In general, the value in 2003 and the value today- in Mass- is about the same.
Over the past 2 years, your home value may have decreased by about 20-25%, but from 2003 through 2006/7 it likely increased that 25% or so.
I'm not an appraiser- these are just rough numbers here.
If I can be of any further help, please let me know. Thanks, and good luck,
There are so many factors tha need to be considered that it woud be impossible to provide you with accurate information based on what little we know. A major factor is how "hard hit " your location was for decreasing home values.
Your best course of action would be to contact an appraiser and pay for a professional appraisal. This would leave little doubt for the approximate value for your home at the time of the appraisal.