Who else requires Contract Works and Liability Insurance?

Who requires Contract Works cover?

Builders are not the only people who require contract works insurance.  There are many different types of businesses or individuals that will buy a construction policy for many different reasons depending upon their circumstance.

These include but are not limited to:

Anyone who is building, erecting or installing something may have a requirement for contract works insurance.

What are the reasons why someone other than a builder/contractor would arrange construction insurance?