# Building permits at 921 Walnut St, Boulder, CO 119 permits on record here. The newest, Aug 5: Modification of an existing addressable fire alarm system to provide full occupant notification throughout. 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 5, 2026 | Fire systems | Modification of an existing addressable fire alarm system to provide full occupant notification throughout the listed TI area. | $5,224 | [FIR2026-00267](https://nearbypermits.com/boulder/permit/FIR2026-00267/) | | Aug 3, 2026 | Alteration or repair | Demolition of select interior partitions within two existing office suites. New break rooms, conference, room and copy station. | $319,799 | [BLD-NRE2026-00066](https://nearbypermits.com/boulder/permit/BLD-NRE2026-00066/) | | Jun 29, 2026 | Fire systems | 5-head tenant finish to meet code coverage for new wall/ceiling layout. | $896 | [FIR2026-00227](https://nearbypermits.com/boulder/permit/FIR2026-00227/) | | Jun 17, 2026 | Alteration or repair | Demolition of interior flooring finishes, ceiling tiles, and non load bearing interior partition walls. | Not listed | [DEM2026-00047](https://nearbypermits.com/boulder/permit/DEM2026-00047/) | | Apr 6, 2026 | Sign | wall sign installation | $1,098 | [SGN2026-00031](https://nearbypermits.com/boulder/permit/SGN2026-00031/) | | Mar 26, 2026 | Fire systems | A new tenant is moving in, and we are adding and relocating sprinklers for coverage to the new wall and ceiling layout | $7,180 | [FIR2026-00120](https://nearbypermits.com/boulder/permit/FIR2026-00120/) | | Mar 13, 2026 | Fire systems | Relocate 60 Pendants, add 4 Pendants and plug 14 existing pendants | $14,615 | [FIR2026-00082](https://nearbypermits.com/boulder/permit/FIR2026-00082/) | | Feb 11, 2026 | Fire systems | The purpose of this work is to modify the existing fire alarm system to accommodate the new layout of 912 walnut street boulder, co 80302. The system modifications consist of the following: 1. Installing one (1) new power supply. 2. Installing two (2) new trigger relays. 3. Installing seven (7) new | $4,374 | [FIR2026-00032](https://nearbypermits.com/boulder/permit/FIR2026-00032/) | | Feb 4, 2026 | Alteration or repair | Interior alterations to Merrill office location. | $750,000 | [BLD-NRE2025-00176](https://nearbypermits.com/boulder/permit/BLD-NRE2025-00176/) | | Dec 4, 2025 | Alteration or repair | REVISION 2/20/26-Added a manual blackout window covering over all exterior windows in the conference room, and a carpet inset into tile in the reception area. 921 Walnut St - Suite 300 - Interior Only office remodel on the 3rd Floor. Scope includes demolition of partitions and build back with associ | $490,000 | [BLD-NRE2025-00135](https://nearbypermits.com/boulder/permit/BLD-NRE2025-00135/) | | Oct 9, 2025 | Alteration or repair | Bank of America. The general scope of the project includes demolition of non-structural partitions and ceilings as well as associated electrical and plumbing for area of work. New glass office fronts as well as associated electrical and plumbing for new spaces. Interior only. | $475,000 | [BLD-NRE2025-00075](https://nearbypermits.com/boulder/permit/BLD-NRE2025-00075/) | | Sep 29, 2025 | Roofing | All Structures must be permitted separately Total tear-off & reroof of ONLY the Shingle portion of a Commercial Structure, 10 squares of dimensional shingles on a pitch represented as 5/12. All roof materials shall be installed per manufacturer?s specs. Mid-roof inspection is required if 1) pitch is | $5,569 | [RFG2025-00770](https://nearbypermits.com/boulder/permit/RFG2025-00770/) | | Aug 8, 2025 | Fire systems | Modify an existing addressable fire alarm system by demo/relocating (4) existing wall mount devices only. (Fati) | $5,057 | [FIR2025-00286](https://nearbypermits.com/boulder/permit/FIR2025-00286/) | | Aug 4, 2025 | Fire systems | This is a TI