A property litigation solicitor has warned that owning a property does not automatically give homeowners complete freedom to do as they please within its boundaries. The warning follows a 14-year neighbour dispute over a garden fence in Essex that reportedly left a couple facing more than £130,000 in court costs, illustrating how financially ruinous such disagreements can become.
Five common actions neighbours can legally challenge
Senior partner and property litigation solicitor Alex Cook of Helix Law is urging homeowners to be aware of specific situations where neighbours may have genuine legal grounds to challenge their actions. These include building an extension, trimming trees, installing CCTV, altering access, and putting up fences.
Mr Cook said: "People naturally assume that if something is on their land, it is entirely up to them. In reality, English law layers a whole set of neighbour-facing rights and duties on top of ownership, covering everything from shared walls to trees, boundaries, privacy and access. None of this means a neighbour can simply object to anything they dislike, but it does mean there are specific situations where they have a genuine legal basis to challenge what you're doing. As recent cases show, getting these disputes wrong can become extremely expensive, so it pays to know where those lines sit before you start work."
Extensions, trees, and fences
Extensions and major alterations often fall under the Party Wall etc. Act 1996, which requires formal written notice to affected neighbours before work begins. A neighbour can also raise objections during planning and may challenge a completed extension if it violates planning permission or building regulations.
For trees and hedges, ownership is determined by where the trunk is rooted, not which side branches overhang. Cutting back growth that damages a neighbour's tree, or contravening a Tree Preservation Order, can be challenged. High hedges over two metres may be subject to complaints under the Anti-social Behaviour Act 2003.
Fences are a frequent source of disputes because boundary lines on title documents are often drawn to a general scale. Erecting or altering a fence can trigger objections if it intrudes on a neighbour's property or violates height restrictions.
CCTV, access, and avoiding disputes
Residential security cameras and video doorbells are only exempt from UK data protection law if they record within the homeowner's own boundary. If the field of view extends into a neighbour's garden or windows, it may fall under UK GDPR and the Data Protection Act 2018. A neighbour can request to view footage of themselves or complain to the Information Commissioner's Office.
Blocking or altering access where a neighbour holds an easement or right of way can also provide grounds for action. Easements remain with the land, and interfering with them, even inadvertently, can lead to disputes.
Mr Cook advises preparation before starting work: "The biggest mistake I see is homeowners ploughing ahead and only checking their legal position once a neighbour has already objected. A short conversation and a bit of paperwork at the start, whether that's a title check, a party wall notice or simply asking a neighbour if a camera angle bothers them, is far cheaper than untangling a dispute once positions have hardened. None of this means a neighbour can block a project just because they don't like it. But where a genuine right or protection is in play, it's far better to know that before you start digging, building or cutting, not after."
