 Other reforms aimed at improving tenants' rights included protection against conversion of rental housing into condominiums, the prohibition of the misappropriation of living space, new regulation of the apartment broker system, and a fee scale for engineers and architects.In addition, the income limits for eligibility for social housing were raised and adapted in order of general income trends.A loose form of rent regulation was introduced under the name of "Vergleichmieten" (comparable rents), together with the provision of "for family-friendly housing" freight or rent subsidies to owners of apartments or houses whose ceiling had been adapted to increased expenses or incomes (1970).