Roberts and Watson purchased two dairy farms from Envirowaste in December 2003 and began the long task of getting resource consent to build the Motorsport Park.

Some of the circuit was built on swampy ground, and Fraser Thomas Ltd, the engineers on the project utilised modern pre-loading technology to ensure that the land would be stable enough to support a race track.

The earthworks were carried out by Ross Reid Ltd, who purchased laser controlled graders to ensure an accurate build of the circuit.

In January 2010 Hampton Downs was officially opened by the Waikato District Mayor, Peter Harris, at the Bruce McLaren Festival.

Hampton Downs has become a major venue for local motorsport without the restrictions imposed by tracks that share the use with the horse racing fraternity like Pukekohe Park Raceway.

In 2015, Tony Quinn purchased the complex and work started almost immediately to complete the circuit extension, based closely on the original plans.

Although the event is traditionally held at Pukekohe Park Raceway, the 2020 race was scheduled for Anzac Day (25 April), which is forbidden under local legislation.

Downforce will run driver training (instructed by A1GP veteran Jonny Reid) and corporate events at Hampton Downs.

[6] The Hampton Downs circuit was immortalised in the rFactor game by way of third-party generated content based on the early plans made before construction was initially complete.