To confirm the customer's location, go to the Lead Summary Page from the main deal page by clicking on the customer's name.
Click on "Confirm Location" under the picture of the site and the map will enlarge to allow you to zoom in/out and move the pin around the map to find the customer's house.
Once the correct location is found, put the pin on the house and click on "confirm location" again.
Make sure that "Stick with the current address" is checked and then click on "Confirm choice". That will let the design team know which house the design needs to be built on.