House Rendering Cost Per m2 in the UK: 2026 Prices Explained

Typical rendering prices per square metre

As a broad guide for 2026, you can expect the following per square metre for supply and fit, including scaffolding, on a house in reasonable condition. These are ranges, not quotes, and prices in Hertfordshire and the outer London belt tend to sit towards the upper end because labour and scaffolding cost more here than in the north.

On a typical three bed semi in Radlett, Borehamwood or St Albans with around 100 to 130 square metres of wall, that puts a full sand and cement job somewhere in the region of 5,000 to 8,000 pounds, and a silicone system nearer 9,000 to 14,000 pounds. Detached homes and anything with a lot of gables or dormers will run higher.

• Sand and cement render, painted: roughly 40 to 65 pounds per m2
• Monocouche (through coloured) render: roughly 60 to 90 pounds per m2
• Silicone or acrylic thin coat over a basecoat and mesh: roughly 70 to 110 pounds per m2
• External wall insulation with silicone finish: roughly 100 to 160 pounds per m2
• Lime render on older or listed properties: roughly 80 to 130 pounds per m2
• Patch repairs to an existing render: usually priced per job rather than per m2, often 300 to 900 pounds

What pushes the price up or down

The biggest single variable is what is already on the wall. New blockwork on an extension is the cheapest surface to render because it needs little more than a scratch coat. Stripping off old, blown render or pebbledash before you can start adds a day or two of labour and a skip, which can put 10 to 20 pounds per m2 on the job before any new material goes on.

Access matters too. A terrace with a narrow side return, a house on a busy road needing a scaffold licence from Hertsmere or St Albans council, or a property with conservatory roofs and porches to bridge over all add cost. Two storey work needs full scaffolding, which on its own is often 800 to 1,500 pounds for a semi. Ground floor only jobs, such as rendering below a bay window or a garden wall, are cheaper per square metre because they can be done from towers.

• Number of windows, doors and corners, as every bead and reveal takes time
• Whether the walls are plumb or need building out with dubbing coats first
• Colour choice, as some pigments in monocouche and silicone cost more
• Whether you want features like quoins, banding or a painted plinth
• Time of year, as most renders cannot be applied below about 5 degrees or in heavy rain

Why silicone costs more than sand and cement

Sand and cement is the traditional choice and still perfectly good on the right wall, but it is rigid, so it can crack as a house moves, and it needs repainting every five to eight years. That maintenance is why the cheapest option on day one is not always the cheapest over twenty years.

Silicone and acrylic thin coat systems go on over a reinforced basecoat with mesh embedded in it, which is where much of the extra cost lies. The finish is flexible, breathable and coloured all the way through, so a scratch does not show a grey patch underneath. It also sheds dirt better, which matters on north facing elevations in a leafy area like Radlett where algae is a common problem. Monocouche sits between the two: through coloured and lower maintenance than sand and cement, but it is still a cement based product and can hairline crack on lively walls.

Getting a like for like quote

When quotes vary a lot, ask each renderer to break down what is included. A quote that leaves out scaffolding, removal of the old render, waste disposal or the final paint coat can look cheaper by a couple of thousand pounds and end up costing more. Ask whether the price is for a full system with a basecoat and mesh, or a single coat straight onto the wall, because those are not the same job.

It is also worth asking what happens at the junctions: how the render will be finished at the damp proof course, around window sills and where it meets the roofline. Bellcast beads, stop beads and a proper gap above the ground are small details that decide whether the render lasts fifteen years or fails in three. A written quote should name the product and colour, the number of coats, the guarantee offered and a realistic start date. Most reputable renderers in this part of Hertfordshire are booked several weeks ahead in spring and summer, so a very quick start from a very cheap quote is worth a second look.