What is a provisional sum?

Answer

A provisional sum is an estimate of the cost of completing a particular job. A provisional sum includes the cost of supplying any materials needed for work.

If, after making all reasonable inquiries, a builder cannot provide a definite price for an item at the time the contract is signed, the builder should provide a provisional sum. Determining the provisional sum allows work to begin with the expectation that, as the work continues, the amount may change based upon the scope of the work. The client is responsible for paying the difference between the provisional sum and the actual cost.

Q&A Related to "What is a provisional sum?"
In math, a sum is the answer that a person gets after using addition. The sum is another word for solution after two or more numbers have been added together.
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A provisional invoice is helpful in cases in which a third party will need to review an invoice before a final invoice is issued for payment The provisional invoice serves as a form
http://www.ehow.com/info_8759082_provisional-invoi...
additional but not binding words. Literally, it means Provided or serving only for the time being. Its synonym is temporary.
http://wiki.answers.com/Q/What_is_the_meaning_of_p...
n Tentative treatment plan that may be modified or continued upon reevaluation of periodontal status after initial therapeutic procedures.
http://www.answers.com/topic/provisional-treatment...
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