We provide energy assessments, surveys and more for your construction project.
You are in safe hands with us. We are industry professionals based in East Anglia providing energy assessments, surveys and more for construction projects nationwide. Whether you’re a homeowner, industry professional or developer - we can help.
✔ Experienced Professionals
✔ Fast Turnaround
✔ National Coverage
✔ Reliable Service
Welcome to CAS
As seasoned industry professionals with over 30 years of experience, we focus on optimising the energy performance of our built environment. Our comprehensive suite of energy and sustainability services spans from project conception to completion. Whether you’re at the concept stage or nearing project delivery, we’re here to assist. Our expertise, cutting-edge software, and carefully curated assessments empower your project to achieve the highest energy standards, providing unique support at every stage. But that’s not all. We’re passionate about shaping environmentally responsible designs. Our company ethos centres around seamless collaboration, ensuring you receive the right assessments and surveys promptly and hassle-free. Our industry knowledge sets us apart. Founded by Architects and Passive House professionals, we offer an holistic approach to energy performance. Operating nationwide across the UK, we prioritise compliance, cost-effectiveness, and practical solutions for the smooth execution of your project.
Our most popular services…
SAP
For a new build homes
For residential developments
For residential extensions
SAP Calculations in compliance with Building Regulations Part L1A (new builds) and Part L1B (extensions). Our comprehensive SAP Calculations include U-Values, detailed reports for Building Control, and expert advice and specifications to ensure full compliance.
From £295
SBEM
For Commercial buildings
SBEM calculations in compliance with Building Regulations Part L essential when building or extending a commercial building UK. Our comprehensive SBEM Calculations include U-Values, detailed BRUKL report for Building Control, and expert advice and specifications to ensure full compliance.
From £350
Retrofit
Retrofit assessment for dwellings in accordance with PAS 2035. Our comprehensive assessments include U-Values, detailed reports for Building Control, and expert advice and specifications to ensure full compliance.
From £250
Water
Calculations
PART G
For all building types
Water efficiency calculations in compliance with building regulations Part G. This calculation measures the overall water efficiency in buildings which are essential for compliance and ensuring proper water usage.
From £150
U Value
Calculations
PART L
For all building types
U-value calculations in compliance with Building Regulations Part L. This calculation measures the overall rate of heat transfer through a specific section of construction. These help our clients understand thermal efficiency of individual building components.
From £50
Overheating
Calculations
PART O
For all building types
Overheating calculations in compliance with Building Regulations Part O. This calculation measures the potential for overheating in buildings which are essential for compliance and ensuring thermal comfort.
From £250
Consultancy
Including but not limited to:
- Passive House design and advice
- General design advice
- Building Regulation compliance support
- Energy efficiency review
- PAS2035 support
- Simulation modelling
Unlock the Power of 30+ Years of Energy Expertise for Your Project. Our team brings a wealth of knowledge for both design and construction stages and through to completion.
Contact us to discuss
How does it work?
Our friendly quote team can answer your questions and provide your quote quickly. Get in touch for your free, no obligation quote.
Complete our quote form or contact us
Tap the yellow button below to let us know the assessment or survey you require. In return we will send you a quote explaining everything you need to know including a short interactive booking form.
Select your service and give us the go ahead
Complete the booking form and email it back to us, we will then book in the next available date for your survey and get to work.
Get your report
Upon completing your assessment or survey, we swiftly write the report and issue it to you upon payment.
Ready for a Quote?