Contract administration is the work done before a contract is signed into effect and contract management covers everything done after signing. General contracting and construction management are methods for managing a construction project.Contract management in construction is the process of overseeing and administrating contracts between various parties involved in a construction project. The main difference between these two roles lies in the timeline. The contract administrator will supervise the efforts before a contract is signed. The only difference between construction management and many contracting is where you spot the construction manager. Unlike general contractors, construction management services contract with the owner for a fixed fee. Contract management focuses on contract implementation once it has been executed. A contract manager keeps an eye on key deadlines and deliverables. A construction management contract is a form of 'cost plus' engagement.