There are three main types of contract that use the SIA Conditions, namely: the Lump Sum Contract; Measurement Contract; and. Minor Works Contract.
On the basis of formation, the types of contracts are express contracts, quasi-contract, implied contracts, and E-contract. Based on performance, contract types are executed contracts, unilateral contracts, executory contracts, and bilateral contracts.
The most commonly used standard forms of contract in Singapore are the Singapore Institute of Architects (“SIA”), Real Estate Developers' Association of Singapore (“REDAS”) and Public Sector Standard Conditions of Contract (“PSSCOC”) standard form contracts.
10 Different Types of Contracts Type of ContractEveryday Use Implied Contracts Common in everyday transactions like dining out. Express Contracts Standard in formal business agreements. Simple Contracts Used for straightforward services or transactions. Unconscionable Contracts Often challenged in court for fairness.10 more rows •
The JCT Standard Building Contract is designed for large or complex construction projects where detailed contract provisions are needed. Standard Building Contracts are suitable for projects procured via the traditional or conventional method.
One of the unique features of the Singapore Institute of Architects Articles and Conditions of Building Contract (“the SIA Contract”) is that the contractor is assured of periodic valuation of works carried out and amounts expressed to be payable in the interim certificates.