# Building permits at 3450 Mitchell Ln, Boulder, CO

115 permits on record here. The newest, Feb 17: Ventilation upgrade affecting the first floor machine shop. 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 |
|---|---|---|---|---|
| Feb 17, 2026 | Mechanical (HVAC) | Ventilation upgrade affecting the first floor machine shop, offices, and adjacent support spaces. In response to a preliminary industrial hygiene study that indicated the need for better exhaust methods and additional ventilation in the shop. PLEASE NOTE: APPLICABLE ONLY TO SYSTEMS WITH FUEL BURNING | $320,000 | [MEC2025-01374](https://nearbypermits.com/boulder/permit/MEC2025-01374/) |
| Feb 9, 2026 | Fire systems | Full Fire Alarm Replacement in buildings FL1, FL2, & FL3. (FAN) | $1,159,916 | [FIR2025-00504](https://nearbypermits.com/boulder/permit/FIR2025-00504/) |
| Oct 29, 2025 | Alteration or repair | Replacing 2 existing skylights with like in kind and adding 2 Tubular Skylights for FL 3 (Building 3) on a existing non-residential building. This project consists of 3 total buildings. We were advised by Andrea Hill that we must submit each building permit individually. Therefore, we request the sa | $247,457 | [BLD-NRE2025-00164](https://nearbypermits.com/boulder/permit/BLD-NRE2025-00164/) |
| Oct 29, 2025 | Alteration or repair | Replacing 4 existing skylights with like in kind for FL 2 (Building 2) on a existing non-residential building. This project consists of 3 total buildings. We were advised by Andrea Hill that we must submit each building permit individually. Therefore, we request the same reviewer for all 3 permit ap | $456,167 | [BLD-NRE2025-00163](https://nearbypermits.com/boulder/permit/BLD-NRE2025-00163/) |
| Oct 29, 2025 | Alteration or repair | Replacing 5 existing skylights with like in kind and one motorized shade replacement for FL 1 (Building 1) on a existing non-residential building. This project consists of 3 total buildings. We were advised by Andrea Hill that we must submit each building permit individually. Therefore, we request t | $594,067 | [BLD-NRE2025-00162](https://nearbypermits.com/boulder/permit/BLD-NRE2025-00162/) |
| Oct 14, 2025 | Electrical | Additional Electrical Circuits for Fire Alarm System | $10,000 | [ELE2025-01023](https://nearbypermits.com/boulder/permit/ELE2025-01023/) |
| Jan 7, 2025 | Roofing | VOID- Over 180 Days No Activity Building FL2 Total tear-off & reroof, 376 squares of EPDM on a pitch represented as | $602,830 | [RFG2025-00003](https://nearbypermits.com/boulder/permit/RFG2025-00003/) |
| Jan 7, 2025 | Roofing | VOID-Inspections not completed within 180 days This is for Building FL3. Total tear-off & reroof, 214 squares of EPDM on a pitch represented as | $367,510 | [RFG2025-00002](https://nearbypermits.com/boulder/permit/RFG2025-00002/) |
| Nov 15, 2024 | Roofing | VOID-180 Days no activity All structures on the property must be permitted separately Total tear-off & reroof of Commercial Property, 485 squares of EPDM on a pitch represented as | $795,850 | [RFG2024-00728](https://nearbypermits.com/boulder/permit/RFG2024-00728/) |
| Aug 8, 2024 | Fire systems | Install a new AES 7707P-88 radio to monitor the existing Siemens XLS fire alarm system.(FAR) | $1,100 | [FIR2024-00324](https://nearbypermits.com/boulder/permit/FIR2024-00324/) |
| Mar 14, 2022 | Fire systems | Install a new AES 7707P-88 radio to monitor the existing Notifier 5000 fire alarm system. Foothills lab #3 (far) | $1,100 | [FIR2022-00072](https://nearbypermits.com/boulder/permit/FIR2022-00072/) |
| Mar 14, 2022 | Fire systems | Install a new AES 7707P-88 radio to monitor the existing Notifier 5000 fire alarm system. Foothills lab #1 (far) | $1,100 | [FIR2022-00071](https://nearbypermits.com/boulder/permit/FIR2022-00071/) |
