Walk down almost any street in Clapham, Ealing or Richmond in September and you’ll spot the scaffolding going up. It isn’t a coincidence. Homeowners across London know that once the clocks go back, paint stops curing properly, contractors’ diaries fill up for spring, and any damp patch you were planning to sort gets another five months to work its way into the brickwork. Late summer and early autumn are, realistically, the last practical window to get exterior work done properly before the weather turns.
This guide is here to help you use that window well. We’ll cover why exterior painting matters for more than appearances, how London’s climate actually affects your paintwork, whether spray or brush application suits your property, what genuinely drives the cost, and what to check before you sign off on a contractor.
It’s tempting to think of exterior painting as a cosmetic job. Freshen up the render, make the front door pop, done. That’s part of it, but the paint film on your walls, window reveals and soffits is doing real structural work too. On a solid-walled Victorian terrace, the coating is often the only thing standing between London’s rain and the brick or lime render underneath. Once that film cracks or thins, moisture gets in, and what started as a paint job becomes a repointing or render repair job.
We see this pattern constantly on Edwardian bay-fronted houses in south London. A coat that looked fine from the pavement had actually failed at the window two years earlier, and nobody noticed until damp showed up on the bedroom wall inside. A good exterior coating system is cheaper than the alternative every single time, and it’s the reason we’ll never quote for “just the bits you can see” without checking what’s underneath first.
There’s a financial angle too, beyond the immediate cost of repairs. Buyers and their surveyors notice tired, flaking exteriors on a viewing before they notice almost anything else about a property. A well-maintained exterior doesn’t just protect the building fabric; it’s one of the cheapest ways to protect the value of the house itself.
London’s climate is milder than most of the UK, but it isn’t kind to paintwork. The city gets a lot of low-intensity, driving rain rather than short, heavy downpours, and that pattern is worse for coatings than people expect. Slow, driving rain gives water far more time to find its way into hairline cracks and joints, particularly on west and south-west facing elevations that catch the prevailing wind.
Add in London’s pollution levels, which are still higher than the national average despite improvements from the ULEZ expansion, and you get a slow build-up of grime that traps moisture against the surface. Properties near busy roads (the A406, the A3, anywhere close to Heathrow’s flight paths) tend to need a wash-down and recoat a year or two sooner than a quiet mews house in Barnes.
As a rough guide, a well-prepared masonry paint job on a London property lasts 6 to 10 years. Spray-applied silicone or elastomeric coatings can push towards 12 to 15. Anything failing under 5 years usually points to poor preparation rather than poor paint, and it’s the first thing we check when a homeowner tells us their “new” paint has already started peeling.
Orientation matters more than most people expect, too. A north-facing wall in a sheltered courtyard can go a decade without a wash-down, while the south-west gable end of the same house, catching the weather full-on, might need attention within six or seven years. If your property has one elevation that always looks worse than the others, that’s not bad luck. It’s physics.
Both methods have their place, and the right answer depends on the property, not on which one sounds more modern.
Brush and roller is still the better choice for smaller jobs, properties with a lot of glazing close to the walls, or anywhere overspray onto neighbouring cars, windows or gardens is a genuine risk, think terraced streets with cars parked bumper to bumper. It’s slower and it costs more in labour, but it gives total control over exactly where the paint goes.
Spray application earns its keep on larger elevations, render, pebbledash, and anywhere with a lot of fiddly detail like barge boards, spindles or decorative brickwork, because the paint gets into every profile without pooling. It also gives a noticeably more even, factory-like finish on flat render, and it’s considerably faster, which matters when you’re racing an autumn weather window. Our team sets up full masking and containment before any spray work starts, so overspray onto neighbouring properties simply isn’t part of the job. If you want the detail on how spray painting actually works and when it makes sense for your property, we’ve covered that in full in our guide to spray painting services in London.
For occupied family homes specifically, there are extra practical considerations around access, drying time and keeping the household running normally during the work. We go through all of that in our separate guide to home spraying services.
Not every property should be painted at all, and this is where we sometimes disagree with quotes homeowners get from other contractors. If you’ve got attractive London stock brick or Portland stone detailing, painting over it in a solid colour is close to permanent in practice. Reversing it means stripping paint off masonry, which is expensive and risks damaging the brick face underneath.
A transparent, breathable masonry protector is often the better call here. It stops water ingress and can reduce efflorescence and frost damage while leaving the brick or stone visible. Coloured coatings make more sense on render, pebbledash, or brick that’s already been painted at some point in its history; trying to “un-paint” it isn’t realistic, so a good-quality, breathable coloured system is the sensible route instead.
Whichever you choose, the coating needs to be vapour-permeable. Sealing an old solid wall behind a non-breathable paint is one of the more common causes of damp we get called out to fix, usually a year or two after someone else’s “quick, cheap” repaint. It’s a false economy that costs far more to correct than it saved.
Exterior house painting costs in London vary more than most homeowners expect, and it isn’t really about the paint itself. A tin of masonry paint costs roughly the same whoever’s holding the brush. The variation comes from several factors working together.
