East of England

MEES 2031 exposure in Hertsmere

44 of the 67 industrial and warehouse buildings over 1,000 m² in Hertsmere with an EPC are rated C to E: 1.2m sq ft (114,852 m²) of floorspace that meets today's E minimum but falls short of the proposed EPC B standard.

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Hertsmere in figures

EPC register, snapshot 30 Sep 2026

Rated C to E: 1.2m sq ft114,852 m² in 44 buildings
Rated F or G: 0 buildingsNone below today's E minimum
Rated A+ to B: 23 buildingsAlready at the proposed standard
Share below B: 66%Of 67 buildings over 1,000 m². England and Wales: 70%

Hertsmere has the 225th most floorspace rated C to E of 316 local authorities in England and Wales, and the 31st most of 45 in the East of England.

EPC rating mix

Share of buildings over 1,000 m², by latest EPC rating

Hertsmere67 buildings
34%
66%
East of England4,217 buildings
33%
64%
England and Wales38,148 buildings
30%
67%

A+–BAt B or better alreadyC–EMeets today's E minimum, short of BF–GBelow today's E minimum

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 Hertsmere

Compared with the other 44 local authorities in the East of England and with England and Wales, from the same EPC register snapshot.

None of its buildings over 1,000 m² is rated F or G, as in 14 of the other 44 local authorities in the East of England.
Most of its floorspace rated C to E, 81% or 1.0m sq ft (93,236 m²), is in 41 buildings of 1,000 to 5,000 m².
29 of its 44 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; 22 have already lapsed.
8 of its 29 C-rated buildings (28%) have an asset rating of 51 to 60, within 10 points of band B: 332k sq ft (30,889 m²) of floorspace. Across England and Wales it's 37%.
Its storage and distribution buildings are likelier to meet B (41%) than its general industrial ones (22%).
Gas is the main heating fuel in 64% of its buildings, against 53% across England and Wales.
In the 12 months to 30 Sep 2026, 12 industrial and warehouse buildings of any size here had an EPC lodged to be let and 7 for a marketed sale, 19 in all: the 16th fewest of 45 local authorities in the East of England.
Two recommendations are joint most common on its certificates rated C to G, each on 26 of 44 buildings: “Carry out a pressure test, identify and treat identified air leakage. Enter result in EPC calculation” (EPC-E7) and “Consider replacing T8 lamps with retrofit T5 conversion kit” (EPC-L5).

Every rating, A+ to G

Hertsmere's 67 industrial and warehouse buildings over 1,000 m² by latest EPC rating, beside the East of England and the whole of England and Wales.

By latest EPC rating

Share is of buildings over 1,000 m² in each area.

Hertsmere: industrial and warehouse buildings over 1,000 m² by latest EPC rating, with the share in each band and East of England's and England and Wales's
Rating	Buildings	Floor area	Share	East of England	England and Wales
A+	1	21k sq ft1,905 m²	1%	2%	2%
A	7	382k sq ft35,446 m²	10%	12%	10%
B	15	503k sq ft46,701 m²	22%	20%	19%
C	29	850k sq ft79,002 m²	43%	35%	36%
D	12	270k sq ft25,083 m²	18%	22%	22%
E	3	116k sq ft10,767 m²	4%	8%	9%
F	0	0 sq ft0 m²	0%	1%	1%
G	0	0 sq ft0 m²	0%	1%	2%

Within 10 points of B

Rated C with an asset rating of 51 to 60. Band B ends at 50.

8 buildings

Of 29 rated C (28%), with 332k sq ft (30,889 m²) of floorspace. England and Wales: 37% of C-rated buildings.

By building size

Floor area as declared on the EPC.

Hertsmere: industrial and warehouse buildings by floor area
Floor area	Buildings	Rated B or better	C to E floor area
Over 1,000 to 5,000 m²	60	32%19 of 60	1.0m sq ft93,236 m²
Over 5,000 to 10,000 m²	6	50%3 of 6	233k sq ft21,616 m²
Over 10,000 m²	1	100%1 of 1	0 sq ft0 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.

Hertsmere: when each building's latest EPC lapses (estimated)
EPC lapses	All buildings	Rated C to G	C to G floor area
Already lapsed	22	22	622k sq ft57,749 m²
Rest of 2026	1	1	45k sq ft4,225 m²
In 2027	5	4	143k sq ft13,329 m²
In 2028	1	0	0 sq ft0 m²
In 2029	2	2	106k sq ft9,848 m²
In 2030	1	0	0 sq ft0 m²
2031 or later	35	15	320k sq ft29,701 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: 12buildings
Marketed sale: 7buildings
New build: 0buildings
Other reasons: 8buildings

27 in all: 44% 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.

Hertsmere: buildings over 1,000 m² by 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)	44	18	26	0	701k sq ft65,138 m²
General industrial (B2)	23	5	18	0	535k sq ft49,714 m²

By main heating fuel

As recorded on each building's latest EPC.

Hertsmere: buildings over 1,000 m² by main heating fuel on the EPC
Main heating fuel	Buildings	Share	England and Wales
Natural gas	43	64%	53%
Grid supplied electricity	24	36%	37%

What assessors recommend

The five most common on the latest certificates of its 44 buildings rated C to G, in the register's wording. A recommendation is the assessor's, not a requirement.

01
Carry out a pressure test, identify and treat identified air leakage. Enter result in EPC calculation.
EPC-E7. On 26 of 44 buildings (59%)
02
Consider replacing T8 lamps with retrofit T5 conversion kit.
EPC-L5. On 26 of 44 buildings (59%)
03
Introduce HF (high frequency) ballasts for fluorescent tubes: Reduced number of fittings required.
EPC-L7. On 25 of 44 buildings (57%)
04
Consider installing solar water heating.
EPC-R3. On 23 of 44 buildings (52%)
05
Some windows have high U-values - consider installing secondary glazing.
EPC-E5. On 21 of 44 buildings (48%)

How Hertsmere compares

Hertsmere has 0.1% of the industrial floorspace rated C to E in England and Wales. 66% of its buildings over 1,000 m² are below B, against 67% across the East of England and 70% nationally.

Against the region and the country

Hertsmere against the East of England and England and Wales: industrial and warehouse buildings over 1,000 m²
Area	Over 1,000 m²	Rated C to E	C to E floor area	Rated F or G	Share below B
Hertsmere	67	44	1.2m sq ft114,852 m²	0	66%
East of England	4,217	2,693	93.1m sq ft8,647,375 m²	120	67%
England and Wales	38,148	25,619	1.01bn sq ft94,020,657 m²	1,037	70%

Nearby in the East of England ranking

Local authorities ranked next to Hertsmere in the East of England by floorspace rated C to E
Rank	Local authority	C to E floor area
29	Stevenage	1.3m sq ft123,287 m²
30	Uttlesford	1.3m sq ft118,534 m²
31	Hertsmere	1.2m sq ft114,852 m²
32	South Norfolk	1.2m sq ft108,610 m²
33	Maldon	1.2m sq ft107,552 m²

East of England in detail All 316 local authorities

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
Hertsmere has 44 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
No building over 1,000 m² in Hertsmere has a latest EPC rated F or G.
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 English
Ratings change at renewal
29 of Hertsmere'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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