| Jan 31, 2020 | New building | Build a new 285 sq. ft. bike shelter, small amount of new paving for concrete pad (3' x 21'), UCAR (property owner) has removed the existing bike parking for this improved bike parking shelter. Associated with ADR2018-00231 and ADR2018-00281. | $38,367 | [BLD-ACC2018-00131](https://nearbypermits.com/boulder/permit/BLD-ACC2018-00131/) |
| Dec 3, 2018 | Electrical | Replacement of one automatic transfer switch with three new automatic transfer switches (3). All interior work, no exterior work in scope of work. | $90,000 | [ELE2018-00904](https://nearbypermits.com/boulder/permit/ELE2018-00904/) |
| Nov 27, 2018 | Electrical | Installation of a new, above ground, generator on north side of existing building FL2 on the UCAR site. Five (5) 1 1/4" PVC conduits will be installed from the generator to the building requiring excavation and trenching. See minor modification approval, ADR2018-00255. | $77,197 | [ELE2018-00993](https://nearbypermits.com/boulder/permit/ELE2018-00993/) |
| Jun 1, 2017 | Fire systems | FA - Installation of an AES 7788F Radio to monitor the existing Notifier 5000 Alarm System. | $600 | [PMT2017-02166-FIR](https://nearbypermits.com/boulder/permit/PMT2017-02166-FIR/) |
| Dec 2, 2016 | Plumbing | Relocate and install replacement grease interceptor, to be located outside of building, on the North side of building FL2 per approved plan set. | $145,750 | [PMT2016-05410-PLB](https://nearbypermits.com/boulder/permit/PMT2016-05410-PLB/) |
| Dec 3, 2014 | Fire systems | Fs - es - tf for office area | $1,544 | [PMT2014-05373-FIR](https://nearbypermits.com/boulder/permit/PMT2014-05373-FIR/) |
| Dec 1, 2014 | Mechanical (HVAC) | Interior, non-structural reconfiguration of existing professional office space (500SF). Specifically referencing area inclduing rooms 2060, 2051, and 2052. Includes associated mechanical and electrical work. Fire sprinkler changes under separate permit. | $6,300 | [PMT2014-05035-MEC](https://nearbypermits.com/boulder/permit/PMT2014-05035-MEC/) |
| Dec 1, 2014 | Electrical | Interior, non-structural reconfiguration of existing professional office space (500SF). Specifically referencing area inclduing rooms 2060, 2051, and 2052. Includes associated mechanical and electrical work. Fire sprinkler changes under separate permit. | $15,222 | [PMT2014-05035-ELE](https://nearbypermits.com/boulder/permit/PMT2014-05035-ELE/) |
| Dec 1, 2014 | Alteration or repair | Interior, non-structural reconfiguration of existing professional office space (500SF). Specifically referencing area inclduing rooms 2060, 2051, and 2052. Includes associated mechanical and electrical work. Fire sprinkler changes under separate permit. | $45,077 | [PMT2014-05035](https://nearbypermits.com/boulder/permit/PMT2014-05035/) |
| May 2, 2011 | Mechanical (HVAC) | Addition of three office spaces and splitting one room into two rooms | $5,000 | [PMT2011-01525-MEC](https://nearbypermits.com/boulder/permit/PMT2011-01525-MEC/) |
| May 2, 2011 | Electrical | Addition of three office spaces and splitting one room into two rooms | $4,000 | [PMT2011-01525-ELE](https://nearbypermits.com/boulder/permit/PMT2011-01525-ELE/) |
| May 2, 2011 | Alteration or repair | Addition of three office spaces and splitting one room into two rooms | $46,252 | [PMT2011-01525](https://nearbypermits.com/boulder/permit/PMT2011-01525/) |
| Apr 21, 2011 | Fire systems | Tennant Finish Sprinkler For NCAR Relocation of 4 Sprinkler Heads and Addition of One Sprinkler Head for Tennant Remodel | $1,200 | [PMT2011-01362-FIR](https://nearbypermits.com/boulder/permit/PMT2011-01362-FIR/) |
