Introduction

Party wall disputes commonly arise where building works affect a shared wall or structure between neighbouring properties.
In England and Wales these matters are governed by the Party Wall etc. Act 1996, which sets out the legal framework
for undertaking works that may affect adjoining owners.

Where disputes arise between neighbours, Chartered Building Surveyors and expert witness surveyors are frequently
appointed to provide independent professional advice regarding the nature of the works, potential risks, and any
damage caused.

Expert witness surveyors may also be instructed by solicitors to provide independent reports for court proceedings
where party wall disputes escalate into litigation.

What is the Party Wall etc. Act 1996

The Party Wall etc. Act 1996 is legislation that regulates building works affecting shared structures
between neighbouring properties.

The Act applies to works such as:

• Cutting into a party wall
• Raising or thickening a party wall
• Excavations near neighbouring structures
• Construction on the boundary line
• Loft conversions and extensions affecting shared walls

The purpose of the Act is to protect neighbouring property owners and ensure that construction work
is carried out safely and responsibly.

Common Party Wall Disputes

Party wall disputes can arise in many situations including:

• Loft conversions affecting shared walls
• Rear extensions close to neighbouring foundations
• Basement excavations in urban areas
• Structural alterations to party walls
• Damage to neighbouring property during construction
• Failure to serve proper party wall notices

Where disputes arise, surveyors may be appointed to resolve the issue or assess any damage caused.

The Role of the Party Wall Surveyor

Party wall surveyors are appointed to administer the procedures set out in the Party Wall etc. Act 1996.

Their responsibilities may include:

• Reviewing proposed building works
• Preparing party wall awards
• Inspecting neighbouring property
• Recording schedules of condition
• Assessing any damage caused by construction works

The surveyor’s role is to act impartially and ensure that the rights of both building owners
and adjoining owners are protected.

When Expert Witness Surveyors Are Required

In some cases party wall disputes escalate into formal legal proceedings.

Where this occurs, solicitors may instruct expert witness surveyors to provide independent
technical evidence relating to:

• The cause of structural damage
• Whether works complied with the Party Wall Act
• The cost of remedial works
• Diminution in property value

These expert reports may be used in court or during settlement negotiations.

Schedules of Condition

Before construction works begin, surveyors often prepare a schedule of condition of neighbouring property.

This document records the condition of the adjoining property and helps identify whether
any subsequent damage has been caused by construction works.

Schedules of condition are commonly relied upon in party wall disputes to determine liability
for damage.

Assessing Damage and Compensation

If construction works cause damage to neighbouring property, the building owner may be
required to pay compensation.

Expert surveyors may assess:

• The nature and cause of damage
• The cost of repairs
• Any diminution in property value

These assessments help determine the appropriate financial settlement between parties.

Why Solicitors Instruct Expert Surveyors

Solicitors frequently instruct expert witness surveyors because party wall disputes
often involve technical issues relating to construction, structural behaviour and
property valuation.

Expert surveyors provide:

• Independent professional opinion
• Technical analysis of construction works
• Reports suitable for court proceedings
• Evidence supported by professional standards

Conclusion

Party wall disputes can involve complex legal and technical issues. By instructing
experienced Chartered Surveyors or expert witness surveyors, property owners and
solicitors can obtain reliable professional advice to help resolve disputes fairly
and efficiently.