# Building permits at 1301 Walnut St, Boulder, CO 79 permits on record here. The newest, Jul 1: Adjust Sprinkler Heads on Level 2 for new Ceilings. 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 | |---|---|---|---|---| | Jul 1, 2026 | Fire systems | Adjust Sprinkler Heads on Level 2 for new Ceilings. Basement Level, Add piping and connect rooms to existing pre-action valve. Add bulk piping for wet system. | $85,000 | [FIR2026-00217](https://nearbypermits.com/boulder/permit/FIR2026-00217/) | | Jun 26, 2026 | Fire systems | Modifications to the existing fire alarm system. | $13,357 | [FIR2026-00214](https://nearbypermits.com/boulder/permit/FIR2026-00214/) | | Apr 8, 2026 | Alteration or repair | 1301 and 1375 Walnut (buildings are connected on lowest level) - 14,969 sf interior renovation of existing office suite and labs. Scope build out consists of new office and lab spaces, updated layout configuration, updated finishes throughout, and updated MEP systems to serve the new spaces and prog | $1,949,413 | [BLD-NRE2025-00199](https://nearbypermits.com/boulder/permit/BLD-NRE2025-00199/) | | Feb 3, 2026 | Alteration or repair | Level 2 concealed connection between existing buildings located on separate properties. A 2' vertical offset between building floor plates requires construction of a new landing and installation of a new wheelchair lift per plans. Minor electrical and HVAC adjustments, no plumbing and no visible cha | $19,665 | [BLD-NRE2025-00070](https://nearbypermits.com/boulder/permit/BLD-NRE2025-00070/) | | Jan 7, 2026 | Alteration or repair | The remodel includes demolition of an existing ATM closet, relocating the ATM and night drop to a new location. | $92,000 | [BLD-NRE2025-00191](https://nearbypermits.com/boulder/permit/BLD-NRE2025-00191/) | | Sep 23, 2024 | Sign | Non Illuminated dimensional letters, mounted to sign pan. | $11,355 | [SGN2024-00081](https://nearbypermits.com/boulder/permit/SGN2024-00081/) | | Apr 9, 2024 | Fire systems | Installing one preaction valve double interlock to protect clean room 027 and PAL 023. A total of 18 new sprinklers and removing the wet branch lines from the same two rooms. (FSR13) | $28,850 | [FIR2024-00128](https://nearbypermits.com/boulder/permit/FIR2024-00128/) | | Feb 20, 2024 | Fire systems | Additions / alterations to the existing fire alarm system basement through fourth floor. The floors are not completely remodeled. There are rooms and areas that are not in contract. See BLD-NRE2023-00120 for general building permit. See FIR2023-00496 for fire sprinkler permit. Swri tenant remodel ba | $30,000 | [FIR2024-00048](https://nearbypermits.com/boulder/permit/FIR2024-00048/) | | Jan 11, 2024 | Fire systems | Additions / alterations to the existing wet pipe fire sprinkler system - adds and relocates for basement, 2nd, 3rd, and 4th floors. The floors are not completely remodeled. There are rooms and areas that are not in contract. See BLD-NRE2023-00120 for general building permit. See FIR2024-00048 for fi | $71,253 | [FIR2023-00496](https://nearbypermits.com/boulder/permit/FIR2023-00496/) | | Oct 26, 2023 | Alteration or repair | Tenant improvements to a core and shell building including the sub-level, levels 2-4 and a small portion of level one for mechanical work. New work includes offices, workspaces and a training room. Office work (b occupancy): 42,481 sf and training room (a-3): 2,186 for a total of 44,667 sf of work. | $7,640,410 | [BLD-NRE2023-00120](https://nearbypermits.com/boulder/permit/BLD-NRE2023-00120/) | | Aug 22, 2023 | Demolition | VOID- 180 days no activity Interior non-structural demolition permit, related to BLD-NRE2023-00120, for an interior office space of the sub-level, 2nd floor, 3rd floor, and 4th floor of 1301 Walnut Street. Demolition