Any lawful structure which exists prior to the date of adoption of the Development Code, but which could not be erected under the terms of this Code may lawfully remain; provided that, the structure shall not be:
(A) Enlarged or altered in any way which increases its nonconformity;
(B) Relocated unless, after relocation, it will conform to all the regulations of the zoning district in which it is located; and
(C) Reconstructed, following destruction or damage by any means, if the village staff determines that the cost of the reconstruction exceeds 50% of the structure's market value at the time of loss, unless after reconstruction the structure will conform to all applicable regulations of the zoning district in which it is located; in the event that the village staff determines the estimated cost of reconstruction is 50% or less than the structure's market value at the time of loss, repairs or reconstruction shall be permitted; provided, the work starts within six months from the date the damage occurred and is diligently prosecuted to completion; the village staff may require the owner of the damaged structure to provide the reconstruction cost estimate made by a bona fide construction contractor and the structure's market value at the time of loss as determined by a licensed real estate appraiser.