Our RICS-accredited party wall surveyors cover the whole London Borough of Barnet, supporting homeowners, developers and builders through their obligations under the Party Wall etc. Act 1996.
Party Wall Surveyors in Barnet
Barnet is one of London’s largest and greenest boroughs, characterised by leafy suburban streets, generous semi-detached homes and a strong appetite for extending and improving property. We advise building owners in Finchley, Hendon and Mill Hill, and act as impartial surveyors for adjoining owners in Edgware and Golders Green. From 1930s semis to substantial detached houses, we ensure your works meet the Act and your neighbours are properly protected.
Common party wall works in Barnet
The borough’s suburban housing stock strongly influences the projects we see. The inter-war semis and detached homes across Finchley, Hendon and Mill Hill are prime candidates for large rear and side extensions, which frequently involve building astride or up to the boundary line. Loft conversions to create extra bedrooms are extremely common in Golders Green and Edgware, often needing steel beams bearing on the party wall. Deeper foundations and the occasional basement in the larger Mill Hill and Totteridge homes engage the three and six metre rule and may require excavation notices. Outbuildings and garden rooms near boundaries are another regular query.
How the party wall process works
It begins with serving valid party wall notices on affected neighbours, typically one to two months before works start. If a neighbour dissents or fails to respond, surveyors are appointed and draw up a party wall award setting out the terms. A schedule of condition is prepared beforehand to record the neighbour’s property, protecting both owners should damage be alleged.
Building owners & adjoining owners
If you are the one building, our page for building owners explains how to serve notice correctly and stay compliant. If a neighbour’s works affect you, our guidance for adjoining owners sets out your rights and why appointing a surveyor usually costs you nothing.
Why choose us
We are RICS-accredited party wall surveyors who understand Barnet’s suburban housing and the extension-heavy nature of local projects. We act promptly, keep fees proportionate and explain everything in plain English, so your build progresses without unnecessary delay.
FAQs
Do I need a party wall surveyor for a rear extension in Finchley?
If you are excavating foundations near a neighbour’s property or building on the boundary line, notice is required and a surveyor is usually advisable.
My neighbour started work without serving notice. What can I do?
You may be entitled to seek an injunction and you should take advice quickly. We can help clarify your position as an adjoining owner.
How far in advance should I serve notice?
For most works, one to two months before starting, so allow time for the process when planning your build.
Planning works in Barnet? Contact us for clear, RICS-accredited party wall advice, or explore our other London locations.

