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A Cornish granite cottage exterior under clear daylight, suitable for an energy assessment

Energy Performance Certificates · Rock, Cornwall

EPC Rock

Selling or letting in Rock? Get a quote for a domestic EPC from an Elmhurst-accredited Domestic Energy Assessor.

On the booking page, choose Residential, then Domestic EPC.

EPC ratings in Rock

Local median score
62 Band D
Band C or above
41% of homes with an EPC
North Cornwall (constituency)
68 Band D
England
69 Band C

A typical Rock home with an EPC scores 62, in band D; 41% manage C or above. That is the ONS median for Cornwall 007.

England's median is 69. Rock: 62. North Cornwall: 68. New-build homes here score a median 84, against 52 for existing homes.

Homes in Rock without a certificate from April 2015 to March 2025 are not in these numbers.

Why Rock homes score as they do

Age of the housing

VOA records show 14% of Rock homes were built before 1919, while 31% are from 2000 onwards. In the North Cornwall constituency the oldest homes (pre-1929) score a median 49; the newest (2012 on) score 84.

Heating: largely off mains gas

Of Rock's 561 households, 8% relied on mains gas alone in the 2021 Census. Other single fuels: electricity 31%, oil 29%, bottled or tank gas (LPG) 6%, renewables such as heat pumps 6%. 16% combined more than one, and 3% had no central heating. Oil, LPG and storage heaters cost more to run in the EPC model, which pulls scores down.

Type of home

Rock is 55% detached, 25% semi-detached, 10% terraced, 8% flats by Census 2021 count. Caravans and mobile homes make up 1%. Nationally, detached homes have a median EPC score of 68 (ONS).

Protected buildings in Rock

Historic England lists 15 buildings in and around Rock. Windows, wall insulation and solar panels may need consent on these homes.

What Rock is built on

Rock sits mainly on mudstone, siltstone and sandstone (BGS). Older houses built of local stone usually have solid walls, which the assessor records as uninsulated unless there is evidence otherwise.

Renting out in Rock

In Rock, private renters are 18% of households (103 in 2021), alongside 61% owners and 20% social tenants. From 1 October 2030 that rises to C, a level 48% of certificated homes across the North Cornwall constituency reach now.

Read more about minimum EPC rules for landlords.

EPC questions in Rock

Do I need an EPC to sell a house in Rock?

Yes, before the home is marketed. Request a quote online through Survey Booker, or call us.

What EPC rating does a Rock rental need?

At least band E now (or a registered exemption) and C from 1 October 2030. That affects about 103 Rock households.

When does an EPC expire?

After ten years. You can look up an existing Rock certificate free on GOV.UK.

Is Rock better or worse than average for EPCs?

7 points below the England median: 62 against 69.

Is a listed building in Rock exempt from needing an EPC?

Only if meeting minimum energy requirements would unacceptably alter its character or appearance. Ask the local authority's conservation officer. Rock has 15 listed buildings.

Buying in Rock?

An EPC rates energy efficiency, not condition. See surveyors in Rock.

Nearby EPC pages

All North Cornwall constituency EPC pages · All Cornwall EPC pages

Sources

ONS median EPC score, Mar 2025 · ONS EPC band C+, Mar 2025 · Census 2021 (Nomis) · VOA CTSOP 2025 · Historic England · BGS 625k · GOV.UK MEES guidance · GOV.UK response, Jan 2026