The Board of Appeals may authorize, upon appeal in specific cases, such variance from the terms of this chapter as will not be contrary to the public interest where, owing to exceptional and extraordinary circumstances, there are practical difficulties or unnecessary hardships in the way of the carrying out of the strict letter of this chapter, subject to terms and conditions to be fixed by the Board under the law; provided, however, that no such variance shall be granted unless the Board finds that:
(1)
There are physical conditions, fully described in the findings of the Board, applying to the land or buildings for which the variance is sought, which conditions are peculiar to such land or building and have not resulted from any act of the applicant or any predecessor in title; and
(2)
For reasons fully set forth in the findings of the Board, the aforesaid circumstances or conditions are such that the strict application of the provisions of this chapter would deprive the applicant of the reasonable use of such land or building, that the granting of the variance is necessary for the reasonable use of the land or buildings and that the variance as granted by the Board is the minimum variance that will accomplish this purpose; and
(3)
The granting of the variance under such conditions as the Board may deem necessary or desirable to apply thereto will be in harmony with the general purpose and intent of this chapter, will not represent a radical departure therefrom, will not be injurious to the neighborhood, will not change the character thereof and will not be otherwise detrimental to the public welfare.