4775 Walnut St
Boulder, CO 80301
200 permits on record here. The newest, Mar 17: Install one new strobe. Boulder publishes permits without map coordinates, so this address has no map and no quarter-mile list.
Here200 permits · 4775 Walnut St
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Install one new strobeFire systemsMar 17$1,015
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Interior Only Tenant RemodelAlteration or repairFeb 24$12,000
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Feb 9$6,685
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Adding one (1) horn/strobe to a new small conference room converted from an office spaceFire systemsOct 27, 2025$3,850
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Relocate (5) for ti (fsr13)Fire systemsAug 29, 2025$2,516
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The project entails limited renovations to an existing second floor approx 6,863 sf business suite including…Alteration or repairJul 17, 2025$32,539
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Provide 50amp single phase power connection and disconnect to the roof mounted VRF outdoor unitElectricalFeb 24, 2025$300
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Oct 10, 2024$1,950
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Installing a new Carrier VRF system at Snap IncMechanical (HVAC)Aug 26, 2024$200,000
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Demo of breakroom and private office space, no change in useAlteration or repairJul 9, 2024$83,089
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Relocate/Remove 8 heads (FSR13)Fire systemsMay 22, 2024$3,500
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Feb 27, 2023not listed
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Alterations / additions to the existing fire alarm system to accommodate an expansion into the adjacent…Fire systemsOct 20, 2022$3,400
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Alterations / additions to the existing wet pipe fire sprinkler system to accommodate an expansion into the…Fire systemsOct 12, 2022$9,993
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Oct 5, 2022$6,000
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Current tenant of KM Labs is reducing the size of their tenant space to accomodate the expansion of the… × 2 permitsAlteration or repairOct 5, 2022$151,000
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Oct 5, 2022$18,000
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Sep 14, 2022$50,000
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Current tenant of Suite 1B expansion into adjacent tenant space as indicated on plan with inpacted areas of…Mechanical (HVAC)Sep 14, 2022$130,000
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Current tenant of Suite 1B expansion into adjacent tenant space as indicated on plan with inpacted areas of… × 2 permitsAlteration or repairSep 14, 2022$800,000
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Sep 14, 2022$350,000
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Additions / Alterations to the existing fire alarm system - adding approximately 6 notification appliances…Fire systemsMar 18, 2022$3,854
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Mar 14, 2022$6,735
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Mar 2, 2022$14,500
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Tenant improvement of existing office spaceMechanical (HVAC)Mar 2, 2022$12,500
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Mar 2, 2022$26,960
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Feb 23, 2022 to Mar 2, 2022$1,197,410
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Jul 27, 2021not listed
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Apr 22, 2019$1,790
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Apr 8, 2019$13,235
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Apr 8, 2019$8,125
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Floodplain development permit for an interior remodel to an existing office suite on the second floor (Suite…Alteration or repairApr 8, 2019$396,500
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Apr 8, 2019$109,000
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Interior tenant remodel of an office suite on the second floor of the buildingAlteration or repairApr 8, 2019$396,500
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Jan 18, 2019$600
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Jan 18, 2019not listed
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Permit for the removal of existing common area plumbing fixturesAlteration or repairJan 18, 2019$870
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Jul 27, 2018$4,880
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Jul 11, 2018$139,500
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5 fire sprinkler pendent relocates and 2 addsFire systemsMay 25, 2018$1,820
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Interior tenant remodel for an office tenant suite to remove demising wall in conference room and to install…Alteration or repairMay 18, 2018$37,000
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Mechanical (HVAC) permit, no description from the cityMechanical (HVAC)May 11, 2018$5,200
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May 11, 2018$7,000
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Mar 29, 2018$712,452
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Mar 29, 2018not listed
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Mar 29, 2018$600
