What is the EPC C minimum 2027 deadline?

The UK government has consulted on raising the MEES floor for non-domestic rented properties from band E to band C, with new tenancies expected to need a band C minimum from April 2027 and all existing non-domestic leases from April 2030. The detail is still subject to legislation, but the direction has been clear in policy documents and consultations since 2019. Any commercial landlord with stock at D or below should be planning their retrofit programme now - surveys, design, procurement and works on a typical commercial building can easily run 12 to 18 months.

Which UK buildings need retrofit work for MEES compliance?

Any rented building below the relevant MEES band. For commercial property that is currently band F or G (already non-compliant) and from April 2027 will likely include band D and E. For domestic rented property that is band F or G today, with band C proposed across the rented sector by 2030. Owner-occupied homes are not directly subject to MEES, but they are subject to government net-zero retrofit ambitions and are the largest pool of potential retrofit work in the UK. The lookup on this page reports the share of unique properties at bands D, E, F or G in any postcode.

How is the EPC band calculated?

An accredited energy assessor surveys the property and feeds inputs - built form, fabric, glazing, heating system, hot water, ventilation, lighting and renewables - into government-approved software (RdSAP for existing dwellings, SAP for new builds, SBEM for non-domestic). The output is a SAP score from 1 to 100+, with band A at 92+, B at 81 to 91, C at 69 to 80, D at 55 to 68, E at 39 to 54, F at 21 to 38 and G below 21. The score reflects modelled energy cost per square metre under standard occupancy assumptions; it is not a direct measure of actual energy use.

What does it cost to upgrade an EPC band F to C?

There is no single number, but typical ranges from BEIS and industry data point to £15,000 to £30,000 per dwelling for a deep retrofit lifting a band F home to band C - fabric insulation, glazing, heating system replacement and ventilation. Lighter measures (LED lighting, controls, heating tweaks) can move a property up one or two bands for £2,000 to £5,000. On the commercial side, costs scale with floor area but the rule of thumb is £30 to £150 per square metre for fabric and services upgrades that move a building from D or E up to C. The lower end is realistic where lighting, controls and heating system efficiency are the main levers; the upper end assumes fabric work.

Where can I find buildings below EPC C in the UK?

The MHCLG “Get Energy Performance of Buildings” register publishes every domestic and non-domestic EPC issued in England and Wales since 2008. You can search by postcode at find-energy-certificate.service.gov.uk, or use the API for bulk access. The lookup at the top of this page wraps the API and reports the share of properties below band C - the headline number that determines where retrofit demand is concentrated. For Scotland the register is held by the Scottish EPC Register; for Northern Ireland it is at epbniregister.com.

What is the size of the UK retrofit market?

Estimates from the Climate Change Committee, BEIS and industry bodies put the cumulative spend needed to bring the UK building stock to net zero at between £250 billion and £450 billion to 2050, with the bulk concentrated in the next 15 years. Annual spend is currently running at around £6 billion to £10 billion; it would need to rise to £30 billion or more per year to meet the trajectory. Within that, the rented-sector slice driven by MEES is conservatively a £40 billion to £70 billion programme of works between now and 2030 across non-domestic and domestic stock combined.

Fabrick Analysis

Where is the UK retrofit market?

Every building below EPC band C is a candidate for retrofit work as MEES tightens - C minimum proposed for non-domestic rentals from April 2027. Below, a ranked view of UK cities by share of homes below band C, plus a postcode-level lookup further down the page.

The retrofit map

Of the 4,070 domestic certificates sampled across 32 UK cities

54%sit below band C

That is the size of the MEES-driven retrofit pipeline visible in this snapshot. Band D properties (currently MEES-compliant) come into scope when the proposed 2027 and 2030 thresholds bite.

Already compliant

46%

A, B or C

At-risk band D

38%

MEES 2027/2030

Non-compliant

16%

E, F or G

Sample of 8-12 residential postcodes per city, deduped by UPRN. MHCLG domestic register only - England and Wales. Non-domestic stock is not in this view. Snapshot dated 24 August 2026.

Where the work is

Highest retrofit demand

Cities with the largest share of homes below band C. The biggest local pipelines for MEES-driven upgrade work.

1
Swansea
85%
Wales · 94 certs
2
Plymouth
81%
South West · 21 certs
3
Nottingham
80%
East Midlands · 225 certs
4
Norwich
79%
East of England · 72 certs
5
Reading
79%
South East · 104 certs
6
Coventry
77%
West Midlands · 100 certs
7
Bristol
73%
South West · 124 certs
8
Portsmouth
71%
South East · 142 certs
9
Cardiff
70%
Wales · 124 certs
10
Sheffield
67%
Yorkshire · 87 certs

Smaller pipelines

Already-compliant stock

Cities with the most homes already at A, B or C. Smaller addressable retrofit market today, but D-band stock will still come into scope by 2030.

