Energycount - Domestic Energy Assessors & Home Inspectors
Code for Sustainable Homes

The Code for Sustainable Homes

is a rating system for new homes based upon a series of mandatory and optional criteria. Credits obtained in 9 categories equate to points to give a Code level from 3 to 6.

Code for Sustainable Homes

The Code is a national standard for use in the design and construction of new homes with a view to encouraging continuous improvement in sustainable home-building.

The Code covers nine categories of sustainable design:

  • Energy & CO2 Emissions
  • Water
  • Materials
  • Surface water run-off
  • Waste
  • Pollution
  • Health & Wellbeing
  • Management
  • Ecology

Credits are awarded for various sub-categories within each main category. The total credits make up a points total which determines the Code level:

Code Level
Points required
Percentage improvement in DER/TER (CO2 emissions) over Part L1A of the 2010 Building Regulations
Level 3 ***
Level 4 ****
Level 5 *****
Level 6 ******
zero carbon



Categories are weighted differently, making some more valuable than others, as the graph below shows:

Credits obtained in each category are multiplied by the corresponding weighting factor to give the points achieved in that category.



Mandatory & Optional Credits
The Code contains several mandatory elements which must be achieved to gain compliance, plus other non-mandatory elements that help achieve the number of credits required.

The Mandatory Credits:

Ene1 (DER/TER)
Credits for reduction in DER/TER.
0% = 0 Credits, 8% = 1 Credit, 16% = 2 Credits,
25% = 3 Credits (level 4), 36% = 4 Credits.

Wat1 (Internal Water Use)
Max. 105 litres/person/day, level 3&4 (3 credits)
Max. 80 litres/person/day, level 5&6 (5 credits)
(NB. 90 litres/person/day = 4 credits).

Mat1 (Environmental Impact of Materials)
Based on BRE Green Guide. Materials used must be rated A+ to D
(for at least 3 of the main construction elements (roof, upper &
ground floors, internal & external walls, glazing).

Sur1 (Surface Water Run-off)
Post-development run-off should be no greater than pre-development.

Was1 (Household Waste)
Adequate storage, both internally and externally
for recycling and non-recycling bins/containers.
(100 litres for 1 bed + 70 litres per extra bedroom)

Hea4 (Lifetime Homes - Level 6 only)
Mandatory for CSH level 6 only, 4 credits available where all 
principles of Lifetime Homes, applicable to the dwelling being
assessed, have been complied with.


Our Service
Energycount are a team of experienced building consultants and surveyors with sound knowledge of a wide range of disciplines, particularly in the fields of energy-usage and sustainable design.

We provide numerous clients with a full service for Code Assessments, from the initial stages of your project right through to sign-off. We can provide your SAP assessments and arrange all associated surveys, etc. in order to produce a hassle-free experience.

We conduct Code assessments in 3 stages:

  • Pre-assessment
    Initial guidance & advice to help achieve your required Code level. This is generally a discussion document to help with producing the best solution to achieve the desired Code level. In-house report issued where required by the planning authority.

  • Design stage assessment
    Including site registration. The desired CSH solution is mapped out and submitted for accreditation. Evidence is gathered and calculators completed. Interim Certificate issued.

  • Post-construction stage assessment
    As-built specifications and evidence gathered, checked and submitted. Final Certificate is issued.

Depending on your local authority you may be asked to provide a CSH pre-assessment with your application, or a request for an Interim Certficate may be made upon approval as a planning condition.

Whatever your requirement we can guide you through the process. We pride ourselves on our competitive fees and real-world, objective approach to assessments.

Simply call us or email details of your project:

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  Prices quoted are current on day of issue only and may be subject to increases. All prices above exclude VAT and are subject to VAT at the current rate.  

Easy Code Guide - Simplifying The Code for Sustainable Homes

Easy Code Guide
- Get your hands on our
pocket guide -
Contact us for a copy
(available as PDF or hard copy 8-page booklet)

Full of essential tips, FAQs & an Easy Credits guide...

click here >




SAP Calculations
- For Architects, Developers & Self-Builders

Use our Plan Rating Service for SAP Ratings & guidance regarding Part L compliance.

  New Build Homes will require an EPC from 6 April 2008  
  Heat Loss Calculations
- for Heat Pump installations

Get a SAP assessment to work out the heat losses of your property. Contact us for more details.
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Registered in England 6249191
VAT Reg Number 909 7269 86.


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