A turn-key or a turn-key project is a type of project that is constructed by a developer and sold or turned over to a buyer in a ready-to-use condition.
Turn-key refers to something that is ready for immediate use, generally used in the sale or supply of goods or services. The term is common in the construction industry, for instance, in which it refers to the bundling of materials and labor by sub-contractors. A \"turnkey\" job by a plumber would include the parts (toilets, tub, faucets, pipes, etc.) as well as the plumber\'s labor, without any contribution by the general contractors.
This is commonly used in motorsports to describe a car being sold with drivetrain (engine, transmission, etc.) as a racer may prefer to keep the pieces to use in another vehicle to preserve a combination. Similarly, this term may be used to advertise the sale of an established business, including all the equipment necessary to run it, or by a business-to-business supplier providing