| Jun 8, 2010 | Fire systems | Tennant Finish Sprinkler NCAR Bldg. 3 Third Floor | $800 | [PMT2010-02159-FIR](https://nearbypermits.com/boulder/permit/PMT2010-02159-FIR/) |
| May 20, 2010 | Mechanical (HVAC) | Tenanr remodel of 360 square feet to include removal of existing roof top unit, modification of existing duckwork, removal and replacement of drop ceiling, replacement of lighting fixtures. | $8,435 | [PMT2010-01938-MEC](https://nearbypermits.com/boulder/permit/PMT2010-01938-MEC/) |
| May 20, 2010 | Electrical | Tenanr remodel of 360 square feet to include removal of existing roof top unit, modification of existing duckwork, removal and replacement of drop ceiling, replacement of lighting fixtures. | $3,788 | [PMT2010-01938-ELE](https://nearbypermits.com/boulder/permit/PMT2010-01938-ELE/) |
| May 20, 2010 | Alteration or repair | Tenanr remodel of 360 square feet to include removal of existing roof top unit, modification of existing duckwork, removal and replacement of drop ceiling, replacement of lighting fixtures. | $24,790 | [PMT2010-01938](https://nearbypermits.com/boulder/permit/PMT2010-01938/) |
| Aug 26, 2009 | Fire systems | Tennant Finish Fire Alarm | $1,500 | [PMT2009-03373-FIR](https://nearbypermits.com/boulder/permit/PMT2009-03373-FIR/) |
| Aug 19, 2009 | Plumbing | Tenant remodel of 924 sf to create four offices and a meeting area out of existing floor area (area/room 3094). Reconfigured ductwork & HVAC diffusers, relocated lighting. | $1,500 | [PMT2009-02981-PLB](https://nearbypermits.com/boulder/permit/PMT2009-02981-PLB/) |
| Aug 19, 2009 | Mechanical (HVAC) | Tenant remodel of 924 sf to create four offices and a meeting area out of existing floor area (area/room 3094). Reconfigured ductwork & HVAC diffusers, relocated lighting. | $7,000 | [PMT2009-02981-MEC](https://nearbypermits.com/boulder/permit/PMT2009-02981-MEC/) |
| Aug 19, 2009 | Electrical | Tenant remodel of 924 sf to create four offices and a meeting area out of existing floor area (area/room 3094). Reconfigured ductwork & HVAC diffusers, relocated lighting. | $7,000 | [PMT2009-02981-ELE](https://nearbypermits.com/boulder/permit/PMT2009-02981-ELE/) |
| Aug 19, 2009 | Alteration or repair | Tenant remodel of 924 sf to create four offices and a meeting area out of existing floor area (area/room 3094). Reconfigured ductwork & HVAC diffusers, relocated lighting. | $63,419 | [PMT2009-02981](https://nearbypermits.com/boulder/permit/PMT2009-02981/) |
| Aug 18, 2009 | Fire systems | Scope of Work Letter for NCAR | $245 | [PMT2009-03241-FIR](https://nearbypermits.com/boulder/permit/PMT2009-03241-FIR/) |
| Aug 11, 2009 | Demolition | Non-structural demolition permit for work proposed through PMT2009-02981 | Not listed | [PMT2009-03155-DEM](https://nearbypermits.com/boulder/permit/PMT2009-03155-DEM/) |
| Jul 21, 2006 | Mechanical (HVAC) | Interior remodel of 2nd and 3rd floor including removal and installation of walls for offices. Project includes associated electrical and mechanical. | $9,000 | [PMT2006-02824-MEC](https://nearbypermits.com/boulder/permit/PMT2006-02824-MEC/) |
| Jul 21, 2006 | Electrical | Interior remodel of 2nd and 3rd floor including removal and installation of walls for offices. Project includes associated electrical and mechanical. | $12,200 | [PMT2006-02824-ELE](https://nearbypermits.com/boulder/permit/PMT2006-02824-ELE/) |
| Jul 21, 2006 | Alteration or repair | Interior remodel of 2nd and 3rd floor including removal and installation of walls for offices. Project includes associated electrical and mechanical. | $61,000 | [PMT2006-02824](https://nearbypermits.com/boulder/permit/PMT2006-02824/) |
