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Spon’s First Stage Estimating Handbook
Assessing the total cost of a construction project is a continuous process that commences
when the client asks his professional advisors what it will cost. It ends when the cheque
for the release of the last portion of the retention is paid and the final account is settled.
Whether a project is profitable or not can often depend on decisions taken at the first
stages of its life. The people who carry out this assessment bear the responsibility of
deciding whether the cost information available at the time warrants spending further
time and money investigating the viability of a project that is usually still at the
conceptual stage.
It is vital, therefore, that the most accurate methods of calculating the probable costs
of construction are used and I hope that the information in this book will help clients,
developers, architects, engineers and surveyors involved in this process.
Time spent on the appraisal of projects that do not proceed is not always wasted—
lessons can be learnt that will help the next project. The greater waste lies in allowing
jobs to proceed without the people making the key decisions having the best cost
information available to them.
It is not possible to provide totally accurate cost data in the early stages of a job—only
a historical analysis of the final account can do that. But guidelines can be set out that
should allow the client commissioning the work to help make the right decision before
becoming contractually committed to spending large sums of money on land purchase,
professional fees and construction costs.
On a well-managed project, the cost plan will be monitored continuously as changes
are made to the original design or for other reasons. If the first-stage budget is based on
reliable cost data, the project will have a better chance of being completed within budget.
I have received a great deal of help in the preparation of this book and would like to
thank those suppliers and contractors who gave me their time and support. The
information in Estimating Data on civil engineering outputs is based on data in Spon’s
Civil Engineering and Highways Price Book 2006 edited by Davis Langdon.
Although every effort has been made to ensure the accuracy of the information,
neither the Publishers nor I can accept any type of liability resulting from the use of
the contents.
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