Bust out the ozone machine and oil based primer.

The setup is as follows: 2 family, separate, propane for cooking and heating oil; shared electric (one meter for building); septic and well.  

This is coming from a small fish in a big pond.

March and April are good fishing dates and I would say 50%, May 70%, August before school starts 80%, August after school starts 65%.I was very surprised as to how high our lake house was in the fall and Winter.

This is not at all the case if you have to pay for other people to install tile for you.About the wood: there is no other flooring in common usage that will outlast 3x oil-poly coated 3/4-inch oak strip flooring.

So if you don't have one, you have to "go fish" for one.

Personally my best fishing for leads and business has been BP, networking, cold calling or texting, FB, database and newly trying zbuyer out.

Now, if you are in the fish stick game, I don't expect you to refer me over to your competitor fish stick brand #2 so I get it.

I hope someone can help with what kind of big expenses  are in the multi family properties i need to know when looking for properties(can only think of roof, deck, insulation , heating system )Also, Not sure if I jump ahead but I am trying to sort out all the related expense for rental property below with my conservative estimate per yearProperty management fee (10%)insurance :2500property taxes: 2000 -3500Owner paid utilities : 2500( in case of paying oil burning heating system , if tenant pay their own electric heat so i guess i can eliminate this expense)snow/lawn: 1200Accounting cost: 100Vacancy reserve (5%)Maintenance reserve (10%)Can anyone give the idea if i include these expenses correctly ?

You'll get ventilation and filtration.Ductless doesn't provide ventilation.But it is much easier to retrofit.It depends on how much you want to put into it, and how nice you want the finished product to be.When you say "heat" do you mean propane, gas, oil or electric?