• MenuMenu
  • Home

The home of Building Regulation Compliance,Testing and Certification

Tell us what project you are planning and we will let you know what you might need.

Extension SAP


L1B of the building regulations require extensions where there will be an amount of glazing that accounts to the equivalent of 25% of the extension floor area or when a highly glazed area, such as an orangery, is to be opened up to the main house, to demonstrate that it will not be detrimental to the overall energy performance of the property as a whole.

Required For:

  • Extensions with large areas of glazing
  • Building regulations compliance

How we can help:



Building Regulations require a SAP Assessment and Energy Performance Certificate to be produced when an existing building is converted into a new dwelling. Whilst there are not as many requirements as a new build there are certain criteria that our energy assessors will help you with, such as elemental u-values.

Required For:

  • Barn conversions
  • Change of use from commercial to domestic
  • Single dwellings to multi-dwellings

How we can help:

New Build

New Build Dwellings

Whether you are a self builder, architect or a national housing developer we are your 'one stop shop' for building regulation compliance, in particular Part E - Sound, Part G - Water, Part F - Ventilation and Part L - Energy. We also offer guidance and will compile the required documentation to meet your specific planning conditions.

Required For:

  • All domestic new builds
  • Planning
  • Building regulations

How we can help:

Commercial Buildings

Non-Domestic and Commercial Buildings

Your project is in safe hands with Sadler Energy, we have a great deal of experience in assessing and testing commercial properties and understand the specific complexities of such schemes. Whether you are selling a small shop and require an EPC or working on a large scheme requiring BREEAM outstanding, we will guide you through the whole process.

Required For:

  • New commercial buildings / developments
  • Sale of Existing Commercial buildings
  • Public buildings

How we can help:


About us

Sadler Energy and Environmental Services Ltd is an Hampshire based independent Consultancy, providing sustainable development advice, assessments, certificationand testing services. Our aim is to give you impartial and pragmatic advice on all environmental issues working across a broad range of domestic and commercial developements which will enable you to improve performance within the particular constraints of your project.


Why choose Sadler Energy for your next construction project?

There must be a reason why our clients keep coming back to us.

On Time

We know you have tight deadlines and last minute hand overs and we do our best to work to them.

On Budget

Our competitive pricing structure means we wont stretch your budget.


We offer all services under one roof, saving you from managing multiple sub-contractors.

Great Ideas

Our accredited staff continue to stay abreast of latest products and will guide you to the most efficient approach.


Switching to us couldn’t be easier, and we are sure you will find the way we work a breath of fresh air.

Happy Clients

We strive for happy clients, don't just take our word for it, read our great client reviews.

Why not ask us for a quote?

We have extremely competitive pricing, why not get a free non-commital quote.


Latest News

The SAP Rating Scale

The Governments Standard Assessment Procedure (SAP) for assessing the energy performance of dwellings. The indicators of energy performance are energy consumption per unit floor area, an energy costing rating (the SAP Rating), and Environmental Impact rating based on CO2 emissions (The EI rating) and a Dwelling CO2 Emission rate (DER).


Trusted by home owners, architects, housing associations, councils and national house builders alike.

Have a look at some of the clients we currently work with, and see our 5 star reviews.

Our clients included both national and local developers
Our clients included both national and local developers
Our clients included both national and local developers
Our clients included both national and local developers

© 2006 - 2016 Sadler Energy and Environmental Services Ltd.
[Site Map] [Privacy] [Environmental Policy]

SAPs • Code For Sustainable Homes • EPCs • Air Testing
Covering Southern England: Hampshire, Dorset, Sussex, Wiltshire, Berkshire, Surrey and London.


We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we'll assume that you are happy to receive all cookies on the Sadler Energy website. However, if you would like to, you can change your cookie settings at any time.

More Information