I’ve been exploring tools like Google Sheet calculators that are coded for accuracy and speed, allowing individuals to focus more on their strategies, acquisitions, and capital raising.So here’s my question to you:How did you master underwriting multifamily deals?

Best you can do is individually pull title on properties. 

I manage a few smaller complexes and they are all on individual price schemes though they are usually within a few dollars of each other. 

have looked into Batchleads as well but quality of data looks comparable  Check out traceestate.com $0.08 per individual and $0.15 per LLC.

These costs for most of the individuals are considered personal in nature (unless you have a RE portfolio that is run like a business; see below).

For instance, in my private lending, I dont really give a numerical credit score much weight, but I absolutely look at the composition and history of the individual tradelines on a report if the borrower is a smaller outfit, such as a single member LLC or similar solopreneur-type operator.

I’ve been around real estate for decades, and I read in The Economist once that in lively markets like Charlotte, folks will pay a premium for a comfortable room if you’re near major employers.A friend of mine tried something similar out in Austin a while back.. he’d inherited a 4-bedroom property and split it into individual room rentals.

The tenants enjoy using the interface, it is simple to communicate with them as a whole or individually, collect rent payments and see when they are in transit, offer CC payment options at tenants expense, track maintenance request, share documents, and lease the property.Short comings are their financial portion.

Though I would caution you on hard money lending until you understand the industry a bit better, that can be very rewarding but you have to be able to do your due diligence on deals because you're turning over your hard-earned money to an individuals project, often a flip. 

Same property listed water bill paid by landlord so how much does it cost to put individual meters for each property so cost can be moved to tenants?