How can i figure out cost?

Unless your mechanically handy your maintenance costs will eat you up.  

We currently own one door (split acquisition and closing costs and contribute equally to management and ownership), and have split equity and cash flows from the property - also pretty standard in my experience.My question is this - I want to purchase a house hack and would like to use our current business entity for accounting purposes (tracking income / expenses / etc).

This, however, changes not only from county to county but also by neighborhood, zip code, school district, etc.Another change we are witnessing in real-time is increased seller’s concessions, which can go towards financing closing costs or buying down the interest rate.

But why would you buy one property in an area you are likely to leave and then have to manage a one-off (not cost-effective)?

My current primary ( scenario 1) Keep the primary for the life of the loan ( current rate is 4.5 so i dont see my self refinancing anytime soon)current home value 1,150,000Loan amount 935,000appreciation estimate 5% per year after a 28 year hold and the house is paid off I would have a house worth 4,312,000$my current mortgage is 6125$ ( piti) included My second option( scenario 2) Sell the house, walk away with $150 ,000 ish in hand and put that into a low cost index fund Rent a house elsewhere for about 3000$ ish and take the extra 3000$ im saving everymonths from not having to pay my mortgage and puting that money in the index fund as well I ran the numbers on both of these scenarios and doing what I mentioned above would break even at about 28 years meaning my stock account would be worth 4.3 million just like my house would , but the only is that holding a house for 28 year would mean 28 years of property taxes, loan interest ,home insurance and repairs etc whick I calculated to be about 1,200,000$ at minimum which raised my eyebrows to say the least Also i understand that each of these options ( stock market vs real estate ) will have there tax consequences ( long term capital gains) so any thoughts on that would be appreciated as well.  

Add charges for rent for the remaining months, estimated utilities, estimated cleaning and repairs and cost to re-rent (in our case: cost to PM is 1/2 a month's rent).

Build cost 2 million ($240 per sqft for a 5400 sqft duplex) (Sale price $650 per sqft)Upon stabilization, the properties market value is projected to be between 4.5 and 5 million.

As you ask, "Can I get an appraisal waiver, never mind the open sewer line in the kitchen", the borrowers won't make it to closing, no worries, I have power of attorney.

For this deal the cost and proximity to local hospital, and colleges How did you find this deal and how did you negotiate it?