Recommended Resources:

• HUD Handbook 4150.2 - Valuation Analysis for Single Family One- to Four- Unit Dwellings
• HUD Mortgagee Letters
• Fannie Mae Appraisal Resources
• asc.gov - Appraisal Subcommittee - Oversees the appraiser regulatory programs established by individual States
• GoogleEarth.com - A satellite-imagery mapping product providing street level property views.
• FHFA.gov - Official site of the Federal Housing Finance Agency, which tracks and reports the House Price Index (HPI), a scale for determining rising and declining values by geographic location.
• Wikipedia link to appraisal definition