Sure, they may be able to grow to a very moderate size,  add a few units, or trade up to a larger investment, but as for real scalability: NO.Why?  

. - Rents are also a function of supply - 2024 saw the most new construction of multifamily units in American history (nearly 575,000 estimated 2024 deliveries of new multifamily inventory), and 2025, while not a record setting year, will see deliveries top 500,000 again - a huge supply increase. 

I don't number my properties (I don't own anything anymore I don't want to keep) but I do keep tabs on my net profit independent of income taxes on each unit because if a unit starts to slip I need to know if it can be salvaged (have I been consistent with rent increases?

I am leery because it is such a small deal…just 1 small 1 bedroom unit…and not a great a deal unless maybe you are local and have a use for it…walk to community college.  

I’m on the verge of firing my property manager due to 7 months this year of at least one unit being vacant.

Was there any language in there regarding a buy back?

Did a 125k upgrade to unit, but now need to make income.  

I considered adding a universal gym but will go with billiards and foosball instead.There are more spas in this STR market than EV chargers ((only 5 or 6 units have a EV charger), yet it is about 200 miles from the nearest large metro (too far for most EV to go without a recharge).  

If the rent payment covers your mortgage and you have a good tenant, why would you get rid of them to take on the expense of unit turnover, because you will have to do one, and the 5% vacancy loss just to increase your rent $150 per month?

We will also be working on habitation units for Mars..... with ai.