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The client will have a rough idea of how much the job is going to cost but he will wait for the bids and if they all comply with the tender requirements, and are approved contractors with a good track record then he will usually take the lowest.
As tapz suggested, the client will work out the cost.... Well he cannot know the costs that the contractor has. For instance, if you are bidding on building a road one contractor may use dozers that are already paid for. Another may hire them, another may bid with brand new equipment. Mobilization of equipment to the location is another consideration. A local guy may have his labour force and equipment near he site. There will be other differences that distinguish betweeen the bids. Costs are carefully calculated to the bone and profit margin added.
But bottom line, if contractor complies with tender, e.g. dozers must not be more than 5 years old, good safety record etc, then its down to price |
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