They financed my purchase and I sold off the property in parcels and doubled my money. 

This is a 2500 sq foot 3 bed 2 bath both sides.

Just go through them, select the renovated/closely matching ones, and enter them into a model.Here's my fix & flip model, you can see the comps entered and some quick stats below them: Then I use that comp data to adjust the Sale Price in the model to what I estimate it will be (double check the resale $/sf is in-line with the comps), then adjust the purchase price until I hit my desired return level. 

Quote from @Dennis Knapp: I Have one double that I live in i bought as an investment just to help pay my mortgage.

Received a letter that they are more than doubling my monthly fee + a $50 meter reading fee, and unfortunately this is a cost that the state does not allow us to pass along to the tenant!

If the rate is reasonable then it may make sense to try to save fast to get to the 3.5% down payment on a double or triple - househacking may allow you to increase your savings rate and pay down that loan even faster.As for estimating costs, closing in NY factor at least 1% of the mortgage amount for tax, plus $1500-2000 for lawyer, title and fees, then the amount required by the bank for escrow will depend on the actual property taxes and insurance.

He started out clueless and he is now just doubling down with the lies in a poorly executed blackmail attempt of sorts.

Tearing down any rooms that are a little wonky before the appraisal.For example, I bought a HUGE (3300 sqft) 3 bed house.

     * House is a 2699 sq/ft Single Family Residence| 3 beds, 3 bathroom | Built in 1956 | NO HOA     * There is a chance I could pay only interests so I can start saving some cash for the incoming maintenance and annual payment equivalent to the 12 monthly payments (~$5,029.77 per year during the balloon period)The advantages I can identify in this deal for me are:* Lower interest compared with traditional loans* Lower down payment compared with the ones compared for traditional loans* House is technically ready to be rented (waiting for the inspection) * Forecast - 3 yr growth (appreciation) is expected to be 8.1 % (Bigger Pockets)The disadvantages I can identify: * I am still vulnerable to foreclosure if sellers don't make mortgage payments to the bank.* Refinancing issues at the end of the Balloon Payment?

Double his money on day one.