In most cases, you still need to collect a co-pay and may have to deal with inspections.Screen them like anyone else and use the same standards for all.

I will say that if you are willing and able to live in a duplex, sometimes you will have to pay a premium to be in an area that fits your standards.

I've reached out for quotes on flood and standard home-owner insurance that the mortgage company is asking for, but I'm thinking about getting an umbrella coverage or similar to cover the rental business.  

I was never sure if I just had high standards because of my architecture background, or if indeed, my contractors were performing low quality work.

My suggestion is make sure they are advertising your property to your standards, don’t be passive, and given that it’s winter time offer some move in incentives.

Just handle with standard deadbolt (i.e.: not a smart lock)?

@Robert Martinez:Underwriting standards with assumptions that are supported in reality and verifiable Transparency and communication: i.e. do they answer my call, emails.  

California building code has a minimum standard for noise transfer between floors which is at least 50 STC (sound transmission like voices, tv, etc) and at least 50 IIC (impact noise, people walking or jumping). 

If we did a standard staircase there would be zero counter space left.I just don’t know how tenants would like having a spiral staircase

What is the typical interest rate from a money lender as opposed to a bank or other standard loan giving entity?