Garden Fence Length & Cost Calculator
Calculate the total material needed to fence any rectangular or custom-perimeter garden. Get panel count, post count, and a cost estimate.
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Garden Fencing Guide
What do I need to know about Standard UK Panel Sizes?
Standard UK fence panels: 1.83m wide (6 feet). Heights: 0.9m (3ft), 1.2m (4ft), 1.5m (5ft), 1.8m (6ft). A 1.8m high panel with 2.4m posts gives 600mm in the ground and 1.8m above — the minimum for most garden privacy fences.
What's the key thing to understand about Planning Permission?
UK rules: front garden fences over 1m (next to a road) or side/rear fences over 2m height require planning permission. Always check with your local authority if fencing near a road or boundary. You need your neighbour's agreement to remove shared boundary fencing.
What do I need to know about Installation Tips?
Mark post positions accurately before digging — even one post out of line throws the whole run. Use a string line as a guide. Postcrete sets in minutes, but the post can still be adjusted during the first minute — have a spirit level ready. Let set for 24 hours before hanging panels.
What do I need to know about Fence Height and Wind Loading?
Taller fences catch significantly more wind, which affects both the strength of posts and fixings you need and how exposed a garden feels. A 1.8m (6ft) fence in an open, exposed location experiences considerably more wind load than the same fence in a sheltered garden, which is why fence specifications often differ by exposure rather than height alone. For fences over 1.5m, concrete posts or metal post supports are usually worth the extra cost over basic timber posts, since wind load is the most common cause of fence failure — panels blowing over or posts snapping at ground level. Trellis toppers add height (useful for privacy or climbing plants) without adding as much solid wind resistance as a full panel extension, which is why they're a common choice for exposed boundaries where a taller solid fence would need much stronger foundations. Always check with neighbours and, for fences over 2m, your local authority — planning permission may be required depending on location and height.