"Subject to getting a satisfactory attorney review of offer"

[Edward A.]

Is this an effective contingency to have on a purchase agreement offer?

I'd like to get an attorney involved with reviewing all of the documentation pertaining to a purchase agreement, but not until after the seller has accepted. Is this a common contingency used? Can an attorney completely overhaul the offer once they review? Obviously I wouldn't want to make big changes if the seller already accepted, but I'm just wondering what kind of freedom I have here.