Some food for thought:-Philly is more affordable than NYC, DC, and Boston-More and more people are beginning to work remotely -Projects may be funded by 1031 exchanges in Qualified Opportunity Zones-In 2018, the homeownership rate in Philadelphia was 52.7% according to the United States Census Bureau -Currently, inventory for Single Family houses in Philadelphia is low-In 2019, the average household income in Philly was $64,838 according to Esri

Got for a average, modern home.

pid=1704Houston Real Estate Highlights in February:-Single-family home sales jumped 13.2 percent year-over-year, with 6,044 units sold, marking the eighth consecutive month of positive sales;-The Days on Market (DOM) figure for single-family homes was unchanged at 68 days;-Total property sales surged 14.9 percent, with 7,393 units sold;-Total dollar volume increased 19.4 percent to about $2.1 billion;-The single-family home median price rose 5.2 percent to $245,000, reaching a February high;-The single-family home average price climbed 5.9 percent to a February high of $301,648;-Single-family homes months of inventory was at a 3.5-months supply, down fractionally from 3.6 months last February but above the national inventory level of 3.1 months;-Townhome/condominium sales rose for a third straight month – up 12.8 percent, with the average price up 14.5 percent to $216,170 and the median price up 16.5 percent to $176,500;-Lease properties experienced a mixed performance, as single-family home rentals increased 5.8 percent with the average rent up 1.8 percent to $1,768;-Volume of townhome/condominium leases fell 2.2 percent with the average rent up 3.5 percent to $1,607.

Longest I have had people stay typically is 2 years, but on average it is almost every year.

If you want to be conservative with your real estate numbers, also be conservative with your stock numbers and assume a 6% rise instead of the 'market average' of 7%. 

According to Rentometer, 3/2 homes nearby average $1850 (so about $600/room); 1bd/1ba apartments average $1070.I plan to rent out two rooms with a shared full bath and share the master bed/bath with another family member.

@Jeremiah Russell  Yes, I use the 50% rule as a general calc, so for $1600 in rent assume $800 in expenses, on average. 

The average across Dayton for the total bill is about $180 per quarter per household. 

The rent is a bit below the area average. 

Averaging 1.5 turn overs per week with a $50 cleaning fee adds $300 per month brings total income to 3,600 per month revenue.