Cambridge, MA Historic Preservation: Historic-Cultural Monuments (2026)

Under Cambridge Code of Ordinances Section 2.78.180(A), the Historical Commission may recommend landmark designation for any property "being or containing a place, structure, feature or object" it finds importantly associated with historic persons or events, or with the city's broader cultural, political, economic or social history, or that is independently significant architecturally. Designation starts with a petition: any 30 registered voters can ask the Commission to initiate, amend or rescind a landmark designation (Section 2.78.180(D)). The Commission must hold a preliminary hearing within 60 days of the petition, commission an investigation and report, and then hold a public hearing on at least 14 days' notice, mailed to the owner and to every abutting registered voter and property owner.

If a petition is rejected, the Commission cannot reconsider the same designation for two years. Designation itself is made "by order of the City Council" (Section 2.78.180(F)) and takes effect only once a map of the landmark's boundaries is filed with the Council and recorded at the Middlesex South Registry of Deeds (Section 2.78.180(G)). Once accepted, a designation petition freezes building permits: no permit for new construction or exterior alteration on the property can issue until the Commission reviews it as if already a designated landmark, for up to one year while the petition is pending (Section 2.78.180(I)).

After designation, Section 2.78.210 requires a certificate of appropriateness, nonapplicability, or hardship from the Historical Commission before any exterior alteration, new construction, or demolition permit affecting a landmark can be issued. Ordinary maintenance and repair that does not change design, material or outward appearance is exempt (Section 2.78.200). Anyone aggrieved by a landmark designation can appeal to Massachusetts Superior Court within 30 days (Section 2.78.240).