Once you have that, you'll know how much you can put down.And you can go to the seller with your math and say, "This is what the property will support monthly and this is what I can put down right now."

I have not done one yet but have done my homework and will be working on them very soon.  

@Ilana Dan First of all, good job for doing your homework.

So is the correct math just 1350 rent minus tax, interest and insurance?

“If I sold, and after closing costs, maybe net $75K (simple round math), how else could I invest that $75K to get a larger return?” 

He is putting 30% downi have a 3 step plan and would love to hear your opinions on this (my math is generally super conservative): A) Split the houses in half and have (2) 3 bed 1 bath and (2) 2 bed 1 bath units  ----spend about 60k on 2 new kitchens, a couple interior walls, and 2 new meters      - this would flow about $8000-$9000 total, and bump the value to about $1.5mB) Pull plans for 3 additional units or for new 5 units (would have to demo the rear unit) ----spend about $20k on paperwork      - this would bump up the value to about 1.6-1.65m C) Build the new units assuming all 2 bed 1 bath 800s.f. on 2 stories 400k-750k      - Each new unit would flow about $2200, bringing the total to about 14,500 - 16,000, bringing the value up to 2.75m @ 4.5% capGenerally speaking, 2bed 1 bath in that area goes for about $2500+, way undershot for safety purposes What part of my plan would be the best part to sell at? 

Simple math says I will generate $3,000 on my investment versus your 900. 

What math needed?

(around 400 Euros in social security and accountancy fees) so you would need to do the math to make sure the tax savings exceeded the costs for maintaining the S.L. 

My condo's pricing will decreaseBy doing simple math and writing down the pros and cons, the obvious risk adverse option is (1).