# Building permits at 1401 Walnut St, Boulder, CO

105 permits on record here. The newest, Aug 7: Replace water heater. 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 7, 2026 | Mechanical (HVAC) | Replace water heater. PLEASE NOTE: APPLICABLE ONLY TO SYSTEMS WITH FUEL BURNING APPLIANCES: All new plastic glued vents for fuel burning appliances must undergo pressure testing. To facilitate the inspection process, please provide photographic evidence of the pressure test directly to the assigned  | $2,573 | [MEC2026-01379](https://nearbypermits.com/boulder/permit/MEC2026-01379/) |
| Nov 17, 2025 | Electrical | VOID- 180 Days no activity Mainline reconnect and new 120V circuit for elevator modernization. | $5,000 | [ELE2025-01165](https://nearbypermits.com/boulder/permit/ELE2025-01165/) |
| Oct 7, 2025 | Fire systems | Due to an elevator modernization in an existing sprinkled building with an existing addressable fire alarm system: Addition of three new relays and two input modules, Addition of 5 new lobby smoke detectors. (Fati) | $4,100 | [FIR2025-00350](https://nearbypermits.com/boulder/permit/FIR2025-00350/) |
| Jan 8, 2018 | Electrical | Installation of a 7.2 kW dual-port wall-mounted electric vehicle (EV) charging station on the second level of the garage at the RTD Downtown Bus Station. Bollards will be installed for protection. | $3,500 | [PMT2017-05401-ELE](https://nearbypermits.com/boulder/permit/PMT2017-05401-ELE/) |
| Aug 30, 2017 | Fire systems | FA - Minor changes to alarm system to accomodate TI work No change to FACP. All work approved for this permit is on 4th floor. See PMT 2017-02960 for general building permit. | $708 | [PMT2017-03659-FIR](https://nearbypermits.com/boulder/permit/PMT2017-03659-FIR/) |
| Aug 28, 2017 | Plumbing | Interior tenant remodel of Suite 400 to include new suite entry door, demolition of some interior partition walls, creation of new offices and break area, approximately 500 sf. Reuse existing light fixtures, mechanical equipment. Includes associated minor MEP for HVAC ductwork relocation, switches a | $4,000 | [PMT2017-02960-PLB](https://nearbypermits.com/boulder/permit/PMT2017-02960-PLB/) |
| Aug 28, 2017 | Mechanical (HVAC) | Interior tenant remodel of Suite 400 to include new suite entry door, demolition of some interior partition walls, creation of new offices and break area, approximately 500 sf. Reuse existing light fixtures, mechanical equipment. Includes associated minor MEP for HVAC ductwork relocation, switches a | $1,000 | [PMT2017-02960-MEC](https://nearbypermits.com/boulder/permit/PMT2017-02960-MEC/) |
| Aug 28, 2017 | Electrical | Interior tenant remodel of Suite 400 to include new suite entry door, demolition of some interior partition walls, creation of new offices and break area, approximately 500 sf. Reuse existing light fixtures, mechanical equipment. Includes associated minor MEP for HVAC ductwork relocation, switches a | $5,000 | [PMT2017-02960-ELE](https://nearbypermits.com/boulder/permit/PMT2017-02960-ELE/) |
| Aug 28, 2017 | Alteration or repair | Interior tenant remodel of Suite 400 to include new suite entry door, demolition of some interior partition walls, creation of new offices and break area, approximately 500 sf. Reuse existing light fixtures, mechanical equipment. Includes associated minor MEP for HVAC ductwork relocation, switches a | $42,168 | [PMT2017-02960](https://nearbypermits.com/boulder/permit/PMT2017-02960/) |
