Seattle Public Utilities Mami Hara, General Manager/CEO

DSO Payment

Make a secure payment to the Development Services Office using your 8-digit invoice number:

Other payment methods

Mail-in payments
Seattle Public Utilities - DSO
PO Box 94647
Seattle, WA 98124-4647

In-person payments
Information & Payments desk
Seattle Municipal Tower
700 Fifth Ave, 4th floor (lobby entrance)
Seattle, WA 98124

Latecomer payments

Before you make a latecomer agreement payment, you’ll need to contact DSO to receive a remittance slip.

Payments may only be made in-person at the following locations:

City of Seattle Customer Service Center
700 5th Avenue, 4th Floor (lobby entrance)
Monday - Friday, 8 a.m. - 5 p.m.

City of Seattle Treasurer's Office
700 5th Avenue, 42nd Floor
Monday - Friday, 8 a.m. - 5 p.m.