It is HIGHLY recommended that a licensed plumber review review the findings and recommend any repairs necessary prior to the end of your due diligence period."

There are a few reputable companies around the country, some of which are here on BP, with solid long-term reputations.  

My reputation hinges on it, and with that my income.

I simply rely on Airbnb and VRBO (although the vast majority of my bookings come via Airbnb).I have a great cleaner and I'll have a handyman, plumber, etc. come to the house when needed for those things. 

@Sam Kay, regarding the first floor leak, I would hire a plumber to pressure test the property.  

I don't know the condition of these units, but to bump rents several hundred dollars per month, you will need to spend some real money.Additionally, Home Depot or your plumber don't care what you are getting for rent.  

When two separate plumbers looked into the issue they both determined the shower needed to be replaced because it was improperly installed (by prior homeowners we purchased it from) causing the leak.As for the length of time the repair will take, it was 3 days total to rip out the shower, install the new concrete pad, install the new shower, etc.

But, if I were a financial advisor or capital raiser for hire, would I want to risk my reputation with my investors on you?  

Since you're talking about a leak...Did they have a plumber inspect or a roofer inspect?

Who is a reputable DSCR lender to use?