# Building permits at 4745 Walnut St, Boulder, CO 38 permits on record here. The newest, Aug 11, 2025: Install RTU. 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 11, 2025 | Mechanical (HVAC) | Install RTU | $34,440 | [MEC2025-01212](https://nearbypermits.com/boulder/permit/MEC2025-01212/) | | Jun 17, 2025 | Mechanical (HVAC) | Replace RTU with like for like size | $19,674 | [MEC2025-00916](https://nearbypermits.com/boulder/permit/MEC2025-00916/) | | Jan 2, 2025 | Electrical | Adding a 120/240 volt panel to feed electrical testing equipment receptacles and cord drops | $30,000 | [ELE2024-01084](https://nearbypermits.com/boulder/permit/ELE2024-01084/) | | May 28, 2024 | Alteration or repair | Renovation of an existing 1st floor suite. The suite will be partitioned into multiple suites - a spec suite for spec office and a suite with fitness training use. Previous use of the space was an education training center b-occupancy for office use. The proposed uses are of equal or lessor hazard a | $236,531 | [BLD-NRE2024-00028](https://nearbypermits.com/boulder/permit/BLD-NRE2024-00028/) | | May 8, 2024 | Mechanical (HVAC) | Replace 2 existing (like for like) carrier 7.5 tons cooling, 224,000 btus heating, with new return air smoke detectors and economizers. Line voltage by electrician. | $44,468 | [MEC2024-00599](https://nearbypermits.com/boulder/permit/MEC2024-00599/) | | Feb 29, 2024 | Roofing | VOID-180 Days no activity Scope of work: Remove and dispose of the single ply membrane and built-up asphalt roof system to wood decking. Remove and dispose of the existing wall flashings. Remove and dispose of abandoned roof top penetrations. Install two layers of 2.9-inch poly iso roof insulation t | $244,222 | [RFG2024-00085](https://nearbypermits.com/boulder/permit/RFG2024-00085/) | | Nov 22, 2023 | Mechanical (HVAC) | VOID-180 Days no activity Replace current water heater with new 50 gallon water heater. Ray Viger Master plumber state license #180266 Plumbing contractor state license #2219 | $1,434 | [MEC2023-01759](https://nearbypermits.com/boulder/permit/MEC2023-01759/) | | Jan 6, 2023 | Sign | 55"x24" non-illuminated channel logo | $500 | [SGN2022-00103](https://nearbypermits.com/boulder/permit/SGN2022-00103/) | | Sep 8, 2022 | Alteration or repair | This project scope consists of the demolition of walls and fixtures within existing space. FLD2022-00065. | $32,728 | [BLD-NRE2022-00127](https://nearbypermits.com/boulder/permit/BLD-NRE2022-00127/) | | Sep 7, 2022 | Demolition | This project scope consists of the demolition of walls and fixtures within existing space. | $32,350 | [FLD2022-00065](https://nearbypermits.com/boulder/permit/FLD2022-00065/) | | Mar 15, 2022 | Mechanical (HVAC) | Commercial tenant improvement within the existing structure located at 4745 walnut street, boulder, co 80301. The space will operate as storage facility for convienence store items that will be distributed by door dash. Project scope includes minor modifications to create a break room for employees | $38,400 | [MEC2022-00179](https://nearbypermits.com/boulder/permit/MEC2022-00179/) | | Mar 15, 2022 | Electrical | Commercial tenant improvement within the existing structure located at 4745 walnut street, boulder, co 80301. The space will operate as storage facility for convienence store items that will be distributed by door dash. Project scope includes minor modifications to create a break room for employees | $53,700 | [ELE2022-00149](https://nearbypermits.com/boulder/permit/ELE2022-00149/) | | Mar 15, 2022 | Alteration or repair | Commercial tenant improvement within the existing