Not really looking for blessing or permission here, just checking my understanding of repair operating expense versus replacement capital expense, and wondering if anyone else has replaced just one half of a roof for similar reasons. 

@Niki Ann Bell if you are trying to do rental arbitrage you'll have to get permission from the landlord/owner of the property.

One of the biggest factors I had to overcome was gaining faith in myself, and give myself permission to succeed.So get educated, work hard overcome your fear, hang in there, and believe in yourself!

I want to put together some contract that I have all my subs sign with some sort of contingency to cover events like this, maybe with a penalty against the final invoice per missed day or walk off.

Other exceptions (CCRs, easements, R/W, etc.) would likely be permissible as they would not affect marketability.

She couldn't stop roommates from "borrowing" her things, so we simply got permission from the landlord to install locks with the understanding original would be put back before walk-thru at end of lease.

Not permissible to have a tiny home + ADU... the tiny home counts as the ADU:"Only one companion unit [=ADU] or movable tiny house, and one junior unit are permitted on premises.

On my last deal, the inspector had a few issues (chipped paint, holes in walls, missing handrails on stairs) and I got permission from the seller to fix them before closing to keep the deal alive.

So many of my tenants thought the deferral of a fee gave them permission to pay late.

When you put a property under contract, your contract should clearly state that they are not to make any changes to the property, including new leases, without your written permission.