10 key things an Adjoining Owner should know under the Party Wall Act
posted 23rd February 2026
If your neighbour (the Building Owner) is planning works that may affect your property, the Party Wall etc. Act 1996 gives you important protections — but it also has strict timeframes and procedures.
Here’s a practical guide from the Adjoining Owner’s point of view.
1) The Act is there to protect you, but it also allows the work to proceed
A common misunderstanding is that the Act lets you “block” the project. It usually doesn’t.
The Act’s purpose is to facilitate development while protecting neighbouring owners. As an adjoining owner, you can influence how and when works are done, and secure protections, but you generally cannot stop a neighbour from exercising rights the Act gives them.
2) Check whether the works are actually covered by the Act
The main categories are:
• Works to an existing party wall / party structure (section 2)
• A new wall at the boundary (section 1)
• Excavation near your building (section 6), including the familiar 3m / 6m rules for deeper excavation near foundations
The government guidance specifically highlights excavation within 3 metres (deeper than your foundations) and in some cases within 6 metres (the 45° line rule).
3) You are entitled to written notice — and it must be served properly
The Building Owner must serve notice before starting covered works. The notice should include key details such as:
• their name/address
• the property address
• a description of the proposed works
• the proposed start date
The guidance also notes notices can be served by email only if the recipient has agreed to receive them that way.
4) The notice periods matter (and differ by type of work)
The minimum notice periods are not all the same:
• At least 2 months for work to an existing party wall/structure
• At least 1 month for certain boundary wall and excavation notices
This is important because if your neighbour tries to start earlier without agreement, that may be procedurally wrong.
5) You usually have 14 days to respond — don’t ignore the notice
As the adjoining owner, you should reply in writing within 14 days.
If you do nothing, the consequences depend on the notice type, but for many common notices (existing party structures and excavation), a dispute is deemed to have arisen and the surveyor process is triggered.
6) Your main choices are consent or dissent (and consent does not waive all rights)
You can:
• Consent to the works, or
• Dissent / object (which starts the dispute-resolution process under the Act)
A very important point: if you consent, you do not lose your rights. If damage occurs later, or a dispute arises later, the dispute-resolution procedure can still be used.
7) If there is a dispute, surveyors decide the “time and manner” of the works
Where there is a dispute, the Act provides a formal route:
• both owners can appoint one Agreed Surveyor, or
• each appoints their own surveyor, and a third surveyor is selected as backup
The surveyor(s) produce a Party Wall Award, which typically sets out:
• what works are allowed
• how and when they are carried out
• protective measures
• access arrangements
• who pays the fees/costs
This is one of your main protections as an adjoining owner.
8) A Schedule of Condition is not mandatory — but it is one of the best protections you can insist on
The GOV.UK explanatory booklet is clear: a Schedule of Condition (photos + written record of your property’s condition before works start) is not a legal requirement, but it is strongly recommended.
Why it matters:
• it helps identify whether any later cracking/damage is genuinely new
• it reduces arguments
• it makes damage claims easier to prove
If you’re an adjoining owner, this is often one of the smartest things to ensure is included in the Award.
9) You have rights to protection, compensation, and even security for expenses
As an adjoining owner, your key protections include the right to:
• not suffer unnecessary inconvenience
• have your property protected where reasonably necessary
• be compensated for loss or damage
• request security for expenses (a financial safeguard before works begin)
The Act itself provides for compensation for loss/damage, and section 12 allows an adjoining owner to require security for expenses before works start. The GOV guidance also specifically lists this as a right.
10) Party Wall matters are separate from planning/building regs — and mostly civil
Even if your neighbour has:
• planning permission, and/or
• building regulations approval
they still need to follow the Party Wall Act procedure where applicable.
Also, Party Wall issues are generally civil matters. The guidance states the Act contains no direct enforcement procedure, but if work starts without proper notice, an adjoining owner may seek a court injunction or other legal redress.
Bonus point: access rights exist, but there are rules
The Act can require you (or occupiers) to allow access if it is necessary for works under the Act — but the Building Owner must usually give 14 days’ notice before exercising rights of entry (except emergencies).
Practical tips for an Adjoining Owner
• Reply in writing within 14 days (even if it’s just to say you’re taking advice)
• Keep copies of:
o the notice
o plans
o correspondence
o photos of your property
• If the works are substantial (e.g. basement/excavation), consider:
o appointing a party wall surveyor
o asking for a robust Schedule of Condition
o asking about security for expenses
• If your neighbour starts without notice, take advice quickly — delay can make things harder