| Jun 1, 2017 | Mechanical (HVAC) | Interior tenant remodel of portions of the 4th and 5th floors of an existing office building. Scope includes approximately 3500 sf (for work on both floors, excluding areas of finish-only work) and includes new partition walls for offices and open work areas.Also includes associated electrical and m | $10,500 | [PMT2017-01729-MEC](https://nearbypermits.com/boulder/permit/PMT2017-01729-MEC/) |
| Jun 1, 2017 | Electrical | Interior tenant remodel of portions of the 4th and 5th floors of an existing office building. Scope includes approximately 3500 sf (for work on both floors, excluding areas of finish-only work) and includes new partition walls for offices and open work areas.Also includes associated electrical and m | $50,500 | [PMT2017-01729-ELE](https://nearbypermits.com/boulder/permit/PMT2017-01729-ELE/) |
| Jun 1, 2017 | Alteration or repair | Interior tenant remodel of portions of the 4th and 5th floors of an existing office building. Scope includes approximately 3500 sf (for work on both floors, excluding areas of finish-only work) and includes new partition walls for offices and open work areas.Also includes associated electrical and m | $325,000 | [PMT2017-01729](https://nearbypermits.com/boulder/permit/PMT2017-01729/) |
| May 30, 2017 | Fire systems | FA - Notification appliances for 5th and partial 4th floor TI. No changes to stair entry pull stations or basement design. See PMT 2017-01729 for general building permit. Madison house. | $1,801 | [PMT2017-02269-FIR](https://nearbypermits.com/boulder/permit/PMT2017-02269-FIR/) |
| Apr 27, 2017 | Demolition | Interior non-structural demolition only on 4th and 5th floors of an existing office building in preparation for tenant finish under PMT2017-01729. | Not listed | [PMT2017-01731-DEM](https://nearbypermits.com/boulder/permit/PMT2017-01731-DEM/) |
| Feb 20, 2015 | Sign | Sign. Two new non-illuminated wall signs for "SendGrid". | $2,400 | [PMT2014-01619-SGN](https://nearbypermits.com/boulder/permit/PMT2014-01619-SGN/) |
| Nov 7, 2014 | Fire systems | Fs - tf for retail space | $2,194 | [PMT2014-05071-FIR](https://nearbypermits.com/boulder/permit/PMT2014-05071-FIR/) |
| Nov 3, 2014 | Plumbing | Interior tenant remodel to expand existing commercial/retail space into adjacent unit (also existing commercial/retail space). Scope also incldues remodel of current unit and all associated MEPs. | $5,000 | [PMT2014-04578-PLB](https://nearbypermits.com/boulder/permit/PMT2014-04578-PLB/) |
| Nov 3, 2014 | Mechanical (HVAC) | Interior tenant remodel to expand existing commercial/retail space into adjacent unit (also existing commercial/retail space). Scope also incldues remodel of current unit and all associated MEPs. | $10,750 | [PMT2014-04578-MEC](https://nearbypermits.com/boulder/permit/PMT2014-04578-MEC/) |
| Nov 3, 2014 | Electrical | Interior tenant remodel to expand existing commercial/retail space into adjacent unit (also existing commercial/retail space). Scope also incldues remodel of current unit and all associated MEPs. | $17,500 | [PMT2014-04578-ELE](https://nearbypermits.com/boulder/permit/PMT2014-04578-ELE/) |
| Nov 3, 2014 | Alteration or repair | Interior tenant remodel to expand existing commercial/retail space into adjacent unit (also existing commercial/retail space). Scope also incldues remodel of current unit and all associated MEPs. | $105,000 | [PMT2014-04578](https://nearbypermits.com/boulder/permit/PMT2014-04578/) |
| Apr 25, 2014 | Fire systems | Fs - tf for rtd | $897 | [PMT2014-01719-FIR](https://nearbypermits.com/boulder/permit/PMT2014-01719-FIR/) |