to the existing wet system. (FSR13) | $2,766 | [FIR2025-00277](https://nearbypermits.com/boulder/permit/FIR2025-00277/) | | Jul 15, 2025 | Alteration or repair | Install new demising wall and 3 new offices located on the third floor. Demo of interior partition walls - DEM2025-00052. | $104,184 | [BLD-NRE2025-00069](https://nearbypermits.com/boulder/permit/BLD-NRE2025-00069/) | | Jul 1, 2025 | Electrical | remove (43) existing 2x4 troffer lights and install (43) new LED troffer lights | $15,000 | [ELE2025-00498](https://nearbypermits.com/boulder/permit/ELE2025-00498/) | | Jun 17, 2025 | Alteration or repair | Demolition of non structural interior walls and finishes. | Not listed | [DEM2025-00052](https://nearbypermits.com/boulder/permit/DEM2025-00052/) | | May 13, 2025 | Sign | Voided for inactivity - no inspections for 180 days two (2).25" thick black acrylic signs at identical sizes (144"x30") to be installed on storefront and side of building above doors | $1,377 | [SGN2025-00040](https://nearbypermits.com/boulder/permit/SGN2025-00040/) | | Dec 20, 2024 | Alteration or repair | Floor infill of existing stair opening at 2nd and 3rd Floor. | $34,746 | [BLD-NRE2024-00140](https://nearbypermits.com/boulder/permit/BLD-NRE2024-00140/) | | Oct 14, 2024 | Fire systems | Adding and relocating sprinklker heads for a tenant finish. (FSR13) | $14,652 | [FIR2024-00381](https://nearbypermits.com/boulder/permit/FIR2024-00381/) | | Sep 12, 2024 | Alteration or repair | Renovation of an existing attorney's office suite located on the second floor and constructing a new controlled entry into a shared conference room on the third floor. Resubmittal - Scope altered to remove controlled entry to conference room. 9/30/24 Revisions made to platform, meeting room and wait | $1,261,975 | [BLD-NRE2024-00069](https://nearbypermits.com/boulder/permit/BLD-NRE2024-00069/) | | Sep 9, 2024 | Fire systems | Modify existing addressable fire alarm system to provide full occupant notification throughout a 2nd floor tenant improvement (adding total of 16 new audio/visual devices). (Fati) | $6,234 | [FIR2024-00368](https://nearbypermits.com/boulder/permit/FIR2024-00368/) | | Aug 2, 2024 | Alteration or repair | 4/24/26-VOID-Inspections not completed within 180 days. MUST REAPPLY FOR INSPECTIONS Interior non structural demo of existing floor finishes, partitions, and acoustical ceilings. | Not listed | [DEM2024-00046](https://nearbypermits.com/boulder/permit/DEM2024-00046/) | | Sep 1, 2020 | Sign | *Painted Signs on South and West facing walls. | $4,400 | [SGN2020-00067](https://nearbypermits.com/boulder/permit/SGN2020-00067/) | | Jun 27, 2019 | Fire systems | Addition of 2 notification devices and the relocation of two for tenant finish in existing office space on Second Floor See BLD-NRE2019-00051 for general building permit. HBC. | $1,255 | [FIR2019-00228](https://nearbypermits.com/boulder/permit/FIR2019-00228/) | | May 20, 2019 | Mechanical (HVAC) | Addition of partitions for new offices and meeting room in existing spaces on second floor. Scope of work to include associated mechanical and electrical. Lights to be relocated from existing offices on second and third floor. | $5,500 | [MEC2019-00406](https://nearbypermits.com/boulder/permit/MEC2019-00406/) | | May 20, 2019 | Electrical | Addition of partitions for new offices and meeting room in existing spaces on second floor. Scope of work to include associated mechanical and electrical. Lights to be relocated from existing offices on second and third floor. | $10,000 | [ELE2019-00295](https://nearbypermits.com/boulder/permit/ELE2019-00295/) | | May 20, 2019 | Alteration or repair | Addition of partitions for new offices and meeting room in existing spaces on second floor. Scope of work to include associated mechanical and electrical. Lights to be relocated from existing offices on