I have a 4U with a steam boiler, the expense of ripping out that whole system and building 4 separate heating systems is many, many times what I may lose in the error between the 2 numbers, if there is one.

I have used Kim Spann at 615 Title numerous times. 

When things go wrong, the CPA and attorneys I used  would answer to it, and have liability insurance for errors and omissions, i.e.

We asked the closing company to provide us a copy of all closing documents in advance so that we could read through them before the closing date to make sure there were no errors-ie made sure all info on the closing disclosure was correct , promissory note, deed of trust, initial escrow disclosure, right of recession, amount of funds needed for closing were correct also.

I’m definitely looking for a mentor or someone to shadow because I did my first investment which I saw where I made numerous mistake.

It's based on the IRS' 6-yr window to audit returns with "substantial errors", as opposed to the commonly known 3-yr window for regular audits.

It's a liability issue, only a broker and brokerage can cover you for errors and omissions.If you got your broker's license in a state (or some a manager's license) then you could open your own brokerage and be independent, but the fees would be 10x.

To be conservative I would rather assume it will not go perfectly as planned and I may end up taking some time before I can get everything sorted.In summary, do any of you know of options which I can get financing for an apartment which leaves a wide margin for error and relies mostly on my personal ability to repay the loan?

People tend to think of contractors as commodities, but that is a fatal error.

After reaching out to my inner circle of family and friends, I've already received interest from numerous people potentially willing to be my private money lenders.