External rendering is applying a protective, weather-resistant coating to the outside walls of a house, using sand and cement, monocouche or thin-coat silicone render, to give a smooth or textured finish that protects the masonry and improves appearance.
Every house in Barnet is a little different, so we never price external rendering from a brochure. We look at the structure, access and existing finishes first, then put in writing a fixed figure for the scope we settle on. As a rough steer, homeowners in London should budget £9,100–£21,000 including VAT, with work typically taking 1–3 weeks on site, depending on weather.
- Guide price
- £9,100–£21,000 inc VAT
- Time on site
- 1–3 weeks on site, depending on weather
- Postcodes
- EN4, EN5, N3, N12 and N20
- Planning rules
- England
- Local area
- Greater London
- Survey
- Free, with a written quote
What should you budget for external rendering in Barnet?
Here is how the guide price for external rendering breaks down in Barnet. We start from national figures and adjust for London, which comes out about 30% above the national guide. The resulting range, VAT included, is £9,100–£21,000, and a survey, at no cost to you, firms it up.
| Type of job | What it usually involves | Guide in Barnet |
|---|---|---|
| Front elevation or small terrace | One elevation or a small terraced house, including scaffolding and preparation. | £3,900–£9,100 |
| Typical semi-detached | All rendered walls of a 3-bed semi in monocouche or silicone, with scaffolding. | £9,100–£21,000 |
| Detached or full strip and re-render | Larger houses, or homes needing old render removed and walls repaired first. | £19,500–£39,000 |
Your price depends mostly on:
- Wall area to be rendered and the height of the house
- Render system: sand and cement, monocouche or silicone
- Scaffolding, access and protection of neighbouring property
- Detailing around windows, bays, sills and pipes
What does the job include in Barnet?
- Survey of walls, existing render, cracks and damp-proof course
- Scaffolding erected and removed, with neighbours' access agreed
- Removal of loose or failed render and pebbledash where needed
- Windows, doors and surfaces masked and protected
- Beads at corners, edges and above the damp-proof course
- Mesh reinforcement and base coats to suit the chosen system
Building in Barnet
London's housing is dominated by Victorian and Edwardian terraces, often in yellow London stock brick, with Georgian terraces in central districts and mansion blocks across many inner areas. Outer boroughs have large belts of interwar semis, and there are extensive post-war council estates. Many houses have been split into flats, and conservation areas are widespread.
London Clay shrinks and swells with the seasons, and street trees close to houses can contribute to movement, which affects foundation design.
With that background in mind, here is how we typically handle external rendering for homes in Barnet, from the first visit to the finished result.
Planning and building rules in Barnet
Each UK nation sets its own consent rules, and Barnet is in England. What follows is a plain summary; we check the specifics for your property with the council before pricing anything.
In England, re-rendering or cladding a house is often allowed without planning permission, but stone, render, timber, plastic or tile cladding is not permitted development in conservation areas, and listed buildings need consent.
If you render or re-clad more than 25% of an external wall, Building Regulations usually require the wall’s insulation to be improved where that is practical, and building control should be notified.
Rules change and every property is different, so we check the planning history and constraints for your address before we quote.
The four stages
A visit to your home
First, someone visits your home in Barnet to see the space, take measurements and note anything that could affect the work, such as access or the condition of what is there. There is no charge for this visit.
Your fixed price
We put everything into a written, fixed-price quote: the specification, what's excluded, staged payments and the expected time on site. Take whatever time you need to decide; there's no pressure to commit.
Getting ready
Next comes planning the work itself. We set a start date that suits you, line up the right trades, and make sure any approvals for external rendering are in place before the first day on site.
On site to finish
Our trades complete external rendering while your point of contact keeps you updated. When everything is finished, we clear the site, take away waste and go through the result with you before handover.
Why homeowners choose us
Common questions
How long does rendering take?
Rendering a typical semi-detached house takes around one to three weeks. Scaffolding goes up first, then removal of old render, repairs, beads and mesh. Base coats need time to cure before the finish coat. Weather has a big effect, because render should not be applied in rain, frost or strong heat. We give you an expected programme with the quote.
How much does it cost to render a house?
Rendering a typical 3-bed semi costs £9,100–£21,000, including scaffolding and preparation. As a guide, allow around £60–£120 per square metre of wall plus fixed costs for scaffolding and set-up. Sand and cement is the lowest-cost system, while silicone thin-coat costs more but needs no painting. Removing old render or pebbledash first adds noticeably to the price. We confirm a fixed figure after the survey.
Can you combine external rendering with other work?
Yes. Because we manage several trades under one contract, we can plan external rendering alongside other work on your Barnet home, such as new windows with rendering, or a kitchen refit with an extension. Combining jobs can reduce repeat set-up such as scaffolding, skips and access, and every element is listed and priced in the same written quote.
Can you render over pebbledash or old render?
Rendering over existing pebbledash or render is sometimes possible if it is firmly bonded, but if it sounds hollow, is cracked or is coming away, it must be removed first. Covering failing render simply hides the problem until the new coat fails too. We tap-test the walls and explain whether removal is needed. Removal adds time and cost but gives a sound base.
Do you cover East Barnet, Hadley Wood and Potters Bar?
Yes. As well as Barnet, we cover East Barnet, Hadley Wood and Potters Bar and the rest of London. Our coverage is UK-wide, so the process is the same wherever you are: a free site survey, a quote in writing that fixes the price for the agreed scope, and one point of contact while the work is planned and carried out.
Also covering areas around Barnet
Addresses in EN4, EN5, N3 and N12 are all covered for Barnet, along with East Barnet, Hadley Wood and Potters Bar close by. Give us your postcode when you get in touch and we will confirm the details.