With the manufacturing facility set to start later this year and the company has already announced that it is set to move all production of its Discovery auto to Slovakia before building its new Range Rover at an English factory.
The company warned that there may be some job losses in the United Kingdom as a result.
Monday's announcement comes after JLR said this year it will cut 1,000 jobs and reduce production at two of its English factories as demand for diesel cars slumps in the face of higher taxes and a regulatory crackdown.More news: Canada condemns US attack on Trudeau, country simmers
Jaguar Land Rover has said all new models will be electrified from 2020, though a spokesman wouldn't confirm whether the Range Rover models to be produced at Solihull will be made in all-electric versions.
The company, owned by India's Tata Motors, builds almost one in three of Britain's 1.7 millions cars but is producing its first electric vehicle, the I-Pace, in Austria.
There are 1,800 agency workers in the Solihull plant, out of a workforce of 10,000, the BBC reports.More news: Super Mario Party Revealed for Nintendo Switch
Alongside the retooling in Solihull, JLR added that its plant in Halewood would also be overhauled to prepare for the upcoming 2019 Range Rover Evoque.
"The decision to move the Land Rover Discovery to Slovakia and the potential losses of some agency employed staff in the United Kingdom is a tough one but forms part of our long-term manufacturing strategy as we transform our business globally", Jaguar Land Rover said in a statement quoted by Bloomberg on Monday.
'The potential losses of some agency employed staff in the United Kingdom is a tough one but forms part of our long-term manufacturing strategy as we transform our business globally, ' JLR said in a statement. The biggest plant in the company, it now employs 9,000 people.More news: President Donald Trump says he won't invite National Basketball Association champion to White House
The group saw pre-tax profit slump to £364 million in the three months to March 31, down from £676 million in the same period previous year. It also blamed uncertainty over Brexit and vehicle taxation. 'This multi-plant approach mirrors the strategy taken for Range Rover Evoque and Land Rover Discovery Sport at our plants in Halewood, China and Brazil, ensuring our manufacturing output is able to keep up with strong consumer demand, ' said Wolfgang Stadler, global manufacturing director. The next-generation Defender is also set to the built there, given its relationship to the Discovery's underpinnings and the lower production costs.