Watch out! EPA is auditing big money funds which buy houses, and then the contractors they hire to work on those houses. They are specifically working on enforcement of the lead Renovation Repair and Painting (RRP) regulations.
Have you read RRP (go to www.eap.gov
Do you have a good consultant to perform inexpensive and rapid XRF inspections to find where there is or is not lead based paint?
Do you know that in most places, there is a certification or license for lead consultants, so not just anybody can perform inspections/testing?
Do you know the penalties can be massive?
Do you know most contractors are being caught on paperwork violations, not "in the act?"
The inspections yield good news. Half of the houses built 1960 to 1978 have no lead-based paint, the other half very little. It sure would be a shame to be fined big for work on buildings where no lead-based paint is present! Usage of lead in paint dropped way off in the 1950s, so some built then also have very little. In older areas, there is more lead in fancier neighborhoods, but houses with it everywhere are rare. RRP requires assuming all paint is lead-based and handling it accordingly (all trades, not just painters).