1
Milton Keynes
19%
South East · 52 certs
2
Southampton
20%
South East · 55 certs
3
Oxford
22%
South East · 161 certs
4
London (Outer)
22%
Greater London · 281 certs
5
Newcastle upon Tyne
36%
North East · 132 certs
6
Brighton & Hove
38%
South East · 358 certs
7
Bournemouth
40%
South West · 167 certs
8
York
43%
Yorkshire · 92 certs
9
Cambridge
46%
East of England · 104 certs
10
Derby
47%
East Midlands · 131 certs

All cities, ranked

32 UK cities. Click any column to re-sort. Default ranks highest retrofit demand first.


Swansea	Wales	94	15%	51%	34%	85%
Plymouth	South West	21	19%	67%	14%	81%
Nottingham	East Midlands	225	20%	48%	32%	80%
Norwich	East of England	72	21%	54%	25%	79%
Reading	South East	104	21%	43%	36%	79%
Coventry	West Midlands	100	23%	56%	21%	77%
Bristol	South West	124	27%	52%	20%	73%
Portsmouth	South East	142	29%	59%	12%	71%
Cardiff	Wales	124	30%	48%	23%	70%
Sheffield	Yorkshire	87	33%	48%	18%	67%
Bradford	Yorkshire	131	34%	42%	24%	66%
Stoke-on-Trent	West Midlands	63	35%	49%	16%	65%
Hull	Yorkshire	91	35%	33%	32%	65%
Wolverhampton	West Midlands	134	37%	46%	18%	63%
Bath	South West	103	38%	46%	17%	62%
Leicester	East Midlands	185	39%	47%	14%	61%
Leeds	Yorkshire	143	42%	48%	10%	58%
Preston	North West	82	43%	45%	12%	57%
Birmingham	West Midlands	145	44%	42%	14%	56%
Manchester	North West	71	45%	41%	14%	55%
Liverpool	North West	121	50%	36%	14%	50%
London (Inner)	Greater London	175	51%	37%	12%	49%
Derby	East Midlands	131	53%	32%	15%	47%
Cambridge	East of England	104	54%	30%	16%	46%
York	Yorkshire	92	57%	33%	11%	43%
Bournemouth	South West	167	60%	29%	11%	40%
Brighton & Hove	South East	358	62%	29%	8%	38%
Newcastle upon Tyne	North East	132	64%	23%	13%	36%
London (Outer)	Greater London	281	78%	17%	5%	22%
Oxford	South East	161	78%	16%	6%	22%
Southampton	South East	55	80%	16%	4%	20%
Milton Keynes	South East	52	81%	17%	2%	19%

Fabrick Analysis

MEES is the largest single demand signal in UK construction this decade

The Minimum Energy Efficiency Standards have been ratcheting upward since 2018. F and G non-domestic rentals were already non-compliant that year. Domestic F and G followed in April 2023. The proposed next step - band C minimum for non-domestic rented properties from April 2027 - would force every commercial landlord with stock at D or below to upgrade or take it off the rental market. Government ambition stretches that to a band C floor across the rented sector by 2030.

On the domestic side, roughly six in ten English homes still sit at band D or worse. The non-domestic register skews even lower. Each one is a candidate for fabric upgrades, glazing, heat-pump installation, controls, or a deeper retrofit. The leaderboard above is the local read on where that pipeline is concentrated today. Bigger percentages mean more work to win, not better-quality housing.

The size of the prize is in the tens of billions across the decade. Insulation manufacturers, glaziers, M&E firms, energy assessors, PAS 2035 retrofit coordinators and MEP contractors are all working in the same market - but most are still finding it on hunches. Postcode band data lets you target where the volume actually is.

Source: MHCLG “Get Energy Performance of Buildings” register, domestic certificates, England and Wales. The figure above is the share of unique properties (deduplicated by UPRN, latest certificate per property) at bands D, E, F or G.

Check a specific postcode

Drill into a single postcode

The leaderboard above is a snapshot of representative residential postcodes. To check a specific area, search any UK postcode below.

Postcode lookup

Find the retrofit pipeline in any UK postcode

We pull the latest domestic EPC certificates from the MHCLG register, dedupe to one record per property, and report the share below band C - the threshold MEES is moving to.

Data is from the MHCLG “Get Energy Performance of Buildings” domestic register - England and Wales only. Non-domestic stock is not currently included in this lookup. Certificates are valid for 10 years.

Frequently Asked

UK retrofit market, explained.

Plain-English answers for the contractors, manufacturers and specifiers chasing MEES-driven work.

MEES - the Minimum Energy Efficiency Standards - are the rules that set a minimum EPC band landlords must achieve before they can rent a property in England and Wales. They came in via the Energy Efficiency (Private Rented Property) (England and Wales) Regulations 2015 and have tightened over time. Since April 2018 it has been unlawful to grant a new lease on a non-domestic property rated F or G. Since April 2023 the same applies to existing non-domestic leases. Since April 2020 it has been unlawful to let a domestic property at F or G, with the same rule applied to existing tenancies from April 2023.

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Where is the UK retrofit market?

Highest retrofit demand

Already-compliant stock

All cities, ranked

MEES is the largest single demand signal in UK construction this decade

Drill into a single postcode

Find the retrofit pipeline in any UK postcode

UK retrofit market, explained.

What is MEES?

What is the EPC C minimum 2027 deadline?

Which UK buildings need retrofit work for MEES compliance?

How is the EPC band calculated?

What does it cost to upgrade an EPC band F to C?

Where can I find buildings below EPC C in the UK?

What is the size of the UK retrofit market?

Explore more data

Carbon Intensity

Material Prices

Construction Output

Planning Activity

Want a platform like this for your business?