Before you get stuck into that loft conversion or home extension, make sure you’re legally covered. If your project affects a shared wall, boundary, or structure between properties, you may need a Party Wall Agreement under the Party Wall etc. Act 1996.
This legislation exists to prevent disputes between neighbours when construction work impacts shared or adjoining elements like:
- The dividing wall between terraced or semi-detached homes
- Ceilings and floors between flats
- Shared garden or boundary walls
What Kind of Work Falls Under the Act?
The Act typically applies in these three scenarios:
- Changes to a party wall or structure, such as inserting beams or cutting into walls
- Construction on the boundary line, like extensions or garden walls
- Excavation work near neighbouring properties, such as digging foundations
Common examples include loft conversions, basement digs, extensions close to the boundary, or building garden walls on the line between two properties.
Serving a Party Wall Notice
If your project is covered by the Act, you’ll need to serve a formal Party Wall Notice to all affected neighbours – known as the Adjoining Owners.
Neighbours then have 14 days to respond.
How They Can Respond
There are three possible outcomes:
- They give written consent – you’re good to go
- They don’t reply – this is treated as a dissent, and surveyors must be appointed
- They object – each side can appoint their own party wall surveyor, or agree on one impartial expert
In most cases, the Building Owner is responsible for all surveyor fees — both their own and those of the neighbour(s).
Why It Pays to Be Proactive
A Party Wall Notice isn’t something you should slip through the letterbox without warning. A friendly chat first can make all the difference. Share your plans, show sketches, and be open about the process. Reassuring your neighbour early can prevent objections and delays later.
It’s also perfectly reasonable for neighbours to request the contact details of your surveyor or builder — transparency goes a long way in maintaining good relations.
Don’t Risk Delays or Disputes
Party wall rules are a legal requirement — and they’re more complex than they seem. Errors or oversights can lead to expensive setbacks. It’s always best to speak to a professional before serving notice or starting works.
Need Expert Help with Party Wall Matters?
Whether you’re planning a small extension or a major renovation, we can guide you through the legal process smoothly and compliantly. Email our friendly team at team@simplesurvey.co.uk for tailored advice and professional support you can trust.