This can complicate claims payments for the named insured/tenant. 

So it could take a decade to get to todays market rent. 2) it’s almost impossible if not impossible to non-renew a tenant, especially if you’re not an owner occupant. 3) As a seller, even if I could remove paying tenants I never would without a non-refundable payment from a potential buyer that covers all vacancies for 6 months if they fail to complete the purchase. 4) You MIGHT say as a buyer that’s worth it.

Current value of paid off property is roughly 350k , looking to borrow 75k-100k down payment to  purchase a 275k commercial property.

Don't accept ANY partial payments.

Gave me the monthly payment and I checked it against a mortgage calculator and it's exactly what that said. 

Since they are considering renting their properties out, sell them on the concept of getting consistent cashflow from you - without the hassles of being a landlord.You will then need to make sure you can make those monthly payments EVERY month in addition to do remodels.

If not, you may have to qualify with the full mortgage payment against your debt to income ratio, including the new home that you are looking to purchase.From a tax standpoint, you may want to speak with @Natalie Kolodij. 

The key will be to set up terms so your monthly payment works.

Know that every long term lender will require a survey and if something comes up on it when you are trying to sell or refi, you could get stuck in hard money without an easy or quick way to get out.Is there a pre-payment penalty?

Most hard money lenders require 10-20% down payment of the purchase price or total project cost.Holding Costs During Rehab: Yes, you'll need to cover carrying costs, including hard money interest, utilities, taxes, and insurance.