(a) A landlord, from time to time, may adopt rules or regulations, however described, concerning the tenant’s use and occupancy of the premises. They are enforceable against the tenant only if:

(1) their purpose 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 the tenants generally;

(2) they are reasonably related to the purpose for which they are adopted;

(3) they apply to all tenants in the premises in a fair manner;

(4) they are sufficiently explicit in their prohibition, direction, or limitation of the tenant’s conduct to fairly inform him of what he must or must not do to comply;

(5) they are not for the purpose of evading the obligations of the landlord;

(6) the tenant has notice of them at the time he enters into the rental agreement, or when they are adopted.

(b) Rules or regulations adopted after a tenant enters into a rental agreement are not valid as to such tenant if the rules or regulations substantially modify the tenant’s bargain and after receiving notice upon adoption of his right to object, the tenant objects in writing to the landlord within thirty days after promulgation.