There is no exact number because the the age, the size, the building type, the types of tenants, the local weather, the quality of materials purchased, the quality of the labor, all play into it.

You have a huge competitive advantage being a contractor since you can put some "sweat equity" into the deal if you wanted to save some money in the beginning, and you also probably are much better at estimating rehab budgets, getting great deals on materials, and keeping rehab timelines on track than the average newer investor.

The IRS clearly has some trust issues with attorneys.Commissions and fees paid at closing to licensed realtors and mortgage brokersPayments for purchasing all kinds of goods, materials, and property, including real estate itselfRepayments of loansI do not have my contractors' SSNs - what do I do?

The listing agent would have to follow the terms established in the listing agreement and advertised on the MLS.

Learned a lot about material costs and time to rehab properties.

And you don't really see them advertising all over the internet, those industry veterans each bring a book of business with them.

We wouldn't be able to advertise as a "property manager" without being properly licensed.

With industrial or properties involving hazardous materials (gas stations, medical offices) is the risk of environmental contamination usually covered by insurance (which the tenant would be paying for)?  

Often wholesalers pitch an off market property only to find out it has been on the market forever and is a real dud or it is listed and they are up charging the price without consent (false advertising). 

Money can fix almost anything in real estate and if the only tool you have is a hammer, everything looks like a nail.Learn the biz on a limited scale - if you are hands on - buy a small property (1-4 units), maybe have some work done, advertise, rent it out and then manage it.