second and third floor. HBC. 6/24/19: additional scope install R-30 insulation above ceiling per | $91,450 | [BLD-NRE2019-00051](https://nearbypermits.com/boulder/permit/BLD-NRE2019-00051/) | | May 17, 2019 | Addition | Floodplain development permit for an interior office remodel (suite 200) with addition of partitions for new offices and meeting room in existing spaces on second floor. | $91,450 | [FLD2019-00041](https://nearbypermits.com/boulder/permit/FLD2019-00041/) | | May 8, 2019 | Fire systems | 11-head tenant finish in existing office space on Second Floor See BLD-NRE2019-00051 for general building permit. HBC. | $605 | [FIR2019-00155](https://nearbypermits.com/boulder/permit/FIR2019-00155/) | | Apr 8, 2019 | Other | *Voided for inactivity due to no inspections performed within 180 days of issuance.*Removal and replacement of exterior lighting to become in compliance with City of Boulder lighting ordinance. Associated with ADR2019-00061. | Not listed | [FLD2019-00039](https://nearbypermits.com/boulder/permit/FLD2019-00039/) | | Oct 9, 2018 | Roofing | Existing membrane and insulation will remain. Installing a layer 1/4" densdeck and 1/2" wood fiber insulation. Install an EPDM ballasted roof system. | $33,025 | [RFG2018-00651](https://nearbypermits.com/boulder/permit/RFG2018-00651/) | | Oct 14, 2016 | Fire systems | Fs - sowl - rel 13 spks | $2,500 | [PMT2016-04792-FIR](https://nearbypermits.com/boulder/permit/PMT2016-04792-FIR/) | | Oct 3, 2016 | Plumbing | Interior tenant remodel of existing office suite to reconfigure office partitions, renovate breakroom, and update finishes for Bank of America/Merrill Lynch. Fire-detection and -sprinkler system modifications by separate permit and separate review by BFRD. | $4,680 | [PMT2016-04172-PLB](https://nearbypermits.com/boulder/permit/PMT2016-04172-PLB/) | | Oct 3, 2016 | Mechanical (HVAC) | Interior tenant remodel of existing office suite to reconfigure office partitions, renovate breakroom, and update finishes for Bank of America/Merrill Lynch. Fire-detection and -sprinkler system modifications by separate permit and separate review by BFRD. | $30,000 | [PMT2016-04172-MEC](https://nearbypermits.com/boulder/permit/PMT2016-04172-MEC/) | | Oct 3, 2016 | Fire systems | Interior tenant remodel of existing office suite to reconfigure office partitions, renovate breakroom, and update finishes for Bank of America/Merrill Lynch. Fire-detection and -sprinkler system modifications by separate permit and separate review by BFRD. | $400,000 | [PMT2016-04172-FLD](https://nearbypermits.com/boulder/permit/PMT2016-04172-FLD/) | | Oct 3, 2016 | Electrical | Interior tenant remodel of existing office suite to reconfigure office partitions, renovate breakroom, and update finishes for Bank of America/Merrill Lynch. Fire-detection and -sprinkler system modifications by separate permit and separate review by BFRD. | $50,000 | [PMT2016-04172-ELE](https://nearbypermits.com/boulder/permit/PMT2016-04172-ELE/) | | Oct 3, 2016 | Alteration or repair | Interior tenant remodel of existing office suite to reconfigure office partitions, renovate breakroom, and update finishes for Bank of America/Merrill Lynch. Fire-detection and -sprinkler system modifications by separate permit and separate review by BFRD. | $400,000 | [PMT2016-04172](https://nearbypermits.com/boulder/permit/PMT2016-04172/) | | Sep 16, 2016 | Demolition | Interior non-structural demo. permit in association with PMT2016-04172 | Not listed | [PMT2016-04349-DEM](https://nearbypermits.com/boulder/permit/PMT2016-04349-DEM/) | | Jul 11, 2016 | Fire systems | Fs - sowl - relocate 11 spks | $1,375 | [PMT2016-02955-FIR](https://nearbypermits.com/boulder/permit/PMT2016-02955-FIR/) | | Jul 7, 2016 | Fire systems | Fa - es - add notification and power supply | $4,513 | [PMT2016-03117-FIR](https://nearbypermits.com/boulder/permit/PMT2016-03117-FIR/) | | Jun 