Two dead and one dying Rowan trees within 40ft of each other.

On Hawkhill Drive in Leeds 15 we have plenty of towan trees, however some are dead or dying. Last year one fell over, blocked the road and hit a car. There are 3 within 40ft of each other, two are dead and one is dying with less than 50% foliage. The two dead, one is now a vine covered trunk and moves at the base, the other overhangs a 99 year old mans garden anf public foot path. This tree will loose branches in high winds as others on the street have done. As there are three close together, we thought it would be more cost effective to deal with them all together. We would like these trees replacing if possible. Thank you for your consideration.