I told them that I had already paid an extra 3% service fee, which they could deduct from the balance, but they claimed it was already included in the mortgage and could not be used for a refund.Now it seems they are fully scam.how can I do to get my money back, I have lost around $6062 USD for this case.Because it is criminal, can we report to police and get the money back? 

. (# and size of offices, bathrooms,doors, windows, floor drains, lights, truck docks).If you make an educated guess you will likely still be tearing out or changing brand new walls and concrete, but if you leave it incomplete it is harder to rent.Plan on some extra expense for those tenant improvements.

You can have some issues but usually nothing huge.

When you have enough extra cash, do it again on the same block or same neighborhood. 

Hi Rohit, I am a local Investor & Realtor in Mcallen TX, I own a few rentals myself and usually have no problem getting them leased within 30 days.

Lots of risk that you can't control and it is taxed as Ordinary Income plus the IRS will see you as self employed so you will pay all of the Social Security tax and perhaps a 2.5% extra tax if you make over $250k. 

This can be very expensive and is usually the worst choice because you can't justify the cost.2.

All cash invested $1m Market value: $1.2m= 83% cost to value (17% profit)What are people usually aiming for at a minimum? 

At the time of lease signing they would give a check (usually like a cashier's check) for 1 full month's rent ($1000 in your example) and then the pro-rated amount would be due on the first of the month with every succeeding month being the full rent.For my own investing I usually look at it on a case-by-case basis.

This will make it easier for you to comprehend how much each project component will cost.Budgets should always contain a contingency to cover unforeseen problems or extra work that may come up during renovations.