Needless to say, I have broken systems in place right now that need to be fixed. 

@Angel Fabricio Aguilar Ortega "The most benefit for Real Estate in the US now would be smart contracts to exchangeTitle,Notes, Funds"This is the part Im interested in, I think that building a Dapp to facilitate this part of a RE transaction can be a huge benefit to the current system. 

Reinforce entry points with security bars, and consider a monitored alarm system or joining a local neighborhood watch for extra protection.

We could also tie our security cameras into the police system as part of a local program here in Chicago.We also paid "house sitters" to keep the squatters out!!

I've had issues with their system not notifying me when a tenant has a maintenance issue and there are times the site is requires me to clear my cookies before I can see anything in there.

I like RentSpree because the prospective tenant can upload all of their docs into the system and the system auto-emails all references to confirm.

Every system you try will have flaws, or you may salivate over a feature that appears in other software.Some familiar names are mentioned frequently: Stessa, Apartments.com, RentRedi, TenantCloud, Innago, RentManager, Avail, Rentec Direct, Doorloop, etc.I recommend conducting thorough research on each app online to understand their offerings, pricing, etc.

Have a system in place already if you ever grow bigger or expand, don't have to change it later or figure it out later. 

I really do appreciate all of the comments folks have made and it’s clear that they have systems in place and I hope that knowledge will aid me in my endeavor. 

While the IRS does not mandate a physical site visit, the IRS cost segregation audit technique guide (ATG) does suggest conducting “field inspections.”It’s important to note that the ATG is not an official IRS document.It serves as a guide and cannot be used, cited, or relied upon as an authoritative source.However, the recommendations in the ATG are worth considering.According to the guide: “A field inspection is recommended to document the physical details of the building, type of construction, materials used for construction, the assets contained in the building, the size and types of building systems, and any land improvements that were included in the purchase of the property and the condition of that property at the time of purchase.”So while the IRS does not require a site visit for cost segregation studies, following the guidance from the cost segregation audit technique guide can be beneficial.