He must have spent gobs of time and money every year maintaining the books and the structure. 

I had them replace a nice front door set ($350) because the finish was coming off after 16 years.

Verifying last 2 years of rental history very important!

Most HMLs use 30 years.

Even work for them for years, yes years.

Additionally, it can help maximize renovations and improvements.36.4% of the total depreciable basis was classified as 5-year class life.

Lol, I'm  not sure i was very helpful, more anecdotal lol.I learned to estimate from other contractors many years ago.I found labor unit books from college bookstores.

We're located in Bradenton, Fl, so this property is attractive for snowbirds looking to get away for the winter months but I'm trying to figure out how to fill it the rest of the year. 

We modeled every new build in our market every year and find that it's exponential growth as you build smaller your returns go higher and I would guess it's the same for existing. please comment on your market and trends if you've seen similar patterns anywhere in the country.

@Aishan Gonaduwage what specifically have you read, and how OLD was it, about Detroit being on the decline?