As the subject title says, we're from Longmont Colorado just half an hour north of Denver. 

I've heard of people putting a provision on a seller's document that it is subject to inspection.  

If I'm using the TREC resale contract (Texas), how do I write the deal to be "subject to" the existing mortgage.  

These banks can offer products called portfolio loans, which are not subject to the same regulations as "conforming" loans.

One way around that is learning how to acquire properties "subject to" or through owner financing.

One month before the scheduled end of the lease between these parties onthe said property (including any extensions as provided in writing by the Owner) andprovided the lease between the parties for the same property is not and has not been indefault, an Option to Purchase Agreement for the subject property will be granted inwriting and delivered to the lessees.

I'd like to outsource the rehabs to contractors and consider their wage in terms of the "total investment" of the subject property.  

But it doesn't mean you cannot negotiate terms as to allow you time to sell subject property.Assuming the numbers are correct in your post...

If you don't want them to maintain responsibility for maintenance, I would recommend you purchase the property from them subject-to the existing financing.

Maybe there's a flat fee involved to preserve this rate.Just a thought, this maybe unorthodox as I understand that everyone's subject to a a national change in interest rates.