A. 
Continuation. Except as otherwise specially provided in this chapter, the lawful nonconforming use of a structure, land or water existing at the time of the adoption or amendment of this chapter may be continued although the use does not conform to the provisions of this chapter; provided, however, that:
(1) 
Only that portion of the land or water in actual use may be so continued, and the structure may not be extended, enlarged, reconstructed, substituted, moved or structurally altered, except when required to do so by law or order or so as to comply with the provisions of this chapter.
(2) 
The total lifetime structural repairs or alterations shall not exceed 50% of the assessed value of the structure at the time of its becoming a nonconforming use unless it is permanently changed to conform to the use provisions of this chapter.
(3) 
Substitution of new equipment may be permitted by the Plan Commission if such equipment will reduce the incompatibility of the nonconforming use with the neighboring use.
B. 
Abolishment or replacement of existing nonconforming use. If such nonconforming use is discontinued or terminated for a period of 12 months, any future use of the structure, land or water shall conform to the provisions of this chapter. Unless restoration is permitted under § 62.23(7)(hc), Wis. Stats., when a nonconforming use or structure is damaged by fire, explosion, flood, the public enemy or other calamity to the extent of more than 50% of its current assessed value, it shall not be restored except so as to comply with the use provisions of this chapter. From the date of adoption of this chapter, a current file of all known nonconforming uses shall be maintained by the Village Clerk-Treasurer, listing the following:[1]
(1) 
Owner's name and address.
(2) 
Use of the structure, land or water.
(3) 
Assessed value at the time of its becoming a nonconforming use.
[1]
Editor's Note: Amended at time of adoption of Code (see Ch. 1, General Provisions, Art. II).
A lawful nonconforming structure existing at the time of the adoption or amendment of this chapter may be continued although its size or location does not conform to the lot width, lot area, yard, height, parking and loading, and access provisions of this chapter. However, it shall not be extended, enlarged, reconstructed, moved or structurally altered except when required to do so by law or order or so as to comply with the provisions of this chapter.
Once a nonconforming use or structure has been changed to conform, it shall not revert back to a nonconforming use or structure. Once the Village Board has permitted the substitution of a more restrictive nonconforming use for an existing nonconforming use, the substituted use shall lose its status as a legal nonconforming use and become subject to all the conditions required by the Village Board.
A lot which does not contain sufficient area to conform to the dimensional requirements of this chapter may be used as a building site for a single-family dwelling upon issuance of a building permit, subject to the following conditions:
A. 
Such use is permitted in the zoning district.
B. 
The lot is on record in the County Register of Deeds office prior to the effective date of this chapter.
C. 
The lot is in separate ownership from abutting lands. If abutting lands and the substandard lot are owned by the same owner, the substandard lot shall not be sold or used without full compliance with the terms of this chapter.
D. 
The sanitary provisions of the County Sanitary Ordinance shall apply to those lots not served by public sewer.