Not too long ago a friend who works for an IRA custodian invited me to do a webinar for his company's clients on "sound private lending".

If somebody owns real estate inside of a Roth IRA/401k once they turn 59.5 they can distribute the property to themself completely TAX FREE. i.e. 

There's the typical Roth IRA or Traditional IRA (post-tax vs pre-tax contributions).

That said you may consider a Solo 401k to contribute 10x more than an IRA annually if there's self employment robust enough and no employees. $50k might be enough to do some PMLs but probably not for the IRA/401k to actually own real estate.

The child was paid and funded a self directed Roth Ira or Solo K immediately.

Is it good idea loan on IRA 401k for downpayment for about 50k towards 20% downpayment and closing costs etc.

Stable, conservative & easily accessible during the interim.If you put in a Roth IRA, it becomes a lot harder to tap into..

All income and expenses must flow directly through the IRA without mixing personal funds.

A Roth IRA is excellent for long-term tax-free growth, but contributions are limited ($7,000/year at your age) and early withdrawals are restricted.

I also have current investment opportunities that can pay up to 6-9% return a year - payments monthly & a lot of additional securities to protect one’s investments (can utilize regular money or self directed IRA/401k options).I am also looking to help more people with attaining home ownership, obtaining commercial/private financing or investing.