plan includes removal of mechanical, electrical, and plumbing systems, as well as a | Not listed | [DEM2023-00054](https://nearbypermits.com/boulder/permit/DEM2023-00054/) | | Jul 24, 2019 | Mechanical (HVAC) | Twitter Phase II - Remodel of an existing technical office for existing tenant | $22,000 | [MEC2019-00811](https://nearbypermits.com/boulder/permit/MEC2019-00811/) | | Jul 24, 2019 | Electrical | Twitter Phase II - Remodel of an existing technical office for existing tenant | $20,000 | [ELE2019-00660](https://nearbypermits.com/boulder/permit/ELE2019-00660/) | | Jul 24, 2019 | Alteration or repair | Twitter Phase II - Remodel of an existing technical office for existing tenant | $198,830 | [BLD-NRE2019-00113](https://nearbypermits.com/boulder/permit/BLD-NRE2019-00113/) | | Jun 11, 2019 | Plumbing | Tenant finish in basement level for administrative office use (software development), approximately 5,927 sf. - | $9,150 | [PLB2019-00198](https://nearbypermits.com/boulder/permit/PLB2019-00198/) | | Jun 11, 2019 | Mechanical (HVAC) | Tenant finish in basement level for administrative office use (software development), approximately 5,927 sf. - | $124,000 | [MEC2019-00513](https://nearbypermits.com/boulder/permit/MEC2019-00513/) | | Jun 11, 2019 | Electrical | Tenant finish in basement level for administrative office use (software development), approximately 5,927 sf. - | $115,900 | [ELE2019-00387](https://nearbypermits.com/boulder/permit/ELE2019-00387/) | | Jun 11, 2019 | Other | Twitter Phase I - Tenant finish in basement level for administrative office use (software development), approximately 5,927 sf. | $252,050 | [BLD-NRE2019-00076](https://nearbypermits.com/boulder/permit/BLD-NRE2019-00076/) | | May 30, 2019 | Fire systems | TI in two phases. Additions/ alterations to existing fire alarm system: 1. Relocate three (3) existing horn/strobes 2. Relocate one (1) existing strobe 3. PROVIDE AND INSTALL FIVE (5) NEW STROBES Work on Phase 2 covered in this permit. See FIR2019-00192 for first phase fire alarm work. See BLD-NRE20 | $3,670 | [FIR2019-00193](https://nearbypermits.com/boulder/permit/FIR2019-00193/) | | May 29, 2019 | Fire systems | TI in two phases. Additions/ alterations to existing fire alarm system: 1. Relocate one (1) existing horn/strobe 2. Provide and install four (4) new horn/strobes 3. Provide and install seven (7) new strobes 4. Provide and install one (1) new booster panel. Work on Phase 1 covered in this permit. See | $5,120 | [FIR2019-00192](https://nearbypermits.com/boulder/permit/FIR2019-00192/) | | May 28, 2019 | Sign | *letter set on (2) raceways "cognizant" "accelerator" | $1,600 | [SGN2019-00038](https://nearbypermits.com/boulder/permit/SGN2019-00038/) | | May 23, 2019 | Fire systems | Add/Relocate fire sprinkler heads to accommodate new wall and ACT ceiling. Work will be done in two phases, but will be done as one design and under one permit. See BLR-NRE2019-00076 and BLD-NRE2019-00113 for general building permits for Phases I & II respectively. Twitter. | $7,500 | [FIR2019-00184](https://nearbypermits.com/boulder/permit/FIR2019-00184/) | | May 16, 2019 | Demolition | Interior non-structural demolition of the basement/garden floor in preparation for work under BLD-NRE2019-00076. | Not listed | [DEM2019-00035](https://nearbypermits.com/boulder/permit/DEM2019-00035/) | | Jan 30, 2019 | Sign | *Installation of one (1) new internally illuminate wall sign. Copy "Cognizant Accelerator". [electronic submittal] | $1,200 | [SGN2018-00131](https://nearbypermits.com/boulder/permit/SGN2018-00131/) | | Jun 14, 2018 | Fire systems | 2nd Floor Tenant Improvement - Fire Alarm | $5,350 | [FIR2018-00108](https://nearbypermits.com/boulder/permit/FIR2018-00108/) | | Jun 4, 2018 | Electrical | Suite B-200: Electrical permit for lighting upgrades and 150 amp panel addition to an existing office tenant suite. | $12,500 | [PMT2018-01204-ELE](https://nearbypermits.com/boulder/permit/PMT2018-01204-ELE/) | | May 15, 2018 | Plumbing | SUITE 200- Tenant Finish of professional office for Cognizant. Scope of work includes parition walls to create conference rooms, server rooms, mother's room, and breakroom with open office space. Scopes includes associated MEPs. | $63,000 | [PMT2018-01055-PLB](https://nearbypermits.com/boulder/permit/PMT2018-01055-PLB/) | | May 15, 2018 | Mechanical (HVAC) | SUITE 200- Tenant Finish of professional office for Cognizant. Scope of work includes parition walls to create conference rooms, server rooms, mother's room, and breakroom with open office space. Scopes includes associated MEPs. | $196,000 | [PMT2018-01055-MEC](https://nearbypermits.com/boulder/permit/PMT2018-01055-MEC/) | | May 15, 2018 | Electrical | SUITE 200- Tenant Finish of professional office for Cognizant. Scope of work includes parition walls to create conference rooms, server rooms, mother's room, and breakroom with open office space. Scopes includes associated MEPs. | $252,000 | [PMT2018-01055-ELE](https://nearbypermits.com/boulder/permit/PMT2018-01055-ELE/) | | May 15, 2018 | Other | SUITE 200- Tenant Finish of professional office for Cognizant Accelerator. Scope of work includes partition walls to create conference rooms, server rooms, mother's room, and break room with open office space. Scope includes associated MEPs.. | $1,086,705 | [PMT2018-01055](https://nearbypermits.com/boulder/permit/PMT2018-01055/) | | Apr 24, 2018 | Fire systems | Add - 27 Relocate - 20 | $8,695 | [FIR2018-00043](https://nearbypermits.com/boulder/permit/FIR2018-00043/) | | Mar 27, 2018 | Plumbing | Fs - es - tf for wencel building (basement & 1st floor) | Not listed | [PMT2016-00028-PLB](https://nearbypermits.com/boulder/permit/PMT2016-00028-PLB/) | | Mar 27, 2018 | Fire systems | Fs - es - tf for wencel building (basement & 1st floor) | $24,366 | [PMT2016-00028-FIR](https://nearbypermits.com/boulder/permit/PMT2016-00028-FIR/) | | Jun 22, 2017 | Plumbing | Suite B03 - First time tenant finish, 450 sq.ft. Scope is all interior, non-structural, and includes furring walls, installation of new ADA compliant break area, new power outlets, new lighting, and new mechanical. Space to remain an open floor plan. | $7,000 | [PMT2017-01793-PLB](https://nearbypermits.com/boulder/permit/PMT2017-01793-PLB/) | | Jun 22, 2017 | Mechanical (HVAC) | Suite B03 - First time tenant finish, 450 sq.ft. Scope is all interior, non-structural, and includes furring walls, installation of new ADA compliant break area, new power outlets, new lighting, and new mechanical. Space to remain an open floor plan. | $28,000 | [PMT2017-01793-MEC](https://nearbypermits.com/boulder/permit/PMT2017-01793-MEC/) | | Jun 22, 2017 | Electrical | Suite B03 - First time tenant finish, 450 sq.ft. Scope is all interior, non-structural, and includes furring walls, installation of new ADA compliant break area, new power outlets, new lighting, and new mechanical. Space to remain an open floor plan. | $32,000 | [PMT2017-01793-ELE](https://nearbypermits.com/boulder/permit/PMT2017-01793-ELE/) | | Jun 22, 2017 | Mechanical (HVAC) | Suite B03 - First time tenant finish, 450 sq.ft. Scope is all interior, non-structural, and includes furring walls, installation of new ADA compliant break area, new power outlets, new lighting, and new mechanical. Space to remain an open floor plan. | $157,000 | [PMT2017-01793](https://nearbypermits.com/boulder/permit/PMT2017-01793/) | | Jun 9, 2017 | Fire systems | Fire Alarm - Unit B03 | $2,450 | [PMT2017-02447-FIR](https://nearbypermits.com/boulder/permit/PMT2017-02447-FIR/) | | Apr 