Depending on which brokerage you use, you could possibly borrower against your securities holdings with a line of credit (similar to a margin loan) if it's not a retirement account. 30-35% of the balance would likely be within reach, but make sure you FULLY understand margin calls and when they would trigger.

But I can still use an FHA loan and then transfer the property for $1 to obtain maximum protections of an LLC with maximum leverage.They are told this can trigger due on sale clause and will still will be paying transfer taxes based on the properties assessed value + deed prep, recording and misc. title expenses.

There are other considerations that may still make it impossible to permit the construction of the building even  if the by-right use permit is obtained and its important to have an architect closely examine how the proposed floor plans will layout to confirm egress &  bedroom windows + localized zoning overlays along with a  number of other factors.

Are there any other considerations to ensure appropriate liability protection in this arrangement? 

Companies have considerable flexibility in choosing where to set up operations.

Hey Nathaniel, In this scenario, when selling the property for $800k, depreciation recapture would be a key consideration.

They are limited in how much you can extract, but all are worthy of consideration for the source of funds.  

However, it's important to note that using leverage in an IRA can trigger Unrelated Business Income Tax (UBIT), and there are strict IRS rules to follow to avoid prohibited transactions.

.### Other Considerations- **HELOCs (Home Equity Lines of Credit)**: You can take out a HELOC on each property or on a few properties to pull out equity.

Home has appreciated considerably.