The law creating the historic Beacon Hill district, passed in 1955, contains an array of provisions, including these:
- Original or historically significant materials and/or architectural features shall be maintained and repaired whenever possible rather than replaced.
- All architectural changes shall be appropriate either to the original style of the building (if it has not been significantly altered) or to its altered style (if it has been significantly altered to reflect characteristics of a later style).
- New openings in facades shall not be allowed.
- Work on a single building shall take into account continuity of the architecture and the historic development of each elevation. Identical features (such as windows, lintels, shutters, paint colors, etc.) should match exactly at all stories such that the building is consistent with its architectural style or styles.