If the construction is completed by one year after effective date, a building, the foundation of which was completed before the effective date, may be constructed without being bound by the requirements of this chapter. In like manner, a building, the foundation of which was completed before an amendment, may be constructed if the construction is completed within one year after the amendment.

No lot may be formed from part of a lot occupied by a building unless each newly-created lot will meet all the applicable provisions of this chapter, and each or all of the newly created lots or tracts is designed so that average depth is not more than 2 1/2 times the lot width as defined in this chapter, nor more than 2 1/2 times the width of the tract or lot measured at the narrowest point of the lot or tract.

From the time an application or approval of a subdivision or land development plan whether preliminary or final, is duly filed as provided in the Subdivision and Land Development Ordinance, and while such application is pending approval or disapproval, no enactment or amendment of the Zoning Ordinance shall affect the decision of such application adversely to the applicant and the applicant shall be entitled to a decision in accordance with the provisions of the Zoning Ordinance as it stood at the time the application was duly filed. In addition when a preliminary application has been duly approved, the applicant shall be entitled to final approval in accordance with the terms of the approved preliminary application as hereinafter provided. However, if an application is properly and finally denied, any subsequent application shall be subject to the intervening change in the Zoning Ordinance. When a preliminary or final subdivision or land development plan has been approved or approved subject to conditions acceptable to the applicant, no subsequent enactment or amendment in the Zoning Ordinance or plan shall be applied to affect adversely the right of the applicant to commence and to complete any aspect of the approved development in accordance with the terms of such approval within five years from such approval. Where final approval is preceded by preliminary approval, the five year period shall be counted from the date of the preliminary approval.

On a lot held in single and separate ownership on the effective date of this Ordinance or any amendment thereto, which does not fulfill the regulations for the minimum lot area and/or lot width for the zone in which it is located, a building may be erected, altered and used and the lot may be used for a conforming (permitted) use providing the setback requirements are not less than the minimum specified herein for the residential zone.