This is an appeal by the plaintiff-abutter from a decision of the Superior Court affirming the board of zoning appeals (board) upholding the issuance of a building permit on registered land. The parties stipulated to facts which gave the lot the benefit of the grandfather provision in the first sentence of c. 40A, § 6, fourth par.2 The parties agreed that, after July 2, 1970, the lot was not held in common ownership with any adjoining lot, had frontage in excess of fifty feet, and had an area in excess of 5,000 square feet. They also agreed that the first zoning by-law for the town was adopted on May 23, 1972.

Although the plaintiff argued below that c. 40A, § 6, does not apply if there was no zoning law when the lot met the statutory requirements for grandfather protection and only applies where the change is within a preexisting zoning scheme, he has rightly abandoned this argument on appeal. As the trial judge ruled, the plaintiff’s contention is precluded by Sieber v. Zoning Bd. of Appeals of Wellfleet, 16 Mass. App. Ct 985, 986 (1983).3 The memorandum of the Superior Court judge in Sieber4 reveals that the circumstances giving G. L. c. 40A, § 6, protection to the lot in that case arose prior to the existence of any zoning law in the town of Wellfleet.

What the abutter now argues is that Sieber5 did not treat the question whether the protection extended beyond area and frontage requirements, “or more specifically” to zoning requirements, such as sideyard setbacks, which could be met by a substandard lot. He argues that the owners of the lot (Robert and Kathleen Sawyer) could here have met the setback requirements. This issue was not argued to the Superior Court judge and cannot be raised for the first time on appeal.

In addition, we base our decision on another ground. The parties presented evidence as to the width of the lot. The by-law provided for a ten *944foot sideyard setback for lots under 100 feet and for fifteen foot setbacks for lots wider than 100 feet. The Sawyers’ house (now fully constructed) is located eleven feet away from the side line.

The judge found that the difference in the parties’ calculations as to the width of the lot was less than one to two inches.6 We agree with the notation in his memorandum of decision: “I regard the Tisbury Board of Appeals’ decision to issue the permit in the face of these equally credible and minimally different calculations as proper.” As said in Van Arsdale v. Provincetown, 344 Mass 146, 150 (1962), the “alleged violation, if it exists. ... is too trivial to notice.”

Judgment affirmed.