Party Wall Surveying for Home Extensions

Home extensions typically involve works covered under sections 1, 2, and 6 of the Act—building on boundaries, working on party walls, and excavating near neighbouring properties—often requiring multiple types of notices.

For extensions, notices must be served 1-2 months before work begins. Section 1 and 6 notices require 1 month, while section 2 notices for work directly to party walls need 2 months’ notice.

When chimney breasts are connected, removal requires careful planning as your works directly affect your neighbour’s property. Both structural considerations and party wall procedures become more complex, requiring expert surveyor involvement.

Neighbours cannot unreasonably prevent your extension if it complies with planning regulations, but their concerns must be addressed through the party wall process, typically resulting in a Party Wall Award prepared by appointed surveyors.

Extensions with foundations within 3 metres of neighbouring buildings (or 6 metres if digging below their foundations) require Adjacent Excavation Notices and often specific protection measures detailed in a Party Wall Award.

Side return extensions typically involve building on the boundary and often require excavation near neighbouring properties, making Party Wall Notices necessary under sections 1 and 6 of the Act.

Professional assessment is needed to determine potential impacts on neighbouring foundations. Any risks identified will be addressed in your Party Wall Award with appropriate protective measures and monitoring requirements.

No, failing to follow proper party wall procedures for qualifying extension works is a legal breach that can result in expensive disputes, enforcement action, and difficulties when selling your property.