Offices Nationwide 

Bristol - Sustainable Homes - 0117 212 0189

The office that covers this area is: Cardiff

Phone Number: 0117 212 0189 Email:

A Sustainable Homes - A Sustainable Homes in Bristol

The A Sustainable Homes in Bristol is the environmental assessment method for rating and certifying the performance of new homes; it is also known in Wales as part of the Carbon Reduction Commitment Scheme. In England it was launched in December 2006, by, the Department for Communities and Local Government (CLG and became operational in April 2007 as the new national standard for sustainable design and construction of new homes. Since the 1st of May 2008 the developer of any new home in Bristol a must have a mandatory rating against the Code.

We have made our service as efficient and user friendly as possible. By providing us with the development drawings and details requested on our online C4SH data form, we provide you with your formal C4SH fee proposal.

The UK Government has committed to a reduction in carbon emissions of 80% by the year 2050. Improvement of all the new and existing housing stock in Bristol will be instrumental in achieving this target. The key to achieving these carbon reduction targets, for new and existing dwellings in Bristol is by being more energy efficient. By having a Code Assessment, a level of reduction can be established.

The whole construction and house building industry must start building more sustainable properties in Bristol .To initiate this; the Government has introduced the new national standards for the use in the design and construction of new homes in Bristol . The Code Assessment for Sustainable Homes or the Carbon Reduction Commitment (CRC) is the means of assessment.

It is a compulsory requirement for every new dwelling in England to achieve a rating or score against the Code assessment (C4SH). Information on this rating is to be made available to all potential buyers through a (HIP) Home Information Pack. This indicates whether the home has been built to a specific level of the Code, and if so, which one.

The Code assessment measures the 'whole home' sustainability of a new dwelling in Bristol against the nine categories of sustainable design; this produces a rating of the 'whole home' as a complete package. Each category is then further divided into further components which are individually assessed against a performance target and awarded the relevant credits for achievement.

It is a compulsory requirement for all new dwellings in England to have undertaken a Code assessment .This Information on the Code rating must be made available to potential purchasers via the Home Information Pack (HIP).The Code rating will state at what level the home has been built to.

Code Assessments (C4SH) have a rating system from one (1) to six (6) stars to show the overall sustainability performance of a new dwelling. One is the lowest rating and six the highest. A six star rated home is also classed as being zero carbon. Code assessments in Bristol set a minimum requirement for energy and water usage at different levels of the Code.

Code is measured by a weighted scoring system over 9 specific categories, this, when scored defines which code level the dwelling has reached.

Code at level six, is an aspirational standard which requires zero carbon emissions to be produced from the dwelling. Codes definition of a zero carbon home is a dwelling where the net carbon dioxide emissions resulting from ALL the energy used in the dwelling is at zero or better.

Code assessments in Bristol can only be carried out by a qualified and accredited Code Assessor. Assessments are generally a two-stage process: after Pre assessment, with the Design Stage, which leads to an interim certificate. This is followed by the Post Construction Stage, where the final certificate is issued. Evidence has to be collated and used to determine the rating via the number of credits that are awarded for each element. A summary report is submitted by the Code Assessor to the Code Service Provider for quality assurance and certification.

All proposed sites, dwellings and developments requiring an assessment should be registered with the Code Assessors accreditation body as early as possible. A proposed development can only be registered against the current version of the Code. Sites which have been registered in Bristol against a previous version can be re-registered under the current version of the Technical Guide. Each registration is valid only for a maximum of 5 years between the expiry of the Technical Guide version it was submitted against and the submission of the design stage report.

There is no time scale once a project assessment has started on the delivery of the Post Construction Stage report.

If you require free initial advice, consultancy services or a definitive quotation on a A Sustainable Homes assessment in Bristol call one of our Bristol consultants at our Bristol Office on 0117 212 0189 or Email

Our other services include:
Part F Ventilation Testing, Part G - Water Calculations, Air Leakage Testing, Sustainability Statements, Acoustic Testing, SAP Extension Calculations, SAP Calculations (TER/DER), Part E, On Construction EPC, Environmental Noise, SAP Conversion Calculations, Energy Statements, Thermography,

Sustainable Homes can also be known as:
CSH, Code Assessment, Code for Sustainable Homes, Code for Sustainable Homes Daylight Calculation, C4SH,

E2 Specialist Consultants
July 22 at 5:05pm
One of our office-based consultants is hard at work on the SBEM calculation for a commercial new build in Bristol, Avon. You can get yourself an SBEM quote from our website:

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