National calculation methodology

This document is only available with a paid isurv subscription.

SBEM has been developed by the Building Research Establishment (BRE) on behalf of the Ministry for Housing, Communities and Local Government (MHCLG) and forms the key element of the NCM. The SBEM is defined by a calculation method (a set of equations and algorithms) and the databases of construction and...

Explore the subscription options here to get full access to isurv, including downloads.

Try isurv for free!

You can get instant access to a free, 7-day trial of isurv simply by filling in the free trial form. Please note that the free trial includes full access to isurv with the exception of downloadable content which is only available with a paid subscription.

Sign up for the isurv newsletter, to receive a monthly round-up of the latest isurv updates.

For further questions, don't hesitate to call: +44(0)247 686 8555.