Looking for Sale Price vs List Price data in BB area of CA

[David Siegel]

I am planning on buying in Sugarloaf in BB area of CA. I am hoping to find a free online resource that will let me track recent sales, compare list price to sale price, days on market for this specific area for home that had a sale price of $280K - $330K. I currently use Redfin and favoriting to gather insight into how long homes stay on market but its not easy to track the sale price to list price. 

For anyone else looking at this area, you know this was a very competitive market earlier this year. It appears to be cooling down a little bit. I'm hoping that happens more in later summer months. If I had more data and could map on a scatter chart list price to sale price variance over last few months or % of sale price over list price I think we would see a downward trend. Does anyone know of a software that can be used to gather this kind of data? Any advise is greatly appreciated! TIA!