Fence Cost Calculator
Calculate materials and costs for any garden fence. Covers panels, posts, gravel boards, post mix, and fitting labour estimates.
Garden Fencing Guide
Fence Panel Types and Costs
Lap panel (horizontal overlapping boards): £15–35 per panel, the most common and affordable type. Feather edge close board: £40–80 per 1.8m section, more durable and formal. Hit and miss: £50–100 per section, allows air flow, good for windy locations. Slatted (horizontal): £60–150 per section, modern appearance. Trellis tops: add £5–15 per panel to any fence. Concrete posts and gravel boards (concrete base) significantly extend fence life but add 30–40% to material cost.
Fence Posts — Depth and Spacing
A post should be buried to approximately one-third of its total length. For a 1.8m high fence, use 2.4m posts with 600mm in the ground. Spacing: 1.83m between post centres is standard for UK panels. Posts can be set in concrete (post mix), driven with a post driver (for soft ground, preserves post bottom), or set in spike holders (metal spikes driven into ground — easier, but less secure in windy locations). Never use untreated timber posts — they will rot within 2–3 years.
Gravel Boards
Gravel boards sit at the bottom of the fence, between posts, protecting the panel base from ground moisture and rot. Without a gravel board, fence panels are often in contact with soil and rot from the bottom within 3–5 years. A gravel board extends panel life by 5–10 years. They cost £5–15 each for concrete or treated timber versions. Concrete gravel boards last indefinitely; timber should be pressure-treated to at least UC3 standard.
DIY vs Professional Installation
DIY fencing is one of the most achievable garden projects — the main tool requirement is a post hole auger or digger, a level, and basic carpentry tools. The biggest challenge is achieving perfectly plumb posts. Professional fitting costs £40–80 per metre including materials, or £15–25 per metre labour only. For a 20-metre fence, expect professional fitting of £300–500 in labour alone. Getting 3 quotes is advisable — fencing prices vary significantly by region and contractor.
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