23, 2016 | Mechanical (HVAC) | Suite 250: Tenant interior remodel and expansion of existing professional office suite. Scope includes reconfiguration of interior partitions, relocation of diffusers and lighting, and update of finishes. | Not listed | [PMT2016-02197-MEC](https://nearbypermits.com/boulder/permit/PMT2016-02197-MEC/) | | Jun 23, 2016 | Alteration or repair | Suite 250: Tenant interior remodel and expansion of existing professional office suite. Scope includes reconfiguration of interior partitions, relocation of diffusers and lighting, and update of finishes. | $301,744 | [PMT2016-02197-FLD](https://nearbypermits.com/boulder/permit/PMT2016-02197-FLD/) | | Jun 23, 2016 | Electrical | Suite 250: Tenant interior remodel and expansion of existing professional office suite. Scope includes reconfiguration of interior partitions, relocation of diffusers and lighting, and update of finishes. | Not listed | [PMT2016-02197-ELE](https://nearbypermits.com/boulder/permit/PMT2016-02197-ELE/) | | Jun 23, 2016 | Alteration or repair | Suite 250: Tenant interior remodel and expansion of existing professional office suite. Scope includes reconfiguration of interior partitions, relocation of diffusers and lighting, and update of finishes. | $303,334 | [PMT2016-02197](https://nearbypermits.com/boulder/permit/PMT2016-02197/) | | Jun 21, 2016 | Fire systems | Fs - sowl - rel 11, add 2, plug 6 (qrs) | $2,000 | [PMT2016-02882-FIR](https://nearbypermits.com/boulder/permit/PMT2016-02882-FIR/) | | Sep 8, 2015 | Fire systems | Fs - es - tf for office space | $2,275 | [PMT2015-03830-FIR](https://nearbypermits.com/boulder/permit/PMT2015-03830-FIR/) | | Jul 6, 2015 | Plumbing | Huthcinson, Black, & Cook, Inc.-Relocation of lounge, kitchen, and copy room, elimination of high density file room and library and the addition of four attorney offices and work room. No additional square footage to building or tenant. | $8,000 | [PMT2015-01774-PLB](https://nearbypermits.com/boulder/permit/PMT2015-01774-PLB/) | | Jul 6, 2015 | Mechanical (HVAC) | Huthcinson, Black, & Cook, Inc.-Relocation of lounge, kitchen, and copy room, elimination of high density file room and library and the addition of four attorney offices and work room. No additional square footage to building or tenant. | $8,700 | [PMT2015-01774-MEC](https://nearbypermits.com/boulder/permit/PMT2015-01774-MEC/) | | Jul 6, 2015 | Addition | Huthcinson, Black, & Cook, Inc.-Relocation of lounge, kitchen, and copy room, elimination of high density file room and library and the addition of four attorney offices and work room. No additional square footage to building or tenant. | $192,000 | [PMT2015-01774-FLD](https://nearbypermits.com/boulder/permit/PMT2015-01774-FLD/) | | Jul 6, 2015 | Electrical | Huthcinson, Black, & Cook, Inc.-Relocation of lounge, kitchen, and copy room, elimination of high density file room and library and the addition of four attorney offices and work room. No additional square footage to building or tenant. | $20,000 | [PMT2015-01774-ELE](https://nearbypermits.com/boulder/permit/PMT2015-01774-ELE/) | | Jul 6, 2015 | Alteration or repair | Huthcinson, Black, & Cook, Inc.-Relocation of lounge, kitchen, and copy room, elimination of high density file room and library and the addition of four attorney offices and work room. No additional square footage to building or tenant. | $240,481 | [PMT2015-01774](https://nearbypermits.com/boulder/permit/PMT2015-01774/) | | Dec 1, 2011 | Fire systems | Tennant Finish Fire Alarm Addition of One Notification Device For Tennant Finish | $350 | [PMT2011-05193-FIR](https://nearbypermits.com/boulder/permit/PMT2011-05193-FIR/) | | Nov 28, 2011 | Fire systems | Tennant Finish Sprinkler For ZG Assets | $2,024 | [PMT2011-05117-FIR](https://nearbypermits.com/boulder/permit/PMT2011-05117-FIR/) | | Nov 