I am considering doing this but should I charge a fee to write up and get the lease addendum signed?

Quote from @Briley Roe:  yes those fees are very high as you have a broker fee and other fees for a loan little over $100k at 6+ points. 

Understand the fees involved and calculate the total cost for an entire year of management so you can compare the different managers.

Never heard of a voucher tenant being responsible for maintenance and repairs, rental licensing fees, lead testing upkeep, cap ex, reserves, book keeping and tax prep......and even if you self manage, it takes up your time and should be treated as an expense because its taking away from your ability to earn income elsewhere. 

For example, I mention that every adult must pay a $30 application fee, pass my credit/criminal background, make a combined income of 3x the rent, and whether or not the property accepts pets.

The main downside is being dependent on the HOA—issues like poor management, rising fees, or unexpected assessments can hurt your investment.

There are sometimes fees associated as well but they seem minimal and scale well since one line of credit can purchase multiple assets.Interested if anyone else is using this lending strategy and what your experiences/recommendations are.

There are no taxes, but there are still fees which work just like taxes.

We are pet friendly and have some zeroscape backyards and have wording like "We are pet friendly with a fee, but please note although backyard is fenced there is no grass and certain areas contain crushed shell which could hurt your pets feet". 

Owner ended up settling with the tenant, but then we had to threaten to sue our own client to get them to pay our legal fees.- Owner must sign a Hold Harmless to indemnify us against any potential tenant lawsuits relating to the work their contractor is doing.--- Another lawsuit resulted from owner's contractor taking down basement handrail to get supplies down the steps, then they didn't put it back and tenant fell down the stairs.- We also negotiate a reasonable completion date, depending on the Scope Of Work (SOW). --- Who gets all the phone calls and wastes time calming a tenant down because the owner's contractor doesn't show up as scheduled after they took time off from work or a 3 day job takes 3 weeks?