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Feb 23, 2018not listed
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FS - SOWL (Scope of Work Letter) for adding one QR SSP and relocating 3 sprinkler heads to accommodate new…Fire systemsDec 4, 2017$1,785
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FA - Add 3 strobes, 2 waterproof strobesFire systemsOct 30, 2017$1,100
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Oct 23, 2017$45,000
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Tenant remodel of lobby and restrooms for ADA compliance with associated mechanicalMechanical (HVAC)Oct 23, 2017$4,000
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Tenant remodel of lobby and restrooms for ADA compliance with associated mechanical × 2 permitsElectricalOct 23, 2017$139,240
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Tenant remodel of lobby and restrooms for ADA compliance with associated mechanicalAlteration or repairOct 23, 2017$120,195
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Sep 28, 2017not listed
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Sep 19, 2017$2,740
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Suite #210 - Interior, non-structural tenant remodelMechanical (HVAC)Aug 14, 2017$1,800
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Aug 14, 2017$37,857
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Aug 14, 2017$3,870
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Suite #210 - Interior, non-structural tenant remodelAlteration or repairAug 14, 2017$44,811
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Aug 14, 2017not listed
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Installation of (1) replacement RTUMechanical (HVAC)Jul 27, 2017$14,136
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Permit for site and parking lot lighting for 4775 Walnut Ave. per Minor Modification ADR2016-00205ElectricalApr 5, 2017$70,199
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Site improvements for 4775 Walnut Ave. per Minor Modification ADR2016-00205Alteration or repairMar 16, 2017not listed
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Dec 7, 2016$6,500
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Fa - es - add/rel notification throughoutFire systemsNov 29, 2016$5,100
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Nov 7 to 14, 2016$29,620
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Oct 28, 2016$111,481
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Suite #104. Contractor TBDMechanical (HVAC)Oct 28, 2016$17,125
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Suite #104. Contractor TBDElectricalOct 28, 2016$45,320
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Suite #104. Contractor TBDAlteration or repairOct 28, 2016$101,915
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Oct 28, 2016$40,000
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Interior tenant remodel for Sphero technical office suiteMechanical (HVAC)Oct 28, 2016$150,000
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Oct 28, 2016$1,159,460
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Oct 28, 2016$148,000
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Interior tenant remodel for Sphero technical office suiteAlteration or repairOct 28, 2016$1,159,466
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Aug 15, 2016not listed
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Interior tenant remodel to an existing office/warehouse suite to create and modify laboratory and…PlumbingJun 1, 2016$30,000
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Interior tenant remodel to an existing office/warehouse suite to create and modify laboratory and…Mechanical (HVAC)Jun 1, 2016$60,000
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Interior tenant remodel to an existing office/warehouse suite to create and modify laboratory and… × 2 permitsAlteration or repairJun 1, 2016$1,011,427
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Interior tenant remodel to an existing office/warehouse suite to create and modify laboratory and…ElectricalJun 1, 2016$80,000
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May 31, 2016$4,200
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ES - FA - KM Labs (1st floor)Fire systemsMay 11, 2016$15,495
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ES - FS - Suite 102 KM LabsFire systemsMay 10, 2016$8,000
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Apr 11, 2016not listed
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Dec 2, 2015$1,226
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Tenant remodel of Suite #200 for ImatestMechanical (HVAC)Dec 2, 2015$946
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Dec 2, 2015$30,986
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Tenant remodel of Suite #200 for ImatestAlteration or repairDec 2, 2015$28,497
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Replacement of 6 RTU's (5 ton) and one split unit (2 ton) in existing locations with existing penetrationsMechanical (HVAC)Feb 24, 2015$69,556
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Aug 26, 2014$64,853
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Replace 3, 5-ton rooftop units on buildingMechanical (HVAC)Nov 18, 2013$49,836
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Suite 220 -- Install a glass panel wall to create an office -- space labeled "218" on plansElectricalNov 6, 2012$800
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Suite 220 -- Install a glass panel wall to create an office -- space labeled "218" on plansAlteration or repairNov 6, 2012$5,895
