Water infiltration causing the leaking in the house is coming from a failed roof flashing.
The excessive cracks in the stucco are another result
of roof leaking and not the cause of the problem.
Almost all townhouses built in Reston, Virginia during
the early 1970's have bad flashing.
||In this case the
finish is flush with
the end wall causing water damage.
In some cases the finish sticks out past the edge of the flashing.
This flashing is easy to correct.
It is just a matter of drilling out the rivets and extending the bottom flashing out past the face of the end wall abiout 3/4" or so.
Another typical Reston, VA townhouse.
For more about Reston flashing, please click here: