A vertical or horizontal addition to any building, regardless of historic status, must conform to the Residential Design Guidelines.

At CityStructure, our vision is a world where every homeowner has a clear understanding of the development potential of their property. This is why we give you free access to the Untapped Development Potential for any property.

Additions to known historic resources must also meet the Secretary of the Interior's Standards and Guidelines for the Treatment of Historic Properties and any applicable requirements outlined in Article 10 of the Planning Code. Generally, if an addition does not alter, change, obscure, damage, or destroy any character-defining features of a historic resource or building located within a historic district then it will be deemed in conformance. The Planning Department strongly urges project applicants to engage with a Historic Preservation Technical Specialist early in the design process, in order to identify potential limitations.

The CityStructure Report tells you in which historical category falls a property and if you could build additions to the existing building.

How much could you build on your property?

Get an instant free estimate if there is any untapped potential for your property based on the city zoning and state regulations.