BS 3632

All our granny annexes are built to exceed the industry benchmark for all-year round use; BS 3632 (British Standard) unless you specifically ask us to build to EN 1647 for seasonal use.

At BS 3632 they are designed to be used all year round, site licence permitting. In a leisure context, that can extend the number of weeks you can hire your unit out, offering an extra level of insulation to ensure you are wonderfully warm throughout the colder months.