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A fence is quoted per metre because a metre is what the buyer can measure on a plan. But almost nothing in the price is really per metre. It is posts, panels, fixings, coating and the labour to set it, and those four respond to height, wind and ground conditions in different ways. Two fences of the same length can differ by a factor of two without either supplier being dishonest.
This is the part buyers compare, and it is the part with the smallest spread. Welded mesh, chain link and palisade are all commodity products; the difference between suppliers is usually wire diameter, coating weight and how honestly those are stated, not the concept.
What changes the price inside one product family is the wire and the coating. A heavier wire costs more because there is more steel in it. A thicker zinc coating costs more because it spends longer in the galvanising bath. Neither shows up in a photograph, which is why a per-metre comparison between two quotes is so often meaningless.
Posts are where the geometry bites. The fence has to resist wind, and the post is the member that carries that load to the ground. As height rises, the load rises with height and the bending the post must resist rises faster than that. A 2.4 m fence does not use posts that are simply a scaled-up version of a 1.8 m fence; it uses a heavier section, and often a narrower bay spacing.
Bay width is the quiet cost lever. Wider bays mean fewer posts and fewer holes, which saves money, but each post has to be heavier and each panel has to span further. On an exposed site the cheaper answer is usually the tighter bay.
Small items, disproportionate effect on the total when there are many of them. Clamps, brackets, tension bands and post caps are priced per piece, and a fence with 200 posts needs 200 sets. Gates are quoted separately for good reason: a gate is a structure with hinges, a latch and a frame that must not sag, and it is frequently the most expensive metre on the site.
Three options dominate. Pre-galvanised wire is the cheapest and the thinnest protection. Hot dip galvanising after welding gives a heavier zinc layer and is the right choice for coastal or industrial air. Powder coating over galvanised steel adds colour and a second barrier, and it is what most buyers actually want visually, but it costs more and its life depends on the preparation underneath.
The honest question to ask is not which coating is best but what the fence will be exposed to. Inland, dry and non-industrial, pre-galvanised is often enough. Within a few kilometres of salt water, the cheapest coating on the list is the most expensive decision on the project.
The part that is invisible in a catalogue. Setting posts in soil means excavating and backfilling. Setting them in rock means a rock breaker or drilling. Setting them on a concrete wall or a retaining structure means base plates and anchors, which is a different product entirely. A quote that assumes soil and meets rock will change.
Doubling the height doubles the panel area, so the panel line doubles. But the wind pressure acts on twice the area at twice the lever arm, so the overturning moment at the base roughly quadruples, and the post and its foundation have to resist that. This is why a 3 m fence is not "a 1.5 m fence times two" in cost, and why a supplier who quotes purely per square metre on a tall fence is either guessing or planning to revise.
You can compare wire diameter, mesh aperture, post section and wall thickness, coating type and coating weight, and bay spacing. Those are specifications, and they are checkable. You cannot meaningfully compare a per-metre figure without them, because a lower number usually means a thinner wire, a lighter post or a thinner coating, and all three shorten the life of the fence rather than the price of the project.
The fence line on a drawing, with total length and any corners, returns and slopes.
Height, and whether it changes along the run.
What is below ground: soil, rock, or an existing concrete edge.
The environment: coastal, industrial, inland rural, or urban.
Gates, their widths and how they will be used.
Whether installation is in your scope or ours.
Almost always wire diameter, post section or coating. Compare those three before comparing the total. A quote that does not state them cannot be compared at all.
Yes, and faster than the area grows. The panel area rises in proportion to height, but the overturning moment at the base rises roughly with the square of height, so posts and foundations get heavier than a simple scale-up.
It adds a line to the price, and it adds colour and a second barrier. Whether it is worth it depends on exposure. Near salt water or in industrial air, the coating choice matters more than the colour.
Yes, and it is common. In that case the post section is your responsibility, and the wind load calculation has to match the panel you buy. We will give the panel wind pressure figures so your engineer can check the section.
Excavation in rock, removal of existing fence, concrete work, and any permit. We state the exclusions on the quote so they are not discovered on site.
It changes both lines in opposite directions: wider bays mean fewer posts but heavier ones and heavier panels to lift. On a long straight run the totals come closer than buyers expect. On an exposed site the tighter bay is usually the cheaper total, because the post size you avoid is more expensive than the posts you add.
It follows drawing approval and coating, not a stock number. We give a firm schedule with the quotation once the specification is frozen.
We manufacture and supply. Outside China the scope is supply only, with setting-out drawings; installation is by the client's contractor. We will review the method statement before work starts.
Send the fence line, the height and what is below ground, and we will come back with a section and a complete scope rather than a bare per-metre number. If the run is a temporary one, the site fencing guide covers the different cost structure; if security rather than boundary is the driver, start from the anti-climb specification.
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