# Building permits at 3100 Carbon Pl, Boulder, CO 16 permits on record here. The newest, Oct 31, 2025: All Structures must be permitted separately Total tear-off & reroof of SFD. 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 | |---|---|---|---|---| | Oct 31, 2025 | Roofing | All Structures must be permitted separately Total tear-off & reroof of SFD, 72 squares of dimensional shingles on a pitch represented as 5/12. All roof materials shall be installed per manufacturer?s specs. All roof covering materials shall be listed as Class A as tested in accordance with UL Standa | $50,836 | [RFG2025-00867](https://nearbypermits.com/boulder/permit/RFG2025-00867/) | | May 14, 2021 | Alteration or repair | Unit# R206 - Modification to the Steel Yards Site Review approval (SI-98-5) to permit the conversion of a service industrial space in Building R to a residential unit increasing the number of residential units in the building to seven units and the total for the Steel Yards development to 93 residen | Not listed | [BLD-NRE2021-00028](https://nearbypermits.com/boulder/permit/BLD-NRE2021-00028/) | | Mar 25, 2004 | Fire systems | Fire Alarm System - Small Tenant remodel | $300 | [PMT2004-01035-FIR](https://nearbypermits.com/boulder/permit/PMT2004-01035-FIR/) | | Jun 23, 2003 | Plumbing | Tenant finish for new tenat Wish Garden Herbs | $1,000 | [PMT2003-02364-PLB](https://nearbypermits.com/boulder/permit/PMT2003-02364-PLB/) | | Jun 23, 2003 | Electrical | Tenant finish for new tenat Wish Garden Herbs | $1,600 | [PMT2003-02364-ELE](https://nearbypermits.com/boulder/permit/PMT2003-02364-ELE/) | | Jun 23, 2003 | Alteration or repair | Tenant finish for new tenat Wish Garden Herbs | $2,600 | [PMT2003-02364](https://nearbypermits.com/boulder/permit/PMT2003-02364/) | | May 23, 2003 | Mechanical (HVAC) | Interior tenant finish (Suite #100) to create a new tenant space for construction equipment storage and related service industrial activities. Mechanical scope is duct work only. | $1,500 | [PMT2003-01851-MEC](https://nearbypermits.com/boulder/permit/PMT2003-01851-MEC/) | | May 23, 2003 | Electrical | Interior tenant finish (Suite #100) to create a new tenant space for construction equipment storage and related service industrial activities. Mechanical scope is duct work only. | $2,500 | [PMT2003-01851-ELE](https://nearbypermits.com/boulder/permit/PMT2003-01851-ELE/) | | May 23, 2003 | Alteration or repair | Interior tenant finish (Suite #100) to create a new tenant space for construction equipment storage and related service industrial activities. Mechanical scope is duct work only. | $15,000 | [PMT2003-01851](https://nearbypermits.com/boulder/permit/PMT2003-01851/) | | Jan 13, 2003 | Fire systems | Fire Sprinkler System - Bldg. R | $7,000 | [PMT2003-00121-FIR](https://nearbypermits.com/boulder/permit/PMT2003-00121-FIR/) | | Dec 9, 2002 | Fire systems | Fire Alarm system - Bldg. R | $3,500 | [PMT2002-04543-FIR](https://nearbypermits.com/boulder/permit/PMT2002-04543-FIR/) | | Jul 16, 2002 | Electrical | Temporary construction power for Buildings "R" & "S". | Not listed | [PMT2002-02989-ELE](https://nearbypermits.com/boulder/permit/PMT2002-02989-ELE/) | | Jul 16, 2001 | Plumbing | New mixed use building. Non-residential uses on first floor and mezzanine level. Five dwelling units and two non-residential tenant spaces on uppermost level. Five 2 car carports and two 2 car garages at lower level - Building R- Steelyards Site Review | $65,000 | [PMT2000-04865-PLB](https://nearbypermits.com/boulder/permit/PMT2000-04865-PLB/) | | Jul 16, 2001 | Mechanical (HVAC) | New mixed use building. Non-residential uses on first floor and mezzanine level. Five dwelling units and two non-residential tenant spaces on uppermost level. Five 2 car carports and two 2 car garages at lower level - Building R- Steelyards Site Review | $65,000 | [PMT2000-04865-MEC](https://nearbypermits.com/boulder/permit/PMT2000-04865-MEC/) | | Jul 16, 2001 | Electrical | New mixed use building. Non-residential uses on first floor and mezzanine level. Five dwelling units and two non-residential tenant spaces on uppermost level. Five 2 car carports and two 2 car garages at lower level - Building R- Steelyards Site Review | $65,000 | [PMT2000-04865-ELE](https://nearbypermits.com/boulder/permit/PMT2000-04865-ELE/) | | Jul 16, 2001 | New building | New mixed use building. Non-residential uses on first floor and mezzanine level. Five dwelling units and two non-residential tenant spaces on uppermost level. Five 2 car carports and two 2 car garages at lower level - Building R- Steelyards Site Review | $600,000 | [PMT2000-04865](https://nearbypermits.com/boulder/permit/PMT2000-04865/) | ## Zoning requests nearby We don't list zoning cases for Boulder yet. Look them up on the city's Board of Zoning Adjustment page: https://bouldercolorado.gov/government/board-commission/board-zoning-adjustment ## More on this street Other addresses on Carbon Pl with permits, nearest house number first: - [3200 Carbon Pl](https://nearbypermits.com/boulder/address/3200-carbon-pl/): newest permit Nov 12, 2025 --- Source: Boulder Planning and Development Services permit data (https://www.arcgis.com/home/item.html?id=e3ff6248e4a547bcba31025d2c5c9fee). Checked 2026-10-08 14:14 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/ All 16 permits at this address: https://nearbypermits.com/boulder/address/3100-carbon-pl/