Looks very much like the small trees (that often get used in public places) that have really showy bracts of purple flowers late spring. I think they are not a long lived tree. I cant remember the name , I will be back.......
(edited to add) Melia Azedarach is what i'm thinking of, wrong flowers not showy purple bracts but small lilac flowers that are very pretty if you get a good display
If it is a Melia Azedarach I'd be cautious of the words, "Poisonous to humans and stock, seeds prolifically and can be a weed, and grows up to 30 metres high in favourable conditions". Other than that it can be a nice specimen tree!
However.......it might be something different!
Perhaps the previous owner might know what it is. Given the stump diameter(?) of 40 cm, it was obviously a fairly serious tree, not just a bush, and s/he must have had a reason for cutting it down.