As of April 1, 2023, the Minimum Energy Efficiency Standards (MEES) legislation in the UK will extend to all commercial properties that are let. This means that all commercial properties must have an Energy Performance Certificate (EPC) rating of at least "E" before they can be rented out. This deadline could potentially affect SIPP and SSAS holders who own commercial properties that do not meet the minimum energy efficiency standards. They will need to upgrade their properties to comply with the legislation before April 2023 or face fines or penalties for non-compliance. Furthermore, The properties may be less attractive to renters if they don't meet the minimum standards of E rating. It's important for these holders to assess the energy efficiency of their commercial properties and make any necessary improvements before the April 2023 deadline to avoid any penalties and maintain the attractiveness of the properties to renters.