The property is now worth double the original investment and I became familiar with turning a residential property into a commercial one.As the last quarter of 2022 and early 2023 saw a softening of the RE market, I saw housing prices start to drop - not tremendously - but by enough that a $325K home in an up-and-coming centrally located Houston area was now closer to my price range of 285K.

Would love to be able to get that or other datasets like this on a monthly/quarterly basis.

I don't do any wholesale but I am an investor so send me some deals ;) From what I've seen from other wholesalers it's a lot of cold calls so don't discouraged b/c even 1-2 deals a month OR even a quarter can really make a dent over time. 

It boggles my mind that there are people out there that are investing hundreds of thousands of dollars into a niche while being incapable of reading even the most basic reports on that niche.Every quarterly report is the same. 

If you are there are 20+ accountants on this site that specialize in real estate taxation.

To increase your chances show them the math that all of their prosperity at a later date and allows them to pay their tax at a later date and its spreads out income over the length of the loan instead of it all being liable and being paid at the end of that year after it closes. 

On average, our water/sewer bill runs between $500 & $580 a quarter and we state in our lease that anything over our budgeted amount will be split between all the tenants.

Regarding the plumbing, I routinely request that "old style" stop valves (multi-turn gate type) be replaced with quarter turn ball valves that have a much longer operational life.

If you are a self employed flipper, you'll probably want to make quarterly tax payments based on your income along the way, but there are plenty of strategies based on your comfort level and types and volume of income, so this is a very personal decision. 

@Robert Shedden , This does not give you are the result what you are expecting because you, like most of the people, are missing the basic concept of taxation.