I would like to know why you are looking into basement waterproofing? Are you in need of a sump pump, maybe a french drain? or are you totally renovating the lower level? was it a pre-existing condition? I do have a terrific mason who has installed sump pumps and french drain systems for me for years and would gladly share his info with you. My office is 781-826-9300 and my email is MaryBeth@TradeWindsREaltyGroup.com if I may be of future assistance.
You can contact some basement specialist companies that do this for a living. They can install; sumps, pumps, french drains and offer all sorts of membranes to keep moisture out. Usually, simple gutters with working downspouts suffice (Cheap!!!!)