...presumably the Government had the powers to take over any buildings they wanted, either for the duration or for overnight billeting.
The 'Defence of the Realm Act, 1914'
gave the government, or more correctly the 'competent naval or military authority and any person duly authorised by him' #
wide ranging powers for taking over property not just for billeting, but for any reason connected with the war effort; The act was, as would be expected, modified extensively during the course of the war with notifications given in the London Gazette
, but the initial version, from August 1914, can be found here Click
(# from the Act: "competent naval or military authority" means any commissioned officer of His Majesty's Naval or Military Forces, not below the rank of commander in the Navy or lieutenant-colonel in the Army, appointed by the Admiralty or Army Council, as the case may be, to perform in any place the duties of such an authority.
Possibly offering your property voluntarily, rather than waiting to have it taken, was the better option.