For the purposes of this chapter the Town of Cambria is hereby divided into the following 10 classes of districts:

The boundaries of these districts are hereby established on a map entitled "Zoning Map of the Town of Cambria" by Wendel Duchscherer, Engineers, including amendments thereto, which map accompanies, and is hereby declared to be a part of this chapter, and is on file with the Town Clerk.

Where a district boundary line, as appearing on the Zoning Map, divides a lot or land in single ownership as existing at the time of this enactment, the use authorized on and the district requirements applying to the less restricted portion of the property shall be construed as extending into the remaining portion of the property beyond the district boundary lines for a distance not exceeding 35 feet. Otherwise, unless shown to the contrary on the Zoning Map, the boundary lines of districts are the center lines of streets and alleys, or such lines extended, railroad right-of-way lines, the center lines of creeks and waterways, the corporate limits line as it existed at the time of the enactment of this chapter.

The zoning regulations and districts herein set forth and as outlined upon said map are made in accordance with a Comprehensive Plan for the purpose of promoting and preserving the public health, safety, character, convenience, order, prosperity and general welfare of the community. They have been designed to lessen congestion in the streets, to secure safety from fire, panic and other dangers, to provide adequate light and air, to prevent the overcrowding of land, to avoid undue concentration of population, to facilitate the adequate provisions of transportation, water, sewage, schools, parks and other public requirements. They have been made with reasonable consideration, among other things, as to the character of each district and its suitability for particular uses, and with a view of conserving the value of buildings and encouraging the most appropriate use of land throughout the Town.

No building, structure or land shall hereafter be used and no building, structure or part thereof shall be erected, moved or altered unless for a use expressly permitted by and in conformity with the regulations herein specified to the district in which it is located, except as hereinbefore provided.

The present tense shall include the future, the singular number shall include the plural and the plural the singular, terms such as person shall include the plural persons, as well as corporations. The word "shall" is always mandatory. The term lot shall include the terms such as plot or parcel.