They do get ten percent of the income for this work, like a property manager. 

We negotiated 50 percent payment which worked out well for everyone.

We also could not ever buy or sell shares or 'change percent ownership' from how it started.

All other residential buildings that are 20 years or older would be able to add 33 percent of the number of existing units, and rounding up or down.2-flats: 2x0.33 = 0.66 rounding up to 1 unit3-flats: 3x0.33 = 0.99 rounding up to 1 unit4-flats: 4x0.33 = 1.32 rounding down to 1 unit5-flats: 5x0.33 = 1.65 rounding up to 2 units6-flats: 6x0.33 = 1.98 rounding up to 2 unitsAnd so on.If adding a coach houseAll properties that are either vacant or have a single-family house, 2-flat, 3-flat, or 4-flat would be able to add one coach house as long as there is no conversion unit on the lot."

Long term capital gains tax is 15 percent, which in your case is $12k.

So I can understand that as new investor, you want to finish the deal you have invested a lot of time searching for, you might think this is deal of lifetime given how long you have searched for.  

I do not know much about tax liens, but the idea of putting your money into it with a 16% return sounds much better than the .000000000000000000 (infinitely tedious 001) percent from a savings account.

If someone tells you it’s 100 percent recession proof, run away

Generally, your percentage chance of success if one hundred percent reliant on your due diligence in building a team on the ground.

But it was impossible for them to ever get the fixes ever checked off 100 percent.