I wrote an article about the screening process for BP, you can check it out here.To directly answer your question, we require 2.5x the rent for gross household income.

Population growth is expected to be flat over the next few years, potentially constraining household formation and storage demand.Market OutlookThe Los Angeles self-storage market is projected to improve gradually over the next few years:- Vacancy rates are forecast to decline from 11.6% in 2023 to 10.5% by the end of 2024 and further to 9.4% in 2025.- Asking rents are expected to grow by 1.0% in 2025 and 1.2% in 2026, a turnaround from the slight decline projected for 2024.- New supply is expected to moderate, with inventory growth slowing from 5.4% in 2024 to just 0.5% in 2025.While the market faces near-term headwinds from slow economic and population growth, the moderation in new supply and gradual absorption of existing inventory should support improved market fundamentals over the next 2-3 years.

It does not matter that she likely never had household income above $40k. 

Because households are smaller today vs 20 yrs ago due to delay in marriage and child bearing smaller units are in more demand because of need and affordability.   

i think of myself as a manager in 3 areas - my W2, my RE portfolio and my household. 

Total profits last year—subtracting property taxes, management fees, insurance, and repairs—were approximately $12k (which was then divided into shares for us and relatives).The city is Grants Pass, Oregon, population 40k, with median household income around $50k (50% lower than the national average).

[BLS]Additionally, the separate Household Survey (individuals) saw the unemployment rate (“UR”) rising to 4.1%.

New York City allows members of the public to have roommates in both single-family homes and in apartments, provided that these roommates maintain what is known as a 'common household,' meaning they share the livable space of the dwelling unit," Under the NYC Administrative Code, no more than three unrelated roommates can occupy a dwelling unit and maintain a common household, which means you can take on one or two roommates.

In the end it comes down to number of people (households) in an area and number of units.

*Immediately report to Manager any presence of mold growth that cannot be removed by simply applying a household cleaner and wiping the area.