# Building permits at 520 Pearl St, Boulder, CO 520 Pearl St: demolition permitted Oct 24, 2025, a new building Mar 12. 14 permits on record here. The newest, Aug 14: Installation of new NFPA 13D fire sprinkler system with dedicated 1" UG and backflow. 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 14, 2026 | Fire systems | Installation of new NFPA 13D fire sprinkler system with dedicated 1" UG and backflow | $22,731 | [FIR2026-00269](https://nearbypermits.com/boulder/permit/FIR2026-00269/) | | Mar 12, 2026 | New building | New Construction: A two-story single-family residence of 2,828 finished square feet, with a deck of 233 square feet and a covered porch of 737 square feet. Associated with DEM2025-00087. Notes: A. See the separate Building Permit Application for a detached garage with an ADU for this site. B. The Hi | $1,000,000 | [BLD-SFD2025-00287](https://nearbypermits.com/boulder/permit/BLD-SFD2025-00287/) | | Mar 12, 2026 | Fence, wall or deck | To build a new Construction ADU consisting of 530 finished square feet, and a garage with 458 square feet. 3/31/26 Updates to resolve plan changes | $200,000 | [BLD-ACC2025-00065](https://nearbypermits.com/boulder/permit/BLD-ACC2025-00065/) | | Oct 24, 2025 | Demolition | Full structure deconstruction. Associated with BLD-SFD2025-00287. | Not listed | [DEM2025-00087](https://nearbypermits.com/boulder/permit/DEM2025-00087/) | | Nov 25, 2013 | Roofing | Tear-off & reroof of SFD, 14 squares of asphalt shingles on a pitches represented as 3/12 and 9/12. Shingles to comply with ASTM D225 or D3462 and D3161 Class F. Overlay not allowed - see section R907.3 (specifically item 4) of 2006 IRC. Additionally, 5 squares of flat roof will be reroofed with mod | $6,495 | [PMT2013-06676-RFG](https://nearbypermits.com/boulder/permit/PMT2013-06676-RFG/) | | May 18, 2012 | Fence, wall or deck | Construction of 5' - 6' high wood fence with minimum 1" between boards along west side of property behind house. Portion of fence facing Pearl Street shall be no more than 4' in height. Entire fence will be be stained to match house. Fence to be 80-feet total in length. | $990 | [PMT2012-02426-FEN](https://nearbypermits.com/boulder/permit/PMT2012-02426-FEN/) | | Mar 22, 2010 | Plumbing | 2100 sf addition (2-story) and 900 sf restoration to existing structure. 500 sf detached garage by separate permit. See HIS2007-00141 for Landmarks approval. | $8,000 | [PMT2007-01943-PLB](https://nearbypermits.com/boulder/permit/PMT2007-01943-PLB/) | | Mar 22, 2010 | Mechanical (HVAC) | 2100 sf addition (2-story) and 900 sf restoration to existing structure. 500 sf detached garage by separate permit. See HIS2007-00141 for Landmarks approval. | $15,000 | [PMT2007-01943-MEC](https://nearbypermits.com/boulder/permit/PMT2007-01943-MEC/) | | Mar 22, 2010 | Electrical | 2100 sf addition (2-story) and 900 sf restoration to existing structure. 500 sf detached garage by separate permit. See HIS2007-00141 for Landmarks approval. | $18,000 | [PMT2007-01943-ELE](https://nearbypermits.com/boulder/permit/PMT2007-01943-ELE/) | | Mar 22, 2010 | Addition | 2100 sf addition (2-story) and 900 sf restoration to existing structure. 500 sf detached garage by separate permit. See HIS2007-00141 for Landmarks approval. | $377,756 | [PMT2007-01943](https://nearbypermits.com/boulder/permit/PMT2007-01943/) | | Mar 15, 2010 | Fence, wall or deck | Construction of a 576 sf detached garage. | Not listed | [PMT2007-02020-FLD](https://nearbypermits.com/boulder/permit/PMT2007-02020-FLD/) | | Mar 15, 2010 | Electrical | Construction of a 576 sf detached garage. | $1,200 | [PMT2007-02020-ELE](https://nearbypermits.com/boulder/permit/PMT2007-02020-ELE/) | | Mar 15, 2010 | New building | Construction of a 576 sf detached garage. | $21,508 | [PMT2007-02020](https://nearbypermits.com/boulder/permit/PMT2007-02020/) | | Jan 16, 1990 | Mechanical (HVAC) | Mechanical reloc gas meter | $100 | [PMT1990-P7838-MEC](https://nearbypermits.com/boulder/permit/PMT1990-P7838-MEC/) | ## More on this street Other addresses on Pearl St with permits, nearest house number first: - [514 Pearl St](https://nearbypermits.com/boulder/address/514-pearl-st/): newest permit Sep 24, 2026 - [497 Pearl St](https://nearbypermits.com/boulder/address/497-pearl-st/): newest permit Apr 17, 2026 - [545 Pearl St](https://nearbypermits.com/boulder/address/545-pearl-st/): newest permit Dec 3, 2024 - [487 Pearl St](https://nearbypermits.com/boulder/address/487-pearl-st/): newest permit Apr 29, 2026 - [446 Pearl St](https://nearbypermits.com/boulder/address/446-pearl-st/): newest permit Dec 9, 2025 - [437 Pearl St](https://nearbypermits.com/boulder/address/437-pearl-st/): newest permit Oct 14, 2025 - [426 Pearl St](https://nearbypermits.com/boulder/address/426-pearl-st/): newest permit Jul 2, 2025 - [420 Pearl St B](https://nearbypermits.com/boulder/address/420-pearl-st-b/): newest permit Dec 1, 2025 - [620 Pearl St B](https://nearbypermits.com/boulder/address/620-pearl-st-b/): newest permit Jun 16, 2025 - [624 Pearl St](https://nearbypermits.com/boulder/address/624-pearl-st/): newest permit Aug 28, 2026 --- Source: Boulder Planning and Development Services permit data (https://www.arcgis.com/home/item.html?id=e3ff6248e4a547bcba31025d2c5c9fee). Checked 2026-10-08 13:44 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/520-pearl-st/