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Removal of an RTU and isntall replacement RTU in same location 5 ton cooling capacity -- 13.0 SEER minimum…Mechanical (HVAC)Aug 22, 2012$11,842
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Fire Alarm - knowledge factor, suite 220Fire systemsAug 22, 2012$400
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Aug 16, 2012$4,120
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Interior tenant remodel of existing office space for expansion of "Knowledge Factor"Mechanical (HVAC)Aug 16, 2012$8,976
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Interior tenant remodel of existing office space for expansion of "Knowledge Factor" × 2 permitsElectricalAug 16, 2012$111,044
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Interior tenant remodel of existing office space for expansion of "Knowledge Factor"Alteration or repairAug 16, 2012$114,367
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Removal and replacement (like for like) of existing 7.5 ton RTUMechanical (HVAC)Aug 14, 2012$12,928
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Removal and replacement (like for like) of existing 5 ton RTUMechanical (HVAC)Aug 14, 2012$13,375
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Fire Sprinkler System - Knowledge FactorFire systemsAug 8, 2012$2,600
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Tennant Finish Fire Alarm Relocation of One Notification Device and Addition of One Notification Device For…Fire systemsMay 11, 2012$300
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Demolition of 48 lineal feet of non-strucutral wallsMechanical (HVAC)Apr 5, 2012not listed
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Apr 5, 2012$9,200
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Demolition of 48 lineal feet of non-strucutral wallsAlteration or repairApr 5, 2012$14,738
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Aug 31, 2010$6,595
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Jul 22, 2010$2,100
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Tenant remodel in suite 230 in existing buildingMechanical (HVAC)Jul 22, 2010$11,000
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Jul 22, 2010$873,286
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Jul 22, 2010$33,000
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Jul 14, 2010$5,100
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Tennant Finish SprinklerFire systemsJul 13, 2010$4,550
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Tennant Finish Fire Alarm For Knowlege FactorFire systemsJun 17, 2010$1,600
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Jun 15, 2010$3,000
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Tenant remodel of 7,128 sf in second floor suite to create offices for "Knowledge Factor" -- computer…Mechanical (HVAC)Jun 15, 2010$11,600
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Tenant remodel of 7,128 sf in second floor suite to create offices for "Knowledge Factor" -- computer… × 2 permitsAlteration or repairJun 15, 2010$574,676
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Jun 15, 2010$16,000
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Scope of Work Letter Knowledge Factor Suite 2BFire systemsJun 3, 2010$1,000
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Scope of Work Letter Foraker Design Suite 2AFire systemsJun 2, 2010$1,100
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Tennant Finish Sprinkler Unit 2A Foraker DesignFire systemsMay 27, 2010$2,000
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May 21, 2010$3,000
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May 21, 2010$12,500
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May 21, 2010$140,000
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May 21, 2010$16,000
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Tenant remodel of 2513 square foot in tenant space for Foraker DesignAlteration or repairMay 21, 2010$173,045
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Tennant Finish Fire Alarm Elevator LobiesFire systemsAug 20, 2009$3,000
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Tennant Finish Fire Alarm Vacant SuitesFire systemsAug 20, 2009$2,500
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Tennant Finish Sprinkler Second LevelFire systemsAug 19, 2009$7,660
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Remodel to create open floorplans for vacant suites BMechanical (HVAC)Aug 14, 2009$80,000
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Aug 14, 2009$49,000
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Remodel to create open floorplans for vacant suites BAlteration or repairAug 14, 2009$1,509,970
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Aug 14, 2009$35,000
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Remodel of common areas in industrial office buildingMechanical (HVAC)Aug 14, 2009$15,000
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Aug 14, 2009not listed
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Aug 14, 2009$65,000
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Remodel of common areas in industrial office buildingAlteration or repairAug 14, 2009$246,056
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Removal of interior partition walls (under separate demo permit)Mechanical (HVAC)Aug 12, 2009$23,000
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Aug 12, 2009$22,500
