I was told his work is the best and all his houses are top notch quality, I trusted their word thinking that things will come up in appraisal as well as inspection. the inspection was good, nothing negative was on the inspection, the appraisal was also correct.

For new builds, get a third party inspection.

What I can say is I recently did a home inspection on a property which uncovered a lead inlet pipe into the house. 

Mention a payment schedule that reflects project progress and key milestones, such as rough inspections passed or drywall completed.

Each closing, whether multi-family or single family, is going to have some of the same costs: title insurance, attorney fees, inspection fees, appraisal fees, fees associated with financing, etc.

Confirm fireplace has been cared for as part of your quarterly inspection.

Once she receives a voucher, you’ll need to register as a Section 8 landlord and have the property inspected to meet HUD standards, which can take 30–60 days.If you want to move forward with rehab quickly, a cash-for-keys arrangement might be faster.

It has sat empty for the last 20 years but the current owners have completely gutted it, have bids from contractors they're willing to share, cost estimates etc. and have had lots of inspections done and so much pre-work with the city and county to figure out what they can and can't do, so a solid plan is already in place.

The report is as good as the answers you provide to their questions.The risk is that you answer a question incorrectly which generates an incorrect report.I would have a discussion with your CPA to determine what the land basis is(required to start the cost segregation).I would also have your home inspection / appraisal on hand to answer the questions more thoroughly. 

Marketing, screening, collecting rent, unpaid rent, maintenance, capex, insurance, lawn care, vacancies, turnover costs, inspections, and so much more.