To New (and experienced) DIY investors
Something that's not talked about enough on here is building permits, specifically with rental properties.
Just a fair warning to new investors out there. Just because you are capable of doing the repairs to a new or current house does not mean it's legal. Know the laws of your city.
A common mistake is to think that because you own the property, this means you are allowed to do the work yourself. This is not the case for rentals in so many markets. Many markets won't allow you to even put up drywall without having a licensed general contractor do the work. The city won't even give you a building permit.