If the average cost to add a second bath to a 3-bedroom home is $20k, they might assign a certain weight to each approach and value a second bath at $16 to $18k (somewhere between the market value and the cost), for example. 

As we all know, the goal is to lessen our tax burden as much as possible.

At this point you’ve already written an offer that was accepted by the seller  Preapproval letters hold more weight when making an offer than prequalification letters.Hope this helps!

Referrals from other investors are definitely worth their weight in gold! 

I would ignore all of her "add on" requests at the moment and ask her to provide her dog's photo, breed/weight information, proof of vaccines being up-to-date, and registration. 

People get sick, income streams come and go, income properties sometimes don't perform as expected, economies rise and fall, interest rates rise and fall, lending tightens and loosens, natural disasters happen... etc... etc...My point is to do what you can to avoid or lessen the impact of the balloon.

The appraiser will put the most weight on the income approach and determine the value by capitalizing the NOI. 

How will they change Obama Care to make it work as it has about a year to go to completely collapse under its own weight.

Everything on the first page, and especially the top half, carries more weight - the rest is just application of the law of diminishing returns

That being said your purpose for the building is how you should evaluate it with some weight given to your exit strategy.