#1 Not Knowing Where the Main Water Shutoff Valve Is
#2 Not Calling 811 Before Digging a Hole
#3 Not Checking the Slope of Foundation Soil
#4 Not Knowing the Depth of Attic Insulation
#5 Carelessly Drilling into Walls
#6 Cutting Down a Tree
If you would like to check out the article
https://www.houselogic.com/organize-maintain/diy-repair/what-new-homeowners-need-to-know/