RESEARCH PROJECT - SUSTAINABILITY
TITLE
Assess whether
the Code for Sustainable Homes can be utilised
as an assessment method for historic buildings, basing the research on a
260-year-old Georgian farmhouse.
ABSTRACT
In the
Housing Strategy 2011 the Government recognises that homes in the UK need to be well designed, of the
highest quality and environmentally sustainable. This applies to both new and
existing homes, which, where possible, should be more energy efficient and help
to reduce carbon emissions, be resilient to a future climate and protect the
natural environment. High quality homes in high quality natural environments
will support plans for growth and are necessary for social, environmental and
economic sustainability.
The aim of this research is to generate
ratings based on The Code for Sustainable Homes (The Code) for a 260-year-old
Georgian farm house, taking into account the energy consumption in
construction, usage and operation and how that has changed throughout the 260
years. It will also seek to evaluate whether the Code should be amended to recognise the
potential benefits for sustainability in the improvements of existing historic
housing stock.
3 main assessment dates to be considered
are:
1760 - Original construction – Built
entirely from local materials.
1950 - Extension to the original
footprint and first installation of electricity and mains water.
2011 - After major refurbishment/repair
and retrofit in 1991.
THIS RESEARCH PROJECT BECAME ACTION
RESEARCH
CONCLUSION SUMMARY
The Code for Sustainable Homes gives very
detailed guidance and encouragement for the building of new “sustainable”
homes. However its criteria and scoring
provide no support for restoration and redevelopment of existing, particularly
traditional, homes.
The results illustrate that a sensible common
sense interpretation of the Code for Sustainable Homes show that the sensitive
and careful redevelopment and retro fit of traditional residential buildings
can be sustainable. However a strict
application of the Code’s criteria would show that traditional buildings are
unsustainable compared to new construction.
Is this really the case or is it purely the result of the Code failing
to adequately measure the long term sustainability of traditional buildings? The
answer is, of course, not simple. The
Code is designed only for new construction, but if Government is seeking to
encourage better design and increased sustainability in meeting its housing
targets, does the Code skew the argument unfairly towards new residential
construction.
Developers know very clearly the cost associated
with the acquisition and development of green field sites. The renovation and
retrofit of existing housing stock is more financially problematic. Sometimes
there is a risk of ground contamination and there can be unexpected additional
costs in the renovation of existing buildings. Just as the Government provides
grants for the development of sustainable energy sources a proper evaluation of
the benefits of renovating existing housing stock could lead to the reintroduction
of government grants to remove the element of insecurity for private
developers.
This research could therefore be extended
by accessing each level of The Code against similar scale new build or retrofit
projects and suggesting a mechanism for a parity between the two.