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 with the provisions of this chapter; provided, however:
(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 Village Board 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. 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 nonconforming uses shall be maintained by the Zoning Administrator, listing the following:
(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.
C. 
Pursuant to § 62.23(7)(hc), Wis. Stats., and notwithstanding any other provision of this chapter, a nonconforming structure damaged or destroyed by violent wind, vandalism, fire, flood, ice, snow, mold or infestation after March 2, 2006, may be restored to, or replaced at, the size, location, and use that it had immediately before the damage or destruction occurred, and no limits may be imposed on the costs of the repair, reconstruction, or improvement of said structure. The size of the structure may be larger than the size it was immediately before the damage or destruction if necessary for the structure to comply with applicable state or federal requirements.
[Added at time of adoption of Code (see Ch. 1, General Provisions, Art. IV)]
The 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 with 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. 
Lots of record. In any residential district, a one-family detached dwelling and its accessory structures may be erected on any legal lot or parcel, provided such lot or parcel was of record in the County Register of Deeds' office before the original effective date or date of amendment of this chapter.
B. 
Separate ownership requirement. Such lot or parcel shall be 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 provisions of this chapter. If in separate ownership all the district requirements shall be complied with insofar as practical but shall not be less than the following:
(1) 
Lot. Width: minimum 50 feet; area: minimum 4,600 square feet.
(2) 
Building. Height - maximum 30 feet.
(3) 
Yards. Street: minimum 25 feet; the second street yard on corner lots shall be not less than 10 feet. Rear: minimum 25 feet; side: minimum 16% of the frontage but not less than five feet.
In the I-1 Industrial District single-family detached dwellings and their accessory structures may be erected on any legal lot or parcel of record at the time of the adoption of this chapter. The burden of proof shall be on the applicant for a building permit or certificate of zoning compliance to show that said lot was of record in the County Register of Deeds' office prior to the adoption of this chapter. No further subdivision for residential purposes is permitted in the Industrial District. Any building or structure erected after the adoption of this chapter under this section shall conform to the requirements of §§ 458-43 and 458-46.