1 Lay out the posts and gate
Place the posts and the gate on the ground, making sure the posts are parallel and the correct distance apart and allowing enough space to accommodate the hinges and the latch.
2 Dig trench
Dig a 300mm (1ft) wide trench across the entrance and long enough to contain the gateposts. Where the post holes are to be sited, dig holes 450mm (1ft bin) deep (for a low gate) or 600mm (2ft) deep (for a tall gate). Make sure that any sawn ends of timber have been treated with wood preservative.
3 Set posts into holes
Set the gate posts into the holes and fill with hardcore and concrete and use temporary cross battens to support them vertically until the concrete has set. Fill the trench with concrete at the same time and level it flush with the pathway.
4 Fit hardware
When the concrete has set completely, the gates can be hung and their hardware - e.g. latches, house number - attached. Use hardware designed for gates, as these are made to withstand both wear and tear and the weather.
5 Finishing
Wooden gates can be finished with varnish or primed and painted with an exterior-grade paint to match the paint-work of your house. Place newspaper under the gates and cover any plants to protect them from paint splashes.