As used in this chapter, the following terms shall have the meanings indicated:
NONCONFORMING BUILDING OR STRUCTURE
Any structure which is devoted to a use which is permitted in the zoning district in which it is located, but which is located on a lot that does not conform to applicable lot size and/or area and bulk requirements, where such building or structure existed lawfully prior to the enactment of this chapter or amendment.
NONCONFORMING LOT OF RECORD
An undeveloped lot which does not comply with the applicable provisions contained in this chapter, or any amendment hereafter enacted, but which was lawfully in existence prior to the enactment of this chapter.
NONCONFORMING USE
A use of part or all of a structure, or a use of land (not involving a structure or only involving a structure which is accessory to such use of land), which does not comply with the applicable use regulations contained in this chapter, where such use existed lawfully prior to the enactment of this chapter or amendment.
Subject to the provisions of this section, a use of building or land existing at the time of the enactment of this chapter may be continued even though such does not conform with the provisions of these regulations for the district in which it is located. The Zoning Officer shall keep and maintain a list of all nonconforming uses existing at the time of the passage of this chapter and which may come to exist in the future.
A. 
Nothing in this chapter shall prevent the strengthening or restoring to a safe condition of any portion of a building or structure declared unsafe by a proper authority.
B. 
A nonconforming building, structure (excluding signs) may be altered, improved or reconstructed, provided that the total cost of such work does not exceed 50% of the fair market value of the structure at the time of the requested alteration and that the work does not make the structure any more nonconforming in any aspect. This cost limitation does not apply if the work involves bringing the structure into conformance with applicable zoning regulations.
C. 
If a nonconforming structure, or use thereof, is destroyed totally or partially by fire, collapse, explosion or other disaster, it may be reconstructed (and the nonconforming use thereof continued), if work commences within six months of the date of destruction and is pursued diligently to completion. However, reconstruction shall not make the building or structure more nonconforming, in any aspect, than it was prior to destruction. Reconstruction must comply with applicable state and local building codes.
D. 
A lawful use in a nonconforming building or structure may expand within the existing building.
A. 
Residential, mixed-use, conservation districts.
(1) 
In such districts, nonconforming uses may expand up to 25% of the original building or use area (measured in square feet), to allow for continuation and reasonable growth of the use. Such expansion shall not exceed applicable area and bulk requirements and shall not eliminate required offstreet parking and/or loading areas.
(2) 
Zoning Hearing Board may authorize an expansion or enlargement exceeding the 25% limitation where the expansion is to provide required offstreet parking or loading space or to improve hazardous conditions. Board may require an additional traffic study, also may require additional development plan prior to approval.
B. 
Commercial, industrial districts. In any commercial or industrial district, a nonconforming use may expand up to 50% of the original building or lot area (measured in square feet), in accordance with the same conditions stated in § 550-704A.
A nonconforming use may be changed to a similar nonconforming use within the same type of use category. When a nonconforming use is changed to a permitted one, it shall not be subsequently changed to a nonconforming use. A change of one nonconforming use to another nonconforming use requires review and approval by the Zoning Hearing Board, in accordance with § 550-904F(4) of this chapter.
Nothing in this chapter shall require any change in plans, construction or designated use of a building or structure for which a building permit has been issued and the construction of which shall have been diligently prosecuted within six months of the date of such permit, and the entire building completed according to approved plans within one year of the enactment of this chapter.
A nonconforming use of a building or land which has been abandoned shall not thereafter be returned to such nonconforming use. A nonconforming use shall be considered abandoned when one or more of the following conditions apply:
A. 
The intent of the owner to discontinue the use is apparent.
B. 
A nonconforming use has been discontinued for a period of six months unless other facts show intention to resume the nonconforming use.
C. 
It has been replaced by a conforming use.
D. 
It has been changed to another nonconforming use under permit from the Zoning Hearing Board.
Nothing in this chapter shall be interpreted as authorization for or approval of the continuance of the use of a structure or premises in violation of zoning regulations in effect at the time of the effective date of this chapter.
Whenever the boundaries of a district shall be changed so as to transfer an area from one district to a district of a different classification, the foregoing provisions shall apply to any nonconforming uses, structures or lots of record existing therein.
A. 
In any residential or mixed-use district, notwithstanding the regulations imposed by any other provision of this chapter, a single-family detached dwelling which complies with applicable zoning restrictions except for lot area may be erected, provided that the following requirements are met:
(1) 
The lot is shown by a recorded plat or deed to have been owned separately and individually from adjoining tracts of land at a time when the creation of a lot of such size, at such location was not prohibited by any zoning ordinance then in effect.
(2) 
The lot has remained in separate and individual ownership from adjoining tracts of land continuously during the entire time that the creation of such lot has been prohibited by the applicable zoning ordinance or ordinances.
B. 
Construction permitted by the above shall comply with all the regulations, except lot area and yard requirements, applicable to single-family dwellings in the zoning district in which the lot in question is located. However, the following yard requirements shall apply:
(1) 
Front yards: as prescribed by the regulations for the zoning district in which the lot is located or by the provision for front yard exceptions in Article IV of this chapter.
(2) 
Side yards: The dwelling shall be placed on the lot so as to provide two side yards. A side yard shall not be less than the smaller of:
(a) 
Three feet; or
(b) 
The minimum side yard prescribed by the regulations for the applicable zoning district.
(3) 
Rear yards: as prescribed by the regulations for the zoning district in which the lot is located, or no less than 10 feet.
A. 
Any use, for which a conditional use permit has been issued as provided by this chapter, shall not be deemed to be a nonconforming use, but it shall be deemed a lawful conforming use.
B. 
Where a use exists at the effective date of this chapter and is permitted by this chapter only as a conditional use in the zoning district in which it is located, then it shall be deemed to be a lawful conforming use in such zoning district.
A. 
Upon adoption of this chapter, the Zoning Officer shall prepare a list of all nonconforming signs. A nonconforming sign cannot be enlarged or altered in any aspect, except to make safety improvements or changes which will make the sign conforming, or more conforming, to the provisions of this chapter.
B. 
In the case of a nonconforming projecting sign (i.e., a sign attached to but projecting perpendicularly from a structure or building face), it must be replaced with a conforming sign whenever there is a change of ownership of the use or a change of use following the effective date of this chapter.
C. 
If the Zoning Officer orders repairs on any nonconforming sign, which equal 50% or more of the sign's replacement value, then the sign shall be brought into conformance as part of the repairs.