According to the Associated General Contractors of America (AGC), the owner of a contract essentially attributed the entire risk to the contractor, who can be expected to impose a higher mark-up to avoid any unforeseen contingencies. A contractor under a lump sum contract is responsible for the proper execution of the contract and provides his own means and methods to carry out the work.  By indicating unit prices, the owner can easily verify that excessive prices are charged for purchased goods or services. The unit price can be easily adjusted upwards and/or downwards in the event of a change in range, allowing the owner and the owner to enter into agreements in the event of a change. A lump sum or agreed contract requires the provider to provide certain services at a specified or fixed price. In a lump sum contract, the owner essentially attributed the full risk to the contractor, who can be expected to impose a higher mark-up to avoid any unforeseen contingencies. A supplier mandated under a lump sum contract is responsible for the proper execution of the contract and provides its own means and methods to complete the work. This type of contract is generally developed by estimating the cost of labour, the cost of the equipment and adding a certain amount covering the overhead and profit margin of the contractor. A lump sum contract is normally used in the construction sector to reduce planning and order management costs. It is called a package because the contractor must submit a total and total price instead of offering individual items. A lump sum contract is the most recognized contract form for simple, small projects and projects with a well-defined scope or construction projects for which the risk of different implementation conditions is minimal. A lump sum contract is an important contract that must be used when the requested work is clearly defined and construction designs are completed.
The lump sum agreement will reduce the risk of ownership and the contractor will have more control over profit expectations. It is also a preferred choice when stable field conditions, comprehensive pre-construction studies and evaluations are completed and the contractor has analyzed these documents. The agreed sum contract may, if the agreed parties, include certain unit prices for items with indeterminate quantities and the abatement to cover unexpected conditions. The time to award these types of contracts is also longer; However, it will minimize modification tasks during construction. A construction contract provides for a legally binding agreement, both for the owner and the owner, for the contract executed to receive the specific amount of compensation or the allocation of remuneration. There are several types of construction contracts that are used in the industry, but there are certain types of construction contracts that are preferred by construction professionals. However, under these conditions, the CONTRACTOR and its guarantee are credited with the amount withheld, on each amount in excess of the contract amount and on any amount authorized for additional services. The discrepancies are generally divided into two categories, advantageous and harmful, the first being a negative change in the performance or quality of the work due to the client`s financial difficulties in improving the quality of work, reducing costs and timing and the second.
There are many reasons for discrepancies, but the main causes are generally due to design omissions, inadequate design, changes in specifications and scope, and a lack of coordination and communication between the parties involved.  There are several factors that contribute to the successful execution of a lump sum contract for a project, such as experience and confidence, management capabilities, communication capabilities, a clear work plan, a correct list of results, contingencies and shared responsibilities between the project team.