Step 1: See FAQ “How can I find out what zone I live in?” for applicable zoning district. If you know the relevant zoning district for your parcel/property proceed to step two.
Step 2: Go to: http://www.codepublishing.com/WA/BattleGround/
Step 3: Click on “Title 17 Zoning”
Step 4: Find applicable zoning district chapter
Step 5: Click on dimensional requirements