# Building permits at 735 20th St, Boulder, CO 19 permits on record here. The newest, Jun 16: Replace the existing Farenhyt IFP-25 panel with a new DMP XF6-100 panel. 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 | |---|---|---|---|---| | Jun 16, 2026 | Fire systems | Replace the existing Farenhyt IFP-25 panel with a new DMP XF6-100 panel. Replace the existing pull with a new DMP 850D and the existing smoke with a new System sensor 2W-B. Installa new Windland MTA-2 temp alert. | $1,600 | [FIR2026-00204](https://nearbypermits.com/boulder/permit/FIR2026-00204/) | | Jan 17, 2018 | Fire systems | FS - SOWL (Scope of Work Letter) GC is dropping kitchen ceiling heights currently protected with horizontal sidewall sprinkler heads. Sprinklers need to be relocated out of walls and changed to pendant sprinklers. 8 sprinklers for the entire building. See PMT2017-03794 for general building permit. | $761 | [PMT2018-00169-FIR](https://nearbypermits.com/boulder/permit/PMT2018-00169-FIR/) | | Jan 9, 2018 | Fire systems | FA - Replace existing system with addressable system. Continue to monitor flow and tamper; add notification throughout 8 existing dwelling units. See PMT2017-03794 for general building permit. | $11,562 | [PMT2017-05692-FIR](https://nearbypermits.com/boulder/permit/PMT2017-05692-FIR/) | | Dec 28, 2017 | Plumbing | Interior remodel with exterior improvements for an 8-unit multi-family building. Scope includes associated MEP. On same plan set and associated with PMT2017-03795 and PMT2017-03796. *Resubmittal 1/17/18 for plan updates to include ADA compliant walkways, water meter upgrade details and trash enclosu | $74,400 | [PMT2017-03794-PLB](https://nearbypermits.com/boulder/permit/PMT2017-03794-PLB/) | | Dec 28, 2017 | Mechanical (HVAC) | Interior remodel with exterior improvements for an 8-unit multi-family building. Scope includes associated MEP. On same plan set and associated with PMT2017-03795 and PMT2017-03796. *Resubmittal 1/17/18 for plan updates to include ADA compliant walkways, water meter upgrade details and trash enclosu | $60,150 | [PMT2017-03794-MEC](https://nearbypermits.com/boulder/permit/PMT2017-03794-MEC/) | | Dec 28, 2017 | Electrical | Interior remodel with exterior improvements for an 8-unit multi-family building. Scope includes associated MEP. On same plan set and associated with PMT2017-03795 and PMT2017-03796. *Resubmittal 1/17/18 for plan updates to include ADA compliant walkways, water meter upgrade details and trash enclosu | $106,240 | [PMT2017-03794-ELE](https://nearbypermits.com/boulder/permit/PMT2017-03794-ELE/) | | Dec 28, 2017 | Alteration or repair | Interior remodel with exterior improvements for an 8-unit multi-family building. Scope includes associated MEP. On same plan set and associated with PMT2017-03795 and PMT2017-03796. *Resubmittal 1/17/18 for plan updates to include ADA compliant walkways, water meter upgrade details and trash enclosu | $505,517 | [PMT2017-03794](https://nearbypermits.com/boulder/permit/PMT2017-03794/) | | Mar 7, 2016 | Mechanical (HVAC) | Replace forced air furnace in apartment unit #5 with 60,000 btu, 80% efficient unit. | $2,500 | [PMT2016-00957-MEC](https://nearbypermits.com/boulder/permit/PMT2016-00957-MEC/) | | Feb 11, 2016 | Plumbing | In-structure water pipe repair and replacement (only) of 8 shower valves. | $15,000 | [PMT2016-00591-PLB](https://nearbypermits.com/boulder/permit/PMT2016-00591-PLB/) | | Apr 20, 2012 | Mechanical (HVAC) | Addition of a 4'5" x 6'10" sprinkler riser room on the south