I have high regard as a contractor for the web site of Tim Carter www.askthebuilder.com for resources like you are asking for. He has prepared cheat sheets for homeowners wishing to purchase roofing, gutters etc. I think your expectation of a state requirement for a basement waterproofing contractor to operate in New Jersey is optimistic. I would look for
1- Proof of workmans comp & public libility insurance
2-State License
3-Refernces
4-Membership in Better Business Bureau (A or A+ rating)
5-NO downpayment
Remember only guarentee,, Death & Taxes
ps There must be at least one year warranttee on workmanship & whatever period you can negotiate on the water control system
Source: http://heartlandmastershiel..
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