Hounslow’s planning enforcement team is patient, methodical and busier than most in most other councils in England. It receives around 450 to 500 complaints a year, has 50 or so enforcement notices on its books at any one time and publishes a monthly progress report listing every one of them, address by address.
It also has a long memory: notices served years ago are still being pursued to prosecution today. If you have received a notice or a warning letter from Hounslow, be aware that you are dealing with a council that tends to follow through.
It is not, however, a council whose notices stand up well to scrutiny. When Hounslow enforcement notices are tested at appeal, around two-thirds do not survive in the form they were served. Inspectors grant planning permission for the development under attack at double the national rate, and regularly rewrite the council’s requirements or extend its deadlines. We know this from experience: we have had a Hounslow enforcement notice quashed outright, with planning permission granted for the wall the council wanted demolished.
So the position is this: a notice is serious, but it can also be challenged. The most important thing to remember is that you need to act fast: from the date the notice is issued you have just 28 days to appeal, and once that window closes the right of appeal is gone for good. Don’t ignore it. Send us the notice and we will review it for free, tell you honestly where you stand and quote a fixed fee for challenging it, if that is the best approach.
How enforcement works in Hounslow
Hounslow’s team does not go looking for breaches. Cases begin with complaints, submitted through the council’s online form, and the council’s own reports say that only a minority of complaints end in formal action – the majority are resolved through negotiation. That means that even after an officer visit or a warning letter, there is usually room to talk, and the right approach at that stage can prevent a notice ever being served.
The first contact is usually a letter or a visit from an enforcement officer. In some cases the council serves a Planning Contravention Notice, a formal document requiring answers within 21 days — treat it with care, because what you say often decides what happens next. If the council concludes there is a breach and that action is worth pursuing, the enforcement notice follows, and it can be challenged on seven statutory grounds.
One more thing to understand about Hounslow: a notice here does not fade away. The council’s current caseload includes notices served in 2017 that are still being enforced, and prosecutions brought seven and eight years after the notice was issued. Once the compliance period expires, non-compliance is a criminal offence, and Hounslow prosecutes. The window for dealing with a notice properly is at the start, not the end.
What Hounslow enforces against
The borough’s enforcement caseload splits neatly along its geography.
In the west and centre — Feltham, Bedfont, Hanworth, Heston, Cranford and Hounslow itself — the running themes are outbuildings used as separate homes, houses converted into flats without permission, HMOs, second rear extensions and roof extensions beyond permitted development limits, and a steady trade in commercial breaches: vehicle-repair yards, storage uses on odd parcels of land near Heathrow, and the occasional shisha lounge. The council’s current notice list includes houses split into five flats, several outbuildings occupied as dwellings, and a pub converted to a shisha lounge without permission.
In the east — Chiswick, Brentford and the riverside, Isleworth, Osterley — the caseload is about detail and character: uPVC windows installed on the wrong elevation, slate roof coverings, render, boundary walls and outbuildings in sensitive locations, including on Chiswick Mall. In the borough’s conservation areas, works that would be permitted development elsewhere need permission, and Hounslow notices the difference.
And, as we know first-hand, the council also enforces against porches and front boundary walls. Which brings us to a case worth telling.
The wall Hounslow wanted demolished
At 72 London Road in Isleworth, our client built a brick boundary wall around his corner plot, lower at the front, taller along the side, matching the pillared wall next door. Hounslow served an enforcement notice requiring the whole thing to be demolished. Its objections came down to the shade of the bricks and the height of the front wall, which at 1.06 metres was six centimetres over the permitted development limit. Six centimetres.
We appealed. The inspector agreed with us on every point: the front wall kept an open frontage and was in proportion with the house, the taller side wall matched the fence directly opposite, and the brick colour caused no harm at all in a street that already contained a Royal Mail depot, a hotel forecourt wall and a building with one of the odder roofs in west London. The appeal was allowed, the notice was quashed, and planning permission was granted for the wall the council had wanted flattened. Our client kept every brick.
The case says a lot about enforcement in Hounslow. The council will serve a notice over six centimetres and a brick shade. And an inspector, looking at the same wall with fresh eyes, will find nothing wrong with it. If your notice feels disproportionate to what you have actually built, that instinct is worth testing.
Your chances are better than you think
Across the enforcement appeals against Hounslow decided over the past five years, planning permission was granted in one case in five — twice the national rate — and most of the remaining notices were varied, split or softened rather than upheld as served. In 2025 alone, inspectors granted permission at appeal for development under enforcement attack in Feltham twice, on Camrose Avenue and at the Griffin Centre on Staines Road.
An appeal is not the only route. Development that has stood long enough may be immune from enforcement, and a certificate of lawfulness can put the question beyond doubt — often the right answer for long-established outbuildings and conversions. In other cases a retrospective planning application, a redesign, or a negotiated solution with the case officer gets a better result than a fight. The right strategy depends on the notice, the property and the history, which is why we start by reading the notice properly.
What to do now
Three things. Check the date on the notice — the appeal window is usually 28 days and it is strict. Don’t ignore it — in Hounslow of all places, it will not go away. And take advice before you respond to anything, including a PCN or a friendly-sounding letter. The earlier we are involved, the more options stay open.
How we can help
We are specialists in enforcement notices. Our team are chartered town planners and former council officers, and we act on enforcement cases across London, including throughout Hounslow: outbuildings and conversions in Feltham and Heston, extensions and roof works across the borough, and walls, windows and works in Chiswick’s conservation streets. We win more than half of the appeals we take on — and in Hounslow, we have already shown the council’s notices can be beaten outright.
If you have received an enforcement notice, a PCN or any enforcement letter from Hounslow Council, send it to us today. We will review it for free, give you a straight answer about your chances, and quote a fixed fee for the work. The clock is already running; the sooner we see the notice, the more we can do.
