Consult a real expert who does a thorough comparison, not some useless quick estimate on a napkin.

I find that when it starts to slip, it usually gets worse.Operation, Maintenance, Storage, Alterations to Premises: On a continuing basis, tenant agrees to: Keep premises in a clean, neat, and sanitary condition; no parking, storage, or accumulation of debris on lawn or yard.

1% is a rough guideline for napkin math.

These generally don't require as much infrastructure from the county (septic instead of sanitary sewer, usually no stormwater systems required), and I sell them to consumers wishing to build their own homes on enough acreage to have vegetable gardens, chicken coops, etc.

I see it every day with folks running deals by me that when I do simple napkin math they dont come close to working..

So back of the napkin, that's almost 3 years of waiting to get the money back. 

Quick 10-min sniff test:I use a simple “back of the napkin” rule:Take gross rents × 50% (that’s your rough NOI after expenses).Subtract debt service.If you’ve got positive cash flow left, it’s worth a deeper look.This weeds out 90% of deals in under 10 minutes.3.

Simple napkin-math shows financing at Ryan's purchase price just under 70%; par for the course in commercial real estate. 

The tricky part is those don’t always line up perfectly, especially in today’s market.The 1% rule is a great back-of-the-napkin filter, but it’s not the end-all.

Good thing I remember a little from thermodynamics classes and have AI run some back of the napkin math to see how big of a warm wate plume 1.2 million gallons per day will make.