More inflation than at the moment?

Rent growth is a function of supply, demand, and interest rates:- I'd ground any forecast by stating I expect national rents to rise on a pace more or less in line with inflation over any long time period. 2-3% per year.

This would let you rent out the house for the next 3 years if you wanted and still get to take the gain.  

This implies your return numbers are inflated.  

Individuals are purchasing these properties, rehabbing them, and raising rents.

Real estate's "gross rent multiplier" is Wall Street's "sales to revenue",  "cap rate" is roughly "P/E ratio".When evaluating markets and investments I tend to start with GRM (or lazily the 1% rule), then attempt to return a cap rate based on assumptions about costs, then I work my way to multiple years of projections (assumptions about inflation, amortization, tax benefits, etc), and if I am partnering with one of my smart friends I have to pull up an IRR (internal rate of return).I also look at regional employment levels, median income to rent ratio in the zip code etc. 

What rent escalations are built in? 

If you’re using leverage, be extra cautious with your underwriting to ensure the deal still works at today’s rates.Economic Uncertainty: Inflation, potential recessions, or shifts in demand could affect rents, vacancy rates, and property values in some markets.Increased Operating Costs: Rising insurance premiums, property taxes, and maintenance costs can cut into profit margins, particularly for buy-and-hold investments.Regulatory Risks: Some areas are increasing restrictions on landlords, particularly short-term rentals.

Another tailwind to rent growth. 

@Chris Babb,I have moved in to the Build to Rent field full time.