@Dave Nixon Interesting you picked up on this...small town churches are dropping like flies...I manage large capital improvement projects on institutions...just keep in mind that you'll be working with a lot of different entities, including an architect/designer, engineer, industrial compliance...likely other entities from the government and/or municipality...lots of moving parts.You should be aware of Asbestos abatement and concerns like underground storage tanks...which are very common in all these buildings you are referencing...design and abatement fees may run hundreds of thousands of dollars before the project even starts...Not saying you can't pull it off, just be aware...good luck! 

I have a 7 unit apartment complex that has a vacant 450 sq ft space between two existing units that I intend to convert into storage as a way to better serve tenants and force appreciation thru increased NOI.

That is going to keep a lot of people from building new houses, storage, etc. 

So when I know I have a project coming up that will require some or all, I will pick them up when I see them and put them in my storage unit.  

I currently own two self-storage facilities (and soon to be three, this month) and hopefully there will be a small mobile home park in the very near future.

With that being said i also planned on using the basement for my own personal use and storage.

Or should I buy storage units and/or mobile home parks.

Parking and storage for both is taken care of.  

If you can charge for a garage spot, extra storage, coin op laundry, etc. there are ways to make other forms of monthly income to cover if not off set property management costs all together.Don't forget late fees. 

Hi @Brandon Turner, I am based out of Olympia and I have personal experience with a moving company here called "All Ready Moving and Storage".