Before this project, we had severe cracking around our front window resulting in it and the front door unable to close properly. At an engineer's recommendation, we requested quotes from several contractors to install screw piles along 2 sides of the house with weeping tile and waterproof membrane. The results have held up well over 4 years now. They started and finished on time, as well as doing an extra excavation to replace our sewer pipe from the house to the city line while they had everything else dug up next to it.
The lack of top marks is due to the fact that we believe the screwpiles were shorter than the engineer's report suggested, though he seemed to be in cahoots with them and OK'd it. The workers were quite rough which we try to avoid with little children around. Out of the four contractors that we got quotes from, GCA was our second choice. The #1 that we wanted was booked up for the whole season; and the others we had bad 'gut' feels about just from talking to them; so overall I don't think we did too badly.