Fairfax County Home Page
http://www.fairfaxcounty.gov/

Fairfax County real property/tax map
http://icare.fairfaxcounty.gov/Search/GenericSearch.aspx?mode=PARID 

Prince William County plan review status
http://www.pwcgov.org/apps/landstatus/

Prince William County real property assessment
http://www4.pwcgov.org/realestate/LandRover.asp

Stafford County planning office
http://www.co.stafford.va.us/planning/ 

Loudoun County land development
http://www.loudoun.gov/b&d/landdev.htm