Modular building construction plans must include the following drawings and information. Use this checklist to be sure your plans are complete.Washington State has requirements for when an architect is required to complete a set of plans. Our Basic Plot Plan (also known as site plan) will give you the basics of your property. We will use GIS and Satellite imagery to create the draft site plan. A shed permit is an official document you need to get before you can build, install, or change a shed on your property in Washington State. Counties and cities must adopt a permit review process that provides for consolidated review of all permits necessary for a proposed project action. This page provides an overview of Washington State building codes, including examples of city and county building codes, building permits and permit processes. Most of our permits can now be submitted online. For application types that are not available online, instructions on how to submit can be found on this page.