Whether it was a mistake to have created the LLC this earlier, it was cheap (in PA) and it gives my marketing a boost in credibility. 

I looked at the other years and none of the other years have any of this dramatic change.  

Probably fake accounts to boost their rating. 

Boosted by a diverse economy, relatively low cost of living and above-average population growth, Columbus had the second-highest rent growth rate in Ohio, trailing Toledo (3.8%) but outpacing all other metros in the state, including Cincinnati (3.0%) and Cleveland-Akron (2.2%).

If not adding that added square footage will give you a boost when you go to refinance. 

Each of these variables will dramatically change the advice I give the individual asking me this question.

While forced appreciation—that is, renovating buildings to raise their value—is the main method of extracting wealth in the BRRRR approach, long-term property appreciation can also boost total returns on investment.Financing Options: To finance the purchase and renovation of properties, investigate the availability of financing options such as hard money loans, private lenders, and traditional mortgages.

How would that erode dramatically? 

There is no way I could pay that kind of a price for a SFH anywhere in the U.S. now since home values have increased dramatically.

But I think there is an optimal point - one shouldn't go too expensive or high-end where you could end up dramatically reducing the pool of potential tenants.