Brian Davis: @Eric LoweThere's a company called Rental Property Refund that does cost segregation studies virtually, based on self-reported data from you.

If you just handled it on your own/contractor self-mitigation, you would need to have some proof it was handled.

After you expressed dissatisfaction and not wanting to move forward to give your property a chance, we refunded your technology fee in full as a gesture of goodwill, even though significant time and resources had been invested into your property’s preparation.Our 30% management fee reflected the value-added turnkey services we provided you at the time.

However if you plan on buying 3-4units, there is a trigger rule for FHA, it is called the self sufficiency test.

We are on all of the above, as well as:- Marriott Homes and Villas- Google Vacation Rentals- Jetblue Airlines- Allegiant Airlines- about 10+ more and soon to be American Express Travel and Hyatt's portal. 

This allows you to control renovations and decide whether to self-manage on the back end.

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.

@Sherry TsaiIf you choose to self manage, it would be the one closest to where you live.

If you go too low I would either recommend self managing or liquidate it. 

Or keep building and retire your self sooner.