Wales
MEES 2031 exposure in Gwynedd
32 of the 41 industrial and warehouse buildings over 1,000 m² in Gwynedd with an EPC are rated C to E: 783k sq ft (72,772 m²) of floorspace that meets today's E minimum but falls short of the proposed EPC B standard.
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Gwynedd in figures
EPC register, snapshot 30 Sep 2026
- Rated C to E
- 783k sq ft72,772 m² in 32 buildings
- Rated F or G
- 3 buildings43k sq ft (4,020 m²), below today's E minimum
- Rated A+ to B
- 6 buildingsAlready at the proposed standard
- Share below B
- 85%Of 41 buildings over 1,000 m². England and Wales: 70%
Gwynedd has the 269th most floorspace rated C to E of 316 local authorities in England and Wales, and the 18th most of 22 in Wales.
EPC rating mix
Share of buildings over 1,000 m², by latest EPC rating
- Gwynedd41 buildings15%78%
- Wales1,738 buildings22%75%
- England and Wales38,148 buildings30%67%
Latest certificate per building from the government's EPC register, snapshot 30 Sep 2026. Industrial and warehouse uses (B2 and B8), floor area over 1,000 m² as declared on the EPC; 1 m² is 10.7639 sq ft. How we count it
What stands out in Gwynedd
Compared with the other 21 local authorities in Wales and with England and Wales, from the same EPC register snapshot.
- Its share of buildings rated F or G (7%) is the 3rd highest of 22 local authorities in Wales.
- Most of its floorspace rated C to E, 71% or 556k sq ft (51,643 m²), is in 29 buildings of 1,000 to 5,000 m².
- 23 of its 35 buildings rated C to G (66%) have an EPC that has lapsed or is estimated to lapse before 2031, against 54% across England and Wales; 11 have already lapsed.
- 6 of its 18 C-rated buildings (33%) have an asset rating of 51 to 60, within 10 points of band B: 205k sq ft (19,003 m²) of floorspace. Across England and Wales it's 37%.
- General industrial (B2) makes up 59% of its buildings over 1,000 m², against 42% across England and Wales.
- 15% of its buildings are heated mainly by oil, LPG or biomass, against 6% across England and Wales.
- In the 12 months to 30 Sep 2026, 6 industrial and warehouse buildings of any size here had an EPC lodged to be let and 4 for a marketed sale, 10 in all: the 6th fewest of 22 local authorities in Wales.
- Two recommendations are joint most common on its certificates rated C to G, each on 26 of 35 buildings: “Add optimum start/stop to the heating system” (EPC-H7) and “Consider installing building mounted wind turbine(s)” (EPC-R2).
Every rating, A+ to G
Gwynedd's 41 industrial and warehouse buildings over 1,000 m² by latest EPC rating, beside Wales and the whole of England and Wales.
By latest EPC rating
Share is of buildings over 1,000 m² in each area.
| Rating | Buildings | Floor area | Share | Wales | England and Wales |
|---|---|---|---|---|---|
| A+ | 0 | 0 sq ft0 m² | 0% | 1% | 2% |
| A | 0 | 0 sq ft0 m² | 0% | 5% | 10% |
| B | 6 | 157k sq ft14,605 m² | 15% | 17% | 19% |
| C | 18 | 526k sq ft48,890 m² | 44% | 40% | 36% |
| D | 11 | 203k sq ft18,899 m² | 27% | 26% | 22% |
| E | 3 | 54k sq ft4,983 m² | 7% | 9% | 9% |
| F | 1 | 17k sq ft1,608 m² | 2% | 1% | 1% |
| G | 2 | 26k sq ft2,412 m² | 5% | 2% | 2% |
Within 10 points of B
Rated C with an asset rating of 51 to 60. Band B ends at 50.
6 buildings
Of 18 rated C (33%), with 205k sq ft (19,003 m²) of floorspace. England and Wales: 37% of C-rated buildings.
By building size
Floor area as declared on the EPC.
| Floor area | Buildings | Rated B or better | C to E floor area |
|---|---|---|---|
| Over 1,000 to 5,000 m² | 38 | 16%6 of 38 | 556k sq ft51,643 m² |
| Over 5,000 to 10,000 m² | 2 | 0%0 of 2 | 111k sq ft10,286 m² |
| Over 10,000 m² | 1 | 0%0 of 1 | 117k sq ft10,843 m² |
Certificates and lettings
An EPC lasts 10 years, and a valid one is needed to let or sell. We estimate expiry as the lodgement date plus 10 years.
