1 - For bigger picture reports - go to http://www.mris.com, in the left corner, choose NEWS, then Market Statistics. July's #s just came out - you can run by county and by zip code.
2 - For smaller picture stuff, go to my web site and click on Market Snapshot from the home page - put in your real address and your real email - it will email you an automated report based on the information you put in.
If I can help you any other way, please feel free to email me firstname.lastname@example.org
If the Silver Spring market is anything like ours here in NW Arkansas, there are lot fewer buyers on the street this year, compared to last year. People are still uncertain about the economy. With a lot of foreclosures and short sales, there are a lot of "good deals" to be had, so regularly priced homes are having a hard time.
You don't mention if you have it listed with an agent or not. If you have it as a For Sale by Owner, I would suggest you get an agent if you really need to sell. If you don't need to sell now, wait a year or two. If you do need to sell, an agent will get your home in the multiple listing service. Most buyers now have buyer agents, and they look in the MLS for homes to show their buyers. Your agent also will have access to better data on recent home sales so your home can be priced appropriately.
During the craziness of the past several years (seller's market) there was a shortage of inventory and a lot of buyers looking for homes. In that environment, selling your home "by owner" was not too difficult. However, with the current buyer's market, there are too many homes currently listed by realtors for buyer agents to even consider looking at FSBOs.
Hope this helps.