Manchester has the highest share of houses with an Energy Performance Certificate ever lodged against them of any borough in Greater Manchester — and, at the same time, the lowest share of flats. Birmingham does exactly the same thing inside the West Midlands: highest house coverage, lowest flat coverage, in one city. Leeds, tested third in West Yorkshire, only half-matches the pattern — and the borough that actually has the lowest flat coverage there isn't Leeds at all.
What "coverage" actually measures
An Energy Performance Certificate isn't a standing requirement that renews itself, like an MOT. It's generated once, when a home is sold, let under a new tenancy, or newly built — and the record then sits on file, current or not. "Coverage" means the share of residential addresses that have ever had at least one certificate lodged. A low figure is mostly a sign that a type of home doesn't change hands or get re-let very often in that area; it isn't a sign the homes are inefficient, and it says nothing about condition.
Three previous Homecost pieces tested this borough by borough across Greater Manchester, the West Midlands and West Yorkshire, cross-referencing EPC register data against HM Land Registry property types. Put side by side, they show the same basic shape — tight, stable house coverage next to wide, volatile flat coverage — but only two of the three conurbations show one city driving both extremes at once.
Three conurbations, one test
| Conurbation (boroughs) | Highest house coverage | Lowest flat coverage | Same borough? |
|---|---|---|---|
| Greater Manchester (10) | Manchester — 78.5% | Manchester — 10.2% | Yes |
| West Midlands (6) | Birmingham — 76.2% | Birmingham — 20.9% | Yes |
| West Yorkshire (5) | Leeds — 76.7% | Calderdale — 22.3% | No — Leeds itself is third-lowest at 34.9% |
Figures fetched 8–19 October 2026, from the three underlying borough-level pieces (linked below).
The house-coverage bands are strikingly narrow everywhere: 71.9%–78.5% across Greater Manchester's ten boroughs (a 6.6 percentage-point spread), 72.9%–76.2% across the West Midlands' six (3.3 points), and 72.4%–76.7% across West Yorkshire's five (4.3 points). Flat coverage moves far more: 10.2%–50.4% in Greater Manchester (40.2 points), 20.9%–66.2% in the West Midlands (45.3 points), and 22.3%–52.5% in West Yorkshire (30.2 points — the narrowest flat-coverage range of the three, though still roughly seven times wider than that conurbation's own house-coverage range).
Where the mirror holds: Manchester and Birmingham
Manchester has the highest house coverage of any Greater Manchester borough (78.5% of 83,349 house addresses) and the lowest flat coverage of any of the ten (10.2% of 45,179 flat addresses) — a 68.3 percentage-point internal gap. Birmingham repeats the shape almost exactly: highest house coverage in its six-borough group (76.2% of 198,336) and lowest flat coverage (20.9% of 47,055), a 55.3-point gap.
Both cities carry a large stock of city-centre and waterside apartment schemes — Manchester city centre and Salford Quays in Greater Manchester, Edgbaston and the Jewellery Quarter fringe in Birmingham — where a big share of units were completed and sold in a single registration wave years ago and simply haven't resold or been re-let since. Their house stock, by contrast, is large, long-established and turns over at a broadly ordinary regional rate, which is enough to keep house coverage near the top of each group.
Where it breaks: Leeds and Calderdale
Leeds does hold the highest house coverage of West Yorkshire's five boroughs, at 76.7%. But its flat coverage, 34.9%, is only the third-lowest of the five — well above Calderdale's 22.3% and Bradford's 26.2%. The "one city drives both extremes" pattern that held twice doesn't hold a third time.
Calderdale's flat stock is small — 4,981 addresses against Leeds's 29,872 — and weighted toward older mill-town conversions around Halifax and the upper Calder Valley rather than the large-scale city-centre apartment blocks that dominate Leeds, Manchester and Birmingham. Leeds's bigger, more active city-centre flat market keeps generating fresh certificates as new blocks complete and existing flats resell; Calderdale's smaller, older flat stock appears to change hands far less often.
Price is a weak and inconsistent guide
In the West Midlands, flat coverage and flat price showed a moderate negative relationship across the six boroughs (Pearson r = −0.665) — cheaper flat markets there tended to have somewhat better coverage. West Yorkshire showed a similar but weaker relationship across its five boroughs (r = −0.61). Neither is a clean rule: Solihull had the West Midlands' priciest flats yet sat mid-table on coverage, not at the bottom, and Leeds had West Yorkshire's priciest flats with only middling coverage, while Calderdale's flats — the second most expensive of the five — had the lowest coverage.
Greater Manchester's equivalent correlation hasn't been calculated on this ten-borough basis, but the clearest demonstration that price alone doesn't drive coverage sits in the national comparison behind these pieces: Manchester's 10.2% flat coverage sits almost level with Kensington and Chelsea's 9.4%, despite a 2025 median flat price gap of £220,000 versus £955,000 (HM Land Registry, 2025). If price set coverage, those two markets wouldn't be anywhere near each other.
What this means if you're buying a flat
A flat with no EPC on record isn't unusual in Manchester, Birmingham, Calderdale or Bradford's flat markets specifically — in each, it's closer to the norm than the exception, and it reflects how rarely that flat has changed hands rather than anything about its condition. Sellers are legally required to provide a valid certificate before marketing a home, so one will exist by completion even where none shows up in historical records yet; you can check whether a certificate already exists for a specific address using the government's own register before assuming one will need to be commissioned. Houses are a more consistent story everywhere tested so far — coverage sits within a tight single-digit band in every conurbation, so a house with no certificate at all is the more unusual case, wherever you're looking.
Based on EPC and Land Registry records for over 1.9 million residential addresses across the three conurbations, part of the wider dataset behind every Homecost guide. See how this plays out for a specific street: try M1 1AE in Manchester city centre, B16 8AE in Birmingham's Edgbaston, or BD1 2AA in Bradford city centre on the Homecost property tool.