# Mechanical (HVAC) permit BCCM-25-003529 at 811 Cathedral St, Baltimore

Baltimore Department of Housing and Community Development permit BCCM-25-003529: issued Apr 20, 2026 for mechanical (hvac) work at 811 Cathedral St. SANTUARY SYSTEM REPLACEMENT: INSTALL A 30-TON AIR CONDITIONING UNIT WITH 400,000 BTU DUCT HEATER; UNIT ON ROOF; RECONNECTING TO ALL EXISTING DUCT AND CONNECTIONS Comments HVAC System Replacement The proposed work includes the replacement of two existing HVAC systems equipment located on the roof and within the undercroft. Installation of a new 30-ton air conditioning unit with an integrated 400,000 BTU duct heater. The unit will be located on the roof in the same general location as the existing equipment. Work includes reconnecting the new system to all existing ductwork and mechanical connections. Additional HVAC Replacement: Replacement of the existing HVAC system located in the undercroft. The new system shall be installed within the existing footprint and connected to existing ductwork and utilities. All work shall be limited to in-kind replacement and mechanical upgrades. No alterations to the building s exterior appearance, roof profile, or historic materials beyond what is necessary for equipment replacement and reconnection are permitted.

- Permit number: BCCM-25-003529
- Issued: Apr 20, 2026
- Type of work: Mechanical (HVAC) (city: Commercial)
- Status: Issued (city: not listed)
- Reported cost: $80,000
- ZIP code: 21201 (derived from location)
- All permits at this address: https://nearbypermits.com/baltimore/address/811-cathedral-st/

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Source: Baltimore Department of Housing and Community Development permit data (https://www.arcgis.com/home/item.html?id=189e6d1c65df4e13b38c0027cee574f6), City of Baltimore, CC BY 3.0 (https://creativecommons.org/licenses/by/3.0/). Checked 2026-10-09 12:09 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/

Every permit at 811 Cathedral St: https://nearbypermits.com/baltimore/address/811-cathedral-st/