@Chris Clothier I believe this gentlemen could possibly be interested in your services. 

Therefore right now I'm considering using a service for submetering and then billing separately (currently I live in the ADU and rent out the main house).Does anyone have experience with this? 

Is it segregated (only my funds in the account)- do you have an attorney on staff that reviews exchange docs and keeps them current - what is the typical time for your staff to complete an exchange ( you want to get a feel for if they are understaffed and can they get the work done on your time frame)- how many exchanges do you do a month- what is your errors and omissions insurance through, can I get a copy- what is the amount of your fidelity bond - for each occurrence- what protections are in place to prevent wire fraud- will my funds be used by the company for outside investments (goes back to the type of account funds are held in)- who will be my contact during the exchange (goes to customer service, you want one contact who you can reach by telephone)Investors should keep in mind that it is their money they are placing with a QI to hold for a short period of time and be sure they feel comfortable with the company they choose to perform this role. 

So far I have not had good customer service. 

I hope you are asking two separate unrelated questions, because there's no point in doing cost segregation for properties held inside your self-directed solo 401k, save for some very rare exceptions.Some of the Bigger Pockets experts who operate reputable costs segregation companies are @Bernard Reisz, @Yonah Weiss and @Julio GonzalezSome of the Bigger Pockets experts who offer Solo 401k administrator services are @Dmitriy Fomichenko, again @Bernard Reisz and @Brian EastmanReach out to them and see if they can help.

Basically, you ask permission from the mortgage servicer, who then informs the mortgage investor assuming they are good with it.

We don't allow any "deal-making" in the forums, which includes advertising your services or properties, looking for partners, etc.

We're making progress.Thank you everyone, be safe out there on the World Wide Web.

Personally, I enjoy self-managing and screening is my favorite thing, so I'm not in the market for PM services, but a lot of my clients that I work with and other fellow investors would be interested in it.

Therefore, I try to find a more user friendly web site that can distill the above into something that is readable.