It would be a little tougher to do and time consuming using public information (and Wake Gov rounds to the nearest $500--you'd need the name of each street, then would have to look for similar sq. footage and agest to find truly comparable homes). I can do a CMA (comparative market analysis) using our MLS software and pull homes in a certain zip code, certain timeframe, certain square footage range, certain age, lot size range, neighborhood, area, sub area, # BR/BA, etc. in just a few clicks--as long as they were MLS listed properties. It gives you the average days on market, list to sale price ratio, and other info. A Realtor can also pull up each closed listings to see if there were financial concessions such as closing costs and home warranties included w/ the sale as well, but the general public doesn't have access to that info. If you're curious about the current market value of your home, you can touch base w/ a Realtor or pay to have an actual appraisal done on your property by a licensed appraiser (usually around $350-450+ depending on sq. ft.). The only other option I can think of would be to figure out who the listing agent was for each property and call around... but that's pretty time intensive as well.
Let me know if you have any questions. Thanks and enjoy the rest of your weekend! Wendy