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Official government websites use .gov

Website addresses ending in .gov belong to official government organizations in the United States.

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Secure .gov websites use HTTPS

A lock lock or https:// means you've safely connected to the .gov website. Only share sensitive information on official, secure websites.

Green building handbook

The King County Green Building Handbook is your guide to increasing efficiency in your next home project. Whether you’re building new, remodeling, or replacing old systems, we have strategies that will help you make healthier, more sustainable, and potentially cost-saving decisions.

The Green Building Handbook

The King County Green Building Handbook is available in the following languages:

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