Warmer weather brings a rush of garden makeovers – but some projects can bring unwanted attention from neighbours and local authorities09:59, 14 Jul 2026Updated 10:18, 14 Jul 2026When the sun finally shows up, Brits waste no time getting outside. Decking goes down, the BBQ comes out and overgrown borders suddenly become a weekend emergency.‌But while most garden projects are harmless, a handful can spark neighbour complaints – and in some cases lead to council enforcement and hefty bills. Experts at Yell.com say interest in “garden rules”, decking permissions and neighbour disputes surges in late spring and summer, with searches rising sharply as people start upgrading outdoor spaces. It has identified some of the most common garden slip-ups that can cause problems – and how to avoid them.‌Decking can be a planning trap – especially on sloped gardensDecking is one of the go-to summer upgrades, but it’s also a regular flashpoint because homeowners often assume permission is never needed. In England, decking may be allowed under permitted development, but there are limits – including height rules and restrictions on how much of the garden ends up covered once you factor in other extensions and structures. Extra rules can apply if you’re in a conservation area or the building is listed.‌One of the biggest mistakes is building on uneven ground: parts of a deck can accidentally sit higher than intended, pushing it into “needs permission” territory. Avoid it: measure from the right ground level, check restrictions for your property, and don’t rely on guesswork if the garden slopes.Conservatories and garden rooms - popular, and easy to get wrongSunrooms, conservatories and garden rooms can feel like a straightforward way to add space, but they’re not a free-for-all. Many builds can still fall under permitted development rules, but what’s allowed depends on factors like height, overall footprint, distance to boundaries and whether previous owners have already used up some of the property’s development allowances.‌If you build without the correct permissions (or ignore building rules), you could face enforcement – including being told to alter or remove the structure, with financial penalties possible on top. Avoid it: check whether earlier extensions affect what you’re allowed to do now, and confirm whether you need planning permission and/or building regs sign-off before work starts.When untidy gardens become a nuisanceA scruffy garden isn’t automatically illegal. But if it starts affecting neighbouring homes – think vermin, strong odours, piles of waste or conditions that could impact health and enjoyment – it can become a statutory nuisance.Under the Environmental Protection Act 1990, councils can step in where a garden is creating wider problems. If a complaint is upheld, you may be told to tackle the issue within a set timeframe.‌Ignore formal action and it can escalate, with penalties potentially running into hundreds of pounds and, in more serious cases, court action and larger fines plus costs. Avoid it: keep waste under control, deal with smells quickly, don’t let weeds and rubbish build up, and tackle pest risks early – especially during hot spells when problems worsen fast.Fire pits, bonfires and BBQ smoke: fun until it drifts next doorOutdoor cooking and fire pits peak in summer – and so do smoke complaints. Bonfires aren’t automatically banned, but persistent smoke or fumes that interfere with neighbours can be treated as a statutory nuisance. The same goes for BBQs if smoke repeatedly blows into other homes, particularly late at night or in tightly packed streets.If authorities issue a warning and it’s ignored, enforcement and significant fines may follow. Avoid it: position BBQs and fire pits away from fences, sheds and dry plants, consider wind direction, keep gatherings considerate, and avoid burning damp waste that creates thick smoke.‌Landscaping and raising levels: the neighbour-row starterLandscaping sounds low-risk, but major changes – particularly raising or lowering garden levels, building retaining walls, or altering drainage – can have knock-on effects. If water run-off changes direction, boundaries are affected or neighbouring land is disrupted, complaints can follow.In some cases, councils can require unauthorised work to be changed or removed, and ignoring notices can trigger legal action and extra costs. Avoid it: think about drainage before you dig, don’t assume “it’s just soil” means it’s harmless, and be cautious if your plan affects boundaries or shared fences.Article continues belowBottom lineSummer is the season for garden upgrades – but it’s also when disputes spike. If your plans involve building, raising levels, or anything that could affect neighbours, a quick check of the rules (and a chat over the fence) can save a lot of hassle later.