13, 2017 | Fire systems | FA - Install three new horn strobes and two new strobes to accomodate TI. See PMT 2017-00076 for general buildling permit. Elevations Credit Union on first level. | $3,200 | [PMT2017-01452-FIR](https://nearbypermits.com/boulder/permit/PMT2017-01452-FIR/) | | Apr 13, 2017 | Sign | SIGN - Installation of (2) new, permanent, electric, illuminated internally, wall signs. - "Elevations" | $7,246 | [PMT2017-01255-SGN](https://nearbypermits.com/boulder/permit/PMT2017-01255-SGN/) | | Mar 1, 2017 | Fire systems | Fa - cbre, unit 200 | $600 | [PMT2017-00598-FIR](https://nearbypermits.com/boulder/permit/PMT2017-00598-FIR/) | | Feb 28, 2017 | Fire systems | Fs - sowl (cbre #b200) | $404 | [PMT2017-00710-FIR](https://nearbypermits.com/boulder/permit/PMT2017-00710-FIR/) | | Feb 28, 2017 | Fire systems | FS - SOWL (Elevations CU - Suite 102) | $1,034 | [PMT2017-00709-FIR](https://nearbypermits.com/boulder/permit/PMT2017-00709-FIR/) | | Feb 9, 2017 | Mechanical (HVAC) | Suite B-200-Tenant finish for CBRE. Scope to include mechanical and electrical. | $28,000 | [PMT2017-00103-MEC](https://nearbypermits.com/boulder/permit/PMT2017-00103-MEC/) | | Feb 9, 2017 | Electrical | Suite B-200-Tenant finish for CBRE. Scope to include mechanical and electrical. | $35,000 | [PMT2017-00103-ELE](https://nearbypermits.com/boulder/permit/PMT2017-00103-ELE/) | | Feb 9, 2017 | Electrical | Suite B-200-Tenant finish for CBRE. Scope to include mechanical and electrical. | $150,000 | [PMT2017-00103](https://nearbypermits.com/boulder/permit/PMT2017-00103/) | | Feb 7, 2017 | Plumbing | Tenant finish for Elevations Credit Union. Scope to include mechanical, electrical, and plumbing. Signage under separate permit. | $32,348 | [PMT2017-00076-PLB](https://nearbypermits.com/boulder/permit/PMT2017-00076-PLB/) | | Feb 7, 2017 | Mechanical (HVAC) | Tenant finish for Elevations Credit Union. Scope to include mechanical, electrical, and plumbing. Signage under separate permit. | $61,490 | [PMT2017-00076-MEC](https://nearbypermits.com/boulder/permit/PMT2017-00076-MEC/) | | Feb 7, 2017 | Electrical | Tenant finish for Elevations Credit Union. Scope to include mechanical, electrical, and plumbing. Signage under separate permit. | $72,700 | [PMT2017-00076-ELE](https://nearbypermits.com/boulder/permit/PMT2017-00076-ELE/) | | Feb 7, 2017 | Sign | Tenant finish for Elevations Credit Union. Scope to include mechanical, electrical, and plumbing. Signage under separate permit. | $534,504 | [PMT2017-00076](https://nearbypermits.com/boulder/permit/PMT2017-00076/) | | Nov 29, 2016 | Fire systems | Fa - es - rel x1 add x1 notification (suite 101) | $862 | [PMT2016-05465-FIR](https://nearbypermits.com/boulder/permit/PMT2016-05465-FIR/) | | Nov 10, 2016 | Fire systems | Fs - sowl - relx7 | $338 | [PMT2016-05215-FIR](https://nearbypermits.com/boulder/permit/PMT2016-05215-FIR/) | | Nov 3, 2016 | Mechanical (HVAC) | Suite 101: Tenant interior remodel of existing office space for new partitions, lighting, power and HVAC distribution, and finishes. | $23,500 | [PMT2016-04750-MEC](https://nearbypermits.com/boulder/permit/PMT2016-04750-MEC/) | | Nov 3, 2016 | Electrical | Suite 101: Tenant interior remodel of existing office space for new partitions, lighting, power and HVAC distribution, and finishes. | $25,575 | [PMT2016-04750-ELE](https://nearbypermits.com/boulder/permit/PMT2016-04750-ELE/) | | Nov 3, 2016 | Alteration or repair | Suite 101: Tenant interior remodel of existing office space for new partitions, lighting, power and HVAC distribution, and finishes. | $105,000 | [PMT2016-04750](https://nearbypermits.com/boulder/permit/PMT2016-04750/) | | Jul 25, 2016 | Sign | Installation of a 30" x 36.75" sign with LED illumination