Cambridge SAP Calculations for New Builds, Extensions and Conversions

We work with you every step of the way. With over 10 years’ experience, we are the experts you can trust.

Get a SAP Calculation Quotation

Please fill in some basic property information below so our team can give you the best quote.

If available, please upload floor plans and elevations and a summary of your project requirements.

Your details will be passed onto the appropriate people to deal with your enquiry. Your details will not be used for marketing purposes.

Call us now on 0333 772 7398 or click to Email Us

For all your Sustainability & Energy Services

Are you looking for SAP Calculations Cambridge?…

Our experienced, friendly and knowledgeable team have worked on many different projects and can provide all the energy assessment services you need including SAP Calculations, SBEM Calculations, Energy Statements, BREEAM Assessments, M&E DesignEPC’sWater CalculationsAir PermeabilitySound TestingVentilation Testing and U-Value Calculations.

Our Process

SAP Calculations for New Builds

Many of the projects we take on require an improvement rating of 40% or over building regulations which we have always managed to achieve, despite sometimes having tight budget restraints set out to us.

For this reason alone, we are confident that you won’t be disappointed in what we have to offer.

We understand that you have deadlines to meet so always offer the same day response to any technical query that you may have. In addition to this, we offer a 48-hour fast track service for urgent jobs and a same day EPC Certificate as standard, so you won’t be kept waiting.

Schedule your EPC


We work 24/7 to suit your needs and book appointments to suit your busy schedule. Including evening/weekend appointments.

Assess your plans

Assess your plans & specifications

Assess your plans and specifications and make recommendations if applicable.

SAP Calculations

SAP Design Stage Calculations

Our qualified SAP Assessors will calculate and produce your Design Stage Calculations.

Guidance for pass

Guidance for pass (if applicable)

If required, we will provide guidance and advice to help you achieve a pass.


Complete SAP Calculations

Complete Calculations & EPC's

Our team will complete and publish your As-Built Calculations and EPC Certificates.


Your SAP documents

Your Documents

Our qualified Assessor will supply you with all your  documents to meet your deadlines.


Do I need SAP Calculations for an Extensions, Conversions or Conservatories?

The simple answer is Yes.

You will require SAP calculations whether you are extending, converting or changing the use of a property.  You will need to ensure that your specifications meet the requirements of building control. (Part L1B in England and Wales and technical handbook section 6 in Scotland).

Schedule your EPC


Building regulations state that any new floor space within an extension should not have more than 25% of glazed areas.

Of course, many extensions have more than this and therefore as standard would fail the assessment.

We can help and assist you in getting around this issue quickly and hassle-free.

The Assessment


Conversions may be defined as creating a new dwelling from an existing building. For example, changing an office building into flats or converting a barn.

In this case, you need to ensure that the required U-Values are met and the new heating system meets all minimum efficiencies.



If you are planning on building a conservatory that is thermally separate from the dwelling, it will be treated as an extension and therefore require calculations.

We are happy to deal with your Building Control Officer and take care of everything so that you don’t have to.

Why Choose Us?

  • Professional and reliable
  • Flexible appointments to suit you
  • Friendly, practical advice
  • 10 years’ experience in the industry
  • We work with you every step of the way
  • Affordable pricing

SAP Calculations for Extensions and Conversions

Our highly qualified building surveyors will undertake SAP Calculations from supplied plans and construction specifications and ensure that all new and existing features are taken into account.

We will always consult and advise several variations on how to get the job done, working with you every step of the way. A typical example could mean leaving existing walls and floors untouched and where new heating systems may need extra consideration to pass.

We are happy to deal with your building control officer directly to understand what is required and take care of everything so that you don’t have to.

With Over 100 five star review rating Reviews, We are SAP Calculation Experts in Cambridge

What our customers say about us

  • 5 star review  We had our EPC evaluation done recently. The gentleman Ross who we have contacted booked us in quickly in slot that was ideal for us. The evaluation went well and smooth, he has explained step by step what it involves what he is checking and provided us with a recommendation for how to improve things. He was very helpful and professional. Would highly recommend the company!

    thumb Joanna Gorzolka

    5 star review  Brilliant service. Couldn't have provided a better service! We would thoroughly recommend.

    thumb Rory Brennan

    5 star review  Sam was great, we called up and he fitted us in so quickly!! Couldn't reccomend him more!

    thumb Amy Brennan
  • 5 star review  Fantastic , well organised serviced , from initial enquiry to the epc being carried out , time and date arranged, Ross , was on tine , friendly and helpful , certificate issued the same day , wouldn't hesitate to recommend this company , thanks very much

    thumb Mark Badman

    5 star review  Great service, very professional and polite. They fitted me in quickly and turned up on time. Got the EPC that day. Will definitely be using them again for other properties

    thumb Pandora Blackwell

    5 star review  Excellent company, friendly, polite and very efficient/fast service. Would highly recommend.

    thumb Kelly Parsons
  • 5 star review  Very friendly and easy to deal with, one phone call to make arrangements, they came on time, and I had my certificate that evening.

    thumb Robert harrison

    5 star review  Fast and professional service with certificate available within hours of the survey. Very impressed.

    thumb Chris Aylott

    5 star review  Can recommend this company. I had the EPC within a few hours of Sam's visit. Easy to deal with. Thank you. Will hold your details for the future.

    thumb Jo Sutcliffe

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SAP Calculations Aberdeen

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Other recommended services


U-Value Calculation Service

Contact us for a quote

A U-Value calculation is used to quantify the amount of heat that is transferred and lost through any thermal element of a building (walls, floors, roofs).


Water Calculations

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Our water calculations can be carried out alongside your SAP/EPC calculations providing you with a cost-effective and professional level of service which meets all your building compliance needs.


Energy Statements

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Local Planning Authorities now require the submission of an Energy Statement as part of the planning application. Contact Focus 360 Energy today.


Air Testing

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All new developments in the UK are required to have an air test carried as part Approved Document Part L (England and Wales) and section 6 of the technical handbook (Scotland).


Ventilation Testing

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Ventilation Testing is a requirement for all new build developments under Part F of the Building Regulations. 


Sound Testing

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Sound testing is used to measure the compliance of your new build, refurbishment or conversion project with Part E of the building regulations.

Get in touch to request a free consultation

If you would like to discuss your requirements further, but prefer meeting face to face, please fill out your details and we will get back to you as soon as possible (usually within one working day)