This gives me time to locate a buyer and allow them to inspect the house, or inspect it and get detailed numbers myself to present to buyers.

At the end of leases sometimes tenants will beat up the unit and you will have to fix them up to present to your next tenant.

To the extent it is, the contributions for that year can usually be included in income, but in this case that won't be enough on top of 100k to hit the threshold, unless there are other forms of income, and some other types of non-cash or deferred income can also be counted. 

Shutting off the interest accumulation during a Deferment period when the Deferment Agreement they originated discloses that Interest will continue to accrue during the deferment period.  

The value of a license is often said to be present in reduced commissions and access to the MLS and other tools. 

Typically they'd put together a package to present it to the lenders professionally and help get you the absolute best deal.

On $250K at 4.375% at present, a drop to 3.0 will see my monthly drop by $200, and interest reduction of $300 on the first repayment.

I know it is a bit tricky since they are friends, but if you present it nicely to them as more of a formality than anything, they would understand.

Be ready to jump when the deal presented itself.

We have a nice LOI prepared but I am trying to present myself / deal as professionally as possible.