on the west elevation, at a max height not to exceed 25 feet. See his2016-00205. | $1,120 | [PMT2016-03018-SGN](https://nearbypermits.com/boulder/permit/PMT2016-03018-SGN/) | | Jun 15, 2016 | Fire systems | ES - FA - Twitter (Mountain Alarm) | $14,400 | [PMT2016-02616-FIR](https://nearbypermits.com/boulder/permit/PMT2016-02616-FIR/) | | Jun 13, 2016 | Fire systems | ES - FS 3rd and 4th floor TF - Twitter | $15,222 | [PMT2016-02618-FIR](https://nearbypermits.com/boulder/permit/PMT2016-02618-FIR/) | | Jun 10, 2016 | Alteration or repair | Interior remodel of the second floor walls of the office/retail lobby. The remodel involves demolishing the existing gyp. board north & east walls and replacing them with full-height storefront, glazed walls. No MEPs included. | $20,649 | [PMT2016-01962](https://nearbypermits.com/boulder/permit/PMT2016-01962/) | | May 16, 2016 | Plumbing | Tenant finish of third floor, fourth floor, and partial basement for Twitter. Scope includes mechanical, electrical, and plumbing. | $48,500 | [PMT2016-01418-PLB](https://nearbypermits.com/boulder/permit/PMT2016-01418-PLB/) | | May 16, 2016 | Mechanical (HVAC) | Tenant finish of third floor, fourth floor, and partial basement for Twitter. Scope includes mechanical, electrical, and plumbing. | $342,000 | [PMT2016-01418-MEC](https://nearbypermits.com/boulder/permit/PMT2016-01418-MEC/) | | May 16, 2016 | Electrical | Tenant finish of third floor, fourth floor, and partial basement for Twitter. Scope includes mechanical, electrical, and plumbing. | $497,000 | [PMT2016-01418-ELE](https://nearbypermits.com/boulder/permit/PMT2016-01418-ELE/) | | May 16, 2016 | Electrical | Tenant finish of third floor, fourth floor, and partial basement for Twitter. Scope includes mechanical, electrical, and plumbing. | $2,048,486 | [PMT2016-01418](https://nearbypermits.com/boulder/permit/PMT2016-01418/) | | Jan 27, 2016 | Fire systems | Fa - es - radio aes7788f | $600 | [PMT2016-00321-FIR](https://nearbypermits.com/boulder/permit/PMT2016-00321-FIR/) | | Jan 5, 2016 | Fire systems | Fs - sowl - add/relocate 14 spks for new wall and ceiling | $1,313 | [PMT2015-05705-FIR](https://nearbypermits.com/boulder/permit/PMT2015-05705-FIR/) | | Sep 28, 2015 | Electrical | Installation of a 46 kW ballasted PV system in three arrays on the roof of the Wencel Building. Permit issuance letter should be sent to | $157,612 | [PMT2015-04008-ELE](https://nearbypermits.com/boulder/permit/PMT2015-04008-ELE/) | | Jul 30, 2015 | Fire systems | Fs - es - new system for wencel building. Core/shell w/ standpipes only. | $51,372 | [PMT2015-01939-FIR](https://nearbypermits.com/boulder/permit/PMT2015-01939-FIR/) | | Feb 11, 2015 | Fire systems | Fa - system for new commercial building (wencel building) | $30,000 | [PMT2014-05372-FIR](https://nearbypermits.com/boulder/permit/PMT2014-05372-FIR/) | | Dec 1, 2014 | Plumbing | WENCEL BUILDING-New core and shell office building-4 stories above grade with 1 basement level. LUR2013-00053, TEC2014-00029 and TEC2014-00032.-RESUBMITTAL 01/08/15 for building classification change to type II-B construction. Additional RESUBMITTAL 4/2/15 - Minor Modification ADR2015-00041: To revi | $400,000 | [PMT2014-02616-PLB](https://nearbypermits.com/boulder/permit/PMT2014-02616-PLB/) | | Dec 1, 2014 | Mechanical (HVAC) | WENCEL BUILDING-New core and shell office building-4 stories above grade with 1 basement level. LUR2013-00053, TEC2014-00029 and TEC2014-00032.-RESUBMITTAL 01/08/15 for building classification change to type II-B construction. Additional RESUBMITTAL 4/2/15 - Minor Modification ADR2015-00041: To revi | $1,000,000 | [PMT2014-02616-MEC](https://nearbypermits.com/boulder/permit/PMT2014-02616-MEC/) | | Dec 1, 2014 | Electrical | WENCEL BUILDING-New core and shell office building-4 stories above grade with 1 basement level. LUR2013-00053, TEC2014-00029 and TEC2014-00032.