You can search right here on Trulia for homes that have sold. On the left search selection field, enter your zip, select the price range you want (or search for all - it's a high number for 21703!) and select only recent sales (near the bottom). I just checked the Multiple List Serve (MLS) that realtors use for 6746 Brace Court, and the sales price reported on Trulia is what it sold for.
Feel free to use my website, http://www.2hdb.com/petert, to locate prices of homes for sale in your neighborhood. If you want to reach me, my contact information is on my site.
It sounds like you may be contemplating on making a "move "in the near future. It is good to have your :ducks in the row" and it looks like you are trying to do that, this equation should include a Realtor that will look out for your best interest in representing you in the transaction. Interview a few Agents and choose the one thay you feel comfortable with.
If you would like the most accurate comparitive sales for homes in your neighborhood, the realtor database is the most timely and accurate source.
I would be glad to send you this information if you would like. I am familiar with the homes in the 21703 zip code and would only need you to tell me which neighborhood you live in. Also is it a single family, townhouse, or condo.
Oh! And the best part is-- they would probably do it for free! Just ask for a CMA!