Proper foundation of any building is probably most important phase in the construction. Value of bject can be huge, decorating can be superb, but if some bulding is located on bad foundations then is almost worthless!
All other elements of the building, and even the basement walls, can be restored and rebuilt if necessary, but fundamentals cant!
This is not a phase where you can or should save money, and we in Stanoinvest know that this phase won't stand failures.