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 have tons of my units leased by people who do airbnb.  

I have bought a couple of units and now working on my own development.

Thank you.Are you buying a SFR or multi unit?

I currently own a 4-unit in Allentown which has done quite well for me and looking to expand my portfolio throughout LVH.

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?  

If you have the extra cash you can buy more units or be able to handle expenses that crop up more easily.

Other than the miscommunicated eviction, they have actually been very accomodating through the process and the issues with this one unit get resolved, then I would have nothing but positive things to say about the purchase.

Your cashflow to achieve $80,000 per year takes a lot of rental units.  

I'm imagining something more like add a wall, turn a bedroom into a kitchen-living on one side and a formal dining room into a bedroom on the other side, maybe add a half bath in each unit.