Basic District Map. The boundaries of the R, NB, EZ (including EZ-A), LI, LI2 and GI Zoning Districts are defined and bounded on a map originally dated December 15, 1990, entitled "Zoning Map, Lancaster, Massachusetts," as amended from time to time by Town Meeting vote, which, together with all boundaries, notations and other data shown thereon, is made part of this bylaw. That map, as amended, is on file in the office of the Town Clerk.[1]

Overlay districts. The boundaries of the overlay districts are defined and bounded as follows:[2]

Location of district lines. A district line drawn on the Zoning Map generally on or parallel to a street, railroad, utility line or watercourse, or on a lot line, shall, as relevant, be deemed to be 1) on the center line of the right-of-way or watercourse, or 2) parallel to the center line as the distance noted, or 3) on the lot line, as these existed on the date of adoption of this bylaw.

Lots crossed by a district line. Where the district line divides a lot in one ownership at the date of adoption of this bylaw, or as of the effective date of amendment to relevant district lines, the regulations applying to the less restricted portion may be considered as extending not more than 25 feet into the more restricted portion of the lot.

Lots crossed by a Town line. When part of a lot in one ownership lies outside the Town of Lancaster, the portion within Lancaster shall conform to the use regulations of this bylaw. In applying dimensional controls to that portion of the lot within Lancaster, the dimensions of the whole lot shall be considered without reference to the Town line.

Uncertainty of district lines. Whenever any uncertainty exists as to the exact location of a boundary line, the Building Inspector shall consult the Planning Board as provided in § 220-60B. The Building Inspector's decision may be appealed to the Board of Appeals in accordance with MGL c. 40A, § 8.