Make a Payment

Invoices are issued for DSO costs and fees as well as latecomer agreement reimbursements. Payments can be made online, by mail or in-person.

View the printable DSO charge menu (pdf)

For more information on charges, see Development Charges — Water (Director’s Rule, FIN-220.2 (pdf).

Make a Payment

Online Payments

Make a secure payment through the Development Services Office web portal using your 8-digit invoice number: Online payment portal  

Mail-in Payments

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

In-person Payments

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

Latecomer payments

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