Location is the major factor to place the fences outside the platform or property. Constructors check the plan view of the property to identify where are the trees, shrubs, garden etc.
Home owners along with the contractor identify where they need to place the fences and gates. Once they identify the places of fences and gates then they need to know the paths and walking area. After point out these things, we need to determine the number of posts whereas in general it place at the corners of the fences and it vary depending on number of factors such as height, thickness, density and weight.
One more thing is important, placement of gates like where it is placed, how much it need, how wide it be and single or double gate works better or not. These are some questions which owner needs to forecast and then install it on the right places with the right quantity.