Very common and very fair.But what does it mean? 

Where I live in Los Angeles it is very common for a tenant to offer up-front money because the rental market is extremely competitive and good inventory is scarce. 

Ordinary expenses are those that are common and generally accepted in the business.

There's a good chance the property manager knows the area, knows the rental rates, understands the tenant qualifications common to the area, etc. 

In our subdivision, it is listed as a separate lot with a driveway/common area easement.

As you will soon find, there is no common definition of a turnkey property, and it can be very risky (and expensive) to make any assumptions.The ongoing management of the property is another area of vastly different approaches to turnkey investments.

For example, Ft Worth has some odd soil settling in some parts of the city that is really common, and we had to mud-jack a house foundation. 

These are not all that common of features in the area (ADU's somewhat more so), and its hard to tell from the identifiable comps how the market might value them.Ultimately this is very usable space - but given an ultimate buyers appraisal may affect their ability to pay, we're trying to think through how an appraisal is likely to value these parts of the property. 

Common fees will include a set-up fee, leasing fee for each turnover or a lease renewal fee, marking up maintenance, retaining late fees, and more.

There are more legal and DD costs that will arise when you do a syndication, so you want to make sure the deal is big enough to support those costs and ultimately worth all of the work it will require.