Historic preservation review is required for buildings over 50 years old that are not designated as part of an individual landmark or historic district when work proposed meets the definition of “Demolition (Historic) in Section 9-16 Definitions, B.R.C. 1981. This includes:
- Removing more than 50% of the roof, as measured in plan;
- Removing more than 50% of the exterior walls;
- Removing any portion of a street-facing wall. This includes constructing a wall in front of a street-facing wall and removing or concealing the exterior wall finish, such as stucco or siding.
A common misconception is that review is required if more than 50% of a street-facing wall is proposed for demolition. The 50% calculation is for the portion of the roof or total exterior walls to be removed; removal of any portion of a street-facing wall, including enlarging window and door openings or removing an enclosed porch, requires historic preservation review.
For a property designated as an individual landmark or located within a historic district, review is required through a Landmark Alteration Certificate (LAC). To find out if a property is landmarked or in a historic district, refer to the Map of Historic Districts and Landmarks. For information on the review process, application and criteria, please visit the Landmark Alteration Certificate webpage.