'makeshift facilities' is correct and usable in written English.
It is usually used to refer to a temporary arrangement of materials or objects, so it can be used to refer to anything from a makeshift shelter to an improvised solution to a problem. For example: "The villagers had to make do with makeshift facilities while they waited for the aid to arrive."
United States authorities are holding dozens of detainees in makeshift facilities in Afghanistan.
Early in the fight against Al Qaeda, agency officials relied heavily on American allies to help detain people suspected of terrorism in makeshift facilities in countries like Thailand.
Named for the Nickelodeon (ersatz Greek for "nickel theatre"), which opened in Pittsburgh in 1905, these theatres were makeshift facilities lodged in converted storefronts.
There remains something of a cult of personality around the showy offshoot of basketball known as streetball, a pastime marked by elbows-out play, a casual commitment to the rulebook and makeshift facilities.
The country has been struggling to house refugees in makeshift facilities even though the number of arrivals has dropped dramatically since the deportation deal came into effect on 20 March.
The Kennedy Center, the nation's only formal tribute to that President, at least gives Washington a showcase for the performing arts after a history of embarrassingly makeshift facilities dating back to the city's beginnngs.
Until January, the United States housed Taliban detainees in a makeshift facility at Bagram Air Field.
Six years into Red Bull's reign in New Jersey, the team has a new stadium but still trains at a makeshift facility it rents from Montclair State University.
The couple were held first at Tanforan Assembly Center, a makeshift facility at a San Bruno racetrack, then at the Topaz camp in Utah, where Ina's brother, Kiyoshi, was born, and then Tule Lake.
Many of those who fled ended up in Baharka — a makeshift facility on the outskirts of Erbil which is centered round an abandoned warehouse housing separate dwellings sectioned off with plastic sheeting.
Scores of prisoners — perhaps hundreds — were executed at makeshift holding facilities like the one I saw, for no apparent reason.
