Nonconforming signs, nonconforming structures, nonconforming buildings and nonconforming uses may continue until they are removed or discontinued, subject to the limitations provided in this chapter.

No nonconforming sign, structure, building or use shall be changed to another nonconforming sign, structure, building or use.

Nothing in this chapter shall be construed as authorization for or approval of the continuance of any sign, structure, building or use in violation of the zoning regulations or other ordinances in effect as of the effective date of this chapter. Any sign, structure, building or use which is enlarged, increased, extended or reconstructed pursuant to the provisions of this chapter to occupy a floor area or land area greater than existed at the time when it became nonconforming shall comply with the height, area and yard requirements applicable at the time of such change to the district in which it is located.

A nonconforming sign may be repaired or reconstructed, provided that no structural alterations may be made which increase the gross surface area of the sign or of the land occupied by the sign by more than 25%.

The substitution of poster panels and painted boards on nonconforming signs shall be permitted.

The restored structure, building or sign may not be enlarged, increased or extended to occupy a floor area or land area more than 25% greater than was occupied at the time when it became nonconforming; and

Such restoration is started within six months of the occurrence of the casualty and diligently prosecuted to completion within 24 months.

Such lot was held under separate ownership at the effective date of this chapter; and

A variance from the minimum applicable front yard depth, side yard width or rear yard depth requirements shall be obtained through the action of the Zoning Hearing Board.

All home occupations in existence prior to the adoption date of this section are in violation of this chapter unless the home occupation was granted a special exception by the Shaler Township Zoning Hearing Board or unless the home occupation predates the original adoption of the Township Zoning Ordinance.

Any home occupation which is operating without having been granted previously a special exception from the Township Zoning Hearing Board or which does not predate the Township Zoning Ordinance is hereby required to obtain a no-impact home-based business permit from the Township Code Enforcement Officer.

Any home occupation which has been granted previously a special exception by the Township Zoning Hearing Board prior to the adoption of this chapter and operating in compliance with a previously granted special exception shall be entitled to continue to operate under those terms (at that address). However, any home occupation approved previously by the Zoning Hearing Board that has acquired any feature not approved by the Board shall not be entitled to continue, and such business or commercial activity must obtain a no-impact home-based permit from the Code Enforcement Officer.

A nonconforming communications tower or a communications facility may be utilized for co-location.

A nonconforming communications tower may not be increased in height.

If a nonconforming communications tower or communications facility ceases to be utilized or becomes obsolete, the obsolete or unused communications tower or facility shall be removed completely within six months of cessation of use.