What does the Party Wall Act say about service?
Section 15 of the Party Wall etc. Act 1996 sets out the permitted methods for serving notices and other documents under the Act. It provides that a notice may be served by:
- Delivering it to the person
- Leaving it at their last known place of abode or business
- In the case of a body corporate, leaving it at the body's registered or principal office
- Sending it by post in a letter addressed to that person at their last known place of abode or business
Email is not mentioned in Section 15. The Act predates widespread email use and has not been amended to include electronic service.
Does that mean email service is invalid?
Not necessarily — but it means the position is uncertain rather than settled, and uncertainty in the context of a legal notice that triggers statutory deadlines is a risk worth avoiding.
Email service may be valid where both parties have expressly agreed in advance that email is an acceptable method of communication for the purposes of the Act. Some surveyors include a provision in their correspondence confirming that both parties accept service by email, and courts have generally been reluctant to allow purely technical procedural objections to defeat otherwise valid notices. However, there is no decided case law definitively establishing that email service satisfies Section 15 in the absence of such an agreement.
The safest position is to serve party wall notices by post or personal delivery, as Section 15 expressly provides — and to use email only as a supplement, not a substitute, unless you have written confirmation from your neighbour that they accept email service.
What are the practical risks of serving by email only?
The main risk is that an adjoining owner — or their surveyor — later argues that the notice was not validly served, meaning the statutory notice period never began to run. If that argument succeeds, any works carried out in reliance on the notice may be found to have been carried out without valid notice, with the same consequences as failing to serve notice at all: potential injunction, claims for legal costs, and the need to re-serve and restart the notice period.
In practice, many neighbours simply respond to an emailed notice without raising any objection to the method of service. But if a dispute later arises — particularly if a surveyor is appointed by the adjoining owner — the validity of service may become a live issue at exactly the moment you need the process to run smoothly.
What about serving notice by WhatsApp or other messaging apps?
The same analysis applies. WhatsApp, text message, and other electronic messaging platforms are not listed in Section 15 and their use as a method of service carries the same uncertainty as email. A party wall notice sent by WhatsApp is unlikely to be considered valid in the absence of an express agreement to that effect.
What is the best way to serve a party wall notice?
First class post remains the most straightforward and clearly valid method of service for the majority of residential party wall notices. It is simple, low cost, and squarely within the methods Section 15 provides. Keep a copy of the notice and a note of the date on which it was posted.
If you want additional evidence of service — particularly where you have any reason to think your neighbour may dispute receipt — recorded delivery provides a tracked record. The Act does not require recorded delivery, but it is useful evidence if the question of service is later disputed.
Personal delivery — handing the notice directly to the adjoining owner — is also clearly valid under Section 15 and provides immediate certainty that the notice has been received. If you deliver in person, make a note of the date, time, and circumstances of delivery.
Can my neighbour agree to receive the notice by email?
Yes. If your neighbour expressly confirms in writing that they are happy to accept the notice by email, this significantly strengthens the position that email service is valid in your specific case. The confirmation should be in writing — ideally by email so you have a record — and should be obtained before you send the notice rather than after.
What should I do if my neighbour has no fixed address or is hard to contact?
Where the owner of a neighbouring property cannot be found after reasonable enquiry, Section 15 permits the notice to be fixed to a conspicuous part of the premises to which it relates. If the neighbouring property is empty, it may also be addressed to 'The Owner' and posted through the letterbox or fixed to the door. In cases of genuine difficulty locating an adjoining owner, the circumstances should be documented carefully in case the method of service is later questioned.
Summary: email and the Party Wall Act
- Email is not listed as a valid method of service in Section 15 of the Act
- Email service may be valid where the adjoining owner has expressly agreed to it in writing
- Serving by email without such agreement carries the risk that service is later held to be invalid
- First class post is the simplest, clearest, and most widely used method of service
- Recorded delivery and personal delivery provide additional evidence if receipt is later disputed
- Using email as a supplement to postal service — to alert your neighbour that a notice is on its way — is sensible and carries no risk
Our notice documents are formatted for postal service and include guidance on serving them correctly. Each notice includes the acknowledgement form and 10-day reminder letter your neighbour will need to respond — generate yours here.