side of the existing building. See PMT2012-01232 for fire line inspection and ROW fees. | $360 | [PMT2012-01056-MEC](https://nearbypermits.com/boulder/permit/PMT2012-01056-MEC/) | | Apr 20, 2012 | Electrical | Addition of a 4'5" x 6'10" sprinkler riser room on the south side of the existing building. See PMT2012-01232 for fire line inspection and ROW fees. | $2,098 | [PMT2012-01056-ELE](https://nearbypermits.com/boulder/permit/PMT2012-01056-ELE/) | | Apr 20, 2012 | Addition | Addition of a 4'5" x 6'10" sprinkler riser room on the south side of the existing building. See PMT2012-01232 for fire line inspection and ROW fees. | $24,000 | [PMT2012-01056](https://nearbypermits.com/boulder/permit/PMT2012-01056/) | | Apr 13, 2012 | Fire systems | New Sprinkler System For Multi-Family Dwelling | $13,104 | [PMT2012-01595-FIR](https://nearbypermits.com/boulder/permit/PMT2012-01595-FIR/) | | Apr 9, 2012 | Fire systems | New Radio Dialer and Fire Alarm Panel For Monitoring of New Sprinkler System In Multi-Family Dwelling | $3,200 | [PMT2012-01546-FIR](https://nearbypermits.com/boulder/permit/PMT2012-01546-FIR/) | | Oct 26, 2010 | Roofing | Remove existing shingles and re-roof multi-family building with dimensional shingles. 30 squares, roof pitch represented by contractor to be 5:12. | $10,960 | [PMT2010-04660-RFG](https://nearbypermits.com/boulder/permit/PMT2010-04660-RFG/) | | Apr 12, 2002 | Electrical | Service change to 450 amps, smoke detectors and furnace circuit in each unit. | $3,000 | [PMT2002-01377-ELE](https://nearbypermits.com/boulder/permit/PMT2002-01377-ELE/) | | Nov 17, 2000 | Mechanical (HVAC) | Replace a forced air furnace | $987 | [PMT2000-04577-MEC](https://nearbypermits.com/boulder/permit/PMT2000-04577-MEC/) | | Apr 29, 1997 | Alteration or repair | Fire damage repair the original general permit number is 972253. | $28,979 | [PMT1997-02253](https://nearbypermits.com/boulder/permit/PMT1997-02253/) | | Apr 7, 1997 | Roofing | Repair roof due to fire damage the original general permit number is 971947. | $10,943 | [PMT1997-01947](https://nearbypermits.com/boulder/permit/PMT1997-01947/) | ## More on this street Other addresses on 20th St with permits, nearest house number first: - [751 20th St](https://nearbypermits.com/boulder/address/751-20th-st/): newest permit Jul 30, 2026 - [864 20th St](https://nearbypermits.com/boulder/address/864-20th-st/): newest permit Jul 14, 2026 - [460 20th St](https://nearbypermits.com/boulder/address/460-20th-st/): newest permit Feb 20, 2026 - [320 20th St](https://nearbypermits.com/boulder/address/320-20th-st/): newest permit Jun 18, 2026 - [1513 20th St](https://nearbypermits.com/boulder/address/1513-20th-st/): newest permit Jan 8, 2026 - [2322 20th St](https://nearbypermits.com/boulder/address/2322-20th-st/): newest permit Aug 3, 2026 - [2800 20th St](https://nearbypermits.com/boulder/address/2800-20th-st/): newest permit Jun 25, 2025 - [2810 20th St](https://nearbypermits.com/boulder/address/2810-20th-st/): newest permit Jan 13, 2026 - [2831 20th St](https://nearbypermits.com/boulder/address/2831-20th-st/): newest permit Dec 18, 2024 - [2840 20th St](https://nearbypermits.com/boulder/address/2840-20th-st/): newest permit Jun 24, 2026 --- Source: Boulder Planning and Development Services permit data (https://www.arcgis.com/home/item.html?id=e3ff6248e4a547bcba31025d2c5c9fee). Checked 2026-10-06 22:06 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/ All 19 permits at this address: https://nearbypermits.com/boulder/address/735-20th-st/