Most likely this person got their data from a multitude of websites, not just one.  

Think about the difference in value between 2006 and 2011, for example.We'll use the assessed value sometimes when running comps.

Paul area.I think this site is thus far an invaluable resource and I look forward to interacting with everyone and learning the ropes. 

I listen to the BP podcasts during my daily commute which has proven an invaluable way to spend otherwise worthless time. 

If you go to citi-data and view the demographics it reads something like: % of renters: 62% Median house value: $89,200Median property tax: $1,097...etcWhat this doesn't tell you is the west side is more family owned homes that can run upwards of $1million.

my rule of thumb is if the street has a center yellow line on it than I tend to look the other way unless it is an IMPOSSIBLY great deal to pass up. maybe busy streets dont have lines in your area, but point is that it is very hard to decide how much a major street effects the property. just because an appraiser or the county gives it a 10% reduction in value doesnt mean that you can reduce the price by 10% and assume that it will sell.

Appreciation is just a bonus if it happens, but I don't plan on selling either way, so I don't care if it goes up or down in value.  

Redfin essentially copy paste the MLS data.  

Obviously, you can estimate a cap rate from the data you have. 

I was looking at crime data for the past few months and I was shocked to see that white settlement had a lower crime rate than Hurst, Euless, or Bedford (mid cities areas that I consider to be better than white settlement).