Make sure that your lender is using rental income to help you qualify on the new property.Now, if they are telling you that they are using the rental income but they still can't qualify you - then why not?  Are

But if not, are you renting a place?

Also make sure that any information is given in writing and notarized if needed.

If not, are they isolated so that you can get a close match to the current colour and just paint a few walls? 

For example, perhaps they are saying you are limited to 3 documents requiring notarization, but unlimited on other documents requiring basic signature.

I would not do work without at least having a notarized and recorded exclusive option to buy. 

First thoughts are to be added as a secured interest on the title, coupled with a notarized agreement.

Perhaps, you can cover yourself from potential liability by having your buyer, and the seller sign (notarized) acknowledgements listing the potential problems that may result.  

What kind of services could a paralegal working under an attorney provide for a RE office that is helpful beyond notarization of documents and filing?

In my state any agreement longer than 12 months needs to be notarized.