structure located at 4745 walnut street, boulder, co 80301. The space will operate as storage facility for convienence store items that will be distributed by door dash. Project scope includes minor modifications to create a break room for employees | $449,457 | [BLD-NRE2022-00012](https://nearbypermits.com/boulder/permit/BLD-NRE2022-00012/) | | Mar 10, 2022 | Electrical | Commercial tenant improvement within the existing structure located at 4745 walnut street, boulder, co 80301. The space will operate as storage facility for convienence store items that will be distributed by door dash. Project scope includes minor modifications to create a break room for employees | $298,815 | [FLD2022-00007](https://nearbypermits.com/boulder/permit/FLD2022-00007/) | | Nov 30, 2017 | Electrical | Electrical scope associated with PMT2017-05270. Installation of new 60 AMP sub panel. Electrical hook up for new A/C system. | $1,750 | [PMT2017-05284-ELE](https://nearbypermits.com/boulder/permit/PMT2017-05284-ELE/) | | Nov 30, 2017 | Mechanical (HVAC) | Installation of a new split system RTU (17.5 SEER, 33k BTU) for technical office server room. Scope will require a new electrical service panel to be permitted under separate electrical permit. | $16,500 | [PMT2017-05270-MEC](https://nearbypermits.com/boulder/permit/PMT2017-05270-MEC/) | | Apr 7, 2004 | Plumbing | Tenant remodel for a commisary/warehouse space in Unit D. Eastpark 3 PUD allows warehouse uses per plan included with application. | $1,500 | [PMT2004-00400-PLB](https://nearbypermits.com/boulder/permit/PMT2004-00400-PLB/) | | Apr 7, 2004 | Mechanical (HVAC) | Tenant remodel for a commisary/warehouse space in Unit D. Eastpark 3 PUD allows warehouse uses per plan included with application. | $1,500 | [PMT2004-00400-MEC](https://nearbypermits.com/boulder/permit/PMT2004-00400-MEC/) | | Apr 7, 2004 | Electrical | Tenant remodel for a commisary/warehouse space in Unit D. Eastpark 3 PUD allows warehouse uses per plan included with application. | $3,000 | [PMT2004-00400-ELE](https://nearbypermits.com/boulder/permit/PMT2004-00400-ELE/) | | Apr 7, 2004 | Alteration or repair | Tenant remodel for a commisary/warehouse space in Unit D. Eastpark 3 PUD allows warehouse uses per plan included with application. | $15,000 | [PMT2004-00400](https://nearbypermits.com/boulder/permit/PMT2004-00400/) | | Sep 4, 2002 | Electrical | Tenant remodel | $8,000 | [PMT2002-03905-ELE](https://nearbypermits.com/boulder/permit/PMT2002-03905-ELE/) | | Sep 4, 2002 | Alteration or repair | Tenant remodel | $40,000 | [PMT2002-03905](https://nearbypermits.com/boulder/permit/PMT2002-03905/) | | Oct 19, 2000 | Alteration or repair | Interior tenant remodel. Change doors, add windows in existing door space to storage room. Add small wall section by sink counter to create separate room. | Not listed | [PMT2000-04314-FLD](https://nearbypermits.com/boulder/permit/PMT2000-04314-FLD/) | | Oct 19, 2000 | Electrical | Interior tenant remodel. Change doors, add windows in existing door space to storage room. Add small wall section by sink counter to create separate room. | $300 | [PMT2000-04314-ELE](https://nearbypermits.com/boulder/permit/PMT2000-04314-ELE/) | | Oct 19, 2000 | Alteration or repair | Interior tenant remodel. Change doors, add windows in existing door space to storage room. Add small wall section by sink counter to create separate room. | $5,000 | [PMT2000-04314](https://nearbypermits.com/boulder/permit/PMT2000-04314/) | | Dec 24, 1998 | Alteration or repair | Tenant finish remodel the original general permit number is 988824. | $30,000 | [PMT1998-08824](https://nearbypermits.com/boulder/permit/PMT1998-08824/) | | Aug 31, 1998 | Alteration or repair | Tenant finish - bathroom addition only the original general permit number is 9 | $20,000 | [PMT1998-04942](https://nearbypermits.com/boulder/permit/PMT1998-04942/) | | Jun 9, 1998 | Alteration or repair | Install shower & partition walls the original general permit number is 983710. | $2,000 | [PMT1998-03710](https://nearbypermits.com/boulder/permit/PMT1998-03710/) | | Apr 27, 1998 | Alteration or repair | Tenant finish the original general permit number is 982467. | $20,000 | [PMT1998-02467](https://nearbypermits.com/boulder/permit/PMT1998-02467/) | | Oct 28, 1993 | Alteration or repair | Separation walls for work areas the original general permit number is 938128. | $10,000 | [PMT1993-08128](https://nearbypermits.com/boulder/permit/PMT1993-08128/) | | Aug 7, 1990 | Alteration or repair | Ten fnsh. The original general permit number is r2109. | $6,000 | [PMT1990-R2109](https://nearbypermits.com/boulder/permit/PMT1990-R2109/) | | Mar 28, 1990 | Electrical | Electrical HVAC WIRING | $400 | [PMT1990-P9276-ELE](https://nearbypermits.com/boulder/permit/PMT1990-P9276-ELE/) | | Mar 26, 1990 | Mechanical (HVAC) | Mechanical HVAC | $3,750 | [PMT1990-P9218-MEC](https://nearbypermits.com/boulder/permit/PMT1990-P9218-MEC/) | | Apr 25, 1989 | Sign | Sign non elec. Sign | Not listed | [PMT1989-P2063-SGN](https://nearbypermits.com/boulder/permit/PMT1989-P2063-SGN/) | | Mar 10, 1989 | Electrical | Electrical WIRING SWITCH | $600 | [PMT1989-P1103-ELE](https://nearbypermits.com/boulder/permit/PMT1989-P1103-ELE/) | | Mar 7, 1989 | Alteration or repair | Tenant imprvmt. The original general permit number is p0907. | $8,000 | [PMT1989-P0907](https://nearbypermits.com/boulder/permit/PMT1989-P0907/) | | Jan 30, 1989 | Alteration or repair | Tenant imprvmt. The original general permit number is p0398. | $35,000 | [PMT1989-P0398](https://nearbypermits.com/boulder/permit/PMT1989-P0398/) | | Jan 17, 1989 | Demolition | Demolition demo non load brg walls | Not listed | [PMT1989-P0167-DEM](https://nearbypermits.com/boulder/permit/PMT1989-P0167-DEM/) | ## More on this street Other addresses on Walnut St with permits, nearest house number first: - [4730 Walnut St](https://nearbypermits.com/boulder/address/4730-walnut-st/): newest permit May 21, 2026 - [4760 Walnut St](https://nearbypermits.com/boulder/address/4760-walnut-st/): newest permit Nov 19, 2024 - [4765 Walnut St](https://nearbypermits.com/boulder/address/4765-walnut-st/): newest permit Sep 24, 2025 - [4775 Walnut St](https://nearbypermits.com/boulder/address/4775-walnut-st/): newest permit Mar 17, 2026 - [3750 Walnut St](https://nearbypermits.com/boulder/address/3750-walnut-st/): newest permit Dec 20, 2024 - [3720 Walnut St](https://nearbypermits.com/boulder/address/3720-walnut-st/): newest permit Sep 15, 2026 - [3333 Walnut St](https://nearbypermits.com/boulder/address/3333-walnut-st/): newest permit Nov 17, 2025 - [3300 Walnut St](https://nearbypermits.com/boulder/address/3300-walnut-st/): newest permit Jun 2, 2025 - [3250 Walnut St](https://nearbypermits.com/boulder/address/3250-walnut-st/): newest permit May 16, 2025 - [3201 Walnut St](https://nearbypermits.com/boulder/address/3201-walnut-st/): newest permit Nov 18, 2025 --- Source: Boulder Planning and Development Services permit data (https://www.arcgis.com/home/item.html?id=e3ff6248e4a547bcba31025d2c5c9fee). Checked 2026-10-06 20:37 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/ All 38 permits at this address: https://nearbypermits.com/boulder/address/4745-walnut-st/