I dont know what specific records there might be of these types of houses... If they were for British army servicemen and owned by the Army I presume they would have been handed over either to the Irish Army along with the associated barracks, or to the state at Independence in 1922. If they were army property maybe there might be some sort of record of that ...although no idea as to where that might be... Dublin or London ?
If St. Clares' park was for example was the name of a terrace of smallish cottages, in the Seafort Gardens area, I suspect they might have been redeveloped or renamed when the beach road was constructed in the mid 1920s.
Shane