EPA - Lead in the Home
EPA - Radon Basic Facts
EPA - Guide to Mold
Minnesota Department of Health - Limitations of Mold Testing
Inspectadelphia - Lead
Inspectadelphia - Knob and Tube
Inspectadelphia - Plaster and Lath
Philadelphia Rowhouse Manual
Spring Garden Historic District Guide for Property Owners
Pennsylvania State Building Codes
Atlas - Permits, Licenses, and Inspections for Philadelphia Addresses
Contractor Permit Lookup
Construction Permit Fees Chart
Philadelphia County Building Codes
