Insofar as the standards in this article are not inconsistent with the provisions of §§ 59.69(10) and 62.23(7)(h), Wis. Stats., they shall apply to all nonconforming structures and nonconforming uses. These regulations apply to the modification of, or addition to, any structure and to the use of any structure or premises which was lawful before passage of this chapter or any amendment thereto. The existing lawful use of a structure or building or its accessory use which is not in conformity with the provisions of this chapter may be continued, subject to the following conditions:
A. 
No modifications or additions to a nonconforming use shall be permitted unless they are made in conformity with the provisions of this article. For the purposes of this article, the words "modification" and "addition" shall include, but not be limited to, any alteration, addition, modification, structural repair, rebuilding or replacement of any such existing use, structure or accessory structure or use. Ordinary maintenance repairs are not considered structural repairs, modifications or additions; such ordinary maintenance repairs include internal and external painting, decorating, paneling and the replacement of doors, windows and other nonstructural components;
B. 
If a nonconforming use is discontinued for 12 consecutive months, it is no longer permitted, and any future use of the property and any structure or building thereon shall be made to conform to the applicable requirements of this chapter.
C. 
As requests are received for modifications or additions to nonconforming uses or nonconforming structures in the floodway, a record shall be kept which lists the nonconforming uses and nonconforming structures, their present equalized assessed value, and the cost of those additions or modifications which have been permitted.
D. 
No modification or addition to any nonconforming structure or any structure with a nonconforming use which, over the life of the structure, would exceed 50% of its present equalized assessed value shall be allowed unless the entire structure is permanently changed to a conforming structure with a conforming use in compliance with the applicable requirements of this chapter, and contiguous dry land access is provided in compliance with § 548-20B(3) or (4).
A. 
No modifications or additions shall be allowed to any nonconforming structure or any structure with a nonconforming use in a floodway area, unless such modification or addition has been granted a permit or variance and meets all of the following criteria:
(1) 
The modification or addition to the existing structure will not increase the amount of obstruction to flood flows as provided in § 548-12A;
(2) 
Any addition to the existing structure shall be floodproofed, pursuant to § 548-32, by means other than the use of fill, to the flood protection elevation; and
(3) 
If any nonconforming structure or any structure with a nonconforming use is destroyed or is so badly damaged that it cannot be practically restored, it cannot be replaced, reconstructed or rebuilt unless the provisions of Article III are met. For the purposes of this subsection, restoration is deemed impractical where the total cost of such restoration would exceed 50% of the present equalized assessed value of said structure.
B. 
No new on-site sewage disposal system or addition to an existing on-site sewage disposal system, except where an addition has been ordered by a government agency to correct a hazard to public health, shall be allowed in a floodway area. Any replacement, repair or maintenance of an existing on-site sewage disposal system in a floodway area shall meet the applicable provisions of local ordinances and Ch. SPS 383, Wis. Adm. Code.
C. 
No new well used to obtain water for ultimate human consumption or modifications to an existing well shall be allowed in a floodway area. Any replacement, repair or maintenance of an existing well in a floodway area shall meet the applicable provisions of this chapter and Chs. NR 811 and NR 812, Wis. Adm. Code.
A. 
No modification or addition shall be allowed to any nonconforming structure or any structure with a nonconforming use in the flood fringe area unless such modification or addition has been granted a permit or variance and, except where Subsection B is applicable, the modification or addition is placed on fill or is floodproofed to the flood protection elevation in compliance with the applicable regulations for that particular use in a flood fringe area as contained in § 548-20.
B. 
Where compliance with the provisions of Subsection A above would result in unnecessary hardship, and only where the structure will not be either used for human habitation or be associated with a high flood damage potential, the Zoning Board of Appeals, using the procedure in § 548-30E, may grant a variance from those provisions, using the criteria listed below. Modifications or additions which are protected to elevations lower than the flood protection elevation may be permitted, if:
(1) 
Human lives are not endangered;
(2) 
Public facilities, such as water or sewer, are not to be installed;
(3) 
Flood depths will not exceed four feet;
(4) 
Flood velocities will not exceed two feet per second; and
(5) 
The structure will not be used for storage of materials described in § 548-20F.
C. 
Any new, addition to, replacement, repair or maintenance of an on-site sewage disposal system in a flood fringe area shall meet all the applicable provisions of all local ordinances and Chapter SPS 383, Wis. Adm. Code.
D. 
Any new, addition to, replacement, repair or maintenance of a well in a flood fringe area shall meet the applicable provisions of this chapter and Chapters NR 811 and NR 812, Wis. Adm. Code.