| Jul 18, 2006 | Fire systems | Fire Sprinkler System - relocates | $1,750 | [PMT2006-02854-FIR](https://nearbypermits.com/boulder/permit/PMT2006-02854-FIR/) |
| Jan 12, 2006 | Fire systems | UCAR-New Fire Alarm system for Building FL-0 | $51,000 | [PMT2006-00071-FIR](https://nearbypermits.com/boulder/permit/PMT2006-00071-FIR/) |
| Dec 2, 2005 | Fire systems | Fire Sprinkler System changes Building #0- This is for the sprinkler heads located under the bridge etc. | $19,756 | [PMT2005-04568-FIR](https://nearbypermits.com/boulder/permit/PMT2005-04568-FIR/) |
| Nov 16, 2005 | Plumbing | Computer room buildout in basement for future tennant - UCAR | $5,000 | [PMT2005-03960-PLB](https://nearbypermits.com/boulder/permit/PMT2005-03960-PLB/) |
| Nov 16, 2005 | Mechanical (HVAC) | Computer room buildout in basement for future tennant - UCAR | $85,000 | [PMT2005-03960-MEC](https://nearbypermits.com/boulder/permit/PMT2005-03960-MEC/) |
| Nov 16, 2005 | Electrical | Computer room buildout in basement for future tennant - UCAR | $80,000 | [PMT2005-03960-ELE](https://nearbypermits.com/boulder/permit/PMT2005-03960-ELE/) |
| Nov 16, 2005 | Alteration or repair | Computer room buildout in basement for future tennant - UCAR | $48,539 | [PMT2005-03960](https://nearbypermits.com/boulder/permit/PMT2005-03960/) |
| May 18, 2005 | Elevator | 2 new elevators, 1 freight 4000lb. capacity; one passenger 2500 lb. capacity, 4 stops each. | $198,000 | [PMT2005-01383](https://nearbypermits.com/boulder/permit/PMT2005-01383/) |
| Apr 11, 2005 | Fire systems | Fire sprinkler system - New Building | $110,000 | [PMT2005-01104-FIR](https://nearbypermits.com/boulder/permit/PMT2005-01104-FIR/) |
| Jan 26, 2005 | Plumbing | New three story building with basement, attached by two pedestrian walkways at the second level connecting this building to two other buildings. ( 82,945 s.f.) at the University Corporation for Atmospheric Research. | $600,000 | [PMT2004-03424-PLB](https://nearbypermits.com/boulder/permit/PMT2004-03424-PLB/) |
| Jan 26, 2005 | Mechanical (HVAC) | New three story building with basement, attached by two pedestrian walkways at the second level connecting this building to two other buildings. ( 82,945 s.f.) at the University Corporation for Atmospheric Research. | $1,600,000 | [PMT2004-03424-MEC](https://nearbypermits.com/boulder/permit/PMT2004-03424-MEC/) |
| Jan 26, 2005 | Electrical | New three story building with basement, attached by two pedestrian walkways at the second level connecting this building to two other buildings. ( 82,945 s.f.) at the University Corporation for Atmospheric Research. | $1,000,054 | [PMT2004-03424-ELE](https://nearbypermits.com/boulder/permit/PMT2004-03424-ELE/) |
| Jan 26, 2005 | New building | New three story building with basement, attached by two pedestrian walkways at the second level connecting this building to two other buildings. ( 82,945 s.f.) at the University Corporation for Atmospheric Research. | $6,821,065 | [PMT2004-03424](https://nearbypermits.com/boulder/permit/PMT2004-03424/) |
| Nov 10, 2004 | New building | Footing and foundation only permit | Not listed | [PMT2004-04375](https://nearbypermits.com/boulder/permit/PMT2004-04375/) |
| Oct 13, 2004 | Electrical | Relocate electrical feed. Primatry to new three story building. Service is from 15 KVA transformer. | $27,500 | [PMT2004-03988-ELE](https://nearbypermits.com/boulder/permit/PMT2004-03988-ELE/) |
| Dec 23, 2003 | Plumbing | Remodel of kitchen area in NCAR building. | $17,506 | [PMT2003-05251-PLB](https://nearbypermits.com/boulder/permit/PMT2003-05251-PLB/) |
