An occupancy permit was filed for a property located at 1801 California St, Denver. This permit is typically required to ensure a building is safe for occupancy and meets all necessary regulations.

The applicant is not specified, and no details about the property's classification or building type were provided. The property's owner and year built are also not specified.

Next steps would involve reviewing the permit and ensuring the property meets all safety and regulatory requirements. The status and expiration date are not specified, so further details may be needed.