London guidance on security for expenses under the Party Wall etc. Act 1996.

Security for Expenses

Security for expenses is not a standard demand in every case, but it can be an important safeguard where the risk profile justifies it.

Ask About Security

Security for expenses is one of the most technical and misunderstood parts of the Party Wall etc. Act 1996. Some adjoining owners assume it is automatic whenever they feel nervous. Some building owners assume it is never justified and only used to obstruct projects. Both views miss the point. Security for expenses is a statutory safeguard that may be requested in the right circumstances to protect an adjoining owner from being left in difficulty if works stop at an awkward stage or if there is a real practical risk around completion or reinstatement. This article explains what it is, when it may be appropriate and how it is usually handled in practice.

What does security for expenses actually mean?

Security for expenses is not a penalty and it is not the same as surveyor fees. In broad terms, it is a form of financial protection that may be required before the building owner begins work under the rights conferred by the Act. The idea is to guard against the risk that the adjoining owner is left exposed if the works stop mid-way or if reinstatement or protective work becomes necessary and the building owner cannot or does not deal with it.

It is usually discussed in the surveyor process, often in more complex or higher-risk matters such as significant excavation, basement work or intrusive structural projects. It is not routine on every small domestic job. Where it is raised, the key question is whether the facts justify it, not whether one side simply prefers it. Our basement service, excavation service and Award service are often relevant where this issue arises.

Circumstances that may increase the chance of security being discussed

  • Deep excavation or basement work where an unfinished stage could materially affect the adjoining property.
  • Projects with unusually high temporary works risk or complex structural sequencing.
  • Concerns about the funding, delivery or continuity of the proposed works.
  • Cases where the consequences of stopping mid-project would be especially serious for the adjoining owner.
  • Situations where the surveyors consider protective financial security proportionate to the risk.
  • Projects where the statutory rights being exercised are broader than a modest routine domestic scheme.

When is security for expenses most often relevant?

In day-to-day London Party Wall practice, security for expenses tends to appear most often on deeper or more complex projects rather than small routine works. Basement schemes are the classic example because excavation, underpinning and temporary support can create a stage at which the adjoining owner may reasonably worry about what happens if the works stall. Some structural alteration projects can also raise the issue, particularly where the project phasing is demanding.

The question is always one of proportionality. A minor chimney breast removal or simple opening in a party wall may not justify the same approach as a major dig beneath an existing terrace. That is why surveyor judgment matters.

What security is not

Not the same as… Why the distinction matters
Surveyor fees Security for expenses is about project risk, not simply paying the professionals dealing with the dispute.
Compensation for proven damage Compensation is generally dealt with if damage actually occurs; security is a protective measure before that stage.
A general neighbour “comfort payment” The issue is statutory protection, not buying goodwill or convenience.
An automatic right in every case It depends on the circumstances and proportionality of the request.

How should owners approach the issue?

Building owners should not panic if the subject is raised. Sometimes it reflects a legitimate concern about the nature of the works rather than hostility. Equally, adjoining owners should avoid using security for expenses as a blunt negotiating tool in matters where the risk does not realistically justify it. The strongest position on either side usually comes from good evidence, clear drawings, competent professional teams and a proportionate Award process.

If your London project may raise this issue, early advice can prevent it becoming a last-minute dispute point. Hourican Associates can review the scope, the risk profile and the likely statutory route before positions harden unnecessarily.

Frequently Asked Questions

No. It may be available in the right circumstances, but it is not a routine entitlement on every job.
An adjoining owner may request it before the building owner begins work under the rights conferred by the Act.
It is more commonly discussed on higher-risk projects such as basement and deep excavation work than on small routine domestic matters.
No. It is a protective mechanism, not an accusation of wrongdoing.
No. It is a precautionary safeguard before the work proceeds, whereas damage issues are dealt with if and when they arise.
Yes, in practice this is often where the issue is considered and recorded if it is justified.
Richard Hourican. Specialist Party Wall surveyor, London

Richard Hourican, Company Director

BSc (Hons). HND Build. MCIOB. C.Build E MCABE. ARICS. MFPWS. MPTS

As a specialist Party Wall surveyor, Richard Hourican will protect your interests during building works.

Are you planning a building project – perhaps an extension, loft conversion or basement – that is on or adjacent to your property’s boundary line? Or has a ‘Party Wall’ notice dropped on the doormat informing you of a neighbour’s impending works?

It’s essential to understand all the implications of building plans. If you don’t, it could cost thousands. Our job is to ensure everything is done correctly – and that it doesn’t!

Contact us


Follow us:

95 Google Reviews for London Party Wall Surveyor
Google logo
Mike Crofts
Mike Crofts
05 Sep 2022

Richard is a professional and diligent surveyor. I found him very courteous and pragmatic to deal with. Would recommend on house surveys, schedules of condition and PWA.

David Lovell
David Lovell
16 May 2022

I am very happy with the service this company provided. Both quick and friendly made the whole process of dealing with the Party Wall Agreement easy. Many thanks Dave

Steve Hobbs
Steve Hobbs
10 May 2022

Friendly and efficient service.We would use this company again.

Martorana Nicola
Martorana Nicola
14 Apr 2022

Very good experience, good communication and smooth process. Quick too.

maya perkins
maya perkins
29 Mar 2022

It has been a delight working with Richard. I had 5 party walls to sort involving a neighbour either side and owners of the flat above me. From start to finish it took approximately 3 weeks and was carried out and completed very efficiently. His response time was excellent and I would not hesitate to recommend his services. Jamie

Emma & Charlie
Emma & Charlie
22 Nov 2021

Thank you Richard for your services. It was great to work with you. The process was very efficient and helpful at all stages.

V Macgregor
V Macgregor
07 Oct 2021

Excellent work for Party Wall agreement - Richard was very helpful and efficient. Would throughly recommend.

Jonathan Drysch
Jonathan Drysch
13 Sep 2021

Richard was absolutely brilliant in getting my party wall agreements for a complex loft extension across the line, throughout lockdown too, when getting access was challenging. He was very helpful when I then had to revert after a new obstacle arose, which needed his advice and a subsequent/additional award at short notice. Very much recommend - thanks Rich!

D G
D G
27 Jul 2021

We engaged Richard Hourican for some party wall work and his response-time, ongoing communication, pricing and service were all excellent. He also went further and sorted us out with an engineer, who was also excellent. Highly recommended.

Elliot Bates
Elliot Bates
22 Jul 2021

Richard was very efficient, fuss-free, and well organised. A pleasure to work with.

Jonathan Mun
Jonathan Mun
02 Jul 2021

I engaged Hourican & Associates for a Party Wall Agreement with 2 adjoining neighbours who are both tenants. Richard was very responsive from first contact and remained so throughout the consultation and when the Awards were issued. Very professional at all times and answered any questions in a timely manner. Our neighbours, both tenants and landlords didn't have any complaints either. I have recommended Hourican to some friends who may need similar services in the near future and wouldn't hesitate to use them again if needed.

Morgan Nelson
Morgan Nelson
05 Sep 2020

Great Service, even with the impediment of a 2020 lockdown. Great communication

Contact us for advice on how the Party Wall Act applies to your project & get a free quotation.

Contact us