Stevenage Sap Calculations

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What Are Sap Calculations?

If you are reading this, you’ve probably recently been requested by someone, normally 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 the video clip on this page, where Andreas will shed some light on this, or continue reading.

 

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Stevenage SAP Calcs For Dwelling Change Of Use

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

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

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

What does SAP mean?

SAP is short for Standard Assessment Procedure and its the united kingdom government’s method of calculating the energy performance of buildings. These calculations are necessary to illustrate your building complies with specific energy targets laid down within the building regs.

As a quick overview, that’s essentially it.

 

When Are SAP Calculations Needed?

Sap calculations tend to be needed for 3 reasons
1. For all newly built properties
2. For a dwelling change of use, such as changing a single family home to flats.
3. For a planned extension that has in excess of 25 percent 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.

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

If your sap calculations show that your property is not compliant, the Assessor will give you information on improvements that may be made to make it so. It could be expensive if you find out at a late stage in the construction that the building is not compliant. So it’s wise to liaise with your Assessor as early on in the project as possible, ideally before any building commences.

If you require guidance on a project you could have in Stevenage , or require a quote, call us or fill in our get a quote form.

 

Here we have provided the most common questions asked about SAP Calculations in Stevenage.

What Are Sap Calculations?

This really is 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 Do They Cost

The typical price range will be between £100 – £300, that is depending upon the difficulty and proportions of your property. There may be an additional fee of approximately £50 if an EPC is called for at the end of the construction. Discounts would typically be available for multiple properties especially if they are of the identical type of construction.

What Is The Difference Between Sap and EPC

Before we explain the difference, this is what you will need depending on your job.

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 put together to display the energy efficiency of a dwelling. An EPC or Energy Performance Certificate is a overview report created from the Sap calculations that produces a SAP score from 0 to 100. This score is shown on the EPC as A the highest to G the lowest. It will also list recommendations that would enhance the rating of your property.

There are actually 2 kinds of EPCs. The first is a SAP EPC which is created from building plans when all the components of the building are known. This would normally be needed by building control to show that a property complies with specific targets essential to the building regulations. Building control would also need to see the SAP calculations which shows in detail whether the many components going into your property comply with the building regulations.

The second form of EPC is the typical 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 specific thermal values of, such as, the walls, roof, floors, etc, usually are not precisely known on an established property. In this situation assumed thermal values are used based on the age of your property. This sort of EPC would be no good to show compliance with any building regulations. Sometimes building control would simply ask you to get an EPC, however 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 from the Sap calculations).

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

What Are As Built SAP Calculations

These will be the finished set of SAP calculations generated once the dwelling has been completed to show 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 building, in theory at least, would be compliant with Part L1A.

 

 

How To Do Sap Calculations

No, this is not something that can be done yourself. Sap calculations have to be carried out by an On Construction Domestic Energy Assessor or OCDEA, working with approved Government computer software. The Assessor must be certified under one of several certification schemes and is also regularly audited to keep their qualification.

What Info is Needed 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 demonstrate compliance with Part L1A (Conservation of fuel and power in new dwellings) of the building regs.

 

Sap Calculations For Extensions

It’s now quite trendy to have large bi-folding doors, sky lights and large amounts of glazing on new extensions. However under the present building regulations the quantity of glazing must be a maximum of 25percent of the floor area of the new extension. Therefore over compensations in the thermal elements in other areas of the property will have to be made to show that the CO2 emissions coming from the current house and the planned extension is no worse than the existing house and an extension whose glazing is within the permitted amount judged against Part L1B of the building regulations.

You will require SAP calculations to find solutions and show compliance.

 

Sap Calculations For Conversions

When you are 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 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 is not an exhaustive checklist. If you’re uncertain whether you 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 years practical experience carrying Sap calculation in Stevenage . We also cover the whole of the UK and can help on any job 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 seek to provide 100% satisfaction and look forward to working with you.

0800-046-7345

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