I want to know that the cosigner can afford the rent on their own if the tenant fails.

If this is what concerns you hire a buyer's agent because you are focused on the wrong things altogether.

Look for your states offer to purchase contract online or contact a realtor to get a blank copy. review the agreement to be sure assignment is not expressly excluded. if there is nothing excluding assignment from the contract then writing the words "/And or Assigns" after the name or company's name on the buyer's line should be sufficient.Good luck!

Most flat fee listings are willing to work with a buyer's agent and pay the buyer's agent commission.

Certainty of a buyer's ability to close is always important, but it's even more important right now due to the market conditions. 

Consider hiring a buyer’s agent to represent your interests.That said, properties with underperforming tenants could present an opportunity.

Bryson: Seller Financing OfferPurchase Terms1.Purchase Price: $215,0002.Down Payment: 20% of the purchase price, equal to $43,0003.Financed Loan Amount: $172,0004.Interest Rate: 6.5% per annum (fixed)5.Initial Amortization Schedule: 12 years (144 months)6.Balloon Payment:•At the end of 24 months, the buyer will make a balloon payment for 50% of the remaining balance of the loan.

In a market like this where properties are sitting a bit longer, buyer demand is kind of stagnant, many appraisals have been coming in lower than anticipated.

I've been reading more about subject to and here's what I've learned:-Good for sellers who are off market-Have low to no equity-Have a mortgage with a low interest rate (less than 5%)-Be absentee or out of state (vacant property, or have a tenant)The buyer would then take over the mortgage payments, and have the seller sign the deed over to the buyer.

Know this: the #1 reason why landlords fail - failure to manage to the lease (source:  American Apartment Owners' Assn).