Anyone know the name of this kids movie?

i think it might be disney, from the 80's or 90's. it's about this old guy who talks to these leprechauns and there's something to do with his son. he's friends with leprechauns i think and there's something about the leprechaun's homes getting torn up for construction or somethingand he has to help them save their homes. definitely not darby o'gill and the little people, i know that movie by heart.