BEST ANSWER
Hi Gemii,
One of the most common and reliable methods is mentioned in a couple of the previous answers. And that is to get yourself a Professional Buyer's Agent to represent you, to advise you on what comparable properties have sold for in the very recent past, to advise you on what current comparable properties are on the market for, and to formulate an offer together with you for a property you find that you like very much and also to position and negotiate the offer to you for your best advantage. Professional real estate agents are just that: professional. And schooled and licensed in helping both buyers and sellers come together at optimum pricing.
Trying to determine value by a non-professional, either on the sale or buy side, is very, very risky when either side goes forward without the help of a seasoned professional. One thing that a professional adds to either side is a non-emotional perspective to truly offer the client non-biased recommendations.
All the best to you in whatever you may have found so far or in your continuing search. And, if you haven't done so yet, seriously consider interviewing and deciding on one Realtor to help you through your search, decisions, and negotiations.
Regards,
Ralph
Sat May 30 2009, 12:42