| Mar 31, 2014 | Fire systems | Fs - tf for office | $2,605 | [PMT2014-01401-FIR](https://nearbypermits.com/boulder/permit/PMT2014-01401-FIR/) |
| Mar 24, 2014 | Mechanical (HVAC) | Tenant remodel of existing office Suite 200. Remodel to include partitions, finishes, lighting, electrical, HVAC registers, and alteration of existing breakroom kitchenette to comply with accessibilty requirements. | $5,000 | [PMT2014-01147-MEC](https://nearbypermits.com/boulder/permit/PMT2014-01147-MEC/) |
| Mar 24, 2014 | Electrical | Tenant remodel of existing office Suite 200. Remodel to include partitions, finishes, lighting, electrical, HVAC registers, and alteration of existing breakroom kitchenette to comply with accessibilty requirements. | $15,000 | [PMT2014-01147-ELE](https://nearbypermits.com/boulder/permit/PMT2014-01147-ELE/) |
| Mar 24, 2014 | Alteration or repair | Tenant remodel of existing office Suite 200. Remodel to include partitions, finishes, lighting, electrical, HVAC registers, and alteration of existing breakroom kitchenette to comply with accessibilty requirements. | $72,337 | [PMT2014-01147](https://nearbypermits.com/boulder/permit/PMT2014-01147/) |
| Mar 24, 2014 | Plumbing | Interor remodel to first-floor core of existing five-story office building. Work to include remodel of existing restroom, new finishes and fixtures for entry and elevator lobbies, corridor area, and core soffits. | $10,000 | [PMT2014-00950-PLB](https://nearbypermits.com/boulder/permit/PMT2014-00950-PLB/) |
| Mar 24, 2014 | Mechanical (HVAC) | Interor remodel to first-floor core of existing five-story office building. Work to include remodel of existing restroom, new finishes and fixtures for entry and elevator lobbies, corridor area, and core soffits. | $15,000 | [PMT2014-00950-MEC](https://nearbypermits.com/boulder/permit/PMT2014-00950-MEC/) |
| Mar 24, 2014 | Electrical | Interor remodel to first-floor core of existing five-story office building. Work to include remodel of existing restroom, new finishes and fixtures for entry and elevator lobbies, corridor area, and core soffits. | $13,000 | [PMT2014-00950-ELE](https://nearbypermits.com/boulder/permit/PMT2014-00950-ELE/) |
| Mar 24, 2014 | Alteration or repair | Interor remodel to first-floor core of existing five-story office building. Work to include remodel of existing restroom, new finishes and fixtures for entry and elevator lobbies, corridor area, and core soffits. | $70,000 | [PMT2014-00950](https://nearbypermits.com/boulder/permit/PMT2014-00950/) |
| Mar 24, 2014 | Plumbing | Tenant remodel of existing office suite. Remodel to include reconfiguring partition walls, lighting, electrical, and HVAC registers, Includes relocation and replacement of existing breakroom sink and dishwasher. | $3,000 | [PMT2014-00682-PLB](https://nearbypermits.com/boulder/permit/PMT2014-00682-PLB/) |
| Mar 24, 2014 | Mechanical (HVAC) | Tenant remodel of existing office suite. Remodel to include reconfiguring partition walls, lighting, electrical, and HVAC registers, Includes relocation and replacement of existing breakroom sink and dishwasher. | $3,000 | [PMT2014-00682-MEC](https://nearbypermits.com/boulder/permit/PMT2014-00682-MEC/) |
| Mar 24, 2014 | Electrical | Tenant remodel of existing office suite. Remodel to include reconfiguring partition walls, lighting, electrical, and HVAC registers, Includes relocation and replacement of existing breakroom sink and dishwasher. | $16,000 | [PMT2014-00682-ELE](https://nearbypermits.com/boulder/permit/PMT2014-00682-ELE/) |