| Dec 23, 2003 | Mechanical (HVAC) | Remodel of kitchen area in NCAR building. | $10,400 | [PMT2003-05251-MEC](https://nearbypermits.com/boulder/permit/PMT2003-05251-MEC/) |
| Dec 23, 2003 | Electrical | Remodel of kitchen area in NCAR building. | $11,587 | [PMT2003-05251-ELE](https://nearbypermits.com/boulder/permit/PMT2003-05251-ELE/) |
| Dec 23, 2003 | Alteration or repair | Remodel of kitchen area in NCAR building. | $225,639 | [PMT2003-05251](https://nearbypermits.com/boulder/permit/PMT2003-05251/) |
| Jul 18, 2003 | Elevator | Provide necessary labor & material to install microlight door edges & battery lowering on six 3 stop elevators. | $25,852 | [PMT2003-02845](https://nearbypermits.com/boulder/permit/PMT2003-02845/) |
| Jun 22, 2001 | Fire systems | Fire Sprinkler system | $4,000 | [PMT2001-02608-FIR](https://nearbypermits.com/boulder/permit/PMT2001-02608-FIR/) |
| Jun 4, 2001 | Alteration or repair | Addition of second floor reinforcing for structural support. | $12,000 | [PMT2001-02281](https://nearbypermits.com/boulder/permit/PMT2001-02281/) |
| Jun 27, 2000 | Roofing | Re-roof - Building #2 | $124,891 | [PMT2000-02653-RFG](https://nearbypermits.com/boulder/permit/PMT2000-02653-RFG/) |
| Jun 27, 2000 | Roofing | Re-roof - Building #1 | $239,401 | [PMT2000-02652-RFG](https://nearbypermits.com/boulder/permit/PMT2000-02652-RFG/) |
| Jun 19, 2000 | Fire systems | Suppression system for Kitchen Hood | $1,000 | [PMT2000-02420-FIR](https://nearbypermits.com/boulder/permit/PMT2000-02420-FIR/) |
| Jun 13, 2000 | Roofing | Tear off and reroof with mechanically fastened system | $110,176 | [PMT2000-02395-RFG](https://nearbypermits.com/boulder/permit/PMT2000-02395-RFG/) |
| Apr 3, 2000 | Fire systems | fire sprinkler system - Buildings Foothills lab 1, 2, 3 and 4 | $3,200 | [PMT2000-01294-FIR](https://nearbypermits.com/boulder/permit/PMT2000-01294-FIR/) |
| Mar 29, 2000 | Fire systems | Relocating heads for a fire sprinkler system. RTU replacement. | $3,500 | [PMT2000-01251-FIR](https://nearbypermits.com/boulder/permit/PMT2000-01251-FIR/) |
| Jan 12, 2000 | Plumbing | Remove existing computer room HVAC and replace with new. | $750 | [PMT1999-10956-PLB](https://nearbypermits.com/boulder/permit/PMT1999-10956-PLB/) |
| Jan 12, 2000 | Mechanical (HVAC) | Remove existing computer room HVAC and replace with new. | $18,840 | [PMT1999-10956-MEC](https://nearbypermits.com/boulder/permit/PMT1999-10956-MEC/) |
| Jan 12, 2000 | Electrical | Remove existing computer room HVAC and replace with new. | $15,387 | [PMT1999-10956-ELE](https://nearbypermits.com/boulder/permit/PMT1999-10956-ELE/) |
| Jan 12, 2000 | Alteration or repair | Remove existing computer room HVAC and replace with new. | $56,073 | [PMT1999-10956](https://nearbypermits.com/boulder/permit/PMT1999-10956/) |
| Sep 8, 1999 | Roofing | Remove EPDM roof and re-roof with 2 ply and SBS cap. | $30,250 | [PMT1999-07471-RFG](https://nearbypermits.com/boulder/permit/PMT1999-07471-RFG/) |
| Apr 12, 1999 | Fire systems | Fire install fire sprinkler system | $890 | [PMT1999-02950-FIR](https://nearbypermits.com/boulder/permit/PMT1999-02950-FIR/) |
| Mar 29, 1999 | Mechanical (HVAC) | Mechanical mechanical for tenant finish | $19,875 | [PMT1999-02529-MEC](https://nearbypermits.com/boulder/permit/PMT1999-02529-MEC/) |
| Mar 29, 1999 | Electrical | Electrical electrical for tenant finish | $4,375 | [PMT1999-02528-ELE](https://nearbypermits.com/boulder/permit/PMT1999-02528-ELE/) |
| Mar 29, 1999 | Alteration or repair | Tenant remodel the original general permit number is 992527. | $65,000 | [PMT1999-02527](https://nearbypermits.com/boulder/permit/PMT1999-02527/) |