When the certificates lapse
Buildings over 1,000 m², by when their latest EPC lapses, at 30 Sep 2026.
| EPC lapses | All buildings | Rated C to G | C to G floor area |
|---|---|---|---|
| Already lapsed | 12 | 11 | 289k sq ft26,894 m² |
| Rest of 2026 | 0 | 0 | 0 sq ft0 m² |
| In 2027 | 3 | 3 | 78k sq ft7,240 m² |
| In 2028 | 6 | 5 | 171k sq ft15,853 m² |
| In 2029 | 1 | 1 | 30k sq ft2,757 m² |
| In 2030 | 3 | 3 | 57k sq ft5,330 m² |
| 2031 or later | 16 | 12 | 201k sq ft18,718 m² |
New EPCs in the last year
Industrial and warehouse buildings of any size whose latest EPC was lodged in the 12 months to 30 Sep 2026, by the reason on the certificate.
- To let
- 6buildings
- Marketed sale
- 4buildings
- New build
- 0buildings
- Other reasons
- 1building
11 in all: 55% to let, against 56% across England and Wales. How the daily feed works
Uses, heating and recommendations
What the buildings are used for, how they're heated, and what assessors recommended on the certificates of those rated C to G.
By use
Use from the EPC's property type.
| Use | Buildings | B or better | C to E | F or G | C to E floor area |
|---|---|---|---|---|---|
| Storage and distribution (B8) | 17 | 4 | 12 | 1 | 352k sq ft32,689 m² |
| General industrial (B2) | 24 | 2 | 20 | 2 | 431k sq ft40,083 m² |
By main heating fuel
As recorded on each building's latest EPC.
| Main heating fuel | Buildings | Share | England and Wales |
|---|---|---|---|
| Natural gas | 18 | 44% | 53% |
| Grid supplied electricity | 13 | 32% | 37% |
| Oil | 5 | 12% | 4% |
| Other | 4 | 10% | 4% |
| Biomass | 1 | 2% | 1% |
What assessors recommend
The five most common on the latest certificates of its 35 buildings rated C to G, in the register's wording. A recommendation is the assessor's, not a requirement.
- 01
Add optimum start/stop to the heating system.
EPC-H7. On 26 of 35 buildings (74%)
- 02
Consider installing building mounted wind turbine(s).
EPC-R2. On 26 of 35 buildings (74%)
- 03
Consider replacing T8 lamps with retrofit T5 conversion kit.
EPC-L5. On 24 of 35 buildings (69%)
- 04
Consider installing solar water heating.
EPC-R3. On 24 of 35 buildings (69%)
- 05
Introduce HF (high frequency) ballasts for fluorescent tubes: Reduced number of fittings required.
EPC-L7. On 21 of 35 buildings (60%)
How Gwynedd compares
Gwynedd has less than 0.1% of the industrial floorspace rated C to E in England and Wales. 85% of its buildings over 1,000 m² are below B, against 78% across Wales and 70% nationally.
Against the region and the country
| Area | Over 1,000 m² | Rated C to E | C to E floor area | Rated F or G | Share below B |
|---|---|---|---|---|---|
| Gwynedd | 41 | 32 | 783k sq ft72,772 m² | 3 | 85% |
| Wales | 1,738 | 1,295 | 55.9m sq ft5,191,184 m² | 54 | 78% |
| England and Wales | 38,148 | 25,619 | 1.01bn sq ft94,020,657 m² | 1,037 | 70% |
Nearby in the Wales ranking
| Rank | Local authority | C to E floor area |
|---|---|---|
| 16 | Vale of Glamorgan | 1.5m sq ft139,280 m² |
| 17 | Denbighshire | 915k sq ft85,039 m² |
| 18 | Gwynedd | 783k sq ft72,772 m² |
| 19 | Isle of Anglesey | 583k sq ft54,145 m² |
| 20 | Conwy | 574k sq ft53,370 m² |
What the 2031 proposal means
In June 2026 the government said it intends that privately rented non-domestic buildings over 1,000 m² reach EPC B from 2031, where cost effective. It needs secondary legislation, so for now it's a proposal, not law. What the proposal means
C to E: fine today, short of B
Gwynedd has 32 buildings over 1,000 m² rated C to E. They meet today's E minimum, but would fall short of B if the proposal becomes law while they're let.F or G: below the minimum already
3 buildings in Gwynedd are rated F or G. If let, they already need an improvement or a registered exemption under today's rules.Where cost effective, and only when let
The 7-year payback test and the exemptions remain. Owner-occupied buildings are counted too, as an EPC can't say whether a building is let. Local weights and measures authorities enforce the rules. MEES in plain EnglishRatings change at renewal
23 of Gwynedd's buildings rated C to G have an EPC that has lapsed or is estimated to lapse before 2031. Each needs a new certificate before it's let or sold, and the new rating may differ.
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