| Mar 24, 2014 | Alteration or repair | Tenant remodel of existing office suite. Remodel to include reconfiguring partition walls, lighting, electrical, and HVAC registers, Includes relocation and replacement of existing breakroom sink and dishwasher. | $74,349 | [PMT2014-00682](https://nearbypermits.com/boulder/permit/PMT2014-00682/) |
| Mar 13, 2014 | Fire systems | Fa - notification in basement | $2,690 | [PMT2014-01068-FIR](https://nearbypermits.com/boulder/permit/PMT2014-01068-FIR/) |
| Mar 11, 2014 | Fire systems | Fa - tf for office | $5,500 | [PMT2014-01047-FIR](https://nearbypermits.com/boulder/permit/PMT2014-01047-FIR/) |
| Feb 14, 2014 | Plumbing | Tenant remodel finish of Floors 3, 4, and 5 of commercial office space for email infrastructure and delivery service business. Work on building core under another permit. | $3,150 | [PMT2014-00518-PLB](https://nearbypermits.com/boulder/permit/PMT2014-00518-PLB/) |
| Feb 14, 2014 | Mechanical (HVAC) | Tenant remodel finish of Floors 3, 4, and 5 of commercial office space for email infrastructure and delivery service business. Work on building core under another permit. | $79,000 | [PMT2014-00518-MEC](https://nearbypermits.com/boulder/permit/PMT2014-00518-MEC/) |
| Feb 14, 2014 | Electrical | Tenant remodel finish of Floors 3, 4, and 5 of commercial office space for email infrastructure and delivery service business. Work on building core under another permit. | $100,000 | [PMT2014-00518-ELE](https://nearbypermits.com/boulder/permit/PMT2014-00518-ELE/) |
| Feb 14, 2014 | Alteration or repair | Tenant remodel finish of Floors 3, 4, and 5 of commercial office space for email infrastructure and delivery service business. Work on building core under another permit. | $457,814 | [PMT2014-00518](https://nearbypermits.com/boulder/permit/PMT2014-00518/) |
| Feb 4, 2014 | Plumbing | Remodel interior basement core of existing 5 story office building. Work to include new restrooms, new finishes and fixtures for elevator lobby, corridor areas, and core soffits plus demising walls for proposed office suites. | $5,500 | [PMT2014-00090-PLB](https://nearbypermits.com/boulder/permit/PMT2014-00090-PLB/) |
| Feb 4, 2014 | Mechanical (HVAC) | Remodel interior basement core of existing 5 story office building. Work to include new restrooms, new finishes and fixtures for elevator lobby, corridor areas, and core soffits plus demising walls for proposed office suites. | $2,500 | [PMT2014-00090-MEC](https://nearbypermits.com/boulder/permit/PMT2014-00090-MEC/) |
| Feb 4, 2014 | Electrical | Remodel interior basement core of existing 5 story office building. Work to include new restrooms, new finishes and fixtures for elevator lobby, corridor areas, and core soffits plus demising walls for proposed office suites. | $12,500 | [PMT2014-00090-ELE](https://nearbypermits.com/boulder/permit/PMT2014-00090-ELE/) |
| Feb 4, 2014 | Alteration or repair | Remodel interior basement core of existing 5 story office building. Work to include new restrooms, new finishes and fixtures for elevator lobby, corridor areas, and core soffits plus demising walls for proposed office suites. | $348,790 | [PMT2014-00090](https://nearbypermits.com/boulder/permit/PMT2014-00090/) |
| Jan 17, 2014 | Fire systems | Fa - tf for office building | $7,447 | [PMT2014-00196-FIR](https://nearbypermits.com/boulder/permit/PMT2014-00196-FIR/) |
