Energy
Minimum energy efficiency standard (MEES)
The rule that privately rented property in England and Wales must reach at least EPC band E, so F and G stock cannot legally be let without a registered exemption.
Also called: MEES, EPC E minimum, unlettable EPC F G.
Definition
Minimum energy efficiency standard, as the data uses it
Since 2020 the minimum energy efficiency standard has applied to all domestic private tenancies in England and Wales: a property rated F or G cannot be let unless an exemption is registered, and a landlord letting one faces a penalty. The standard is expected to tighten further this decade.
MarketCode flags F and G stock in three places: the energy profile of an area, the retrofit candidates ranking and the site dossier, where a signal named mees_unlettable fires with the band as evidence. For a lender it is a collateral question; for a sourcing team it is a motivated-seller signal.
Tools
Tools that return it
Retrofit candidates in an area
retrofit_candidates()Properties in an area with the most improvement headroom, ranked by potential efficiency. Defaults to the sub-standard bands E, F and G.
Energy profile of an area
energy_profile()Energy composition of an area: EPC band mix, mains gas / electric / oil split, heat-pump penetration.
Site appraisal dossier
site_appraisal()Everything known about ONE site, assembled and judged — the site dossier.
See also
Related terms
- EPC rating: The A to G energy efficiency band on an Energy Performance Certificate, lodged when a property is built, sold or let; MarketCode returns the full history of certificates, not just the latest.
- Retrofit gap: The difference between a property's current EPC score and the potential score its certificate says the recommended work would reach.
FAQ
Questions about minimum energy efficiency standard
What does Minimum energy efficiency standard mean?
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The rule that privately rented property in England and Wales must reach at least EPC band E, so F and G stock cannot legally be let without a registered exemption.
Which MarketCode tools return minimum energy efficiency standard?
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Retrofit candidates in an area, Energy profile of an area, Site appraisal dossier. Each runs as an MCP tool in Claude, ChatGPT, Codex and Cursor and as a REST endpoint with an API key, at the same price.
Is EPC E minimum the same thing?
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Yes. MEES, EPC E minimum, unlettable EPC F G are other names for what this entry defines; MarketCode uses "Minimum energy efficiency standard" in its tool descriptions and responses.
See it on a real address.
Thirty minutes, your property or area, every figure sourced.