This is not be a personal purchase but rather for the company I work for, so we will also have the cost to build and impact fees and such. 

The only thing that comes to mind immediately is "water marks" on the wood hidden behind a wall in the basement which indicate it was previously wet and dried.

The note-writing and mortgage holding for real property is a strategy that only a few Canadians use and even fewer (to my limited knowledge) come out making any reasonable amount of money (net of fees and headaches).  

Are there any hidden costs to being a realtor that I should be considering?

You hire a realtor a flat fee to prepare contract, disclosures making sure all is legal.

Do the math again (make sure to shop around for a bank with lower fees) and see if there is a solution to increases the value of it in a short time, so you can refinance it later after get a new appraisal after  rehabe....No deal is batter than a bad deal which will stress you out and not worthy of the time and $.  

When the mortgage goes through I would like to repeat the process.I feel my core competency would be remodeling the structure to a high standard while saving a huge amount of remodeling fees through expertise, creativity and elbow grease. 

There’s a section that says “total purchase price” if I’m purchasing the contract of the home for 100k but selling for 110k do I put 110k as the total purchase price (along with closing costs and other fees) or do I just put how much the seller gets plus all other fees exluding the assignment fee? 

It also does the late fees automatically.

We list all of our wholetail properties on the MLS via a flat fee listing service.