Okla. Stat. tit. 19, § 19-901.25: Contracts for fire protection service

A. Any city or town located in the same county as any fire

protection district may contract, for one (1) year or more, for fire

protection service by the district throughout or within part of the

area of the city or town. During the term of the contract, without

curtailing the rights, powers and duties of the city, the area

covered by the contract may in accordance with express terms of the

contract be construed as part of the district territory for all fire

protection purposes under this act.

B. Owners or occupants of property in the vicinity of the

district not included within the territory of any city or town or

other fire protection district, and such district may contract, for

one (1) year or more, for fire protection service by the district

for the property described in the contract, which such contract

shall provide for a fixed annual payment of an agreed amount by the

owner or occupant of the property to the district to be paid

annually in advance at the date of the making of such contract, and

on the even date thereof for each subsequent year covered by the

contract.

C. The contract shall be in writing and shall be set forth in

full in the minutes of the respective governing bodies of the

contracting parties and a duplicate original shall be filed with the

records of the district in the office of the county clerk.

D. Upon the filing of the contract, the district shall be an

independent contractor.