The phrase "affiliated grounds" is correct and usable in written English.
It can be used in contexts where you are referring to locations or areas that are associated with or connected to a particular organization or institution.
Example: "The conference will be held at the university's affiliated grounds, which include several lecture halls and outdoor spaces."
Alternatives: "associated premises" or "connected locations".
Heck, women weren't even allowed to compete in various sports until recently: women's football was banned by the FA on FA-affiliated grounds until 1971; Olympic women's marathons were banned until 1984; and the women's ski-jump was kept out of the Olympics until 2014.
For a more expressly, intentionally grown-up milieu that's easier on the ears, there's the Bar at the Lambs Club, a second-floor lounge of sorts that's affiliated with the ground-floor Lambs Club restaurant but stands entirely on its own, with its own entrance and (abbreviated) food menu.
The physical establishment of the Observatories, as well as their human and material capacity building has been supported by the CSOs with which they are affiliated on the ground.
In fact, McLean is affiliated with Harvard, and its gracious grounds reflect that.
Father Doyle is among those working to restore Camden's neighborhoods, and last month an organization affiliated with his church, Sacred Heart, broke ground on a new community theater.
In Iraq, Washington at least has the support of allies on the ground, including the army, affiliated Shiite Muslim militias and the spirited if ill-equipped Kurdish peshmerga force, not to mention a functional government to work with.
Teklife is now largely affiliated with Steve 'Kode9 Goodmann's ear-to-the-ground Hyperdub label – a perfect home for artists intent on pushing bass heavy music to its limits. .
The school, affiliated with the Conservative movement of Judaism, will break ground in Hartsdale this summer for the movement's first high school in Westchester.
(Mr. Kiffmeyer was the first building instructor for Community Rebuilds, the nonprofit sponsoring our current build, when the group first got off the ground, but he is no longer officially affiliated with it).
Sunni Muslim jihadists affiliated with al Qaeda and the Islamic State have gained ground in southern Yemen since the coalition began the bombings.