| Jan 8, 2014 | Mechanical (HVAC) | Interior, non-structural remodel of existing office space. Total of 250SF of affected area, scope of work includes associated mechanical and electrical. | $4,000 | [PMT2013-06814-MEC](https://nearbypermits.com/boulder/permit/PMT2013-06814-MEC/) |
| Jan 8, 2014 | Electrical | Interior, non-structural remodel of existing office space. Total of 250SF of affected area, scope of work includes associated mechanical and electrical. | $9,500 | [PMT2013-06814-ELE](https://nearbypermits.com/boulder/permit/PMT2013-06814-ELE/) |
| Jan 8, 2014 | Alteration or repair | Interior, non-structural remodel of existing office space. Total of 250SF of affected area, scope of work includes associated mechanical and electrical. | $22,863 | [PMT2013-06814](https://nearbypermits.com/boulder/permit/PMT2013-06814/) |
| Dec 4, 2013 | Plumbing | Remodel interior core on floors 2-5 of existing 5 story office building. Work to include new finishes and fixtures for elevator lobbies, bathrooms, corridor areas, and core soffits. | $44,866 | [PMT2013-06263-PLB](https://nearbypermits.com/boulder/permit/PMT2013-06263-PLB/) |
| Dec 4, 2013 | Mechanical (HVAC) | Remodel interior core on floors 2-5 of existing 5 story office building. Work to include new finishes and fixtures for elevator lobbies, bathrooms, corridor areas, and core soffits. | $8,000 | [PMT2013-06263-MEC](https://nearbypermits.com/boulder/permit/PMT2013-06263-MEC/) |
| Dec 4, 2013 | Electrical | Remodel interior core on floors 2-5 of existing 5 story office building. Work to include new finishes and fixtures for elevator lobbies, bathrooms, corridor areas, and core soffits. | $62,244 | [PMT2013-06263-ELE](https://nearbypermits.com/boulder/permit/PMT2013-06263-ELE/) |
| Dec 4, 2013 | Alteration or repair | Remodel interior core on floors 2-5 of existing 5 story office building. Work to include new finishes and fixtures for elevator lobbies, bathrooms, corridor areas, and core soffits. | $529,582 | [PMT2013-06263](https://nearbypermits.com/boulder/permit/PMT2013-06263/) |
| Nov 21, 2013 | Alteration or repair | Remove and replace all exterior window systems on floors 1 - 5. | $192,045 | [PMT2013-05886](https://nearbypermits.com/boulder/permit/PMT2013-05886/) |
| Oct 9, 2013 | Demolition | Interior non-structural demolition of interior finishes, non-bearing partition walls, and restrooms on floors 2 through 5 of an existing structure building in 1980. | Not listed | [PMT2013-05328-DEM](https://nearbypermits.com/boulder/permit/PMT2013-05328-DEM/) |
| Oct 27, 2010 | Mechanical (HVAC) | Mechanical Permit - For replace of fan coil for comfort cooling system at convenience store 24,000 BTU. | $1,007 | [PMT2010-04684-MEC](https://nearbypermits.com/boulder/permit/PMT2010-04684-MEC/) |
| Sep 2, 2010 | Electrical | Removal of existing non-structural walls in office spaces for Orbotix. | $500 | [PMT2010-03757-ELE](https://nearbypermits.com/boulder/permit/PMT2010-03757-ELE/) |
| Sep 2, 2010 | Alteration or repair | Removal of existing non-structural walls in office spaces for Orbotix. | $2,250 | [PMT2010-03757](https://nearbypermits.com/boulder/permit/PMT2010-03757/) |
| Nov 16, 2009 | Fire systems | Tennant Finish Fire Alarm and Pannel Replacement | $4,500 | [PMT2009-04601-FIR](https://nearbypermits.com/boulder/permit/PMT2009-04601-FIR/) |
| Oct 15, 2009 | Plumbing | Tenant remodel for 175 square feet of office space. To include removal of offices and relocation of break room. Fixture relocates only. | $1,000 | [PMT2009-04102-PLB](https://nearbypermits.com/boulder/permit/PMT2009-04102-PLB/) |
