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So, What Exactly Are Sap Calculations

For anyone who is reading this, you have more than likely been requested by somebody, typically your building control officer, to supply sap calculations for your building project. But you probably haven’t been told what sap calculation actually are and why you need them.

You can either click on the video clip on this page, where Andreas will shed some light on this, or continue reading.

 

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Colindale SAP Calcs For Dwelling Change Of Use

  • Reports for Part L1B Compliance
  • SAP EPC
  • Free Advice
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Colindale SAP Calcs For Overglazed Extensions

  • Carbon Emissions Reports
  • Heat Loss Calculations
  • Free Advice
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Colindale SAP Calcs For New Builds

  • Reports for Part L1A compliance
  • SAP EPC
  • Free Advice

What does SAP mean?

SAP stands for Standard Assessment Procedure and its the UK government’s means of determining the energy efficiency of properties. Sap calculations are necessary to show your building conforms with specific energy targets laid down within the building regs.

That’s more or less it in a quick overview.

 

When Are SAP Calculations Needed?

Some of the reasons you might be asked for sap computations
1. For extensions that have more than the permitted amount of glazing
2. For all newly built properties
3. For a dwelling change of use, for example a barn conversion

The sap calculations must establish that the dwelling emission rate (DER) and the dwelling fabric energy efficiency (DFEE) conform to certain targets.

A good set of building drawings will need to be provided to the Assessor, as all the calculations are done from the building drawings ,so there is no need to visit the property. Your Assessor will advise you of precisely what is needed. After the calculations are finished, an Energy Performance Certificate or EPC can also be produced.

If your sap calculations show that your property is not compliant, your Assessor will give you advice on improvements that may be made to make it so. It could be expensive if you realise at a late phase in the construction that your building isn’t compliant. So it’s wise to liaise with your Assessor as early on during the project as possible.

If you need guidance on a project you may have in or around Colindale , or simply require a quote, contact us or fill in our get a quote form. We’re here to help.

 

Here we have presented the most common queries asked about SAP Calculations in Colindale.

So, What Exactly Are Sap Calculations

This is certainly quite possibly the most frequent query asked. Have a look at Andrea’s video explanation above, or read the full explanation here on the right.

Sap Calculations, How Much Are They

We would be pleased to offer discounts, for example for properties which are the exact same or similar design. But typically for a single property the charge would be in the region of £120 – £300. By supplying the plans, it will be possible to get yourself a fixed price quote.

What Is The Difference Between Sap and EPC

Before we get to the differences, 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 computations of pre defined data set of a properties design that’s created to demonstrate the energy efficiency of a property. EPC stands for Energy Performance Certificate and it’s a summary report from the SAP calculations in an simple to comprehend document, that could also be used to market or rent out a property.

There are actually two types of EPCs. The first is a SAP EPC which is produced from building plans when all of the components of the building are known. This will normally be needed by building control to show that a 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 of the elements going into your property conform to the building regulations.

The 2nd sort of EPC is the common one that will be needed when you are selling, or renting a property. This kind of EPC uses what’s called rdSAP, which stands for Reduced Data Standard Assessment Procedure, which is used where specified thermal values of, for instance, the walls, roof, floors, etc, are not precisely known on an established property. In this instance assumed thermal values are used based on the age of your property. This sort of EPC would be no use to show compliance with any building regulations. Sometimes building control would simply ask you for an EPC, however what they would really need are the Sap calculations (which is the data behind the EPC) and the SAP EPC (which is actually summary report from the Sap calculations).

Still perplexed, after that give us a call for additional assistance.

What Are As Built SAP Calculations

These are the finished set of SAP calculations generated when the building has been completed to confirm that it is compliant with Part L1A of the building regulations. Prior to the building starting, it should have had a set of “Design Sap” calculations to show that the planned construction, on paper at least, would be compliant with Part L1A.

 

 

Can I Do The Sap Calculation Myself

No, this is not some thing you can do by yourself. The calculations must be carried out by an On Construction Domestic Energy Assessor or OCDEA, using approved Government computer software. The Assessor must 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

All new property need to have Sap calculations to show compliance with Part L1A (Conservation of fuel and power in new dwellings) of the building regs.

 

Sap Calculations For Extensions

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

You need SAP calculations to find solutions and illustrate compliance.

 

Sap Calculations For Conversions

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

 

Will I Need to have 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 checklist is not exhaustive. If you’re not sure whether you will need 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 several years experience carrying Sap calculation in Colindale . We also cover the whole of the UK and can assist 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 and that means 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 aim to provide 100% satisfaction and look forward to working with you.

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