San Antonio, TX Historic Preservation: Historic-Cultural Monuments (2026)

Under Unified Development Code Sec. 35-606, a request for historic landmark designation may be initiated by the property owner, any person, the historic preservation officer, the historic and design review commission (HDRC), the zoning commission or city council, but owner consent is required unless city council first approves a resolution authorizing the process without it. Designated landmarks carry the zoning suffix 'HL' (historic, landmark), while properties designated under earlier ordinances keep the legacy 'HE' (historic, exceptional) or 'HS' (historic, significant) suffixes. Sec. 35-607 sets the eligibility bar: a property must satisfy at least three of ten listed criteria, covering value as a reminder of the community's cultural heritage, association with a significant local, county, state or national event, identification with a person who significantly contributed to the community's development, work by a master builder, designer, architect or landscape architect, distinguishing architectural style, a fine example of a utilitarian structure such as a bridge, acequia, gas station or transportation shelter, unique location or singular physical characteristics, and integrity of location, design, materials and workmanship.

Historic districts need at least two structures within a legally defined boundary that together meet three of the same criteria. Once a property or district is designated, Sec. 35-608 requires a Certificate of Appropriateness before the Department of Development Services can issue a permit for construction, alteration, relocation, demolition, signage, landscaping or parking lot work on the site, with review handled by the HDRC.