| Oct 15, 2009 | Electrical | Tenant remodel for 175 square feet of office space. To include removal of offices and relocation of break room. Fixture relocates only. | $1,900 | [PMT2009-04102-ELE](https://nearbypermits.com/boulder/permit/PMT2009-04102-ELE/) |
| Oct 15, 2009 | Alteration or repair | Tenant remodel for 175 square feet of office space. To include removal of offices and relocation of break room. Fixture relocates only. | $12,600 | [PMT2009-04102](https://nearbypermits.com/boulder/permit/PMT2009-04102/) |
| Oct 12, 2009 | Demolition | Interior non-structural demolition of existing professional office space. | Not listed | [PMT2009-04103-DEM](https://nearbypermits.com/boulder/permit/PMT2009-04103-DEM/) |
| Nov 21, 2008 | Fire systems | Tennant Finish Sprinkler Continental Bldg. | $500 | [PMT2008-04946-FIR](https://nearbypermits.com/boulder/permit/PMT2008-04946-FIR/) |
| Apr 2, 2008 | Plumbing | Interior remodel of first floor bathrooms (removal of one urinal); remodel 2nd, 3rd & 4th floor hallway corridors, installation of new lighting fixtures. | $1,250 | [PMT2008-00863-PLB](https://nearbypermits.com/boulder/permit/PMT2008-00863-PLB/) |
| Apr 2, 2008 | Mechanical (HVAC) | Interior remodel of first floor bathrooms (removal of one urinal); remodel 2nd, 3rd & 4th floor hallway corridors, installation of new lighting fixtures. | $650 | [PMT2008-00863-MEC](https://nearbypermits.com/boulder/permit/PMT2008-00863-MEC/) |
| Apr 2, 2008 | Electrical | Interior remodel of first floor bathrooms (removal of one urinal); remodel 2nd, 3rd & 4th floor hallway corridors, installation of new lighting fixtures. | $3,600 | [PMT2008-00863-ELE](https://nearbypermits.com/boulder/permit/PMT2008-00863-ELE/) |
| Apr 2, 2008 | Alteration or repair | Interior remodel of first floor bathrooms (removal of one urinal); remodel 2nd, 3rd & 4th floor hallway corridors, installation of new lighting fixtures. | $25,000 | [PMT2008-00863](https://nearbypermits.com/boulder/permit/PMT2008-00863/) |
| Apr 9, 2007 | Roofing | Total tear-off & reroof of 62 squares, EPDM ballasted roof system. | $31,204 | [PMT2007-01263-RFG](https://nearbypermits.com/boulder/permit/PMT2007-01263-RFG/) |
| Mar 23, 2007 | Mechanical (HVAC) | Tenant remodel on fifth floor (suite 501) of office building. Remodel to include rearrangement of office walls, creation of conference room. Includes associated electrical and mechanical work. | $1,500 | [PMT2007-00788-MEC](https://nearbypermits.com/boulder/permit/PMT2007-00788-MEC/) |
| Mar 23, 2007 | Electrical | Tenant remodel on fifth floor (suite 501) of office building. Remodel to include rearrangement of office walls, creation of conference room. Includes associated electrical and mechanical work. | $3,800 | [PMT2007-00788-ELE](https://nearbypermits.com/boulder/permit/PMT2007-00788-ELE/) |
| Mar 23, 2007 | Alteration or repair | Tenant remodel on fifth floor (suite 501) of office building. Remodel to include rearrangement of office walls, creation of conference room. Includes associated electrical and mechanical work. | $41,000 | [PMT2007-00788](https://nearbypermits.com/boulder/permit/PMT2007-00788/) |
| Dec 8, 2005 | Plumbing | Interior remodel of 512 sf office space. Includes kitchen remodel and addition\relocatioin of electrical outlets. | $300 | [PMT2005-04640-PLB](https://nearbypermits.com/boulder/permit/PMT2005-04640-PLB/) |
| Dec 8, 2005 | Electrical | Interior remodel of 512 sf office space. Includes kitchen remodel and addition\relocatioin of electrical outlets. | $1,700 | [PMT2005-04640-ELE](https://nearbypermits.com/boulder/permit/PMT2005-04640-ELE/) |