| Jan 28, 1999 | Mechanical (HVAC) | Mechanical mechanical for tenant finish | $11,483 | [PMT1999-00837-MEC](https://nearbypermits.com/boulder/permit/PMT1999-00837-MEC/) |
| Dec 22, 1998 | Electrical | Electrical wiring for tenant finish | $21,109 | [PMT1998-08753-ELE](https://nearbypermits.com/boulder/permit/PMT1998-08753-ELE/) |
| Dec 18, 1998 | Fire systems | Fire install fire sprinkler system | $4,000 | [PMT1998-08700-FIR](https://nearbypermits.com/boulder/permit/PMT1998-08700-FIR/) |
| Dec 3, 1998 | Mechanical (HVAC) | Mechanical replace 2000 mbh @ 840 btu cu FT low pressure boil | $145,788 | [PMT1998-08341-MEC](https://nearbypermits.com/boulder/permit/PMT1998-08341-MEC/) |
| Dec 1, 1998 | Alteration or repair | Tenant finish the original general permit number is 988180. | $97,000 | [PMT1998-08180](https://nearbypermits.com/boulder/permit/PMT1998-08180/) |
| Sep 24, 1998 | New building | Install satellite antenna the original general permit number is 986498. | $7,600 | [PMT1998-06498](https://nearbypermits.com/boulder/permit/PMT1998-06498/) |
| Jul 13, 1998 | New building | Install 3 satellites the original general permit number is 984296. | $1,500 | [PMT1998-04296](https://nearbypermits.com/boulder/permit/PMT1998-04296/) |
| Nov 21, 1997 | Mechanical (HVAC) | Mechanical move condenser unit | $2,658 | [PMT1997-07527-MEC](https://nearbypermits.com/boulder/permit/PMT1997-07527-MEC/) |
| Oct 28, 1997 | Electrical | Electrical electrical wiring | $850 | [PMT1997-06808-ELE](https://nearbypermits.com/boulder/permit/PMT1997-06808-ELE/) |
| Oct 21, 1997 | Alteration or repair | Install 2 roof hatches the original general permit number is 976459. | $8,000 | [PMT1997-06459](https://nearbypermits.com/boulder/permit/PMT1997-06459/) |
| Oct 9, 1997 | Demolition | Demolition interior demo & prep work for roof hatches | Not listed | [PMT1997-06314-DEM](https://nearbypermits.com/boulder/permit/PMT1997-06314-DEM/) |
| Aug 28, 1997 | Mechanical (HVAC) | Mechanical NEW A/C | $1,100 | [PMT1997-05307-MEC](https://nearbypermits.com/boulder/permit/PMT1997-05307-MEC/) |
| Aug 20, 1997 | Electrical | Electrical electrical tenant finish | $1,500 | [PMT1997-05094-ELE](https://nearbypermits.com/boulder/permit/PMT1997-05094-ELE/) |
| Aug 18, 1997 | Alteration or repair | Tenant finish - conference room the original general permit number is 974818. | $14,000 | [PMT1997-04818](https://nearbypermits.com/boulder/permit/PMT1997-04818/) |
| Aug 12, 1997 | Mechanical (HVAC) | Mechanical relocate diffusers | $900 | [PMT1997-04877-MEC](https://nearbypermits.com/boulder/permit/PMT1997-04877-MEC/) |
| Jul 15, 1997 | Electrical | Electrical electrical wiring | $3,500 | [PMT1997-04215-ELE](https://nearbypermits.com/boulder/permit/PMT1997-04215-ELE/) |
| Jul 9, 1997 | Alteration or repair | Office remodel the original general permit number is 974087. | $10,000 | [PMT1997-04087](https://nearbypermits.com/boulder/permit/PMT1997-04087/) |
| Jun 12, 1997 | Fire systems | Fire replace a fire sprinkler system | $1,000 | [PMT1997-03525-FIR](https://nearbypermits.com/boulder/permit/PMT1997-03525-FIR/) |
| May 29, 1997 | Electrical | Electrical electrical on remodel | $14,000 | [PMT1997-03162-ELE](https://nearbypermits.com/boulder/permit/PMT1997-03162-ELE/) |
| Feb 7, 1997 | Mechanical (HVAC) | Mechanical four vav boxes & ductwork | $7,500 | [PMT1997-00738-MEC](https://nearbypermits.com/boulder/permit/PMT1997-00738-MEC/) |
| Jan 30, 1997 | Alteration or repair | Room renovation the original general permit number is 970503. | $42,500 | [PMT1997-00503](https://nearbypermits.com/boulder/permit/PMT1997-00503/) |