16, 2011 | Plumbing | Suite 200B -- Tenant remodel to create/expand offices for "ZG Asset" -- reconfigure ductwork and relocate HVAC diffusers, modified electrical, add breakroom sink and cabinetry. | $200 | [PMT2011-04801-PLB](https://nearbypermits.com/boulder/permit/PMT2011-04801-PLB/) | | Nov 16, 2011 | Mechanical (HVAC) | Suite 200B -- Tenant remodel to create/expand offices for "ZG Asset" -- reconfigure ductwork and relocate HVAC diffusers, modified electrical, add breakroom sink and cabinetry. | $3,500 | [PMT2011-04801-MEC](https://nearbypermits.com/boulder/permit/PMT2011-04801-MEC/) | | Nov 16, 2011 | Electrical | Suite 200B -- Tenant remodel to create/expand offices for "ZG Asset" -- reconfigure ductwork and relocate HVAC diffusers, modified electrical, add breakroom sink and cabinetry. | $5,380 | [PMT2011-04801-ELE](https://nearbypermits.com/boulder/permit/PMT2011-04801-ELE/) | | Nov 16, 2011 | Alteration or repair | Suite 200B -- Tenant remodel to create/expand offices for "ZG Asset" -- reconfigure ductwork and relocate HVAC diffusers, modified electrical, add breakroom sink and cabinetry. | $66,954 | [PMT2011-04801](https://nearbypermits.com/boulder/permit/PMT2011-04801/) | | Nov 7, 2011 | Demolition | Interior non-structural demolition of cubicle walls in suite 200 B. NO occupancy allowed under this permit -- see PMT2011-04801 for tenant finish details. | Not listed | [PMT2011-04802-DEM](https://nearbypermits.com/boulder/permit/PMT2011-04802-DEM/) | | Oct 6, 2011 | Electrical | Installation of two circuits & outlets in the Merril Lynch offices. Interior work only. No external work authorized under the scope of this permit. | $1,150 | [PMT2011-04312-ELE](https://nearbypermits.com/boulder/permit/PMT2011-04312-ELE/) | | Aug 19, 2009 | Mechanical (HVAC) | Replacement gas-fired water heater at the Chop House. 390,000 btu | $10,000 | [PMT2009-03276-MEC](https://nearbypermits.com/boulder/permit/PMT2009-03276-MEC/) | | Jun 26, 2009 | Alteration or repair | Remodel to include a new outdoor patio, new swinging doors, facade changes, and raising awnings above doors. See LUR2009-00027 for use review and HIS2009-00018 for landmarks review. | $6,797 | [PMT2009-01952](https://nearbypermits.com/boulder/permit/PMT2009-01952/) | | Jun 18, 2009 | Fire systems | New Hood System For Boulder Chop House | $800 | [PMT2009-02227-FIR](https://nearbypermits.com/boulder/permit/PMT2009-02227-FIR/) | | Sep 16, 2008 | Mechanical (HVAC) | Selective demo of main conference room and conversion into two new offices. | $5,000 | [PMT2008-03159-MEC](https://nearbypermits.com/boulder/permit/PMT2008-03159-MEC/) | | Sep 16, 2008 | Electrical | Selective demo of main conference room and conversion into two new offices. | $15,000 | [PMT2008-03159-ELE](https://nearbypermits.com/boulder/permit/PMT2008-03159-ELE/) | | Sep 16, 2008 | Alteration or repair | Selective demo of main conference room and conversion into two new offices. | $80,000 | [PMT2008-03159](https://nearbypermits.com/boulder/permit/PMT2008-03159/) | | Dec 3, 2007 | Fire systems | Tennant Finish Fire Alarm ZG Asset Management | $800 | [PMT2007-05078-FIR](https://nearbypermits.com/boulder/permit/PMT2007-05078-FIR/) | | Oct 15, 2007 | Plumbing | Tenant remodel Suite 300. 4345 SF. No change in plumbing fixture. | $1,500 | [PMT2007-04473-PLB](https://nearbypermits.com/boulder/permit/PMT2007-04473-PLB/) | | Oct 15, 2007 | Mechanical (HVAC) | Tenant remodel Suite 300. 4345 SF. No change in plumbing fixture. | $15,000 | [PMT2007-04473-MEC](https://nearbypermits.com/boulder/permit/PMT2007-04473-MEC/) | | Oct 15, 2007 | Electrical | Tenant remodel Suite 300. 4345 SF. No change in plumbing fixture. | $20,000 | [PMT2007-04473-ELE](https://nearbypermits.com/boulder/permit/PMT2007-04473-ELE/) | | Oct 15, 2007 | Alteration or repair | Tenant remodel Suite 300. 