Make a Payment

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

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

Seattle Municipal Tower
700 Fifth Avenue, 4th Floor - Main Lobby
Monday - Friday, 8:30 a.m. - 4:00 p.m.

Latecomer payments

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