# Building permits at 1023 Walnut St 400, Boulder, CO 10 permits on record here. The newest, Feb 25: Replace 100-gallon water tank, like for like. Boulder publishes permits without map coordinates, so this address has no map and no quarter-mile list. ## At this address | Date | Type | Work | Cost | Permit | |---|---|---|---|---| | Feb 25, 2026 | Mechanical (HVAC) | Replace 100-gallon water tank, like for like. PLEASE NOTE: APPLICABLE ONLY TO SYSTEMS WITH FUEL BURNING APPLIANCES: All new plastic glued vents for fuel burning appliances must undergo pressure testing. To facilitate the inspection process, please provide photographic evidence of the pressure test d | $22,755 | [MEC2026-00289](https://nearbypermits.com/boulder/permit/MEC2026-00289/) | | Mar 7, 2018 | Fire systems | Kitchen Hood Suppression System - CORE Flood System in Captive Aire kitchen hood. See PMT2017-01431 for general building permit. | $2,000 | [PMT2017-05657-FIR](https://nearbypermits.com/boulder/permit/PMT2017-05657-FIR/) | | Feb 13, 2018 | Mechanical (HVAC) | Installation of (1) new, 150k BTU, 60 inch dia. outdoor, gas fire pit on the roof top area for Corita Restaurant. Historic approval per HIS2018-00027. | $6,630 | [PMT2018-00579-MEC](https://nearbypermits.com/boulder/permit/PMT2018-00579-MEC/) | | Jan 12, 2018 | Fire systems | FA - Modify existing fire alarm system utilizing the existing Simplex 4100ES FACP for a tenant conversion to a restaurant on the 4th floor. Add duct detectors to new AHU's MAU, and fire/smoke dampers. Add notification devices. Provide modules to monitor flow and tampers and the kitchen hood. See PMT | $7,879 | [PMT2017-04968-FIR](https://nearbypermits.com/boulder/permit/PMT2017-04968-FIR/) | | Nov 29, 2017 | Fire systems | FS - Relocate 27 and add 9 QRSS sprinkler heads to accommodate new restaurant TI. See PMT2017-01431 for general building permit. Suite 400 corrida restaurant. | $2,172 | [PMT2017-05147-FIR](https://nearbypermits.com/boulder/permit/PMT2017-05147-FIR/) | | Oct 10, 2017 | Plumbing | Tenant Finish for a full service penthouse restaurant of 3, 068 sf of interior space including commercial kitchen area, dining room, bar area, and restroom facilities. Includes associated MEP. Refer to LUR2016-00087 for Use Review (associated with rooftop restaurant, pending at time of PMT review) a | $55,000 | [PMT2017-01431-PLB](https://nearbypermits.com/boulder/permit/PMT2017-01431-PLB/) | | Oct 10, 2017 | Mechanical (HVAC) | Tenant Finish for a full service penthouse restaurant of 3, 068 sf of interior space including commercial kitchen area, dining room, bar area, and restroom facilities. Includes associated MEP. Refer to LUR2016-00087 for Use Review (associated with rooftop restaurant, pending at time of PMT review) a | $95,000 | [PMT2017-01431-MEC](https://nearbypermits.com/boulder/permit/PMT2017-01431-MEC/) | | Oct 10, 2017 | Electrical | Tenant Finish for a full service penthouse restaurant of 3, 068 sf of interior space including commercial kitchen area, dining room, bar area, and restroom facilities. Includes associated MEP. Refer to LUR2016-00087 for Use Review (associated with rooftop restaurant, pending at time of PMT review) a | $75,000 | [PMT2017-01431-ELE](https://nearbypermits.com/boulder/permit/PMT2017-01431-ELE/) | | Oct 10, 2017 | Alteration or repair | Tenant Finish for a full service penthouse restaurant of 3, 068 sf of interior space including commercial kitchen area, dining room, bar area, and restroom facilities. Includes associated MEP. Refer to LUR2016-00087 for Use Review (associated with rooftop restaurant, pending at time of PMT review) a | $875,000 | [PMT2017-01431](https://nearbypermits.com/boulder/permit/PMT2017-01431/) | | Sep 29, 2016 | Plumbing | Permit for plumbing work prior to restaurant tenant finish on fourth floor of 1023 Walnut. Work scope is for penetrations through third floor tenant space for plumbing facilities of restaurant above. | $40,000 | [PMT2016-04459-PLB](https://nearbypermits.com/boulder/permit/PMT2016-04459-PLB/) | ## Zoning requests nearby We don't list zoning cases for Boulder yet. Look them up on the city's Board of Zoning Adjustment page: https://bouldercolorado.gov/government/board-commission/board-zoning-adjustment ## More on this street Other addresses on Walnut St with permits, nearest house number first: - [1011 Walnut St 200](https://nearbypermits.com/boulder/address/1011-walnut-st-200/): newest permit Aug 21, 2026 - [1002 Walnut St](https://nearbypermits.com/boulder/address/1002-walnut-st/): newest permit Dec 10, 2025 - [1050 Walnut St](https://nearbypermits.com/boulder/address/1050-walnut-st/): newest permit Nov 18, 2025 - [921 Walnut St](https://nearbypermits.com/boulder/address/921-walnut-st/): newest permit Aug 5, 2026 - [1175 Walnut St](https://nearbypermits.com/boulder/address/1175-walnut-st/): newest permit Oct 31, 2025 - [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 - [824 Walnut St 46](https://nearbypermits.com/boulder/address/824-walnut-st-46/): newest permit Sep 9, 2026 - [812 Walnut St](https://nearbypermits.com/boulder/address/812-walnut-st/): newest permit Sep 28, 2026 - [790 Walnut St B](https://nearbypermits.com/boulder/address/790-walnut-st-b/): newest permit Oct 27, 2025 --- Source: Boulder Planning and Development Services permit data (https://www.arcgis.com/home/item.html?id=e3ff6248e4a547bcba31025d2c5c9fee). Checked 2026-10-09 11:15 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/ All 10 permits at this address: https://nearbypermits.com/boulder/address/1023-walnut-st-400/