Applicant's monthly household income must exceed three times the rent.

The duplex is priced a little below the area’s median home price.  

A $2,000 monthly payment today will feel like about $175 in 50 years.Las VegasLas Vegas’s median price of single family homes is $450,000, a 50-year loan at 6.5% cuts the income needed to qualify from $76,600 to $68,316—a 11% reduction.

CAGR MLP is compound annual growth rate of the median listing price (appreciation)... 4BedCashFlowMonthlyLatest is using the realtor.com median listing price and the Housing and Urban Development "Fair Market Rent" (40-50% of observed rents) for a 4 bedroom living unit.

You have no control over neighboring property.This can vary street by street but the median household income in Avondale is about as low as anywhere in the country; so, that may take full time hands on management from a local investor with extensive experience in this class of property.

The STR tax strategy is most beneficial for high-income earners (think: $300K+ annual household income). 

Older properties that rent below the median rent level in a city are always going to very expensive to turn due the age of the property and the condition that the property is usually left in by that class of tenant. 

A lot of investors out here lean toward that 70–75% LTV range because the rents and DSCR requirements in some submarkets don’t always support an 80% refi comfortably.For example, most of the rentals I analyze in Greensboro average around the mid-$1,500s in rent, and median home values in the more investor-friendly pockets usually fall somewhere in that $180K–$220K range.

The city's median one-bedroom rent is high at $3,731, reflecting the demand in this highly competitive market.

Household formations, family formations, home affordability be damned.