(a) The municipal authority shall have the burden to show that a property is blighted. If the property owner does not allow the authority to conduct an inspection of the property to determine whether it is appropriate to deem the property blighted or unblighted, then it is a rebuttable presumption that the property is blighted.
(b) When any area has been declared to be slum and blighted, pursuant to the provisions of this article, if a private property within that area is found to not be a blighted property, then to condemn the property pursuant to article two, chapter fifty four of the code, the municipal authority must demonstrate, in addition to all other lawful condemnation requirements, that the project or program requiring the clearance of the slum and blighted area:
(1) Cannot proceed without the condemnation of the private property at issue;