| Dec 8, 2005 | Alteration or repair | Interior remodel of 512 sf office space. Includes kitchen remodel and addition\relocatioin of electrical outlets. | $17,000 | [PMT2005-04640](https://nearbypermits.com/boulder/permit/PMT2005-04640/) |
| Mar 16, 2005 | Electrical | Elec. permit for updating lighting in lobby | $8,500 | [PMT2005-00871-ELE](https://nearbypermits.com/boulder/permit/PMT2005-00871-ELE/) |
| Mar 24, 2003 | Fire systems | Fire Alarm System | $1,500 | [PMT2003-01005-FIR](https://nearbypermits.com/boulder/permit/PMT2003-01005-FIR/) |
| Mar 10, 2003 | Plumbing | 2600 square foot tenant remodel on the fourth floor. | $1,400 | [PMT2003-00589-PLB](https://nearbypermits.com/boulder/permit/PMT2003-00589-PLB/) |
| Mar 10, 2003 | Mechanical (HVAC) | 2600 square foot tenant remodel on the fourth floor. | $3,100 | [PMT2003-00589-MEC](https://nearbypermits.com/boulder/permit/PMT2003-00589-MEC/) |
| Mar 10, 2003 | Electrical | 2600 square foot tenant remodel on the fourth floor. | $14,500 | [PMT2003-00589-ELE](https://nearbypermits.com/boulder/permit/PMT2003-00589-ELE/) |
| Mar 10, 2003 | Alteration or repair | 2600 square foot tenant remodel on the fourth floor. | $50,000 | [PMT2003-00589](https://nearbypermits.com/boulder/permit/PMT2003-00589/) |
| Feb 18, 2003 | Demolition | Interior non-structural demolition on the fourth floor. See PMT 2003-00589 for build back plans. | Not listed | [PMT2003-00590-DEM](https://nearbypermits.com/boulder/permit/PMT2003-00590-DEM/) |
| Sep 20, 2002 | Fire systems | Fire Alarm system - 3rd floor | $750 | [PMT2002-04102-FIR](https://nearbypermits.com/boulder/permit/PMT2002-04102-FIR/) |
| Sep 20, 2002 | Fire systems | Fire alarm System - 2nd floor | $750 | [PMT2002-04101-FIR](https://nearbypermits.com/boulder/permit/PMT2002-04101-FIR/) |
| Jul 23, 2002 | Plumbing | Tenant remodel of suite 301 | $1,100 | [PMT2002-03076-PLB](https://nearbypermits.com/boulder/permit/PMT2002-03076-PLB/) |
| Jul 23, 2002 | Mechanical (HVAC) | Tenant remodel of suite 301 | $5,950 | [PMT2002-03076-MEC](https://nearbypermits.com/boulder/permit/PMT2002-03076-MEC/) |
| Jul 23, 2002 | Electrical | Tenant remodel of suite 301 | $7,250 | [PMT2002-03076-ELE](https://nearbypermits.com/boulder/permit/PMT2002-03076-ELE/) |
| Jul 23, 2002 | Alteration or repair | Tenant remodel of suite 301 | $38,050 | [PMT2002-03076](https://nearbypermits.com/boulder/permit/PMT2002-03076/) |
| Jul 23, 2002 | Plumbing | Tenant remodel of suite 202 | $1,290 | [PMT2002-03075-PLB](https://nearbypermits.com/boulder/permit/PMT2002-03075-PLB/) |
| Jul 23, 2002 | Mechanical (HVAC) | Tenant remodel of suite 202 | $3,700 | [PMT2002-03075-MEC](https://nearbypermits.com/boulder/permit/PMT2002-03075-MEC/) |
| Jul 23, 2002 | Electrical | Tenant remodel of suite 202 | $4,650 | [PMT2002-03075-ELE](https://nearbypermits.com/boulder/permit/PMT2002-03075-ELE/) |
| Jul 23, 2002 | Alteration or repair | Tenant remodel of suite 202 | $28,040 | [PMT2002-03075](https://nearbypermits.com/boulder/permit/PMT2002-03075/) |
| Sep 25, 2000 | Fire systems | Fire Sprinkler System | $1,320 | [PMT2000-03790-FIR](https://nearbypermits.com/boulder/permit/PMT2000-03790-FIR/) |
| Sep 6, 2000 | Plumbing | Tenant finish | $2,000 | [PMT2000-03281-PLB](https://nearbypermits.com/boulder/permit/PMT2000-03281-PLB/) |
| Sep 6, 2000 | Mechanical (HVAC) | Tenant finish | $10,000 | [PMT2000-03281-MEC](https://nearbypermits.com/boulder/permit/PMT2000-03281-MEC/) |
