With a Solo 401k, a participant loan can allow you (or your wife) to borrow from the plan and these funds can be used to fund a rehab.

@Brad TarryYou can roll all or part of that old 401(k) to an IRA of your choosing, including a self-directed IRA that provides broader investment choices.IRA plans do not offer a participant loan feature as 401(k) plans do, however.If you are self-employed, you could potentially establish your own Solo 401(k) and then have access to the loan feature.If you will be joining another W-2 employer you could also potentially roll some of your current 401(k) into that plan such that you would have some capital from which to borrow.If you have an outstanding loan on your prior employer 401(k) that may need to be paid off promptly if you have terminated service. 

But you should at least attend some meetings and let them know you are a homeowner in the community and that you're interested in being an active participant.

Would you be interested in participating in an interview? 

If they are participating in the profits and not charging interest, they will be more like a limited partner than a lender. 

., your parents and children, for example) by the IRS will be deemed prohibited.Unfortunately, such transaction would violate the following prohibited transaction:https://www.irs.gov/retirement-plans/plan-particip...

I have had clients participate in these non-trustee/sheriff sale auctions (I didn't represent them) with bad experiences.

Please see the following regarding the distribution rules.https://www.irs.gov/retirement-plans/plan-particip...

Generally speaking advantageous tax treatment follows.Assuming active participation and AGI is below phase-out, expensed items will reduce taxable income, which seems like mainly W-2 income.Consult with your CPA/EA.

@James FainSee the following for the 401k loan rules. https://www.irs.gov/retirement-plans/retirement-pl...See the following regarding the 401k distribution rules.https://www.irs.gov/retirement-plans/plan-particip...