No nonconforming lot may be further reduced in size.

No nonconforming lot may be developed without the prior approval of the approving authority, except an existing single-family residential dwelling situated on a nonconforming lot may be expanded and/or enlarged, provided that such expansion and/or enlargement meets the criteria of § 348-4.6B(1), (2) and (3) and, further, permits for the construction of accessory structures on nonconforming single-family residential lots shall be issued provided that said accessory structures otherwise conform to the setback, height, lot coverage and other applicable requirements of the zoning district in which the nonconforming lot is located.

An existing undersized nonconforming lot in a residential zoning district that is or was improved with a single-family dwelling may be developed, redeveloped, rebuilt, or reconstructed with a single-family dwelling without the need for a variance if such development can meet all lot coverage, front, side and rear yard setback requirements for the zone.