Energy performance certificate (EPC)


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27, Rowthorne Close
NORTHAMPTON
NN5 4WB

Energy rating

B

9 November 2025

9340-3800-7891-9495-8795

Property type
Detached house
Total floor area
88 square metres

Rules on letting this property

Properties can be let if they have an energy rating from A to E.

You can read guidance for landlords on the regulations and exemptions.

Energy rating and score

This property’s energy rating is B. It has the potential to be A.

See how to improve this property’s energy efficiency.

Energy efficiency chart This property’s energy rating is B with a score of 83. It has a potential energy rating of A with a score of 94. Properties get a rating from A to G and a score. Rating B is for a score of 81 to 91. The ratings and scores are as follows from best to worst. Rating A is for a score of 92 or more. Rating B is for a score of 81 to 91. Rating C is for a score of 69 to 80. Rating D is for a score of 55 to 68. Rating E is for a score of 39 to 54. Rating F is for a score of 21 to 38. Rating G is for a score of 1 to 20.

The graph shows this property’s current and potential energy rating.

Properties get a rating from A (best) to G (worst) and a score. The better the rating and score, the lower your energy bills are likely to be.

For properties in England and Wales:

  • the average energy rating is D
  • the average energy score is 60

Breakdown of property’s energy performance

Features in this property

Features get a rating from very good to very poor, based on how energy efficient they are. Ratings are not based on how well features work or their condition.

Assumed ratings are based on the property’s age and type. They are used for features the assessor could not inspect.

Feature Description Rating
Walls Average thermal transmittance 0.25 W/m²K Very good
Roof Average thermal transmittance 0.1 W/m²K Very good
Floor Average thermal transmittance 0.15 W/m²K Very good
Windows High performance glazing Very good
Main heating Boiler and radiators, mains gas Good
Main heating control Programmer, room thermostat and TRVs Good
Hot water From main system Good
Lighting Low energy lighting in all fixed outlets Very good
Air tightness Air permeability 4.9 m³/h.m² (as tested) Good
Secondary heating None N/A

Primary energy use

The primary energy use for this property per year is 94 kilowatt hours per square metre (kWh/m2).

About primary energy use

Primary energy use is a measure of the energy required for lighting, heating and hot water in a property. The calculation includes:

  • the efficiency of the property’s heating system
  • power station efficiency for electricity
  • the energy used to produce the fuel and deliver it to the property

How this affects your energy bills

An average household would need to spend £414 per year on heating, hot water and lighting in this property. These costs usually make up the majority of your energy bills.

You could save £34 per year if you complete the suggested steps for improving this property’s energy rating.

This is based on average costs in 2015 when this EPC was created. People living at the property may use different amounts of energy for heating, hot water and lighting.


Heating this property

Estimated energy needed in this property is:

  • 3,069 kWh per year for heating
  • 1,816 kWh per year for hot water

Impact on the environment

This property’s environmental impact rating is B. It has the potential to be A.

Properties get a rating from A (best) to G (worst) on how much carbon dioxide (CO2) they produce each year.

Carbon emissions

An average household produces
6 tonnes of CO2
This property produces
1.5 tonnes of CO2
This property’s potential production
0.3 tonnes of CO2

You could improve this property’s CO2 emissions by making the suggested changes. This will help to protect the environment.

These ratings are based on assumptions about average occupancy and energy use. People living at the property may use different amounts of energy.

Changes you could make

Do I need to follow these steps in order?

Yes. Each step builds on the one before it so you can save the most energy.

For example, it’s more energy efficient to insulate your home before you buy a new boiler. A well insulated home will lose less heat so you do not have to run your boiler as often.

Help paying for energy improvements

You might be able to get a grant from the Boiler Upgrade Scheme. This will help you buy a more efficient, low carbon heating system for this property.

More ways to save energy

Find ways to save energy in your home

Who to contact about this certificate

Contacting the assessor

If you’re unhappy about your property’s energy assessment or certificate, you can complain to the assessor who created it.

Assessor’s name
Dominique Stockford
Telephone
0845 8386 387

Contacting the accreditation scheme

If you’re still unhappy after contacting the assessor, you should contact the assessor’s accreditation scheme.

Accreditation scheme
Stroma Certification Ltd
Assessor’s ID
STRO006882
Telephone
0330 124 9660

About this assessment

Assessor’s declaration
No related party
Date of assessment
10 November 2015
Date of certificate
10 November 2015
Type of assessment
Show information about the SAP
SAP (Standard Assessment Procedure) is a method used to assess and compare the energy and environmental performance of properties in the UK. It uses detailed information about the property’s construction to calculate energy performance.

This type of assessment must be carried out on all new properties built after 1 April 2008 in England and Wales, and 30 September 2008 in Northern Ireland.

Other certificates for this property

If you are aware of previous certificates for this property and they are not listed here, please contact us at dluhc.digital-services@levellingup.gov.uk or call our helpdesk on 020 3829 0748 (Monday to Friday, 9am to 5pm).

There are no related certificates for this property.