4345 SF. No change in plumbing fixture. | $100,000 | [PMT2007-04473](https://nearbypermits.com/boulder/permit/PMT2007-04473/) | | Jul 25, 2006 | Electrical | Tenant remodel of approx. 700 sf to remoce interior partition walls and add interior doors, windows and partition walls. Removing electrical outlests in walls being removed. No mechanical or plumbing. | $300 | [PMT2006-02995-ELE](https://nearbypermits.com/boulder/permit/PMT2006-02995-ELE/) | | Jul 25, 2006 | Alteration or repair | Tenant remodel of approx. 700 sf to remoce interior partition walls and add interior doors, windows and partition walls. Removing electrical outlests in walls being removed. No mechanical or plumbing. | $2,500 | [PMT2006-02995](https://nearbypermits.com/boulder/permit/PMT2006-02995/) | | Jun 20, 2006 | Roofing | Remove existing shingles and re-roof with Grand Manor Shangle asphalt roofing, colonial slate in color. Per approval of Landmark Alteration Certificate. | $10,630 | [PMT2006-02405-RFG](https://nearbypermits.com/boulder/permit/PMT2006-02405-RFG/) | | May 20, 2005 | Electrical | Interior non structural changes to existing office space.Change wall locations. Two new doors. | $900 | [PMT2005-01931-ELE](https://nearbypermits.com/boulder/permit/PMT2005-01931-ELE/) | | May 20, 2005 | Alteration or repair | Interior non structural changes to existing office space.Change wall locations. Two new doors. | $13,730 | [PMT2005-01931](https://nearbypermits.com/boulder/permit/PMT2005-01931/) | | May 20, 2002 | Sign | Install 1 externally illuminated wall sign for "Merrill Lynch". | $2,800 | [PMT2001-00537-SGN](https://nearbypermits.com/boulder/permit/PMT2001-00537-SGN/) | | May 20, 2002 | Electrical | Install 1 externally illuminated wall sign for "Merrill Lynch". | Not listed | [PMT2001-00537-ELE](https://nearbypermits.com/boulder/permit/PMT2001-00537-ELE/) | | Nov 28, 2001 | New building | Awning for the Chop House Restaurant. | $21,169 | [PMT2001-05067](https://nearbypermits.com/boulder/permit/PMT2001-05067/) | | Aug 30, 2001 | Electrical | Construct new patio deck and railing for exterior seating. (ADR2001-00039) | $1,500 | [PMT2001-03635-ELE](https://nearbypermits.com/boulder/permit/PMT2001-03635-ELE/) | | Aug 30, 2001 | Alteration or repair | Construct new patio deck and railing for exterior seating. (ADR2001-00039) | $15,000 | [PMT2001-03635](https://nearbypermits.com/boulder/permit/PMT2001-03635/) | | Aug 22, 2001 | Fire systems | Fire Alarm System - Chop House | $3,000 | [PMT2001-03686-FIR](https://nearbypermits.com/boulder/permit/PMT2001-03686-FIR/) | | Aug 7, 2001 | Fire systems | Fire Sprinkler System - Chop House | $2,571 | [PMT2001-03410-FIR](https://nearbypermits.com/boulder/permit/PMT2001-03410-FIR/) | | Jul 12, 2001 | Fire systems | Fire Suppression System | $1,762 | [PMT2001-03156-FIR](https://nearbypermits.com/boulder/permit/PMT2001-03156-FIR/) | | Jul 12, 2001 | Plumbing | Tenant finish new restaurant - The Chop House - Boulder, ground level, east side of structure. Add mezzanine above bar (+ 386.75 sq. ft.) Add beer cooler (80 sq. ft.) and Food cooler (235.75 sq. ft.) in detached accessory buildings adjacent alley (see minor modification to site review). Outdoor pati | $53,850 | [PMT2001-01361-PLB](https://nearbypermits.com/boulder/permit/PMT2001-01361-PLB/) | | Jul 12, 2001 | Mechanical (HVAC) | Tenant finish new restaurant - The Chop House - Boulder, ground level, east side of structure. Add mezzanine above bar (+ 386.75 sq. ft.) Add beer cooler (80 sq. ft.) and Food cooler (235.75 sq. ft.) in detached accessory buildings adjacent alley (see minor modification to site review). Outdoor pati | $84,500 | [PMT2001-01361-MEC](https://nearbypermits.com/boulder/permit/PMT2001-01361-MEC/) | | Jul 12, 2001 | Electrical | Tenant finish new restaurant - The Chop House - Boulder, ground level, east side of structure. Add mezzanine above bar (+ 386.75 sq. ft.) Add beer cooler (80 sq. ft.) and Food cooler (235.75 sq. ft.) in detached accessory buildings adjacent alley (see minor modification to site review). Outdoor pati | $88,654 | [PMT2001-01361-ELE](https://nearbypermits.com/boulder/permit/PMT2001-01361-ELE/) | | Jul 12, 2001 | Alteration or repair | Tenant finish new restaurant - The Chop House - Boulder, ground level, east side of structure. Add mezzanine above bar (+ 386.75 sq. ft.) Add beer cooler (80 sq. ft.) and Food cooler (235.75 sq. ft.) in detached accessory buildings adjacent alley (see minor modification to site review). Outdoor pati | $400,000 | [PMT2001-01361](https://nearbypermits.com/boulder/permit/PMT2001-01361/) | | Mar 27, 2001 | Fire systems | Fire Sprinkler System | $1,980 | [PMT2001-01103-FIR](https://nearbypermits.com/boulder/permit/PMT2001-01103-FIR/) | | Jan 23, 2001 | Fire systems | Fire Alarm System - 2nd and 3rd floor | $2,000 | [PMT2001-00251-FIR](https://nearbypermits.com/boulder/permit/PMT2001-00251-FIR/) | | Dec 28, 2000 | Fire systems | Fire Sprinkler system - 3rd floor | $4,375 | [PMT2000-05129-FIR](https://nearbypermits.com/boulder/permit/PMT2000-05129-FIR/) | | Nov 29, 2000 | Plumbing | Tenant finish on second and third floor. | $9,600 | [PMT2000-04491-PLB](https://nearbypermits.com/boulder/permit/PMT2000-04491-PLB/) | | Nov 29, 2000 | Mechanical (HVAC) | Tenant finish on second and third floor. | $68,000 | [PMT2000-04491-MEC](https://nearbypermits.com/boulder/permit/PMT2000-04491-MEC/) | | Nov 29, 2000 | Electrical | Tenant finish on second and third floor. | $80,000 | [PMT2000-04491-ELE](https://nearbypermits.com/boulder/permit/PMT2000-04491-ELE/) | | Nov 29, 2000 | Alteration or repair | Tenant finish on second and third floor. | $330,000 | [PMT2000-04491](https://nearbypermits.com/boulder/permit/PMT2000-04491/) | | Nov 21, 2000 | Fire systems | Fire alarm - Tenant finish - Merrill Lynch | $5,800 | [PMT2000-04264-FIR](https://nearbypermits.com/boulder/permit/PMT2000-04264-FIR/) | | Oct 20, 2000 | Sign | Install new wall sign for Merril Lynch | $2,800 | [PMT2000-03754-SGN](https://nearbypermits.com/boulder/permit/PMT2000-03754-SGN/) | | Sep 21, 2000 | Fire systems | Fire Sprinkler Tenant finish - 2nd and 3rd floor (law firm) | $8,300 | [PMT2000-03861-FIR](https://nearbypermits.com/boulder/permit/PMT2000-03861-FIR/) | | Sep 19, 2000 | Alteration or repair | New awnings, also see revocable permit No RP00019 | Not listed | [PMT2000-03534-AWN](https://nearbypermits.com/boulder/permit/PMT2000-03534-AWN/) | | Aug 31, 2000 | Fire systems | Fire Alarm system - 2nd and 3rd floor | $5,431 | [PMT2000-03585-FIR](https://nearbypermits.com/boulder/permit/PMT2000-03585-FIR/) | | Aug 23, 2000 | Fire systems | Fire Sprinkler System - 1st floor (Merrill Lynch) | $5,600 | [PMT2000-03478-FIR](https://nearbypermits.com/boulder/permit/PMT2000-03478-FIR/) | | Aug 11, 2000 | Plumbing | Tenant finish - 1st floor | $30,000 | [PMT2000-01631-PLB](https://nearbypermits.com/boulder/permit/PMT2000-01631-PLB/) | | Aug 11, 2000 | Mechanical (HVAC) | Tenant finish - 1st floor | $200,000 | [PMT2000-01631-MEC](https://nearbypermits.com/boulder/permit/PMT2000-01631-MEC/) | | Aug 11, 2000 | Electrical | Tenant finish - 1st floor | $200,000 | [PMT2000-01631-ELE](https://nearbypermits.com/boulder/permit/PMT2000-01631-ELE/) | | Aug 11, 2000 | Alteration or repair | Tenant finish - 1st floor | $900,000 | [PMT2000-01631](https://nearbypermits.com/boulder/permit/PMT2000-01631/) | | Jun 30, 2000 | Fire systems | Fire sprinkler tenant finish part. 2nd and 3rd floor | $9,867 | [PMT2000-02666-FIR](https://nearbypermits.com/boulder/permit/PMT2000-02666-FIR/) | | Jun 19, 2000 | Plumbing | Tenant finish, second and third floor, one half floor area on each floor | $14,000 | [PMT2000-02005-PLB](https://nearbypermits.com/boulder/permit/PMT2000-02005-PLB/) | | Jun 