# Building permits at 4730 Walnut St, Boulder, CO 56 permits on record here. The newest, May 21: Electric water heater Replacement: 2500 watts. 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 | |---|---|---|---|---| | May 21, 2026 | Mechanical (HVAC) | Electric water heater Replacement: 2500 watts, 120 V Any electrical work required beyond a like-for-like replacement of equipment will require an electrical permit for inspection of the electrical scope. PLEASE NOTE: APPLICABLE ONLY TO SYSTEMS WITH FUEL BURNING APPLIANCES: All new plastic glued vent | $1,616 | [MEC2026-00790](https://nearbypermits.com/boulder/permit/MEC2026-00790/) | | Aug 10, 2017 | Electrical | Permit for new site and parking lighting for Tierra Business Center. On same plan set as PMT2017-00771, PMT2017-02754 through PMT2017-02757). | $9,466 | [PMT2017-02753-ELE](https://nearbypermits.com/boulder/permit/PMT2017-02753-ELE/) | | Jul 17, 2015 | Mechanical (HVAC) | Mechanical permit for the replacement of ten RTUs for commerical structure. New units are in identical location, using same penetrations, with a reduced weight as exiting RTUs. | $87,000 | [PMT2015-02961-MEC](https://nearbypermits.com/boulder/permit/PMT2015-02961-MEC/) | | Jun 29, 2015 | Fire systems | Fs - sowl - relocate 9 and add 4 spks | $2,900 | [PMT2015-02548-FIR](https://nearbypermits.com/boulder/permit/PMT2015-02548-FIR/) | | May 14, 2015 | Plumbing | Interior tenant remodel for office space. Scope to include relocation of partition walls, removal of one bath, enlargement of another bath, and remodel of break area. Structural modifications are included for new movable partition wall. | $8,000 | [PMT2015-01400-PLB](https://nearbypermits.com/boulder/permit/PMT2015-01400-PLB/) | | May 14, 2015 | Mechanical (HVAC) | Interior tenant remodel for office space. Scope to include relocation of partition walls, removal of one bath, enlargement of another bath, and remodel of break area. Structural modifications are included for new movable partition wall. | $28,000 | [PMT2015-01400-MEC](https://nearbypermits.com/boulder/permit/PMT2015-01400-MEC/) | | May 14, 2015 | Electrical | Interior tenant remodel for office space. Scope to include relocation of partition walls, removal of one bath, enlargement of another bath, and remodel of break area. Structural modifications are included for new movable partition wall. | $35,000 | [PMT2015-01400-ELE](https://nearbypermits.com/boulder/permit/PMT2015-01400-ELE/) | | May 14, 2015 | Alteration or repair | Interior tenant remodel for office space. Scope to include relocation of partition walls, removal of one bath, enlargement of another bath, and remodel of break area. Structural modifications are included for new movable partition wall. | $250,453 | [PMT2015-01400](https://nearbypermits.com/boulder/permit/PMT2015-01400/) | | Mar 11, 2014 | Fire systems | Fa - radio | $500 | [PMT2014-00821-FIR](https://nearbypermits.com/boulder/permit/PMT2014-00821-FIR/) | | May 2, 2013 | Fire systems | Fs - tf | $944 | [PMT2013-01808-FIR](https://nearbypermits.com/boulder/permit/PMT2013-01808-FIR/) | | Mar 28, 2013 | Plumbing | Suite 110 -- tenant remodel of 1,251 sf to create technical offices, accessible restrooms and breakroom for an energy monitoring company -- to include software development and hardware testing areas. | $9,995 | [PMT2013-01178-PLB](https://nearbypermits.com/boulder/permit/PMT2013-01178-PLB/) | | Mar 28, 2013 | Mechanical (HVAC) | Suite 110 -- tenant remodel of 1,251 sf to create technical offices, accessible restrooms and breakroom for an energy monitoring company -- to include software development and hardware testing areas. | $1,375 | [PMT2013-01178-MEC](https://nearbypermits.com/boulder/permit/PMT2013-01178-MEC/) | | Mar 28, 2013 | Electrical | Suite 110 -- tenant remodel of 1,251 sf to create technical offices, accessible restrooms and breakroom for an energy monitoring company -- to include software development and