When Your Neighbour Ignores the Party Wall Act – How to Protect Your Property and Legal Rights

It’s an all‑too‑common scenario, you glance out of the window and see scaffolding going up next door, or hear the engines of excavation equipment moving to the rear of your neighbours property. You were probably informed of the proposed work by a letter from your local Planning Department, but weren’t you supposed to receive a notice under the Party Wall etc. Act 1996 also?

Whether it’s a loft conversion, removing chimney breast, or a rear extension, certain works trigger legal obligations under the Party Wall etc. Act 1996 — and ignoring them can have serious consequences.

What Types of Work Are Covered?

Not all building works need a notice served under the Party Wall etc. Act 1996, so it is important to be aware what these notifiable works actually are.

Under the Act, a Building Owner must serve notice on you before starting:

• Alterations to a party structure – e.g., cutting into or raising the party wall, removing internal walls that connect to the party wall and taking out a chimney breast.

• Excavations that go deeper than the depth of a foundation on your own land, within a distance of 3 metres (or 6 metres in some cases).

• New walls that are built up to, or astride, the boundary line.

“No Notice, No Act”

The most critical principle to understand is “No Notice, No Act”. Recent caselaw has confirmed that the statutory dispute resolution process—and the rights of surveyors to make awards—only applies once a valid notice has been served.

Even if a notice has not been served, your rights under common law still apply. As such your neighbour has no statutory right to interfere with your property. Any work they do to a party wall, or if they try to access your land to do these works is a trespass or a private nuisance under common law.

Yet, having to take legal action against your neighbour is not in any way ideal and the best course of action is always to see if you can get them to serve notice and meet their statutory obligations. The following are some simple steps you can take to help deal with this situation;

In Advance of Works Commencing - In our experience, most people fail to serve notice (or do so very late in the process) because they simply did not realise they had to – the requirements of the Party Wall etc. Act 1996 are not a topic many would understand unless they had reason to. It could be said that those acting on their behalf such as their architects and building contractors should discuss this with them at an early stage, but that is not always the case. Therefore, bringing this to your neighbours attention by means of a calm conversation, can often prompt them to seek advice and serve the correct notices.

The key here is to do this as early as possible. The Act contains some statutory time periods that prevent notifiable works commencing until a set period of time has passed, so your neighbour will be worried that this process will cause them some delays. We often get calls from concerned Building Owner’s that have builders booked and have just found out their neighbour wants a notice served. So, try to speak to them as early as you can.

In addition to speaking to your neighbour, we would strongly recommend that you follow this up with a polite letter confirming what you discussed. Importantly, make sure to state that you believe the works are notifiable under the Act and you would like a notice served in advance of the works commencing. Make sure to keep a copy of this letter yourself.

If Works Are About to Start - So you’ve spoken to your neighbour and they haven’t served a notice when they really should have. Or, maybe you had no idea there were about to do the work and the builders have arrived. What should you do?

Clearly, trying to speak to them again would be the first step. You would need to ask them to stop all notifiable work until the legal requirements are met. Granted, this may not be as easy at this late stage but you need to try to explain that because no notice was served, they are not protected by the Act and are personally liable for any damage under common law.

In addition, you will need to issue a formal letter (delivered by hand with proof of service) advising them that you reserve the right to seek an interim injunction and advise them to seek their own legal advice on the matter without delay. It is important to state that you will also seek indemnity costs against them in court.

To supplement your own letter, most surveyors will write to your neighbour for a small charge – at Charterhouse Surveying, we small charge of £50 to provide this service. Whilst this letter may not be much different than your own, it can carry additional weight when coming from a chartered professional.

The goal at this stage is urge them to seek professional advice and serve notice without delay. If they do get professional advice, they will realise that serving notice will be the far simpler option for them. They will hopefully then realise that the threat of legal action is real and that judges are often highly critical of Building Owners who show a "cavalier disregard" for their statutory duties. At this stage it would be wise to take dated photographs of your property in the vicinity of the works to act as an ‘unofficial’ schedule of condition.

If The Notifiable Works Are Complete - If your neighbour ignores your attempts and proceeds without a notice, they lose the legal protections the Act provides, and the burden of proof shifts significantly.

If your neighbour serves notice and invokes the Act, a Schedule of Condition is typically recorded to document the state of your property before work begins. Without this record, if damage occurs, the court can often presume the works caused the damage unless the Building Owner can provide persuasive evidence to the contrary. This can be very difficult for them to do and will put them at a real risk of incurring high legal and remediation costs for any damage.

Unfortunately, the Act cannot be applied retrospectively for completed works. In practice, this means that surveyors cannot intervene in any official capacity. However, we can prepare reports that could be used in any dispute with your neighbour in attempt to get compensation for any damage.

If you would like to speak to someone regarding a party wall matter, please feel free to contact us here Charterhouse Surveying by telephone or email.

Disclaimer: This article is for general informational purposes only and does not constitute legal advice. For guidance specific to your situation, consult a qualified Party Wall surveyor or legal professional.