This feature lets you link the register transaction to its supporting ducomdntation. 

When I asked about it he said there was a "insurance policy" like feature where if the rate goes down greater than a quarter point it will adjust the loan.

You can also buy lists from companies like list source and there are some REI software companies that have a cash buyer search feature.

If the rent can be increased based on energy efficient features, what percentage of increase would be possible?

I like the search features: https://www.biggerpockets.com/searchAlerts can be really helpful too: http://www.biggerpockets.com/alerts

Episode # 9 of the podcast featured, @Ann Bellamy.

There are alternatives to RealeFlow, but if you are specifically looking for something to help you with estimating rehab costs here are the features I would look for:#1 Estimate Starter Templates/Databases - Do they provide Estimate Starter Templates & Database pre-built with common repair items and unit prices that can help you get started?

I know that making repairs and adding neighborhood-friendly features is of principle importance for raising the value of single-family residences, while increasing cash flow is the bottom line for raising value on properties with 5+ units.

Another thing that's really annoying with Zillow is they seem to have a problem with properties not bought and sold via MLS.With MLS sold properties they seem to be able to carry most of the information correctly.But with private sale they do not have info on them and if you claim it as your property and edit the details, features, uploaded photos, in about a month or so this information will be erased automatically. 

This is a great forum with very knowledgeable members that will help to guide you in the right direction.If you are looking to connect with other members near you, or want to learn from people in a specific area you’d like to invest in, or have a desire to find people interested in certain topics, you could use the search feature here: https://www.biggerpockets.com/search/usersI really like the alerts feature that can quickly guide you to current topics that might interest you: http://www.biggerpockets.com/alerts