You could make exterior improvements while it is rented.  

The build cost would be a little higher because i would use foam in the exterior walls and also use insulation in the interior walls for energy saving and sound dampining.

We also made serious changes to the exterior entrances and decks.

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For deterrence, you want conspicuousness and durability because it will likely be exterior cameras.

Some cities use city employees, some use third parties, some require exterior PoS only (Maple Heights is one of these), some do exterior and interior, while some require exterior and offer interior.  

.- Stabilize the foundation with helical piers on the exterior. 

Older homes can be great and sometimes their foundations and their exterior building structures are a lot sturdier and of higher quality than newer builds.

@Patti Robertson I was more thinking if the tenant isn’t removing the trash in a timely manner or has trash on the exterior.

From our experience best practice has always been to have exterior cameras as well as smart locks.