Can you rollover a sep IRA into self directed?

(This is where someone would chime in if I have this wrong.)My question is: Can I roll over my existing Roth Solo 401k into a Self-directed Roth Solo 401k? 

I'm looking for information about whether you can rollover funds in a TSP into a QRP, while still working. 

Currently dealing with a bank for a new mortgage (trying to roll over $11,000 losses from repairs, ect)The property cash flows at $400/mo, but I rolled over all my losses, taxes says 0 gain, 0 loss, but I rolled over all the extra 'losses' until next year.Mortgage is trying to tell me that I am losing $800/mo on the property and being a pain in the *** for approving my new loan.I know the freddy and fannie verbiage says something like after one year only the net gain and net loss can be calculated.

I’ve been looking into different entity types for ownership of the business and since I will be leaving my w2 job (hopefully) later this year and will have a 401k rollover to do and was planning on a self directed ira that I plan on having invest in the contracting company.

I am reading some things online and here's a quote: "Although you cannot invest directly in real estate in a 401(k) account, you can rollover your 401(k) into an IRA tax-free and then use the proceeds to invest in real estate."

So I roll over the HELOC to a new one every 10 years to pay interest only.

I feel even those tenants that could have a tough time coming up will not just roll over and ask for a handout.

I had around 40K in Fidelity 401K account and I rollover-ed to TDAmeritrade when I left the company.

While it is not possible to roll over from a ROTH IRA to a ROTH 401(k), would it be possible to have the ROTH 401(k) buy an asset from a ROTH IRA?