you maybe able to get someone who will do small repairs it depends how much water there is,is it an underfloor pipe leaking and can it be traced easy,is it in a heavy traffic area or under bath,radiator,i;ve just done such a repair,cutting click and floor underneath radiator under ply floor plastic tee joint and pipe leaking now repaired,replaced with plyboard then support timber battens underneath,wood glued i had a soft spot in floor pumped building foam thru hole drilled in ply gingerly heavy tool box on spot so as floor can'l lift,click floor cut to fit gap on chopsaw siliconed down,polystyrene paper blobbed both sides correct colour silicone,click cut to fit not clicked in place if floors completely soaked i;d remove click cut ply cure leak replace click floor.
vince m, November 2009