Shop rentals / self storage

[Cor Bay]

Hello fellow investors. 

Looking to develop a 4.75 acre site along an interstate hwy at an interchange.
I currently have a business at the site with a 6700 sq ft shop that I plan on renting out.

I would like to put up several shop rentals 1500-2000 sq ft each for rent by plumbers, electricians, mechanics, etc... And maybe some smaller unfinished storage units that are larger than normal self-storage units but are unfinished and not heated.

Anyone in the business give me some feedback on this? Pros Cons? I have been in residential and some commercial real estate for over 20 years so not a newbie. Just not as familiar with this business.

Thank you!

[Ronald Rohde]

Quote from @Daniel Lioz:

Question, when you build your small warehouses for plumbers/electricians, etc...what are you putting into them?  Electrical and windows or are you also doing plumbing and water to each unit? How much electrical (regular outlets or more Amps)?

Thanks!

 Yep, it becomes an infinite question of just a little bit more. Costs during construction are so much cheaper than afterwards. But you can easily overspend your budget and target market rather quickly.

If you're running plumbing, may as well put in showers, now you're doing office. Add a kitchen, etc.

Amps to the building vs 3 phase, 4phase, all great questions that don't even start into specific unit buildouts