Conn. Gen. Stat. § 10-411

(b) Before executing any such assistance agreement under sections 10-410 to 10-415 , inclusive, the department shall require that (1) the owner has developed a comprehensive historic preservation plan, approved by the department, together with specific work plans and specifications; (2) the owner provides payment and performance bonds to assure the completion of the preservation work in an authentic manner satisfactory to the department; (3) the owner has filed with the department a declaration of covenant guaranteeing the preservation of the historical or architectural qualities of the property in perpetuity or for a period approved by the department; (4) the owner receiving funds for the purposes of said sections plans to and can demonstrate an ability to maintain and operate properly the historic structure or landmark for an indefinite period of time and that such owner will open it to the public at reasonable times, free of charge or subject to a reasonable charge as approved by the department; (5) the owner maintains sufficient casualty and liability insurance to render the state harmless in any action arising from the acquisition, relocation, restoration or operation of properties under said sections; and (6) if such historic structure or landmark lies within the boundaries of any historic district, the proposed acquisition, relocation, preservation and restoration has been approved by the local historic district department. Prior to the issuance of payment to the owner or any such assistance agreement, the owner shall file with the town clerk in the municipality in which the property is located, the declaration of covenant referenced in subdivision (3) of this subsection. Such assistance agreement may require that if the owner receiving funds under said sections fails to operate or maintain properly the historic structure or landmark, title to such property may be acquired by the department upon payment to such municipality or private organization of a sum equal to the amount provided by such municipality or private organization in accordance with such assistance agreement.

(c) Federal grants-in-aid shall be administered by the department in accordance with all federal requirements.

(d) The department shall adopt regulations pursuant to chapter 54 for its guidance before making such grants-in-aid or advances. Such regulations shall, among other things, require that the department determine that the historic structure or landmark to be acquired, relocated or restored is an authentic historic structure or landmark as identified in the state register of historic places.