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Removal of interior partition walls (under separate demo permit)Alteration or repairAug 12, 2009$89,226
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Aug 4, 2009not listed
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May 13, 2009not listed
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Tennant Finish Sprinkler Symmetricom Suite 1-B1Fire systemsAug 25, 2008$900
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Remodel existing office spaceMechanical (HVAC)Aug 5, 2008$8,500
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Remodel existing office spaceElectricalAug 5, 2008$13,000
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Remodel existing office spaceAlteration or repairAug 5, 2008$25,000
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Wire new swamp cooler with RTUElectricalDec 26, 2007$400
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Replacement RTU for Unit 1-C.Electrical by separate permitMechanical (HVAC)Dec 17, 2007$15,000
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May 18, 2007$500
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Fire Sprinkler System - Demo 15 sprinklersFire systemsOct 10, 2006$500
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Non structural interior partition demoDemolitionSep 27, 2006not listed
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Replacement of rooftop heating and cooling unit for suite 1DMechanical (HVAC)May 11, 2004$5,000
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Fire Alarm system - vertisFire systemsMar 12, 2004$3,400
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Fire Sprinkler system - Suite D-1Fire systemsMar 11, 2004$2,200
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Feb 6, 2004$4,500
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Interior tenant remodel to allow a professional office tenant (Vertis) expand into the adjacent professional…Mechanical (HVAC)Feb 6, 2004$22,500
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Feb 6, 2004$28,000
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Interior tenant remodel to allow a professional office tenant (Vertis) expand into the adjacent professional…Alteration or repairFeb 6, 2004$210,000
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Fire Alarm System - Timing SolutionsFire systemsSep 24, 2003$10,000
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Sep 4, 2003$1,500
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Tenant remodel on first level for Timing SolutionsMechanical (HVAC)Sep 4, 2003$19,500
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Sep 4, 2003$20,000
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Tenant remodel on first level for Timing SolutionsAlteration or repairSep 4, 2003$195,000
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Fire Sprinkler system - Timing solutionsFire systemsSep 3, 2003$5,529
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Aug 25, 2003not listed
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New electric panelElectricalOct 3, 2001$600
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Fire Sprinkler System - Clean RoomFire systemsAug 13, 2001$2,600
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Apr 16, 2001$8,000
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Tenant remodel to construct clean room and add mechanical mezzanine space (+/- 739 S.F.) × 2 permitsMechanical (HVAC)Apr 16, 2001$120,000
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Apr 16, 2001$40,000
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Tenant remodel to construct clean room and add mechanical mezzanine space (+/- 739 S.F.)Alteration or repairApr 16, 2001$280,000
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Fire Sprinkler system - Network PhotonicsFire systemsApr 3, 2001$8,248
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Mar 23, 2001$4,000
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Install scrubber unitMechanical (HVAC)Mar 6, 2001$15,000
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Power to roof scrubberElectricalFeb 27, 2001$1,400
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Move electrical feed for compressorElectricalFeb 7, 2001$300
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Fire sprinkler System - Network PhotonicsFire systemsDec 29, 2000$1,615
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Remodel for new tenantPlumbingDec 20, 2000$12,300
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Remodel for new tenantMechanical (HVAC)Dec 20, 2000$24,500
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Remodel for new tenantElectricalDec 20, 2000$22,000
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Remodel for new tenantAlteration or repairDec 20, 2000$100,000
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Wiring for rooftop unitElectricalOct 18, 1999$350
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Install roof top unitMechanical (HVAC)Oct 18, 1999$3,918
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Tenant finish the original general permit number is 943928Alteration or repairJun 3, 1994$30,000
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Mechanical computer room a/c unitMechanical (HVAC)Oct 25, 1990$4,800
Boulder Planning and Development Services updated its data Oct 5, 2026. We checked it Oct 6, 06:35 UTC. See the city's official records.
At this address: every permit the city holds. Nearby: permits from the last two years, from our copy of the city's data.
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