What is the Property tax diff between both these areas along with any hidden school taxes/Mello roos etc?

As @Mark Miles mentioned, Option B will have a lot of hidden costs and likely hidden time-consuming repairs.

Investment Info:

Single-family residence buy & hold investment.

Purchase price: $1,425,000

Cash invested: $400,000

Value add and a house hack!
We added cheap square footage by filling in a breeze...

You just need to close correctly and legally.We have several information and instruction documents we send out for free to anyone wanting to learn.I will reiterate -- no fight intended -- just advising what we have seen, done and developed over the past numerous years.Stay safe out there guysAlan 

It's only natural to pass these costs on to the consumerSome costs used to be hidden from the borrowers and baked into the interest you pay.

A little patience and properties often hit the market with lots of hidden value opportunities 

Additionally, you should probably instruct the PM to dry out the attic if you have with fans and / or a dehumidifier. 

But the hidden back end costs lurk in the installation fees for padding, stairs and overall install costs.

Google "ADU Sitework & Utility Costs: 10 Hidden Costs."

Memphis holds a lot of hidden investment opportunities.