Homeowners sometimes want to create a doorway or other opening through a wall separating two properties.
This commonly arises where adjoining buildings are being combined or two units are under related ownership.
Because the work directly alters a shared wall, Party Wall requirements should be considered carefully.
Cutting into a party wall
Section 2 of the Party Wall etc. Act 1996 provides rights relating to particular works to party structures.
Creating a new structural opening may involve:
- cutting masonry;
- installing a lintel or steel beam;
- forming new bearings; and
- altering the structural function of the wall.
Our Section 2 Party Wall guide provides further detail.
Structural design is essential
The wall may carry floors, roofs or other loads.
An opening therefore needs to be properly designed.
Structural drawings should clearly identify:
- opening dimensions;
- support arrangements;
- lintels or steelwork;
- bearings; and
- temporary support where necessary.
Ownership does not remove every requirement
Even where the same person or related parties control both properties, the legal ownership structure should be established.
Separate leasehold or freehold interests can still be relevant.
Building Regulations
Forming a structural opening will also normally require consideration under Building Regulations.
This is separate from the Party Wall process.
What happens if the properties are later separated?
Future ownership should also be considered.
A doorway between separately owned properties may have legal, fire-safety and security implications beyond the Party Wall Act.
Simple Survey can assist
If you are proposing an opening within a party wall, send us the architectural and structural drawings.
Visit our Party Wall Surveyor page to discuss the proposed works.