-RESUBMITTAL 01/08/15 for building classification change to type II-B construction. Additional RESUBMITTAL 4/2/15 - Minor Modification ADR2015-00041: To revi | $600,000 | [PMT2014-02616-ELE](https://nearbypermits.com/boulder/permit/PMT2014-02616-ELE/) | | Dec 1, 2014 | New building | WENCEL BUILDING-New core and shell office building-4 stories above grade with 1 basement level. LUR2013-00053, TEC2014-00029 and TEC2014-00032.-RESUBMITTAL 01/08/15 for building classification change to type II-B construction. Additional RESUBMITTAL 4/2/15 - Minor Modification ADR2015-00041: To revi | $12,300,000 | [PMT2014-02616](https://nearbypermits.com/boulder/permit/PMT2014-02616/) | | Nov 20, 2014 | Fire systems | Set crane in parking area, utility installations to include 2'' domestic water, 1'' irrigation, 6'' fireline, 6'' sewer & connect storm, extend construction fence to parking area also includes relocating and existing fire hydrant | Not listed | [PMT2014-04984-FIR](https://nearbypermits.com/boulder/permit/PMT2014-04984-FIR/) | | Aug 21, 2014 | Electrical | Temporary construction power in association with PMT2014-02616. Property aka 1900 13th st. | Not listed | [PMT2014-03906-ELE](https://nearbypermits.com/boulder/permit/PMT2014-03906-ELE/) | | Aug 11, 2014 | New building | Shoring system to stabalize the excavation for a new building. Site fencing covered undere associated ROW permit. | $240,870 | [PMT2014-02717](https://nearbypermits.com/boulder/permit/PMT2014-02717/) | | Jan 16, 1998 | New building | Install 2 small satellite antennaes on roof the original general permit number | $120 | [PMT1998-00326](https://nearbypermits.com/boulder/permit/PMT1998-00326/) | | Jun 26, 1996 | Electrical | Electrical electrical on remodel | $3,200 | [PMT1996-04212-ELE](https://nearbypermits.com/boulder/permit/PMT1996-04212-ELE/) | | Jun 25, 1996 | Alteration or repair | Office remodel the original general permit number is 964140. | $15,000 | [PMT1996-04140](https://nearbypermits.com/boulder/permit/PMT1996-04140/) | | May 9, 1990 | Electrical | Electrical MOVE SERVICE | $1,500 | [PMT1990-R0116-ELE](https://nearbypermits.com/boulder/permit/PMT1990-R0116-ELE/) | ## More on this street Other addresses on Walnut St with permits, nearest house number first: - [1300 Walnut St](https://nearbypermits.com/boulder/address/1300-walnut-st/): newest permit Jul 25, 2025 - [1360 Walnut St 103](https://nearbypermits.com/boulder/address/1360-walnut-st-103/): newest permit Sep 4, 2026 - [1375 Walnut St](https://nearbypermits.com/boulder/address/1375-walnut-st/): newest permit May 7, 2026 - [1401 Walnut St](https://nearbypermits.com/boulder/address/1401-walnut-st/): newest permit Aug 7, 2026 - [1175 Walnut St](https://nearbypermits.com/boulder/address/1175-walnut-st/): newest permit Oct 31, 2025 - [1470 Walnut St](https://nearbypermits.com/boulder/address/1470-walnut-st/): newest permit Mar 20, 2026 - [1545 Walnut St](https://nearbypermits.com/boulder/address/1545-walnut-st/): newest permit Jun 9, 2025 - [1050 Walnut St](https://nearbypermits.com/boulder/address/1050-walnut-st/): newest permit Nov 18, 2025 - [1023 Walnut St](https://nearbypermits.com/boulder/address/1023-walnut-st/): newest permit Feb 25, 2026 - [1011 Walnut St 200](https://nearbypermits.com/boulder/address/1011-walnut-st-200/): newest permit Aug 21, 2026 --- Source: Boulder Planning and Development Services permit data (https://www.arcgis.com/home/item.html?id=e3ff6248e4a547bcba31025d2c5c9fee). Checked 2026-10-06 13:54 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/ All 79 permits at this address: https://nearbypermits.com/boulder/address/1301-walnut-st/