Okla. Stat. tit. 19, § 19-863.12: Enforcement of building line and set-back regulations -

Appeals - Modification.

After the council and board shall have established building or

set-back lines on such major highways, no new building or structure

shall be erected within such building or set-back lines in the area

and no permit for such building shall be issued by the city building

inspector as respects the territory over which the municipality

shall have enforcement jurisdiction or by the county engineer,

hereby designated to administer and enforce building line and set-

back regulations for the county, as respects the territory over

which the county shall have enforcement jurisdiction. The city

board of adjustment, as respects the territory over which the county

shall have enforcement jurisdiction, shall hear appeals of any

property owner aggrieved by such building line and set-back

regulations in specific cases, in order than unwarranted hardship,

which constitutes an unreasonable deprivation of uses as

distinguished from a mere grant of privilege, may be avoided, the

intended purpose of the regulations strictly observed, and the

public welfare and public safety protected.