This does vary depending on what your brokerage requires.

Couple of things, you may not be able to convert the garage into a studio apartment, that depends on your zoning, and that goes for @Judy P. idea about splitting the property into two lots, it all depends on zoning and what you are allowed to put there, but if the typical lot is an acre or less, i think she has a good idea, i wouldn't sell just yet until you did some research. what town do you have the property in ?

When I graduated rom college (in1980) I got a real estate broker license and kept it active for about 30 years.Marketing is real important in real estate depending on what you choose.  

It will only be $20-$45,000 depending on what the appraisal says.

Whether or not that interest rate is reasonable depends on the buyer's qualifications.  

I would assume the deal flow depends on the neighborhood and what your goals are.

It depends on the numbers.

Depends on where in the state you are looking.  

Also depends what stage you are in the game.

First thought is that this depends on your market.