Environmental services
from sustainability reports
to SAP calculations


We know you are busy people and time is money. Our clients use us because we are quick, efficient and come up with realistic build solutions that are cost effective. At Fusion 13, we offer bespoke services to meet our clients’ specific requirements. Our approach is to support you throughout the process and make compliance practical for you.

Commission us to work independently or in close collaboration with other architects and consultants.

Environmental services, SAP calculations, picture of fabric first construction, insulation detail.

SAP calculations, Predicted Energy Assessments (PEA) and Energy Performance Certificates (EPC)

Part L of Building Regulations

We don’t offer an ‘off-the-shelf’ SAP service. Feeding plans into the software and getting a pass or fail. Or adding on loads of renewables to get a pass. Instead we work with you, on site if necessary. Taking on board your preferred construction methods to ensure compliance and cost-efficiency.

We can also help you at tender stage. Producing a design specification with you from planning drawings that will meet Building Regulations. This will give you more certainty in your build costs.

Environmental services, SAP calculations, Code for Sustainable homes, water calculations photo of tap/sink.

Water calculations

Part G of Building Regulations

Referring to Part G of Building Regulations for England and Wales. All new dwellings must be designed to use less than 125 litres of water per person per day. Water levels have to be even lower for CSH and HQM accreditations. Our team will work out the best way for you to achieve water efficiency compliance.

Picture of residential dwellings, Norfolk, SAP calculations and Code for Sustainable Homes (CSH).

Home Quality Mark Assessor (HQM)

This is the Building Research Establishment (BRE) voluntary housing standard

“The Home Quality Mark (HQM) provides housing developers with the tools they need to convince customers of the quality and added benefits of their new homes – such as being likely to need less maintenance, being cheaper to run, better located, and more able to cope with the demands of a changing climate.” – BRE

Contact us for more information on HQM and how we can help.

PV panels - renewables on dwelling Environmental services.

Code for Sustainable Homes (CSH)

This was the national standard for sustainable housing design and construction of new homes. The Government withdrew it in April 2015. However, you still need to meet it if:

  • Your development started being built when CSH was still active
  • A development is legally contracted to apply a CSH policy
  • A project was granted outline planning permission before 27 March 2015

Lee Marsh is a qualified CSH assessor and has carried out more than 400 CSH assessments (Levels 1-6). He offers pre-assessment, design stage assessment and post-construction inspection, documentation and submission.

Environmental services, SAP calculations, daylighting calculations and water calculations. New build affordable homes, White Horse St, Lowestoft.

Daylighting calculations

Within the CSH, credits can be awarded when key rooms have better than the minimum requirements regarding daylighting. This is noted by the Building Regulations. Detailed daylighting calculations are produced in line with the requirements set out by the Building Research Establishment (BRE).

We can advise on the best way to achieve the daylighting requirements for your project.

Picture of Clover Court, Clapham Road South, Lowestoft, Code for Sustainable Homes, SBEM and SAP. Wellington construction on behalf of Saffron Housing Trust and Victory Housing Trust.

Simplified Building Energy Model (SBEM) calculations

SBEM calculations analyses a non-domestic building’s energy consumption. It calculates the monthly energy use and carbon dioxide emissions.

SBEM is currently used to determine CO2 emission rates for commercial buildings in compliance with Part L of the Building Regulations in England and Wales.

Although it may assist the design process, it is not primarily a design tool.

Other specialist services

Fusion 13 also offer planning services and architectural design services.

We can offer the complete package or individual services.

Get in touch

To discuss your requirements, give us a call 03333 443013 or drop us an email enquiries@fusion-13.co.uk