Both the Urban Institute and Market Watch reported on recent data put out by the Federal Housing Finance Agency that demonstrates the appreciation of manufactured housing in direct relation to traditional site-built housing.

What are your tips for cleaning it?

I've been procrastinating on doing this post, despite spending many hours reading through the site and listening to podcasts 1 through 45 as of today, constantly given the constant encouragement from Josh and Brandon that is essential to jump right in..

Search the site, there's plenty of forum posts on that exact topic.

Cleaning?

You can live in a great area for investment and still invest far from home if you want to leverage others.As far as where to pick, we use sites like Census.gov, Bestplaces.com, deptofnumbers.com to compile some data on quality cities. 

@Tito Huynh First off, way to go on setting up a lead propeller site and getting some leads!

I hope this helps, and if you have further questions, please feel free to PM me or others on this site.

What are some good sites for determining value like this?

Great that you joined the site!