hardware testing areas. | $5,000 | [PMT2013-01178-ELE](https://nearbypermits.com/boulder/permit/PMT2013-01178-ELE/) | | Mar 28, 2013 | Alteration or repair | Suite 110 -- tenant remodel of 1,251 sf to create technical offices, accessible restrooms and breakroom for an energy monitoring company -- to include software development and hardware testing areas. | $90,710 | [PMT2013-01178](https://nearbypermits.com/boulder/permit/PMT2013-01178/) | | Nov 21, 2012 | Fire systems | Fs - tf - add and relocate | $13,700 | [PMT2012-05588-FIR](https://nearbypermits.com/boulder/permit/PMT2012-05588-FIR/) | | Oct 11, 2012 | Plumbing | Tenant remodel in Suite 201 for Sketchup. Scope of work includes installation of non-bearing office walls, accessible bathrooms, associated electrical, mechanical and plumbing. | $29,600 | [PMT2012-04294-PLB](https://nearbypermits.com/boulder/permit/PMT2012-04294-PLB/) | | Oct 11, 2012 | Mechanical (HVAC) | Tenant remodel in Suite 201 for Sketchup. Scope of work includes installation of non-bearing office walls, accessible bathrooms, associated electrical, mechanical and plumbing. | $64,810 | [PMT2012-04294-MEC](https://nearbypermits.com/boulder/permit/PMT2012-04294-MEC/) | | Oct 11, 2012 | Electrical | Tenant remodel in Suite 201 for Sketchup. Scope of work includes installation of non-bearing office walls, accessible bathrooms, associated electrical, mechanical and plumbing. | $92,519 | [PMT2012-04294-ELE](https://nearbypermits.com/boulder/permit/PMT2012-04294-ELE/) | | Oct 11, 2012 | Alteration or repair | Tenant remodel in Suite 201 for Sketchup. Scope of work includes installation of non-bearing office walls, accessible bathrooms, associated electrical, mechanical and plumbing. | $393,690 | [PMT2012-04294](https://nearbypermits.com/boulder/permit/PMT2012-04294/) | | Jun 19, 2012 | Demolition | Suite 110: Interior non-structural demolition of former technical office to remove non-bearing walls and associated finishes to open space for future remodel through separate permit. No occupancy until completion of separate remodel permit. | Not listed | [PMT2012-02959-DEM](https://nearbypermits.com/boulder/permit/PMT2012-02959-DEM/) | | Nov 17, 2011 | Demolition | Suite 200 -- Demolition of interior partition walls to return area to a "core & shell" configuration.. No occupancy of suite allowed unless separate tenant remodel permit is obtained.. | Not listed | [PMT2011-05047-DEM](https://nearbypermits.com/boulder/permit/PMT2011-05047-DEM/) | | Sep 14, 2009 | Fire systems | Scope of Work Letter For Slipstream Sports | $600 | [PMT2009-03609-FIR](https://nearbypermits.com/boulder/permit/PMT2009-03609-FIR/) | | May 4, 2009 | Roofing | Roofing Partial Tear off and Overlay | $51,218 | [PMT2009-01498-RFG](https://nearbypermits.com/boulder/permit/PMT2009-01498-RFG/) | | Sep 13, 2006 | Fire systems | Fire Sprinkler System- Crosstrees | $200 | [PMT2006-03545-FIR](https://nearbypermits.com/boulder/permit/PMT2006-03545-FIR/) | | Sep 6, 2006 | Addition | Tenant remodel in Unit #123 for Vision Optik including addition of 2 office spaces, no electrical, mechanical, or plumbing work proposed. | Not listed | [PMT2006-03718-FLD](https://nearbypermits.com/boulder/permit/PMT2006-03718-FLD/) | | Sep 6, 2006 | Alteration or repair | Tenant remodel in Unit #123 for Vision Optik including addition of 2 office spaces, no electrical, mechanical, or plumbing work proposed. | $18,000 | [PMT2006-03718](https://nearbypermits.com/boulder/permit/PMT2006-03718/) | | Nov 9, 2005 | Mechanical (HVAC) | Tenant finish remodel 6800 sf adding interior walls. Minor electrical and mechanical. | $2,500 | [PMT2005-04364-MEC](https://nearbypermits.com/boulder/permit/PMT2005-04364-MEC/) | | Nov 9, 2005 | Electrical | Tenant finish remodel 6800 sf adding interior walls. Minor electrical and mechanical. | $2,500 | [PMT2005-04364-ELE](https://nearbypermits.com/boulder/permit/PMT2005-04364-ELE/) | | Nov 9, 2005 | Alteration or