I love self storage.

First decide the area(s) of interest to you as an investor - both geographically and the type of investment (SFR, small / large multi, storage, etc).

In my case, I have residential rentals in one LLC, commercial properties in another, self storage in a third, and my real estate company operates in a fourth.

That's where bad experience/nightmare come in.Lastly, to answer your question, to build a basically designed, square/rectangular house without crazy jigsaw puzzled cuts on roof, the following price is a good competitive construction only price for what you need to do:Around $165 per sq ft on conditioned space (for an average 1200 to 1800 sq ft house, 8-9ft high ceiling, everything is investor grade finishes), $90-100 per sq ft for garages/unconditioned storage, $60 per sq ft for porches/opened spaces.  

Things like office, self storage, retail, etc.   

(They’ve been complaining about a utility trailer being parked there and the appearance of a propane tank for weeks.)

ADU, parking, storage, laundry).

Our Self Storage developments, the same thing. 

The structure and roof is good with some issues I want fixed:-covert fuse box to 200amp cb panel-storage shed/garage water damageI’m seeking advice on how to make an offer with either the seller repairing these items (another investor I’m not sure I trust to do it properly) or asking for funds at closing (escrow). 

You move you're stuff into temporary storage and then move it back into your new property.