19, 2000 | Mechanical (HVAC) | Tenant finish, second and third floor, one half floor area on each floor | $90,000 | [PMT2000-02005-MEC](https://nearbypermits.com/boulder/permit/PMT2000-02005-MEC/) | | Jun 19, 2000 | Alteration or repair | Tenant finish, second and third floor, one half floor area on each floor | Not listed | [PMT2000-02005-FLD](https://nearbypermits.com/boulder/permit/PMT2000-02005-FLD/) | | Jun 19, 2000 | Electrical | Tenant finish, second and third floor, one half floor area on each floor | $180,000 | [PMT2000-02005-ELE](https://nearbypermits.com/boulder/permit/PMT2000-02005-ELE/) | | Jun 19, 2000 | Alteration or repair | Tenant finish, second and third floor, one half floor area on each floor | $844,960 | [PMT2000-02005](https://nearbypermits.com/boulder/permit/PMT2000-02005/) | | Jun 9, 2000 | New building | Install 2 new four stop 2500 lb capacity elevators. | $84,084 | [PMT2000-02361](https://nearbypermits.com/boulder/permit/PMT2000-02361/) | | Apr 25, 2000 | Fire systems | Install fire sprinkler system | $44,187 | [PMT2000-01570-FIR](https://nearbypermits.com/boulder/permit/PMT2000-01570-FIR/) | | Nov 17, 1999 | Electrical | Temp const power. | Not listed | [PMT1999-09320-ELE](https://nearbypermits.com/boulder/permit/PMT1999-09320-ELE/) | | Nov 17, 1999 | Alteration or repair | Landscaping and sitework. | Not listed | [PMT1999-09319](https://nearbypermits.com/boulder/permit/PMT1999-09319/) | | Nov 17, 1999 | Plumbing | New core and shell. Combines electrical #999316, plumbing #999317, and mechanical #999318 with general permit. | $35,000 | [PMT1999-09315-PLB](https://nearbypermits.com/boulder/permit/PMT1999-09315-PLB/) | | Nov 17, 1999 | Mechanical (HVAC) | New core and shell. Combines electrical #999316, plumbing #999317, and mechanical #999318 with general permit. | $190,000 | [PMT1999-09315-MEC](https://nearbypermits.com/boulder/permit/PMT1999-09315-MEC/) | | Nov 17, 1999 | Electrical | New core and shell. Combines electrical #999316, plumbing #999317, and mechanical #999318 with general permit. | $190,000 | [PMT1999-09315-ELE](https://nearbypermits.com/boulder/permit/PMT1999-09315-ELE/) | | Nov 17, 1999 | New building | New core and shell. Combines electrical #999316, plumbing #999317, and mechanical #999318 with general permit. | $2,319,700 | [PMT1999-09315](https://nearbypermits.com/boulder/permit/PMT1999-09315/) | ## More on this street Other addresses on Walnut St with permits, nearest house number first: - [854 Walnut St](https://nearbypermits.com/boulder/address/854-walnut-st/): newest permit May 27, 2026 - [848 Walnut St](https://nearbypermits.com/boulder/address/848-walnut-st/): newest permit Jun 22, 2026 - [1002 Walnut St](https://nearbypermits.com/boulder/address/1002-walnut-st/): newest permit Dec 10, 2025 - [1011 Walnut St 200](https://nearbypermits.com/boulder/address/1011-walnut-st-200/): newest permit Aug 21, 2026 - [824 Walnut St 46](https://nearbypermits.com/boulder/address/824-walnut-st-46/): newest permit Sep 9, 2026 - [1023 Walnut St](https://nearbypermits.com/boulder/address/1023-walnut-st/): newest permit Feb 25, 2026 - [812 Walnut St](https://nearbypermits.com/boulder/address/812-walnut-st/): newest permit Sep 28, 2026 - [1050 Walnut St](https://nearbypermits.com/boulder/address/1050-walnut-st/): newest permit Nov 18, 2025 - [790 Walnut St B](https://nearbypermits.com/boulder/address/790-walnut-st-b/): newest permit Oct 27, 2025 - [770 Walnut St B](https://nearbypermits.com/boulder/address/770-walnut-st-b/): newest permit Aug 12, 2026 --- Source: Boulder Planning and Development Services permit data (https://www.arcgis.com/home/item.html?id=e3ff6248e4a547bcba31025d2c5c9fee). Checked 2026-10-08 04:53 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/ All 119 permits at this address: https://nearbypermits.com/boulder/address/921-walnut-st/