All tradesman are of varying quality and all have some vice or shortcoming, that's the way life is.

There are honestly a large about of variables, many times from one lender to another things can vary widely.  

It can vary depending on the area and how long the rehab will last, but that's what I typically do.I hope this helped

You sell more houses, you make more money. 100% commission based.2) Varies from company to company.

They vary a little from state to state.

I had shopped around on Insurance on our first units and found varying degrees on premiums.Snow removal and lawn care are not factored in, have to find out if tenants are managing this as the seller is from out of state but claims self managing the property. 

If you have more than 4 mortgages then it will be 20% down + six months reserves and a 720+ credit score (may vary a little by lender).

While returns would vary by market, they would generally be in the mid- to high teens over the duration of the holding period, with the profit from home price appreciation.Blackstone Group LP (BX), the largest investor in single-family rentals, has spent $4.5 billion to amass more than 26,000 homes and continues to buy, according to Eric Elder, a spokesman for Invitation Homes, the rental housing division of the world’s largest private equity firm.Blackstone’s net yields on its occupied houses are about 6 percent to 6.5 percent, Jonathan Gray, the firm’s global head of real estate, said during a May 3 conference call with investors.

As for CPA's, their rates vary and typically depend on how complicated of a tax situation you are in.

You can earn 12-15% doing that, but you can also earn 17-29% actually putting your money in the real estate itself (these are my numbers, everyone's numbers may vary based on their own situations).