Illustrative comparison; not a verified customer job.Indicative UK Render Cleaning Prices
| Job type | Illustrative range |
|---|---|
| Small gable end | £250–£350 |
| Semi-detached house | £400–£550 |
| Detached house | £600–£900 |
| Biocide-only treatment | £150–£250 |
Budgeting guidance only. Real prices depend on render condition, access and contractor assessment.
Price ranges by property size
For rough budgeting only: small gable £250–£350; semi-detached house £400–£550; detached house £600–£900; biocide-only service £150–£250. These amounts are illustrative and are not fixed prices offered by this website.
Why render type matters
Silicone-based render is often water-repellent. Monocouche is usually coloured throughout. Painted cement render can have loose or failing paint, while older lime render requires specialist care. A reputable contractor identifies the material before suggesting any method.
- K Rend and modern silicone finishes: check the system and manufacturer instructions
- Monocouche: assess texture, soundness and colour consistency
- Painted render: check adhesion and coating condition
- Older lime or heritage surfaces: seek an appropriately experienced specialist
When lower quotes are not better
An unusually cheap quote may omit access equipment, an inspection or necessary protection. Ask how the cleaner will avoid aggressive jets or unapproved chemicals and what outcome is realistic for permanent marks or failed render.
Getting an accurate quote from photos
Show the full building, each affected elevation and a close-up of algae or staining. Include an object for scale and explain whether the property borders a road, garden, greenhouse, watercourse or neighbour’s plot. The more complete the information, the more useful the first estimate.
Helpful answers from manufacturer and UK industry guidance
Short answers with links to check the supporting guidance.
How much does it cost to clean a semi-detached house render?
A UK industry price guide published in August 2026 lists around £300–£600 for a terrace or semi-detached softwash clean, averaging about £400. This is market guidance, not a fixed quotation: the wall area, access and degree of staining determine the price you receive.
How much does it cost to clean render on a detached house?
For a detached property, the same published UK guide gives a broad £600–£1,100 range, with about £850 as its average. A large, tall or unusually stained façade can cost more. Send photographs showing all sides, roof height and access obstructions for a more useful estimate.
What affects the price of render soft washing?
The principal factors are surface area, building height, safe access, severity of algae and other marks, and any specialist treatment needed. Ask for a clear scope, including which elevations are covered, whether gutters or windows need protection, and whether VAT and access equipment are included.
Frequently Asked Questions
Does render cleaning cost more than ordinary exterior washing?
Specialist render cleaning can involve material checks, gentle application and biocide precautions, so a simple area-based comparison is not always useful.
Do I need to clean the whole property?
Not always. Cleaning one elevation may be appropriate, although colour differences between treated and untreated areas should be discussed.
Can I book a fixed price online?
This service collects quote enquiries; an independent professional must confirm the method and actual price.