Property size and elevation count set the baseline. A mid-terrace with one street-facing wall costs a fraction of a detached house with four elevations to prepare and coat.
Surface condition matters more than almost anything else. A property that’s been maintained every 8 years typically needs a wash, minor filling and two coats. One that’s been neglected for 15 years might need render repairs, extensive scraping of failed paint, mould treatment and a stabilising primer before any topcoat goes on, and that’s where costs climb quickly.
Access and scaffolding add up fast. Anything above ground floor on a terrace typically needs scaffold towers or full scaffolding, and London’s tight streets sometimes mean a road closure permit, which adds further to the bill.
The application method plays a role too. Spray is usually cheaper per square metre on large, simple elevations because of the labour time saved, though the masking and containment work adds some of that back on complex sites.
Coating type sits at the far end of the scale. Standard masonry paint is the budget option; premium silicone, elastomeric or breathable specialist systems cost more upfront but come with a genuine difference in longevity to justify it.
We’ve written a full budgeting breakdown, with realistic ranges rather than vague promises, in our guide to the exterior house painting cost in London.
London has no shortage of exterior painting contractors, and unfortunately that includes a fair number who’ll turn up with a ladder, half a tin of paint and no public liability cover. Before you commit to anyone, it’s worth checking a handful of things properly.
Public liability insurance is non-negotiable, and you should ask to see the certificate rather than take a verbal assurance. A scaffold accident or a dropped tin of paint on a parked car is not something you want to be liable for because your contractor wasn’t covered.
Access equipment should match the job. A three-storey Victorian house needs proper scaffolding, not a homeowner’s ladder and a contractor standing on the top rung. Ask how access will be arranged and who’s responsible for booking it.
References and past work matter more than a glossy website. Ask to see two or three completed jobs of a similar size, ideally ones you can walk past and look at yourself.
A written warranty covering defects, not just a verbal “give us a call if anything goes wrong”, gives you something to point to if paint fails early. We’ll cover exactly what a proper defect warranty should include below.
Most exterior repainting in London doesn’t need planning permission. Repainting in the same colour, or a similar one, is generally covered under permitted development rights. Where it gets more complicated is listed buildings and properties in conservation areas.
If your property is listed, changing the colour or finish of the exterior, including switching from bare brick to a painted finish, or from a matt coating to a more reflective one, can require listed building consent, even though it’s “only paint.” Conservation areas sometimes carry an Article 4 direction removing permitted development rights that would otherwise apply, which means changes that are routine elsewhere in London need sign-off locally. Councils across boroughs like Kensington and Chelsea, Islington and Richmond upon Thames apply these rules with real consistency, and getting it wrong can mean being asked to reverse the work at your own cost.
Historic England’s official guidance sets out when listed building consent is needed and how the application process works. It’s worth reading before you commit to a colour change on a listed property: Historic England, Listed Building Consent Advice. If you’re at all unsure whether your property falls under these rules, we’ll flag it during your free site survey rather than let you find out the hard way after the scaffold’s already up.
A defect warranty isn’t just paperwork. It’s the difference between a contractor who stands behind their prep work and one who’s moved on to the next job the moment the invoice is paid. On our exterior projects, a 12-month warranty typically covers peeling, cracking or blistering that results from application or preparation issues, rather than damage from a one-off event like a burst pipe or storm damage to the wall itself.
The reason 12 months matters is that paint failure from poor surface preparation (insufficient drying time, inadequate priming, painting over damp render) often doesn’t show up immediately. It tends to appear only after the property has been through a full seasonal cycle: a wet autumn, a cold snap, and a hot, dry spell. A warranty that only covers the first few weeks isn’t really covering the risk that matters most.
If your property needs exterior work this year, the practical reality is that the sooner you get a survey booked, the more choice you’ll have over start dates before London’s contractors are fully booked through to spring. Prima Decor offers a free, no-obligation site survey and itemised quote. We’ll tell you honestly whether your property needs a full repaint or just targeted repairs and whether spray or brush is the better fit for your specific walls. Get in touch with Prima Decor to arrange a visit.
How much does exterior painting cost in London?
Costs vary widely depending on property size, condition and access, but most terraced and semi-detached homes fall somewhere between a few thousand pounds for a straightforward repaint and considerably more where render repairs or full scaffolding are needed. Our cost guide breaks down the main factors in detail.
How long does exterior paint last on a London property?
Standard masonry paint typically lasts 6 to 10 years in London’s climate, while premium breathable or silicone-based coatings can last considerably longer. Elevations facing the prevailing south-westerly wind and rain tend to wear faster than sheltered ones.
Do I need planning permission to repaint my house exterior?
Usually not, but listed buildings and some conservation areas with an Article 4 direction do require consent, particularly for colour changes. Check with your local council or ask us to flag it during your survey.
Is spray painting better than brush and roller for exteriors?
Neither is universally “better”. Spray suits larger, simpler elevations and detailed brickwork or render, while brush and roller gives more control on smaller jobs or where overspray risk needs managing closely.
How long does an exterior painting project take?
A typical terraced house takes 3 to 5 working days, including preparation, weather permitting. Larger detached properties or those needing render repair can take a fortnight or more.
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