I'm considering hiring a company that will meet with me and design our flips from studs to finished product, including the functionality of the property to the actual finishes used; i.e. the design of the flip. 

Don't forget the investment world is littered with bad products that are pushed through clever marketing (I don't know if those you mention are part of that).

Hello all,    I have performed some basic rule of thumb tests on renting out a property of mine, but before I fully commit I would like to double check with you all.I have a single bed and single bath house, 650sq ft, built in 1905. 

Unless you are going to self- perform, building a one off single family home in Grays Ferry will not be profitable.

I have a single family home that i have been renting to the same family for 7 years. 

that's lower than single family is going right now. did you mean $270k per side?

I want to invest into a turnkey single family rental property. 

Currently, I have a single family property that I closed on in early 2024 and am working with a property manager to find renters (was told that this is a somewhat slow time of year in Minnesota due to the weather, but should expect more movement in the coming weeks).I used a HELOC for the down-payment and a conventional for the other 80%.

We eventually evicted her and since single families are not in our plan, we renovated and sold for our asking price of $250k 18 months after we purchased the property.

Took a lot that I bought for $10,500 and built a single family on it in 57 days What was the outcome?