SAP Calculations - Extensions

SAP Calculations For Extensions

Building regulations state that the proposed glazed area within your extension should not exceed 25% of the proposed extension floor area. However, most extension designs these days have significantly more glazing than this. If you are extending your home and want to have more glazing than the 25% rule allows, we can produce a specific type of SAP calculation that enables you to do this.

Want to find out how we can save you time and money?

Complete our enquiry form for a quote.

Our SAP Calculation process:

  • Review your plans, specification and make any recommendations
  • Liaise directly with your Building Control Officer (if required)
  • Complete the SAP Calculations
  • Supply the SAP Reports to meet your deadlines.

Why use C80 Solutions for your SAP Calculations?

  • We have performed SAP Calculations on over 5000 extensions to date – with a 100% pass rate
  • We will always find a solution that allows you to keep all the glazing in your extension
  • We always aim to reduce your build costs by providing guidance on the most cost effective way to achieve a pass
  • We never charge for SAP calculations that fail and will always provide guidance to achieve a pass
  • We are able to provide a ’24 hour turnaround’ service on urgent projects (subject to a fee)
  • We also provide SAP Calculations for New Builds & Conversions

We Can Help you...

Save money
Reduce risk
Reduce red tape
Save time

We will reduce your build costs by adopting the ‘Fabric First’ philosophy to remove the need for expensive renewable technologies. We carry out a complimentary specification review on every single project to see where we can reduce your costs.

All our compliance services come with a 100% pass guarantee. We will never charge you for assessments that don’t pass. We will always provide free guidance to achieve a pass in the cheapest way possible.

We operate a common sense approach to building compliance. Our team comes from a background in volume house building, Architecture and Engineering. We understand all the time, cost and hassle constraints involved in construction.

We can provide a 24 hour turnaround on services when required. Also, we will produce your new build EPCs on the same day as receiving the air test result. 

“C80 are very helpful, efficient and professional with fantastic turnaround times on SAP calculations and EPCs. We wouldn’t hesitate to recommend them”


Contact us about SAP Calculations

Reduce your risk, save time and money. Get in touch to see how we can make your next project easier.
Scroll to Top