Based on the observation that one-sided and incorrect arguments in favor of increasing the burden for homeowners predominate in the discussion about possible increases in the burden, the ROZ (Council for Real Estate Affairs) gives its opinion about the alleged skewed housing costs development, the tax deductibility of mortgage interest, the rental value lump sum and the transfer tax.~Conclusions and recommendations of the ROZ include that: 1. limiting the mortgage interest deduction will mainly dup the lower and middle-income group, as will the tax-credit system advocated by the Labour Party; 2. the actual rental value of a home is at a maximum of 1.5%, as a result of which the increase in the rental value lump sum as of 1-1-1990 is already excessive.