repair | Tenant finish remodel 6800 sf adding interior walls. Minor electrical and mechanical. | $15,000 | [PMT2005-04364](https://nearbypermits.com/boulder/permit/PMT2005-04364/) | | Jun 16, 2005 | Sign | Installation of new, non-electric wall sign "office evolution". | $450 | [PMT2005-01542-SGN](https://nearbypermits.com/boulder/permit/PMT2005-01542-SGN/) | | Apr 12, 2005 | Electrical | Tenant remodel on first and second floor fro current tenant. Minor demo on second floor, reconfigure existing office space on first and second floor to create more offices. Tenant is Office Evolution, an existing tenant. | $8,500 | [PMT2005-00973-ELE](https://nearbypermits.com/boulder/permit/PMT2005-00973-ELE/) | | Apr 12, 2005 | Alteration or repair | Tenant remodel on first and second floor fro current tenant. Minor demo on second floor, reconfigure existing office space on first and second floor to create more offices. Tenant is Office Evolution, an existing tenant. | $25,000 | [PMT2005-00973](https://nearbypermits.com/boulder/permit/PMT2005-00973/) | | Mar 26, 2004 | Electrical | Electric work associated with PMT2004-00488 for the interior remodel of an existing space. | $60,000 | [PMT2004-00614-ELE](https://nearbypermits.com/boulder/permit/PMT2004-00614-ELE/) | | Mar 25, 2004 | Electrical | Tenant remodel for office space, Unit #202, to remove existing walls and install new office partition walls. | $4,000 | [PMT2004-01065-ELE](https://nearbypermits.com/boulder/permit/PMT2004-01065-ELE/) | | Mar 25, 2004 | Alteration or repair | Tenant remodel for office space, Unit #202, to remove existing walls and install new office partition walls. | $20,000 | [PMT2004-01065](https://nearbypermits.com/boulder/permit/PMT2004-01065/) | | Mar 11, 2004 | Fire systems | Fire sprinkler system | $700 | [PMT2004-00819-FIR](https://nearbypermits.com/boulder/permit/PMT2004-00819-FIR/) | | Feb 17, 2004 | Electrical | Interior commercial tenant remodel for an existing Group B office. The scope includes the installation of 12 electrical outlets. | $200 | [PMT2004-00488-ELE](https://nearbypermits.com/boulder/permit/PMT2004-00488-ELE/) | | Feb 17, 2004 | Alteration or repair | Interior commercial tenant remodel for an existing Group B office. The scope includes the installation of 12 electrical outlets. | $10,000 | [PMT2004-00488](https://nearbypermits.com/boulder/permit/PMT2004-00488/) | | Jan 17, 2001 | Plumbing | Construction of a rest stop adjacent to Boulder Creek path. Work includes less than 50 cubic yards of grading, installation of a drinking fountain, installation of a concrete path and landscaping work. Administrative Review ADR2000-00154 approved December 1, 2000. | $2,000 | [PMT2000-04914-PLB](https://nearbypermits.com/boulder/permit/PMT2000-04914-PLB/) | | Jan 17, 2001 | Grading | Construction of a rest stop adjacent to Boulder Creek path. Work includes less than 50 cubic yards of grading, installation of a drinking fountain, installation of a concrete path and landscaping work. Administrative Review ADR2000-00154 approved December 1, 2000. | Not listed | [PMT2000-04914-GRA](https://nearbypermits.com/boulder/permit/PMT2000-04914-GRA/) | | Jan 17, 2001 | Grading | Construction of a rest stop adjacent to Boulder Creek path. Work includes less than 50 cubic yards of grading, installation of a drinking fountain, installation of a concrete path and landscaping work. Administrative Review ADR2000-00154 approved December 1, 2000. | Not listed | [PMT2000-04914-FLD](https://nearbypermits.com/boulder/permit/PMT2000-04914-FLD/) | | Jan 17, 2001 | Alteration or repair | Construction of a rest stop adjacent to Boulder Creek path. Work includes less than 50 cubic yards of grading, installation of a drinking fountain, installation of a concrete path and landscaping work. Administrative Review ADR2000-00154 approved December 1, 2000. | $40,000 | [PMT2000-04914](https://nearbypermits.com/boulder/permit/PMT2000-04914/) | | Mar 27, 2000 | Sign | Replace a permanent non-elecrtric wall sign reading "Cisco System". | $425 | [PMT2000-00888-SGN](https://nearbypermits.com/boulder/permit/PMT2000-00888-SGN/) | | Nov 22, 1992 | Alteration or repair | Tenant finish the original general permit number is 925611. | $18,000 | [PMT1992-05611](https://nearbypermits.com/boulder/permit/PMT1992-05611/) | | Sep 12, 1991 | Alteration or repair | Site work the original general permit number is 1587. | Not listed | [PMT1991-01587](https://nearbypermits.com/boulder/permit/PMT1991-01587/) | | Oct 9, 1990 | Electrical | Electrical hook up HVAC rtu | $950 | [PMT1990-R3758-ELE](https://nearbypermits.com/boulder/permit/PMT1990-R3758-ELE/) | | Oct 1, 1990 | Alteration or repair | Ten fnsh. The original general permit number is r3298. | $30,000 | [PMT1990-R3298](https://nearbypermits.com/boulder/permit/PMT1990-R3298/) | | Sep 13, 1990 | Alteration or repair | Ten fnsh. The original general permit number is r3018. | $26,700 | [PMT1990-R3018](https://nearbypermits.com/boulder/permit/PMT1990-R3018/) | | Sep 13, 1990 | Alteration or repair | Ten fnsh. The original general permit number is r3016. | $13,750 | [PMT1990-R3016](https://nearbypermits.com/boulder/permit/PMT1990-R3016/) | | Sep 11, 1990 | Alteration or repair | Ten fnsh. The original general permit number is r3017. | $50,000 | [PMT1990-R3017](https://nearbypermits.com/boulder/permit/PMT1990-R3017/) | | Jul 11, 1990 | Alteration or repair | Core bath. The original general permit number is r1391. | $18,000 | [PMT1990-R1391](https://nearbypermits.com/boulder/permit/PMT1990-R1391/) | | Mar 15, 1990 | Other | Landscape. The original general permit number is p8951. | Not listed | [PMT1990-P8951-FLD](https://nearbypermits.com/boulder/permit/PMT1990-P8951-FLD/) | | Mar 15, 1990 | New building | Landscape. The original general permit number is p8951. | $25,000 | [PMT1990-P8951](https://nearbypermits.com/boulder/permit/PMT1990-P8951/) | | Mar 15, 1990 | New building | Core & shell. The original general permit number is p8950. | Not listed | [PMT1990-P8950-FLD](https://nearbypermits.com/boulder/permit/PMT1990-P8950-FLD/) | | Mar 15, 1990 | New building | Core & shell. The original general permit number is p8950. | $900,000 | [PMT1990-P8950](https://nearbypermits.com/boulder/permit/PMT1990-P8950/) | | Oct 31, 1989 | New building | Ftgs & fdns. The original general permit number is p6472. | $50,000 | [PMT1989-P6472](https://nearbypermits.com/boulder/permit/PMT1989-P6472/) | ## More on this street Other addresses on Walnut St with permits, nearest house number first: - [4745 Walnut St](https://nearbypermits.com/boulder/address/4745-walnut-st/): newest permit Aug 11, 2025 - [4760 Walnut St](https://nearbypermits.com/boulder/address/4760-walnut-st/): newest permit Nov 19, 2024 - [4765 Walnut St](https://nearbypermits.com/boulder/address/4765-walnut-st/): newest permit Sep 24, 2025 - [4775 Walnut St](https://nearbypermits.com/boulder/address/4775-walnut-st/): newest permit Mar 17, 2026 - [3750 Walnut St](https://nearbypermits.com/boulder/address/3750-walnut-st/): newest permit Dec 20, 2024 - [3720 Walnut St](https://nearbypermits.com/boulder/address/3720-walnut-st/): newest permit Sep 15, 2026 - [3333 Walnut St](https://nearbypermits.com/boulder/address/3333-walnut-st/): newest permit Nov 17, 2025 - [3300 Walnut St](https://nearbypermits.com/boulder/address/3300-walnut-st/): newest permit Jun 2, 2025 - [3250 Walnut St](https://nearbypermits.com/boulder/address/3250-walnut-st/): newest permit May 16, 2025 - [3201 Walnut St](https://nearbypermits.com/boulder/address/3201-walnut-st/): newest permit Nov 18, 2025 --- Source: Boulder Planning and Development Services permit data (https://www.arcgis.com/home/item.html?id=e3ff6248e4a547bcba31025d2c5c9fee). Checked 2026-10-06 15:21 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/ All 56 permits at this address: https://nearbypermits.com/boulder/address/4730-walnut-st/