One of the biggest confusions I've had so far is market analysis and what to look for and where to go find the data at.

Hi James, Blair is correct in that the agent that sold you the home should be able to provide you with a Market Analysis that shows you all of the recent sales in the area.  

Or should I ask them to apply separately, and then when we go to sign final lease documentation, put them both on the lease with a 12 month agreement?

I strongly recommend you stay conservative with your Analysis.

@Harrison CookYour post kindles lots of questions.In the "good old-days" most heating systems were vastly oversized for the building they were heating - energy was relatively cheap, insulation was non-existant to poor ... so it was easier and safer to {drastically} oversize.Today, while energy {in North America}  is still relatively cheap for the moment,  we have a much better understanding of how to make buildings more efficient {though you might not think so looking at the construction industry in the U.S.A. and Canada}  and there are often more cost-effective measures than simply replacing an old, over-sized heating plant with a new, over-sized heating plant.You really need to - or at lease should -  perform a heat load analysis to properly size your heating system, a component of which, is determining the rate of heat loss of the building envelope.  

Hi BP,So Zillow have finally entered the buying and selling property business.

The only thing I see in your analysis that struck me as somewhat odd, is that you are basing your analysis off SFH. 

I read the ultimate guide about a year ago and am finally ready to take action.

The loan assumption department for the mortgage company finally emailed me the paperwork to complete the assumption application. 

Of course the final answer would come from a court but this happens frequently and can easily be avoided.