Seattle Public Utilities

Construction & Development

Development services

Seattle Municipal Tower
700 5th Ave., Seattle, WA 98104
Development Services Office
(206) 684-3333

For water services

27th floor
Mon, Wed, Thu, Fri
8:00 a.m. – 5:00 p.m.
Tue 10:30 a.m. – 5:00 p.m.


4th floor (lobby entrance)
Information & Payments desk
Online payments

Research water and sewer connections

Use the water and sewer map to research existing Seattle water, drainage, and sewer infrastructure for your property.


2017 construction standards


CAD resources


Construction and demolition waste