▁bl uster ed ▁rail ▁to ▁the ▁second . ▁▁ ▁The ▁out build ings ▁are ▁det ached ▁from ▁the ▁main ▁house ▁and ▁run ▁at ▁right ▁angles ▁to ▁it ▁on ▁its ▁western ▁side . ▁They ▁are ▁approximately ▁ 1 2 ▁metres ▁in ▁length ▁and ▁slope ▁down ▁to ▁the ▁valley ▁of ▁the ▁D ale ▁Di ke , ▁so ▁much ▁so ▁that ▁the ▁down hill ▁end ▁of ▁the ▁building ▁has ▁two ▁store ys ▁while ▁the ▁u ph ill ▁end ▁has ▁only ▁one . ▁The ▁building ▁materials ▁are ▁the ▁same ▁as ▁the ▁main ▁house , ▁being ▁g rit stone ▁blocks ▁and ▁stone ▁sl ate ▁and ▁the ▁main st ay ▁of ▁the ▁building ▁is ▁believed ▁to ▁be ▁ 1 7 th ▁century . ▁However , ▁there ▁have ▁been ▁some ▁changes ▁to ▁the ▁original ▁design ▁with ▁a ▁large ▁board ed ▁double ▁door ▁being ▁added ▁and ▁resulting ▁changes ▁to ▁the ▁stone work ▁to ▁make ▁a ▁gar age . ▁There ▁have ▁also ▁been ▁some ▁modifications ▁to ▁some ▁of ▁the ▁other ▁open ings . ▁ ▁Great ▁She ff ield ▁flo od ▁Fair ▁House ▁Farm house ▁managed ▁to ▁surv ive ▁the ▁Great ▁She ff ield ▁Flo od ▁of ▁ 1 8 6 4 ▁when ▁the ▁dam ▁wall ▁of ▁the ▁D ale ▁Dy ke ▁Dam ▁f ract ured ▁sending ▁millions ▁of ▁gall ons ▁of ▁water ▁down ▁the ▁valley . ▁The ▁original ▁ ▁dam ▁wall ▁stood ▁just ▁over ▁a ▁kilomet re ▁to ▁the ▁west ▁of ▁the ▁house , ▁there ▁was ▁great ▁dev ast ation ▁in ▁Low ▁Brad field ▁but ▁Fair ▁House ▁surv ived ▁because ▁it ▁is