But if your unit has unpainted woodwork, or light switches, or outlets or carpeting or another type of flooring, or ceiling light fixtures, be prepared for a stupid mess when a very nice tenant becomes a very amateur painter.The above doesn't even mention the materials the tenant will use--sorry, but Walmart or Ollie's Closeout Store discount paint is not Sherwin Williams or Benjamin Moore. 

This is regarding a small retail property I own, it is a three store building.

If you go to a shoe store looking only for Lebron shoes, you are unknowingly willing to pay a premium over any other similar pair of shoes.

I've only ever managed a SFH, but am willing to do what it takes to learn how to manage something with many more tenants (or perhaps self-storage or warehouses?)

Try a local flooring store and see what they offer...

However it lacks major big box stores, fast food restaurants and boutique shops.

Hi Michael,This is my boilerplate response to people for learning how to estimate rehab costs:#1 Read the Book on Estimating Rehab CostsAs other's have mentioned, JScott's 'The Book on Estimating Rehab Costs' is a great resource for new rehabbers to learn how to Estimate Repair Costs on 25 common rehab repairs.https://www.biggerpockets.com/store/the-complete-g...#2 Explore Lowes and Home Depot to Learn About Material PricingTake a tour through Lowes and Home Depot (or their websites) and look at finishes materials and fixtures that you will consider using in your rehab projects.

https://www.biggerpockets.com/store/rental-property-investing-ultimate

I do not want to collect money from the store everyday.  

It is a tiny home in the back with a huge lot and a commercial store of 200sqft on the front on a very busy street.