The future of two 130-year-old buildings falling apart along East Colfax Avenue is in limbo as tensions brew between the developer, the city and neighbors. The once-stately mansions at 1600 and 1618 E. Colfax Ave. looked more like the facade in a haunted-house movie during a visit last week. Pigeons flew out from between the jagged glass of broken windows rimmed in soot from a blaze in March that Denver firefighters had to extinguish from outside the connected structures due to pre-existing deterioration. Portions of the roof of the long-vacant buildings have caved in leaving the interior exposed.