# Building permits at 300 Union Ave, Denver, CO Five permits on record here. The newest, Mar 26: Alteration or repair permit, no description from the city. Within a quarter mile, the city has issued no other permits since May 1. ## At this address | Date | Type | Work | Cost | Permit | |---|---|---|---|---| | Mar 26, 2026 | Alteration or repair | | $1,034,137 | [2024-COMMCON-0000206](https://nearbypermits.com/denver/permit/2024-COMMCON-0000206/) | | Mar 26, 2026 | Addition | | $672,984 | [2024-COMMCON-0000205](https://nearbypermits.com/denver/permit/2024-COMMCON-0000205/) | | Mar 4, 2021 | Alteration or repair | | $25,000 | [2021-COMMCON-0000159](https://nearbypermits.com/denver/permit/2021-COMMCON-0000159/) | | Aug 24, 2020 | Alteration or repair | | $644,169 | [2020-COMMCON-0001642](https://nearbypermits.com/denver/permit/2020-COMMCON-0001642/) | | Jun 6, 2018 | Alteration or repair | | $345,154 | [2017-COMMCON-0003202](https://nearbypermits.com/denver/permit/2017-COMMCON-0003202/) | ## Within ΒΌ mi since May 1, 2026 0 permits in the circle. From our copy of the city's data (last 24 months). --- Source: Denver Community Planning and Development permit data (https://www.arcgis.com/home/item.html?id=014a873bf7444a658fc2ea0da7ad0704), City of Denver Open Data Catalog, CC BY 3.0 (https://creativecommons.org/licenses/by/3.0/). Checked 2026-10-07 14:51 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/ Map and all 5 permits at this address: https://nearbypermits.com/denver/address/300-union-ave/