(B) The Planning Commission shall be governed by the following considerations in studying a request for such a conditional use permit:
(1) Additions or alterations shall be allowed only for the purpose of relieving overcrowded conditions or to provide adequate living space for a family living on the premises. Such additions or alterations shall not be allowed for the purpose of gaining additional rent or revenue.
(2) The costs of additions or alterations shall not exceed 50% of the fair market value of the existing dwelling. In the absence of a bona fide appraisal of the dwelling, fair market value shall be considered to be five times the current assessed evaluation as shown on the assessment roll. The assessed value of the land shall not be considered.
(3) Additions or alterations shall be allowed only where it can be shown that they would not adversely affect existing development nor impede future development of the subject property or the surrounding area for the uses for which the area is zoned.
(4) The owners shall sign an agreement acceptable to the city and shall be bound by said agreement, to the effect that any additions or alterations made pursuant to this section shall not extend the period of time set forth in this chapter for the termination of nonconforming uses.
('64 Code, § 51.04) (Am. Ord. 358, passed 7-10-69)