Types of Inspections:

Termite and wood boring insects
Radon and EPA environmental issues
Flood plain determination
Oil heat, buried and unburied fuel tanks
Air conditioning / furnace
Carbon Dioxide
Home inspections, disclaimer vs. disclosure
Septic tank / well
Water quality
Roofing
Engineering inspection
Chimney and fireplace safety issues
Final walk through
Soil conditions
Wet basements

Know the Financial Situation:

Pre-loan approval
Mortgage finance contingency
Appraisal
Private Mortgage Insurance (MIP or PMI)
Hazard Insurance
Financial health of settlement attorney
Sellers / Buyers title insurance
Warranties, source, and cost
General warranty deed; special warranty deed

Condominiums / Home Owners Association Information:

Association dues
Rules and Regulations for fences, buildings and other items
By-laws and Restrictions of use.
Owners Associations

Other Research You Should Consider:

Potential and future road construction
Easements and restrictions, municipal or private
Pending or future zoning changes
School Statistics or Crime statistics
Proximity to land fills, police station, fire station
Tax Records