Walsh's ex-wife house, film location
Finally been able to track this down, with the help of the Itsfilmedthere web site.....
3899 Grace Lane Glenview Illinos
Google Maps has a great view of it.
The roof and driveway look the same, as does the house across the street.
And the address is seen over the garage...
Also, as Walsh and The Duke first pull up, the 2-3 houses to the right can be seen, and they match up from the film...