Subtract your original loan amount of $73,600 and the amount you would be able to refinance is $38,400 before closing costs.

So say their gain is $350000 and it is one person that leaves $100000 or less gain after all things are subtracted (commission, improvements...)

In either case the capitalized cost of fixing the property will either be subtracted from the value of the building or amortized and the amortized cost subtracted from the net income.Building built 100 years ago can have so many issues with structure, systems, material, etc that there is no way to generalize.

In general, ADUs are a value subtract (meaning hands off costs typically exceed the value added). if hands off ADUs ever become good value adds or other zoning rules such as SB9 make it more attractive than current regulations, I have the properties accumulated that I can leverage the rule changes. 

first off I never use any of those things.. its all very simple math you get lost in the Tulles trying to drill this stuff down to a 10.3567 % return other wise i dont want it.for buy hold   look to the median price of your target market at buy at that price that will be better schools and homes generally speaking  USE 50% of rent for on going costs and then subtract mortgage ..

Subtract the average maintenance cost per door from the average rent.

Once the home sells the investor subtracts their rehab cost, the sales cost and then they split the profit.

I plan on continuing to purchase and sell properties - how cumbersome/feasible is it to add/subtract properties from a portfolio loan like this? 

So now subtract that number from your remaining profit… and don’t forget the cleaning costs in between tenants… maybe some carpet cleaning at  $100, and a house cleaner at maybe $150?  

Any non principal expense is subtracted from your income the same way you’d do a long termPassive income losses are capped at 25k and phased out at 150k agi.