PS I like Iowa just started there myself in 24 providing capital to local flippers and landlords .. doing what I preach lending money .. although I did buy a storage unit. 

Digitize physical receipts for easy storage and use a consistent naming convention for easy sorting - 2024.03.25 Home Depot.Maintain proper records, such as contracts, settlement statements, and promissory notes.Additionally, you can track income and expenses consistently using software or spreadsheets.As you scale, if bookkeeping isn't fun, consider hiring a bookkeeper for a couple hundred bucks per month.

In my case, I have residential rentals in one LLC, commercial properties in another, self storage in a third, and my real estate company operates in a fourth.

I have one fridge in storage as a tenant brought their own, so that is a mixed bag.Refrigerators and stoves are reasonably failure-proof appliances if you stay away from ice makers, water in door options, and other things that add complexity.

It also sits on 2 acres with separate buildings for animals and a nice storage shed.

We pivoted to self-storage a few years ago.

If that isn't feasible like it wasn't for me (personally being born and raised in San Francisco), you may want to look out of state.

Self storage zoning.1.  

Definitely a good thought for other markets if its financially feasible, but my thats not possible here in FL since we're right at sea level.

A huge number of properties we have looked at would have issues on this front.It can lead to an opportunity to improve the value of a property if you can buy it with an illegal area, get that area legalised and then sell on with a higher value that the bank would lend against, but it's not clear cut and it seems though that there are almost two levels of 'legalisation' - we were able to register all of the annex on the plans and could fully incorporate a portion of it but there is another portion that is too close to the back boundary wall that should only be used for things like storage and not ever for habitation. 2) During the purchase process be careful, amongst other issues with this property we had the situation where the seller's lawyer was not actually a lawyer (having been struck off).