you  need an experienced real estate attorney not a web forum 

There are hundreds (probably thousands) of threads and blogs dealing with seller financing.

Look on BP blogs for more details on this topic.

Here is what I found on lease cap: http://howtorentyourhousenow.com/blog/rental-utility-cap-what-is-it-how-can-it-save-me-money/"The tenant rents a house for $1,000 inclusive with a $200 cap.

Ironically I posted a blog in BP last Friday that have some common aspects around vetting a sponsor and discusses common fee structures.  

From the blogs to the podcasts to the posts, and the ability to ask specific real estate questions and receive fast answers, the resources found here can turn you into a well-versed real estate investor.Most real estate courses, coach sessions, guru seminars are scams, people using their marketing skills to pocket the everyday person's hard earned money.

I tell him about all the podcasts I listen to; blogs I read and let him know about both the risks and rewards.

So I am doing probates and I have a name, is there a web service that will tell me if they own real estate anywhere is the US ?

Those are pictures of general web searches (google images).

I joined the site and I've been hooked since, reading different blogs and posts.