Ct](https://nearbypermits.com/boulder/address/515-northstar-ct/): newest permit Nov 5, 2024 - [525 Northstar Ct](https://nearbypermits.com/boulder/address/525-northstar-ct/): newest permit May 19, 2026 - [535 Northstar Ct](https://nearbypermits.com/boulder/address/535-northstar-ct/): newest permit Apr 1, 2026 - [560 Northstar Ct](https://nearbypermits.com/boulder/address/560-northstar-ct/): newest permit Aug 21, 2026 - [575 Northstar Ct](https://nearbypermits.com/boulder/address/575-northstar-ct/): newest permit Jan 22, 2025 - [635 Northstar Ct](https://nearbypermits.com/boulder/address/635-northstar-ct/): newest permit Jul 21, 2026 - [645 Northstar Ct](https://nearbypermits.com/boulder/address/645-northstar-ct/): newest permit Feb 19, 2026 - [685 Northstar Ct](https://nearbypermits.com/boulder/address/685-northstar-ct/): newest permit Sep 22, 2025 --- Source: Boulder Planning and Development Services permit data (https://www.arcgis.com/home/item.html?id=e3ff6248e4a547bcba31025d2c5c9fee). Checked 2026-10-07 02:28 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/503-northstar-ct/