What is Part F Ventilation Testing?

If you are developing new houses or flats then ventilation testing is something you may be asked to carry out. However it can be a difficult one to advise on, due to inconsistent enforcement by building control bodies (BCB). Part F of the building regulations (2010) deals with ventilation requirements in buildings and covers a host of topics from design and installation to testing. The bit we are really interested in is the implications for […]

Hoover Building Achieves BREEAM Excellent Rating

We have a couple of very exciting updates on our Hoover Building project!         We can now proudly announce that the scheme has not only been nominated for a 2018 BREEAM Award, but has also successfully completed the post construction assessment, achieving an ‘Excellent’ score of 75.5%. This means that the scheme is one of only 47 finalised homes schemes in the UK to achieve either an Excellent or Outstanding certification. For […]

How to Pass L1a with Electric Heating

We are using more power than at any other point in history. This is hardly surprising considering the number of electrical devices the average household uses or relies on a day to day basis. The average British household has 7.4 devices connected to the Internet. All of those need power. Throw in televisions, Blu-ray players and even the wireless router and it’s easy to see how we as a nation are consuming energy at such […]

The Bournemouth Development Company

In the 1960s a development corporation was established to create the UK’s first modern, planned town. Milton Keynes was touted as a new garden city that followed an American style block system that was all but self-contained in terms of its amenities. Intended to relieve the housing congestion in London, its target population was 250,000 and would occupy 21,850 acres, absorbing a number of towns and villages in the process. Unlike most major town developments, […]

Air Permeability Testing – Get Your Building Airtight

Once a build is complete, an essential part of our work is testing for air tightness. Air Permeability Testing is a crucial phase of any build as the result will significantly affect the energy performance of the building. Here we are going to give you our top tips for ensuring your building is as air tight as possible. But first some background for the uninitiated… Air Permeability Testing – What you need to know As a […]

SAP Technicals – Fuel Choice Part 2

  In the second part of our technicals series, we look at the effect of Fuel Factors in SAP Calculations. In Part 1 (Using Different Fuels in SAP) we explained how the target emissions will increase based on a fuel factor if you are using certain fuels such as electricity, LPG or oil. Fuel Emissions kgCO2 per kWh Multiple of gas emissions Fuel Factor Mains Gas 0.216 1.00x 1.00 Electricity 0.519 2.40x 1.55 LPG 0.241 […]

SAP Technicals – Fuel Choice Part 1

What effect does my fuel choice have on SAP compliance? Can I pass with electric heating? We aim to answer these questions and more in this 3 part technical series. The headline compliance targets in Part L1a of the building regs are based on carbon emissions – that is achieving a DER (Dwelling Emission Rate) equal to or lower than the TER (Target Emission Rate). The fuel type you use to provide your hot water and […]


Some of you may know that we’ve been raising money for Guide Dogs over the last few years, and more specifically through our ‘Name a Puppy’ fund. Last year we hit our target of £5,000 thanks to our generous friends, family, clients and colleagues. This allowed us to name a new puppy and fund her early development and training.   Well, this week the exciting moment came when we got to meet Suzie in the […]

U-Value Calculations

What are U-value calculations and how do they relate to SAP? A U-value is a measure of the rate of heat transfer through a structure, with a lower U-value meaning a better insulator. In terms of SAP assessments, U-values relate to all exposed: Floors Walls Roofs Doors Windows Roof-lights U-value information for openings (doors, windows and rooflights) will need to come from the supplier or manufacturer. In terms of glazed openings, the required U-value is […]

What is SBEM and Why is it Important?

SBEM calculations, much like SAP for residential developments, are used to demonstrate the energy performance of new non-dwellings (or extending existing ones). As an industry the construction business is under mounting pressure to make buildings more sustainable both from regulators and from clients. The challenge for the developers is that traditional – and therefore lower cost – methods aren’t meeting expectations. Non-dwelling buildings cover offices, warehouses, retail units, restaurants, leisure centres and retirement homes. Introduction […]