However I have had to replace some major appliances recently which had put my in the defecate and added to my motivation to sell (Hot water heater, two refrigerates and a washer/dryer).

If it’s an older property or has deferred maintenance, you might want to lean toward the higher end.When it comes to CapEx (capital expenditures), planning for major replacements like roofs, HVAC systems, and appliances is key.

US population growth slows and fewer new households form, which is probably not great for RE investors; and 2. the Social Security trust fund runs out.  

If one or more units are vacant, the remaining units often don’t provide enough cash flow to cover expenses, making it harder to meet operating costs.Maintenance costs: A fourplex comes with four times the appliances, plumbing, HVAC systems, and other components to maintain, leading to significantly higher repair and maintenance expenses than single-family homes.If you want to see the detailed calculation, read this BP blog - More Units Doesn’t Mean More Money—Why a Single-Family Home Can Beat a Fourplex.Resale value: Multi-family properties have a limited buyer pool—mainly investors—who base their offers on CAP rates.

I've developed, use with all my coliving properties, and teach HPM (household-led property management). 

Now keep in mind, median household income here in MN midwest and CA is almost exactly the same, just over $100kyr.

Lastly, while birth rates are declining the # of pet households is increasing.   

Quote from @Lauren Kormylo: Hey Mike, Kohls has their yearly Toastmaster small appliance sale too, with their big rebate. 

Here are the common exceptions:Relocation for Work: If your job requires you to move a significant distance from your current property (usually over 50 miles), you may qualify for a second FHA loan near your new workplace.Increase in Family Size: If your household has grown, and your current property no longer meets your family’s needs, you may qualify for a second FHA loan to purchase a larger home.Co-Borrower Separation: If you co-signed on an FHA loan and are no longer living in the property (e.g., after a divorce or separation), you may qualify for a second FHA loan for your primary residence.Non-Occupying Co-Borrower: If you were a co-signer but did not occupy the original property, you may qualify for another FHA loan as the primary borrower.Important Note: FHA guidelines typically require you to demonstrate that the current property will not meet your needs or is no longer feasible as your primary residence.2.

These markets often have strong population and job growth and strong rental demand.But the reality is that even in more affordable markets like Columbus, you'll need about $50k-60k household income just to qualify for a conventional investment property loan (this assumes good credit and reasonable debt).