Where the local limits of jurisdiction of Courts are uncertain, the place of institution of suit shall…

Section 18 CPC applies where "it is alleged to be uncertain within the local limits of the jurisdiction of which of two or more Courts" immovable property is situate; any one of those courts, if satisfied of the uncertainty, may record a statement and entertain the suit. Section 16 fixes the place for suits about immovable property, section 17 covers property within the jurisdiction of different courts, and section 19 covers compensation for wrongs.