Construction Law: Choosing the Right Contract for the Job
June 20, 2022


- Lump Sum Contract (also known as fixed price contracts): A lump sum contract sets one determined price for all work done for the project. The contractor submits a total project price instead of bidding on each individual item. Advantages of a lump sum contract include advanced notice of the final price, the contractor having more incentives to reduce costs and increase profit, and incentive to complete the job as soon as possible. A disadvantage of a lump sum contract includes the large portion of assumed risk of the contractors which make contractors reluctant to bid on the contract.
- Unit Price Contract: A unit price contract typically emphasizes the type of task being carried out in addition to the materials used. Under a unit price contract, the contract price is based upon the price of all individual units of the work. Advantages of a unit price contract include the ease of adjusting prices as the scope of the work changes. Disadvantages of a unit price contract include the final cost and deadlines of the project not being defined in the beginning and many times contractor face a delay in the payment that is due.
- Cost Plus Contract: A cost plus contract generally require the owner to pay for all project expenses, like the cost of materials, labor, and any other projects costs. These contracts will also include an agreed-upon amount or percentage that covers the builder’s overhead costs and profit that the owner also pays. Advantages of a cost-plus contract include a greater chance of the project being completed as planned and the chance for additional performance incentives. Disadvantages of a cost-plus contract include the potential additional oversight by the client to ensure the contractor sticks to the budget.
- Time and Materials Contract: A time and materials contract defines an hourly rate for builders. In addition to paying this rate, owners also agree to pay any related project costs, which are not noted in the contract as direct, indirect, markup and overhead costs. Advantages of a time and materials contract include the flexibility of change and the contractor being compensated for all work and materials needed for project completion. Disadvantages of a time and materials contract include the uncertainty of the timeline to complete the project and there is a chance the client could run out of money prior to the completion of the contract. Another disadvantage of a time and materials contract is that it may be outbid by a lump sum contract due to the lack of fixed price and timeline.
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