“Basic property insurance” for the purposes of this chapter means fire, extended coverage, vandalism, malicious mischief, broad and special form dwelling coverage commonly referred to as DP-2 and DP-3, and sprinkler leakage insurance. It shall also include homeowners package coverages that include dwelling and tenant forms, as well as the general liability coverages for one (1) to four (4) family owner and nonowner occupied dwellings, either by endorsement or as a stand-alone policy. The FAIR Plan shall be authorized to make rate filings using the standard that rates shall not be excessive, inadequate, or unfairly discriminatory, giving due consideration to the past and prospective loss and expense experience for basic property insurance, written in this state, trends in the frequency and severity of losses, the investment income of the FAIR Plan, and such other information as the director of business regulation may require. All rates shall be calculated to be self-supporting consistent with sound actuarial principles. Rates for basic property insurance shall be approved by the department of business regulation, notwithstanding any limits on rate approval authority. Nothing in this section shall be deemed to affect the duty of licensed insurers in the state of Rhode Island to participate, as needed, on a direct basis, in the program pursuant to § 27-33-2 and § 27-33-11 and any rules and regulations promulgated thereunder, and to pay their proportionate share of losses and expenses incurred by the program upon assessment by the program.