--- title: "Commercial Lease: Alterations (improve environmental performance)" date: 2024-03-27T14:15:44Z modified: 2025-07-23T11:11:13Z permalink: "https://chancerylaneproject.org/clauses/commercial-lease-alterations-improve-environmental-performance/" type: clause status: publish excerpt: "" wpid: 1997 jurisdiction: - England & Wales maintenance-status: - Not maintained practice-area: - Real estate and property sector: - Real estate clause_child_name: "Rosie's Clause" clause_summary: "

This clause requires landlords to act reasonably when tenants propose alterations to their premises (and associated changes of use) or improvements to common areas, which have a positive climate impact. 

" clause_last_updated_date: 2022-06-18 related_clauses: false --- Rosie’s Clause This clause requires landlords to act reasonably when tenants propose alterations to their premises (and associated changes of use) or improvements to common areas, which have a positive climate impact. Helps tenants carry out environmental improvements knowing that landlords need to act reasonably in allowing these. The clause also encourages more efficient use of land and buildings and more collaboration between landlords and tenants to achieve climate goals. _\[Drafting note: capitalised terms relate to either a defined term in this clause or a defined term in the main agreement that this clause is designed to be inserted into.\]_ **For Tenant’s Alterations covenant** The Tenant may, with the Landlord’s consent, which is not to be unreasonably withheld or delayed, carry out \[structural and\] non-structural works to the Premises \[or to unbuilt parts of the Estate\] which \[the Tenant can demonstrate by the provision of an \[energy efficiency report/ ecology report/ other report\]\] will improve the Environmental Performance of the Premises, Building or Estate. The Landlord can refuse consent to any proposed works which in the Landlord’s reasonable opinion would have a detrimental impact on the investment value of the Landlord’s reversionary interest in the Premises, Building or Estate. **For Tenant’s Yielding Up covenant** By the End Date the Tenant must have removed \[_INSERT DETAILS_\] save that the Tenant shall not be required to remove any Environmental Improvements \[unless the Landlord has given the Tenant at least \[●\] months’ notice that it requires the Tenant to remove all or part of any Environmental Improvements on the basis that those works remaining after the End Date would have a detrimental impact on the investment value of the Landlord’s reversionary interest in the Premises, Building or Estate\].