| Jan 6, 1997 | Fire systems | Fire fire sprinkler system 2 heads | $450 | [PMT1997-00058-FIR](https://nearbypermits.com/boulder/permit/PMT1997-00058-FIR/) |
| Dec 26, 1996 | Alteration or repair | Remodel the original general permit number is 968381. | $20,000 | [PMT1996-08381](https://nearbypermits.com/boulder/permit/PMT1996-08381/) |
| Oct 1, 1996 | Alteration or repair | Reinforce floor the original general permit number is 966444. | $25,000 | [PMT1996-06444](https://nearbypermits.com/boulder/permit/PMT1996-06444/) |
| Aug 23, 1996 | Mechanical (HVAC) | Mechanical replace boiler,new fan coil unit,2 preheat coils,d | $69,600 | [PMT1996-05542-MEC](https://nearbypermits.com/boulder/permit/PMT1996-05542-MEC/) |
| Nov 6, 1995 | New building | Installation of ground mounted satellite the original general permit number is | $2,500 | [PMT1995-08326](https://nearbypermits.com/boulder/permit/PMT1995-08326/) |
| Oct 30, 1995 | Fence, wall or deck | Fence erect a 7 FT wood trash enclosure (7 FT max hgt) | $2,900 | [PMT1995-08115-FEN](https://nearbypermits.com/boulder/permit/PMT1995-08115-FEN/) |
| Jun 23, 1993 | Electrical | Electrical install outlets and switches | $250 | [PMT1993-04540-ELE](https://nearbypermits.com/boulder/permit/PMT1993-04540-ELE/) |
| May 28, 1993 | Alteration or repair | Tenant remodel the original general permit number is 933723. | $37,389 | [PMT1993-03723](https://nearbypermits.com/boulder/permit/PMT1993-03723/) |
| Nov 14, 1991 | Electrical | Electrical temp control wiring | $40,000 | [PMT1991-S3135-ELE](https://nearbypermits.com/boulder/permit/PMT1991-S3135-ELE/) |
| Nov 9, 1990 | Fire systems | Fire rmdl fire spklr sys | Not listed | [PMT1990-R4602-FIR](https://nearbypermits.com/boulder/permit/PMT1990-R4602-FIR/) |
| Sep 28, 1990 | Plumbing | Plumbing int fnsh plbg | $10,000 | [PMT1990-R3547-PLB](https://nearbypermits.com/boulder/permit/PMT1990-R3547-PLB/) |
| Sep 28, 1990 | Electrical | Electrical RMDL WIRING | $45,000 | [PMT1990-R3541-ELE](https://nearbypermits.com/boulder/permit/PMT1990-R3541-ELE/) |
| Sep 28, 1990 | Alteration or repair | Ten fnsh. The original general permit number is r3525. | $261,710 | [PMT1990-R3525](https://nearbypermits.com/boulder/permit/PMT1990-R3525/) |
| Sep 26, 1990 | Fire systems | Fire add to fire spklr sys | Not listed | [PMT1990-R3476-FIR](https://nearbypermits.com/boulder/permit/PMT1990-R3476-FIR/) |
| Sep 20, 1990 | Mechanical (HVAC) | Mechanical INT FNSH HVAC | $125,000 | [PMT1990-R3317-MEC](https://nearbypermits.com/boulder/permit/PMT1990-R3317-MEC/) |
| Sep 18, 1990 | Electrical | Electrical ten rmdl wiring | $85,000 | [PMT1990-R3240-ELE](https://nearbypermits.com/boulder/permit/PMT1990-R3240-ELE/) |
| Sep 18, 1990 | Alteration or repair | Ten fnsh. The original general permit number is r3150. | $261,710 | [PMT1990-R3150](https://nearbypermits.com/boulder/permit/PMT1990-R3150/) |
| Sep 14, 1990 | Electrical | Electrical rewire low voltage temp | $30,000 | [PMT1990-R3138-ELE](https://nearbypermits.com/boulder/permit/PMT1990-R3138-ELE/) |

## More on this street

Other addresses on Mitchell Ln with permits, nearest house number first:

- [3375 Mitchell Ln](https://nearbypermits.com/boulder/address/3375-mitchell-ln/): newest permit Oct 14, 2024
- [3360 Mitchell Ln](https://nearbypermits.com/boulder/address/3360-mitchell-ln/): newest permit Jul 28, 2025
- [3340 Mitchell Ln](https://nearbypermits.com/boulder/address/3340-mitchell-ln/): newest permit Dec 11, 2024

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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 15:23 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/

All 115 permits at this address: https://nearbypermits.com/boulder/address/3450-mitchell-ln/