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Party Wall etc. Act 1996

What Is The Party Wall Act?

 The Party Wall etc Act 1996 provides a statutory procedure to follow when building work involves a 'party wall' or 'party fence wall', certain excavations close to neighbouring buildings, and new walls at  boundaries. The Act permits owners to carry out certain specific works, including work to the full thickness of a party wall, whilst at the same time protecting the interests of anyone else who might be affected by  that work. The Act is designed to avoid or minimise disputes by making  sure property owners notify their neighbours in advance of certain  proposed works.


The Act provides a mechanism for resolving disputes and enabling works to proceed. It also requires that, where the adjoining owner does not ‘agree’ in writing to the works, a surveyor or surveyors will  determine the time and way in which those works are carried out.

What Is a Party Wall?

Party walls usually separate buildings belonging to different owners, but could include garden walls built astride a boundary – known as party  fence walls. Where a wall separates two different size buildings often  only the part that is used by both properties is a party wall, the rest belongs to the person or persons on whose land it stands.


The “etc” within The Party Wall etc Act 1996 is so included because  the provisions of the Act are not limited to party walls, they also  include party structures and party fence walls. Such structures include floors/ceilings between flats or apartments for example.


Section 20 of the Act defines each:


“party fence wall” means a wall (not being part of a building)  which stands on lands of different owners and is used or constructed to  be used for separating such adjoining lands, but does not include a wall  constructed on the land of one owner the artificially formed support of  which projects into the land of another owner;

“party structure” means a party wall and also a floor partition  or other structure separating buildings or parts of buildings approached  solely by separate staircases or separate entrances;

What Is Included?

 There are certain items of work that you can only be done after notifying the adjoining owners and either receiving written agreement of the neighbour or with a Party Wall Award prepared by a surveyor or surveyors.


Notifiable works include (but are not limited to):


  • cutting into a wall to take the bearing of a beam, for example for a loft conversion
  • inserting a damp proof course, even if only to your own side of a party wall
  • raising a party wall and, if necessary, cutting off any objects preventing this from happening
  • demolishing and rebuilding a party wall
  • underpinning a party wall or part of a party wall
  • weathering the junction of adjoining walls or buildings by cutting a flashing into an adjoining building
  • excavating foundations within three metres of a neighbour’s structure and lower than its foundations
  • excavating foundations within six metres of a neighbour’s structure  and below a line drawn down at 45° from the bottom of its foundations.


Notices are also required if it is proposed to build a new wall on the line of junction (boundary line). A party wall surveyor will usually  be able to confirm which work is notifiable and advise the notice period and type of notice required.

What Isn't Included?

 The Act relates only to certain specific types of work and is  permissive in nature. It should not be seen as a method of objecting to or preventing works and it is not intended to be applied to minor jobs that do not affect the structural integrity or loading of a party wall.


It is generally agreed that works such as fixing plug sockets,  screwing in shelving or replastering walls are minor works and do not  require a notice.

Party Wall Notices

For the workings of the Act to be instigated, a valid Party Wall Notice (or Notices) must first be served. This is the first stage of the process and, without the service  of valid notices, no further action can be taken under the provision of  the Act.


Written notice must be served on adjoining owners at least two months  before starting any party wall works (one month for works to the line  of junction or excavations). All adjoining owners must be served a  notice and there are likely to be instances where there is more than one  adjoining property and more than one owner of each property (ie: if the  adjoining property is split into flats and owned on a leasehold basis,  notices will be required to both leaseholder and freeholder of all flats  affected by the works). Works to a party wall, or those affecting a  ceiling or floor, will also require a notice to adjoining owners living  above or below.


Valid notices must contain the following information as a minimum:


  • The name and address of the building owner;
  • The nature and particulars of the proposed work including plans, sections and details of construction methods
  • The date on which the proposed work will begin.


It is essential to include the correct details on a notice as, if  they are deemed invalid, then any subsequent actions are also invalid.

Responding to a Notice

 On receipt of a notice, an adjoining owner has three possible courses of action:


  1. To consent to the works going ahead as described. A consenting  Adjoining Owner retains all rights under the Act including the right to  appoint a surveyor later in the process if there is a dispute at that  stage.
  2. To dissent and appoint a surveyor. The Act allows the Owners to  concur in the appointment of a single ‘Agreed’ surveyor or appoint their  own separate surveyor.
  3. Issue a counter notice to set out certain conditions required for  the benefit of the Adjoining Owner. The Counter Notice should set out  what additional or modified work the Adjoining Owner would like to be  included for his benefit


In most cases, if the adjoining does not respond within 14 days then a  deemed dispute is said to have occurred and the person carrying out the  work must appoint a surveyor to act on the adjoining owners behalf.


If adjoining owners provide written consent to the works as set out  within the notices, then there is no dispute to resolve and no further  need for party wall surveyors or, indeed, the Party Wall Act. Assuming  work proceeds as detailed within the notice and no damage is caused,  then no further involvement is necessary.

Resolving Disputes

 If adjoining owners dissent to the works (or if no response is received  and a deemed dissent has arisen) then a dispute has occurred which must  be resolved under the requirements of Section 10 of The Act. It is worth  reiterating that the Act is one of enablement, it is not there to  prevent works from taking place and it offers a route to end disputes at  every stage. Where written agreement is not given, the solution the Act  provides is for both parties to appoint an ‘agreed surveyor’ who will  act impartially or for each owner to appoint a surveyor who in turn  appoint a third surveyor. The surveyors then work together to agree the  terms under which work may proceed. The surveyor(s) will review the  plans, notices and structural details of the works and, after  considering the impact of the works, will draw up an agreement which  sets out the terms under which work can be carried out (the Award). 

The Party Wall Award

 The award will usually record the condition of the relevant part of  adjoining property before work begins (this is not a requirement under  the Act but is considered good practice and is duly provided by most  good surveyors). The award may also grant access to both properties so  that the works can be safely carried out and the surveyor/s can inspect  work in progress.


Generally, the building owner who started the work pays for all  expenses of work and the reasonable costs incurred by all parties as a  result, this will include the surveyors fees for both Building Owner and  Adjoining Owner.

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