If you decide to get a Sun Tunnel type of device, get the ones with the rigid and inner mirrored tubes.Just like I don't try to answer questions involving financing, investing in entities that I'm not familiar with, etc... perhaps you shouldn't discuss items that you are unfamiliar with!?

does anyone have any experience with investing in self storage?

We kept the spaces at mobile home size dimensions and added storage sheds. 

Purchase price: $299,000 Cash invested: $310,000 28 Unit Self Storage Facility

Is it true when underwriting small storage facilities that you should use a high cap rate between 12% - 15%?

So yes, it's a compounding pharmacy and I was sort of picturing mixing things with a mortar and pestle type device. 

If they are smallish, perhaps an easier option is to create storage units in this unfinished apartment that the tenants can rent.

I have a neighbor with an odd sized little piece of property that would work for me to build a shop for woodworking and general storage.

Try this device to measure the noise: https://www.amazon.com/Indicator-30-130dBA-Detector-Temperat...You can also stick the same device by windows and doors to see if temperature drop - which would indicate an insulation issue.In addition to getting an Energy Audit, you may also want to look into any state, local or utility programs that offer discounted or financed energy improvement programs.

Since current tenant still there, owner will have to pay for new tenant's housing in a hotel plus temp storage of their belongings, etc.