@Vincent PlantFirst, you’ll need to determine if he has clean title.

I own a cleaning service and I was wondering if I am in the right ball park for my pricing.

So an ARV can not depend on agent commissions.Now an offer price depends on everything (ARV, Holding costs, Smurfpoopies clean up from rampant smurfs pooping their pants as Gargamel was chasing them.

Agree with Adam, and that fee assumes clean and reconciled financials are provided (trial balance, profit & loss, balance sheet, and general ledger in Excel format).Partnerships are anything but simple now. 

How often do they need to be cleaned.

Septic System Replacement/Cleaning

I feel like I need to have the carpets replaced, HVAC deep cleaned, blinds replaced, window seals cleaned and anything else that you can think of.

The steps you're taking are good ones in order to establish a FICO score, but as you already said . . . it'll take a while.There is an alternative process to this "automatic underwriting" called Manual Underwriting in which the underwriters are able to use manually input different data into the loan process and can often approve financially healthy individuals who can't get through the automatic underwriting process due to "no credit score."  

I'm talking about a single home, like a group living situation where people share a house but rent a single room in that house, and people share bathrooms and share cleaning duties as a community agreement.

We signed the lease, everyone was happy, I knocked $100 off the initial deposit so they could clean.