Version 1.8 of the Model Commercial Lease was launched on 4 April 2025.  To assist users in identifying the changes made in the new versions of the documents, we have prepared a detailed list of the changes and a red-line version of the lease of an office in part of a building (MCL-OFFICE-02) that you can download from the following links.

This version of the MCL includes a number of changes based on the latest edition of the Better Buildings Partnership Green Lease Toolkit. A separate guidance note available below sets out the approach that we have taken in relation to the new provisions.

Guidance notes for version 1.8

Inclusion of Green Lease Toolkit provisions

Redline office lease of part