Party Wall Process

When to Start the Party Wall Process for Your Extension or Loft Project

Planning a home extension or loft conversion is exciting — but it’s also important to think about the Party Wall process early. Many homeowners leave it too late, not realising that the procedure can take several weeks (or even months). Starting at the right time helps avoid delays to your build and keeps relations with your neighbours positive.

Why Timing Matters in the Party Wall Process

The Party Wall etc. Act 1996 requires you to serve formal notice on your neighbours before starting notifiable works, such as:

Building an extension close to a boundary
Loft conversions involving party walls or chimney breast removal
Excavations within three or six metres of a neighbouring structure

If your neighbours dissent (which is common), surveyors need time to inspect, prepare a Schedule of Condition, and agree an Award. This process can easily add 6–8 weeks before you can start work.

When Should You Begin?

We recommend beginning the Party Wall process as soon as you submit your planning application (or, if no planning permission is needed, at least three months before your proposed start date).

This ensures:

You have enough time to serve notices properly
Any disputes can be resolved without delaying your build
Surveyors can carry out inspections well in advance

Typical Party Wall Timeline

Flowchart: From instruction to completion

Instruction – Homeowner appoints surveyor
Notice Served – Neighbours formally notified (1–2 weeks)
Response Period – Neighbours have 14 days to reply
Surveyor Appointments – If dissent, surveyors appointed (1 week)
Schedule of Condition – Inspection of neighbour’s property (1–2 weeks)
Award Preparation & Agreement – Surveyors draft and agree Award (2–4 weeks)
Works Begin – Once Award is served

Key Takeaway

If you are planning a loft conversion or extension, start the Party Wall process early and ideally alongside your planning application. This way, you can keep your project on track and avoid last-minute stress.

How long does the Party Wall process take?

If neighbours consent quickly, it may take just 2–3 weeks. If surveyors are involved, allow 6–8 weeks or more.

Can I serve notice myself?

Yes, but many homeowners prefer a surveyor to do it, ensuring accuracy and avoiding invalid notices.

What if my neighbour doesn’t respond?

If no reply is received within 14 days, it’s treated as dissent, and surveyors must be appointed.