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Candy model or Build Smart : both is good for detailed Cost, Activity and Time project model. Because they were built up from the most basic resources, individual resources budgets can be sent directly to allow resource procurement with complete accuracy and effective control of both quantities and buying rates. ,
Personally, I don't because I am NOT in the construction sector.
However, since I am in consultancy and services sector, I do take such questions and can advise (from a consultant viewpoint) on how to select the best software solution per true customer needs.
I do the same for banking and I am not a banker, for health-care and I am not a doctor, for airllines and I am not a pilot ,,, and so on so forth !!
As a start point ... I would recommend this link http://en.wikipedia.org/wiki/Construction_estimating_software