adm. conserv’hist. (Advisory board which recommends to local authorities the designation of historic buildings and districts; in U.S., a local government body created by local ordinance to review application by property owners to change, demolish, or move a locally designated historic landmark or a building within a locally designated historic district. Decisions by a commission are in the form of a “Certificate of Appropriateness”, issuance of which is a condition precedent to the granting of other required permits such as a building, zoning, or occupancy permits. Commissions are normally limited to the review of exterior building features; they may occasionally also have survey and decisions of such commissions varies widely according to authorizing legislation in each of the 50 states and the preferences of the local government; in U.K., the conservation of historic monuments and sites is governed by the Planning [Listed Buildings and Conservation Areas] Act 1990; ► State Historic...