These were plats of subdivisions that were platted and recorded in the early 1900's but never developed and generally owned by one individual or company.

Sounds like me 30+ years ago....in my mid 20's. 

A fresh coat of paint in a modern neutral color and updated lighting can really elevate those spaces.Adding a deck or patio can be a great way to increase usable living space and boost value.

LLCs can help streamline bookkeeping, but they don’t offer tax advantags unless structured as an S-Corp.

You need to be able to answer those questions for your buyer(s), 

There's a good chance the issue(s) you face has already been discussed and answered.Ask questions in the appropriate forum.

s postsSo far I haven't had any issues with my tenants here and my properties are located in a very pro-tenant law city.

No, you can jet and cut even with clay tiles as long as your plumber knows what s/he's doing.

There's a good chance the issue(s) you face has already been discussed and answered.Ask questions in the appropriate forum.

I did one last year to swap from an “older property” built in the late 1990’s to a new build  I didn’t run out of reasons, but you get the point.