Washington DC/Baltimore

[question1]

Someone in my neighborhood recently "sold" their place for $8500--though it wasn't actually sold.  It just shows up this way as a sale record.  They still live there, it was never on the market etc.  I have seen this a couple of times on listings' histories.  Anyone know what this means? 

Thanks. 

[redfinlover]

Sometimes this happens when the owner sells to a family member at a Very  reasonable price,

[FranklyRealty]

Sometimes a partial interest can be sold, and the records will show the price but not the % of equity. Also this happens for parking spots that are sold apart from a condo.