Local Landmark Designation and Certificates of Appropriateness

An owner who cannot replace a front door without permission is subject to a municipal ordinance, not to anything federal. Local designation is the only widely used instrument in American preservation law that directly restricts what a private owner may do with private money. Its details vary by jurisdiction, but the architecture of these ordinances is remarkably consistent.

Where the authority comes from

Municipalities regulate historic properties under authority delegated by the state, either through a specific preservation enabling statute or through general zoning and home rule powers. The delegation matters, because a commission can only do what the enabling authority permits. An ordinance that reaches beyond the delegation is vulnerable regardless of how sensible its provisions are.

Commission composition is usually prescribed as well, and it is not decorative. Ordinances typically require a stated number of members with professional qualifications in architecture, history, architectural history, planning, archaeology or a related discipline, with the remainder drawn from the public. Where a jurisdiction cannot fill the professional seats, it is expected to demonstrate that it sought qualified members and to obtain expert advice on applications requiring it. A decision made by an improperly constituted commission is exposed on appeal.

The enabling statute usually prescribes the essential features: what may be designated, who sits on the commission, what notice is required, and what remedies an owner has. Everything else is local drafting. Two towns in the same state can therefore run designation processes that look nothing alike while resting on identical authority.

How a landmark or district is designated

The sequence generally begins with a study describing the property or the proposed district boundary and stating why it meets the ordinance's criteria. Those criteria often echo the National Register criteria, but they are local criteria and a property can qualify locally while failing federally, or the reverse. The relationship between the two systems is set out in the difference between federal listing and local regulation.

Districts require an additional judgment that individual landmarks do not: where the line goes. A boundary that follows a coherent development pattern is defensible. One that stops mid-block because a particular owner objected, or that gerrymanders around a parcel someone wants to redevelop, is the version that gets challenged as arbitrary. Ordinances usually also classify each property in the district as contributing or non-contributing, and that classification determines how strictly the commission reviews later work.

The commission holds a public hearing, receives comment from the owner and others, and makes a recommendation. In most jurisdictions the governing body then adopts the designation by ordinance or resolution, which makes designation a legislative act. A minority of ordinances give the commission final authority. Which model applies determines how the decision can later be attacked.

What the certificate controls

Once a property is designated, a certificate of appropriateness is required before regulated work may proceed. The scope is set by the ordinance and typically covers exterior alteration, new construction within a district, relocation and demolition. Ordinary maintenance and repair, and replacement in kind, are usually exempt, though the definition of in kind causes more disputes than any other clause.

Most ordinances split the work between staff and commission. Minor matters, defined by a list rather than by judgment, are approved administratively within days. Everything else goes on an agenda, and the agenda is the schedule risk, because a commission meeting monthly with a submission deadline weeks ahead can add a substantial delay to a project that discovers the requirement late. Applicants who bring a proposal to a pre-application conference generally lose less time than those who submit and hope.

The commission applies design standards. Many jurisdictions adopt the Secretary of the Interior's Standards for the Treatment of Historic Properties directly; others write local guidelines addressing materials, window openings, roof forms, storefronts, signage and setbacks. Applications generally require drawings, photographs, material specifications and, for a district application, a description of how the proposal relates to neighboring buildings.

Hardship relief and the route out

Ordinances include a hardship provision because a designation that leaves an owner with no economically viable use invites a constitutional challenge. The showing required is usually rigorous: financial records, marketing history, rehabilitation cost estimates, and evidence that the property cannot yield a reasonable return in any permitted use. Self-created hardship, including deterioration the owner allowed, is generally not a basis for relief, which links the hardship inquiry directly to the theory discussed in demolition by neglect and its enforcement.

Local designation also intersects with programs an owner may want. A property that is locally designated but not federally listed does not qualify for the federal credit unless it sits in a certified historic district or is separately certified, a point addressed in the certification steps for the rehabilitation credit. Owners seeking a durable restriction stronger than an ordinance that a later council could repeal sometimes convey a recorded interest instead, described in preservation easements and how long they bind. And where a federal permit or grant touches the same property, the municipal review runs alongside, not instead of, the process explained in the federal consultation sequence.