What is a party wall? Plus what to know before carrying out building work

semi-detached houses
(Image credit: Getty)

You have no doubt heard of the term but exactly what is a party wall and why is it important that you know about them?

The subject of party walls usually tends to come up when working out whether you will require a party wall agreement to build an extension, make alterations externally or convert a loft, and will most commonly affect owners of terraced or semi-detached houses. 

Natasha Brinsmead

Natasha was Homebuilding & Renovating’s Associate Content Editor and was a member of the Homebuilding team for over two decades. In her role on Homebuilding & Renovating she imparted her knowledge on a wide range of renovation topics, from window condensation to renovating bathrooms, to removing walls and adding an extension. She continues to write for Homebuilding on these topics, and more. An experienced journalist and renovation expert, she also writes for a number of other homes titles, including Homes & Gardens and Ideal Homes. Over the years Natasha has renovated and carried out a side extension to a Victorian terrace. She is currently living in the rural Edwardian cottage she renovated and extended on a largely DIY basis, living on site for the duration of the project.