| Sep 6, 2000 | Electrical | Tenant finish | $17,000 | [PMT2000-03281-ELE](https://nearbypermits.com/boulder/permit/PMT2000-03281-ELE/) |
| Sep 6, 2000 | Other | Tenant finish | $59,300 | [PMT2000-03281](https://nearbypermits.com/boulder/permit/PMT2000-03281/) |
| May 1, 1998 | Alteration or repair | Tenant finish remodel the original general permit number is 982718. | $62,000 | [PMT1998-02718](https://nearbypermits.com/boulder/permit/PMT1998-02718/) |
| Sep 6, 1995 | Alteration or repair | Remodel tenant finish 2nd floor east the original general permit number is 956 | $16,000 | [PMT1995-06809](https://nearbypermits.com/boulder/permit/PMT1995-06809/) |
| Apr 27, 1994 | Alteration or repair | Office remodel no structural, no exit changes the original general permit numb | $6,300 | [PMT1994-02895](https://nearbypermits.com/boulder/permit/PMT1994-02895/) |
| Jun 26, 1990 | Sign | Sign temp banner | Not listed | [PMT1990-R1199-SGN](https://nearbypermits.com/boulder/permit/PMT1990-R1199-SGN/) |
| Mar 30, 1990 | Fire systems | Fire alter fire sprklr sys | Not listed | [PMT1990-P9350-FIR](https://nearbypermits.com/boulder/permit/PMT1990-P9350-FIR/) |
| Mar 29, 1990 | Sign | Sign signs | $900 | [PMT1990-P9015-SGN](https://nearbypermits.com/boulder/permit/PMT1990-P9015-SGN/) |
| Mar 19, 1990 | Mechanical (HVAC) | Mechanical A/C UNIT | $3,800 | [PMT1990-P9072-MEC](https://nearbypermits.com/boulder/permit/PMT1990-P9072-MEC/) |
| Mar 13, 1990 | Alteration or repair | Ten fnsh. The original general permit number is p8755. | $26,000 | [PMT1990-P8755](https://nearbypermits.com/boulder/permit/PMT1990-P8755/) |
| Aug 4, 1989 | Sign | Sign non elec | Not listed | [PMT1989-P4384-SGN](https://nearbypermits.com/boulder/permit/PMT1989-P4384-SGN/) |
| Mar 21, 1988 | Alteration or repair | Tenant remodel. The original general permit number is n7069. | $5,500 | [PMT1988-N7069](https://nearbypermits.com/boulder/permit/PMT1988-N7069/) |

## More on this street

Other addresses on Walnut St with permits, nearest house number first:

- [1375 Walnut St](https://nearbypermits.com/boulder/address/1375-walnut-st/): newest permit May 7, 2026
- [1360 Walnut St 103](https://nearbypermits.com/boulder/address/1360-walnut-st-103/): newest permit Sep 4, 2026
- [1470 Walnut St](https://nearbypermits.com/boulder/address/1470-walnut-st/): newest permit Mar 20, 2026
- [1301 Walnut St](https://nearbypermits.com/boulder/address/1301-walnut-st/): newest permit Jul 1, 2026
- [1300 Walnut St](https://nearbypermits.com/boulder/address/1300-walnut-st/): newest permit Jul 25, 2025
- [1545 Walnut St](https://nearbypermits.com/boulder/address/1545-walnut-st/): newest permit Jun 9, 2025
- [1603 Walnut St](https://nearbypermits.com/boulder/address/1603-walnut-st/): newest permit Jul 20, 2026
- [1620 Walnut St](https://nearbypermits.com/boulder/address/1620-walnut-st/): newest permit May 13, 2025
- [1175 Walnut St](https://nearbypermits.com/boulder/address/1175-walnut-st/): newest permit Oct 31, 2025
- [1634 Walnut St C](https://nearbypermits.com/boulder/address/1634-walnut-st-c/): newest permit Sep 24, 2026

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Source: Boulder Planning and Development Services permit data (https://www.arcgis.com/home/item.html?id=e3ff6248e4a547bcba31025d2c5c9fee). Checked 2026-10-07 12:02 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/

All 105 permits at this address: https://nearbypermits.com/boulder/address/1401-walnut-st/