Can one lot be held 45 percent by a Roth IRA and 55 percent by the owner's LLC as tenants in common?
Here is a live scenario worth working through. An investor is under contract on a 6.2 acre infill parcel at $340,000 in a growth path suburb. The seller wants a 30 day close and will not split it. The Roth SDIRA has $154,000 available. A taxable LLC the investor controls, used on prior land deals, has $190,000. So the natural structure is tenants in common: the IRA takes 45.29 percent, the LLC takes 55.71 percent, the deed reflects both, and everything after that gets split at those exact percentages forever. What is confirmed: the custodian will hold an undivided TIC interest and has done them before. Their fee is $325 a year plus $95 per transaction, which on a land deal with almost no transactions is cheap. What is harder to get a clean answer on is whether the initial co-investment is itself a problem, since the same person controls the LLC and owns the IRA. The general reading is that a simultaneous purchase of undivided interests at proportional cost from an unrelated third party seller is a different animal than the IRA transacting with its owner. Counsel will usually say the same thing with more hedging, and then add that the purchase itself is the small risk; the real exposure is every single dollar that moves afterward. That is the right instinct, and it is why the structure deserves scrutiny. Carrying costs are roughly $4,100 a year in taxes and a mow contract. Hold period is probably seven to nine years until the sewer line extension gets funded. Exit is a sale to a builder, hopefully in the low sevens. The decision in front of the investor: sign the TIC structure, or buy the whole thing with the LLC, leave the Roth out of it, and lose the tax-free treatment on the best appreciation asset in the portfolio. Earnest money goes hard within days.