Cold Weather Concrete Work
Winter in Washington brings cold temperatures and a great amount of rain. Concrete can be greatly affected by changes in temperature and moisture. See the Winter 2025 Cold Weather Concrete flyer below for tips on working with concrete this winter.
Responsibilities
The responsibility of the Building Division is to protect the public’s health, life safety, and general welfare on the Built Environment incorporating the development and application of best practices principles.
Online Permitting
Visit the Permitting page for information on online applications.
See also our Building Permits FAQs.

Construction Hours
Duvall Municipal Code 6.04.060 specifies hours for construction activities as follows:
- Monday – Saturday: 7:00 am to 6:00 pm
- Sunday and Holidays: No work allowed
All types of improvements regardless of requiring a building permit are subject to land use regulations, e.g. property setbacks, maximum impervious surface. Please contact the Planning Department planning@duvallwa.gov for more information.
Please read the State of Washington’s Requirements if you plan on acting as your own contractor.