To Presume that lead-based paint or lead-based paint hazards are present is an option to conducting an evaluation to determine the presence of lead-based paint hazards or lead-based paint. 

Presuming will affect the scope of work required:

• Where interim controls are required, if lead-based paint or hazards have been presumed to be present, standard treatments are to be performed on all applicable surfaces.
• Where abatement is required, if lead-based paint or hazards have been presumed to be present, abatement is to be performed on all applicable surfaces.

Factors To Consider When Deciding Whether To Presume Or Test:

• Age and Physical Condition of the Property. Older buildings, especially those built before 1950, are more likely to have lead-based paint. Properties in poor condition are likely to have conditions that may be hazards if lead-based paint is present.
• History: The likelihood of the presence of lead-based paint can be based upon knowledge of the use of lead-based paint in housing in the community.
• Cost: For a small rehab job, such as repainting one room or rehanging a door, it may cost little to do the job safely. For a large job, there could be significant costs to performing interim controls or abatement on a surface that did not have lead-based paint.