Laburnum Trees
I love laburnum trees, and would happily have one or two in my garden, but somebody told me that if I came to sell the house I'd have to chop the trees down as unlikely any family with children would buy it as the trees would put people off. I know laburnum tree seeds are poisonous as I grew up with one in my garden and remember my mother telling me not to eat the seats when I was about 4/5 years old - she told me although they look like pea pods they weren't and I shouldn't eat or play with them. Suited me as I don't like peas!! Are peoples fears of laburnum trees that bad? Surely parents these days have the same common sense as my mother did and just warn the children off. And a laburnum tree wold be the least of their problems - they would also have to avoid the Acotnitum, Digitalis, Solanum dulcamara, and Narcissus then, and keep away from the pond whilst they're at it! 
Posts
fears are terrible, commonsense is over-ridden by alarmist journalism, people have become too distanced from nature and are frightened of plants, insects and goodness knows what else.
In the sticks near Peterborough
Hi Tim. You are right. A little too much scaremongering about laburnum and where that story evolved about you having to chop down the tree when you come to sell your house - nonsense! If it were me I'd plant the tree and be damned!
http://www.gardenersworld.com/forum/plants/laburnum-tree/981137.html
Have a read through this Tim. It should answer your questions...and a few more.