How are flats above shops assessed for an EPC?
The flat and the commercial unit are assessed separately, under different methods, on different certificates. The boundary between them counts as a heat-loss surface for the flat where the space below is unheated. Central Warwick has a great deal of this stock.
- The flat gets a domestic EPC; the shop gets an SBEM commercial one.
- An unheated commercial unit below behaves as an external surface.
- Assuming one certificate covers both is a common completion delay.
- Access to both parts is usually needed on the day.
Two dwellings, two methods, two certificates
A building containing a shop at ground floor and a flat above is, for EPC purposes, two separate things. The retail unit is assessed with SBEM and gets a commercial certificate. The flat is assessed with RdSAP and gets a domestic one. There is no single certificate that covers both.
This catches people out at the worst possible moment. It is commonly discovered during conveyancing, at which point the missing assessment has to be arranged in a hurry against an exchange date.
Why it matters in Warwick
The town centre and Barford carry a great deal of this stock — Victorian and post-war buildings with commercial use at street level and residential above, along Church Street, High Street, Sheep Street and Regent Street. If you are buying, selling or letting any of it, assume two certificates until proven otherwise.
The boundary is a heat-loss surface
For the flat, the floor over the shop is treated according to what is below it. Where the commercial unit is unheated — a lock-up, a store, an empty unit — that floor behaves as an external surface and loses heat accordingly. Where the space below is heated, it does not. The same logic applies to unheated stairwells and passages beside the flat.
That single distinction can move a flat's rating materially, and it is one of the things most often recorded wrongly by an assessor unfamiliar with mixed use.
Access on the day
- Both parts usually need to be seen, ideally in one visit
- The commercial assessment needs plans, plant details and lighting specification
- The domestic assessment needs the usual insulation and boiler evidence
- Separate ownership or tenancy makes arranging access the long pole — start early
MEES applies to both, separately
The flat is subject to the residential minimum; the shop to the commercial one, which has covered continuing leases since April 2023. A compliant flat above a non-compliant shop is a perfectly possible and perfectly awkward position. Our MEES consultancy handles both.
Book both at once
See our Commercial EPC and Domestic EPC services, or send us the building details for a combined quote.
Looking for your own area? We have local EPC guides for Warwick city centre, Barford, Saltisford, Woodloes Park, Hampton Magna, Emscote, Wolverton and every other Warwick area.
