Around 3.7 million people have suffered property damage due to neighbour renovations in the last five years.
Only a third of neighbours accepted responsibility for damages and a fifth of neighbours paid nothing towards damages caused by their home makeovers.
The research, from Direct Line’s SELECT Premier Insurance, also revealed that only 33 per cent of neighbours accepted responsibility for damage and 30 per cent blamed someone else.
Almost one in six people (17 per cent) did not directly confront neighbours about damage to their property, despite the average cost to repair damages being £533.
Nick Brabham, head of SELECT Premier Insurance, says: “In the UK we take pride in our homes with many seeing extending and renovating their homes as a way to improve their living standards.
“As such it is not surprising that in the 12 months to September last year we saw more than 55,000 residential planning applications made in England with more than three quarters of them accepted.
“If you or your neighbours are thinking about starting a home makeover project, it is worth assessing and discussing the risk of damage to adjacent properties with neighbours.
“It is also crucial to check whether your home insurance policy covers damage caused by neighbour renovations, otherwise you could be left with a hefty repair bill.”
Damage to fencing was the most common ailment for victims of over exuberant home transformation projects, with two in five people (43 per cent) suffering damage.
A quarter of people (25 per cent) highlighted damage to windows and damage to garden features (fountains and sheds), making these the next most common casualties of neighbour renovations.