In this regard, green leases are seen as a progressive step forward for sustainable development. In the large and others, it is the leases that contain specific provisions for the sustainable exploitation of a property. This may include action measures; Energy efficiency, waste prevention, waste management, water efficiency, etc., as well as social and ethical issues. As a general rule, they are used for leases for commercial or public buildings, new or existing, and may include obligations for both the lessor and the tenant. However, there are several advantages to the evolution in accordance with the green lease. These include reducing energy efficiency and water consumption costs, as well as designing an internal environment for health and well-being. This not only benefits residents, but also results in increased productivity in an office building or an increase in retail sales. Green rentals were first created in Australia, where they have been used since 2006 for public and occupied buildings. A “green lease” is a tenancy agreement that contains provisions relating to the specific responsibilities of the landlord and tenant with respect to the sustainable operation of the property.

These often address issues such as material specification or energy efficiency and water efficiency, but may take into account the maintenance and operation of the building. There are many shades of green leasing ranging from light green to dark green: Cardiff University`s Green Leases Building Management website provides more information on green rentals in the UK and around the world. In 2009, Cardiff University`s Centre for Research in the Built Environment (CRiBE) Greening the commercial property sector: A guide for developing and implementing best practice through the UK leasing process published examples of “green” clauses that could be included in leasing contracts. For example, a darker green bond could be: “The lessor will provide the tenant with a set of environmental information prior to the conclusion of the lease and will update it annually within one month of the end of the year of the service charge.” “A formal contractual agreement between a developer or landlord and its tenants. As such, a green-shaping agreement (or “green” clauses or sections in a lease agreement) can be used as evidence of compliance with the relevant BREEAM emission criteria in the interim planning and the final follow-up phase of the evaluation. The agreement should focus specifically on the requirements or stages of specifications claimed, as defined by BREEAM in this technical manual in which credits are allocated. BREEAM aims to promote a mutually beneficial relationship between the large project and the principal developer or owner of a building and its future tenants, so that the fully equipped operating building achieves a performance against the highest environmental standards. To do this, BREEAM encourages and rewards the application of formal green-out fitness agreements between a developer or owner and his or her tenant. If a legally binding green-fit-out agreement is provided as evidence and commits the tenant to meet the criteria of this BREEAM issue, loans may be granted. The Better Buildings (BBP) partnership was one of the first to help with its green lease toolbox.

The new version of BREEAM in 2014 eliminated the need for a green rental, although tenants of older buildings still face green clauses in older sustainable development assessments.