Connecticut General Statutes Title 47A. Landlord and Tenant § 47a-9. Landlord rules and regulations

(a) A landlord, from time to time, may adopt a rule or regulation, however described, concerning the tenant's use and occupancy of the premises. Such rule or regulation is enforceable against the tenant only if (1) the purpose of the rule or regulation is to promote the convenience, safety or welfare of the tenants in the premises, preserve the landlord's property from abusive use or make a fair distribution of services and facilities held out for all the tenants generally; (2) the rule or regulation is reasonably related to the purpose for which it is adopted; (3) the rule or regulation applies to all tenants in the premises in a fair manner; (4) the rule or regulation is sufficiently explicit in its prohibition, direction or limitation of the tenant's conduct to fairly inform him of what he shall or shall not do to comply; and (5) the tenant has notice of the rule or regulation at the time he enters into the rental agreement or when the rule or regulation is adopted.

(b) If a rule or regulation that would result in a substantial modification of the terms of the rental agreement is adopted after the tenant enters into the rental agreement, such rule or regulation is not valid unless the tenant consents to such rule or regulation in writing.