The best thing about a new build is the capital expenses and maintenance and repairs will be minimal for many years.  

Duplexes provide privacy, flexibility, and scalability, but strict short-term rental regulations may increase upfront costs and maintenance.

The structure is mainly appreciation-based, which minimizes tenant and maintenance risk. 

FHA loans typically require the property to be a primary residence for at least one year, so he should confirm compliance with his lender.Once rented, he can deduct expenses like mortgage interest, property taxes, maintenance, and depreciation starting from the date it's available for rent.

The other part not said anywhere online, if you ever pay for classes in the club, you can come to class indefinitely as long as you pay your annual renewal fee. 

And to really take care of your mom use your annual gift limits to gift back to her the rent she pays. 

What about maintenance if a device breaks?

There are also additional costs of operating and maintaining an LLC, like separate bank accounts, annual report filings, tax filings, etc.2.

@Ming HuangRecommend you first figure out the property Class you want to invest in, THEN figure out the corresponding location to invest in.Property Class will typically dictate the Class of tenant you get, which greatly IMPACTS rental income stability and property maintenance/damage by tenants.If you apply Class A assumptions to a Class B or C purchase, your expectations won’t be met and it may be a financial disaster.If you buy/renovate a property in Class D area to Class A standards, what quality of tenant will you get?

Then based on @Michael Baum's suggestion, I think I will have my cleaner and/or maintenance person do monthly/quarterly maintenance like using using enzyme based cleaners, grease fighting drain treatments and hot water flushing.