Which are the most common forms of the JCT contract and when would you use each one?

The most common forms of the JCT contract family as well as their use, are summarised on the table below:

JCT Form	Used when	Not used when
Standard	Intended for large or complex construction projects
Intermediate	Appropriate for simple construction projects that require all the recognised industry trades and skills with detailed contract provisions but without the requirement for the installation of complicated building services or other specialist work. Can be appropriate for projects that are procured via both the ‘traditional procurement route’ (or ‘conventional method’) and can be used by both private and public employers.
Minor Works	The project is fairly simple. The project should last no more than 12 months. The client is responsible for procuring the design, including drawings, a specification or work schedules. Or when the contractor is responsible for designing specific parts of the works (Minor Works Building Contract with Contractor’s Design).	The project is more complex. The project design includes bills of quantities. The project has detailed control procedures. There are provisions to govern work carried out by named specialists.