Coventry Sap Calculations

Low price experienced Sap Assessors. We will give totally free information for your project. Why not call us for your quote on your project.

Get QuoteCLICK TO CALL FREE: 0800 046 7345
Air tightness testing
Water calculations

What Exactly Are Sap Calculations?

Have building control or perhaps your architect asked you to get sap calculations in Coventry. But why will you need them and precisely what are sap calculations anyway? Then continue reading.

You can either click the video recording on this page, where Andreas will shed some light on this, or read on.



Coventry SAP Calcs For Dwelling Change Of Use

  • Reports for Part L1B Compliance
  • Free Advice

Coventry SAP Calcs For Overglazed Extensions

  • Carbon Emissions Reports
  • Heat Loss Calculations
  • Free Advice

Coventry SAP Calcs For New Builds

  • Reports for Part L1A compliance
  • Free Advice

What does SAP mean?

SAP is short for Standard Assessment Procedure and its the UK government’s means of determining the energy efficiency of properties. Sap calculations are necessary to illustrate that a building conforms with specific energy targets laid down within the building regulations.

That’s pretty much it in a quick overview.


When Are SAP Calculations Needed?

Sap calculations usually are required for three main reasons

1. For all newly built properties
2. For a dwelling that’s changed its use, e.g converting a commercial building to domestic flats.
3. For extensions that have over 20% glazing

There are two main targets that the sap calculations are required to demonstrate. Firstly that the dwelling emission rate (DER) and the dwelling fabric energy efficiency (DFEE) comply with certain targets.

The calculations are carried out by a certified and accredited On Construction Domestic Energy Assessor. There is not any need to visit the property as all of the calculations are carried out from the building plans . An EPC or Energy Performance Certificate can be produced once the calculations are completed.

If the sap calculations show that your property is not compliant, your Assessor will give you information on improvements which can be made to make it so. It’s important to liaise with the Assessor as early on in the project as possible because when the building is finished any non-compliances could possibly be quite costly to rectify.

Should you need guidance on a project you could have in , or simply require a quotation, contact us or fill in our get a quote form. We’re here to help.


SAP Calculations in Coventry The 10 Most Frequent Questions Asked.

What Exactly Are Sap Calculations?

This is certainly quite possibly the most frequent question asked. Check out Andrea’s video explanation above, or read the full explanation here on the right.

Sap Calculations, How Much Are They

This will vary considerably dependant upon the measurements and complication of the dwelling, but a standard cost range will be between £120 – £300. There may be an extra charge of around £50 if an EPC is called for at the end of the construction. For a number of dwellings of comparable types, then discounts would be available.

What Is The Difference Between Sap and EPC

Before we explain the difference, here is what you will need depending on your project.

For a new build property you’ll need – SAP calculations and an EPC.

For dwelling change of use or conversion you’ll need – Sap Calculations and an EPC.

For overglazing on an existing dwelling you’ll – Sap calculations only.

SAP or Standard Assessment Procedure are the calculations of pre defined data set of a buildings design that’s put together to demonstrate the energy performance of a building. EPC is short for Energy Performance Certificate and it’s a summary report of the SAP calculations in an simple to grasp report, that could also be used to market or rent a property.

There are actually 2 types of EPCs. The first is a SAP EPC that is produced from building plans where all of the components of the building are known. This will normally be needed by building control to show that the property satisfies specific targets required by the building regulations. Building control would must also see the SAP calculations which shows in greater detail whether all the elements going into your property conform to the building regulations.

The second form of EPC is the common one that would be required for anybody who is selling, or renting a property. This kind of EPC uses what’s called rdSAP, which is short for Reduced Data Standard Assessment Procedure, and is used where particular thermal values of, such as, the walls, roof, floors, etc, are not precisely known on an existing property. In this instance assumed thermal values are used according to the age of your property. This sort of EPC will be no good to show compliance with any building regulations. Sometimes building control would simply ask you for the EPC, but what they would really require are the Sap calculations (which is the information behind the EPC) and the SAP EPC (which is actually summary report of the Sap calculations).

If you are still perplexed, then simply phone us for additional assistance.

What Are As Built SAP Calculations

These are the final set of SAP calculations created when the dwelling has actually been completed to confirm that it is compliant with Part L1A of the building regulations. Prior to the building starting, it ought to have had some “Design Sap” calculations to show that the planned dwelling, on paper at least, will be compliant with Part L1A.



How To Do Sap Calculations

Unfortunately this is not something that you can do yourself. The calculations must be carried out by an On Construction Domestic Energy Assessor or OCDEA, by using approved Government software programs. The Assessor has to be approved under one of the certification schemes and is also regularly audited to keep up their accreditation.

What Info is Required For Sap Calculations

Your Assessor would advise you of exactly what is needed. Typically you would need the following:

  • Floor Plans to include sections and elevations
  • Orientation of the property
  • Construction specification of walls, roof and floors
  • Specification for all doors and windows
  • Primary and secondary heating
  • Provision for providing  hot water
  • Any renewable technology (if any)


Sap Calculations For New Build

Every new property require Sap calculations to prove compliance with Part L1A (Conservation of fuel and power in new dwellings) of the building regulations.


Sap Calculations For Extensions

It’s now quite fashionable to get large bi-folding doors, sky lights and large amounts of glazing on new extensions. But under the current building regulations the quantity of glazing must be a maximum of 25percent of the floor area of the new extension. So over compensations on the thermal elements in other areas of the property will need to be made to demonstrate that the CO2 emissions coming from the existing house along with the planned extension is not any worse than the existing house and an extension where the glazing is within the permitted amount judged against Part L1B of the building regulations.

You will need SAP calculations to find solutions and illustrate compliance.


Sap Calculations For Conversions

For anyone who is altering the use of a dwelling, you will require Sap calculations. {The new dwelling will have to comply with Part L1B of the building regulations.}


Do I Need Sap Calculations

You will need Sap calculations for any of the following: 

  • Building a new property
  • Changing the use of an existing property (e.g, a barn conversion, commercial building to residential)
  • Extensions with more than 25% glazing
  • Opening up the main house to an existing conservatory
  • Extension where the extension is more than 50% of the original property wall area
  • Garage conversions
  • If requested by building control

This is not an exhaustive list. If you’re not sure whether you require them, then simply give us a call.


Our Services

What You Can Expect From Us

Trusted & Experienced

Our Assessors are fully qualified and accredited with years experience carrying Sap calculation in Coventry . We also cover the whole of the UK and can help on any project nationally.

Reliable & Fully Insured

You will be allocated a dedicated Assessor who is also covered by full professional indemnity insurance up to £100,000 to ensure you know you’re in save hands.

Prompt Service

We’ll respond to your enquiry within 24 hours. We’ll also help you to deliver your project within your timescale.

Satisfaction Guaranteed

We seek to provide 100% satisfaction and look forward to working with you.


Get A Quote, Or Call Us For Advice