What are the marriage requirements in Washington? The bride and groom who plan to marry in Washington must meet the following requirements:   • The couple must be over 18 years old. • The bride and groom must have proof of age, such as a driver's license or a birth certificate. • The bride and groom must have 2 witnesses over 18 years of age. • In case one of the couple is divorced, it is not required to present the divorce documents. ·          • The bride and groom must fill out an application for a marriage license: Marriage License Application (PDF) .   • The bride and groom must sign the marriage license application before a notary, who will sign and seal the application. • How much does a marriage license cost in Washington? The bride and groom must pay the price of the marriage license fee, which in Washington is $ 70.00. • Include a check, money order, or cashier’s check for $ 70.00, payable to the ...