@June Broce We do a ton of Transactional Lending for wholesalers looking to double close, some investors who are doing seller finance deals or same day purchase and refinance into a DSCR loan.
If you can assign the deal and save yourself some money, it's the better option but I 100% understand why someone also prefers to double close and secure their profits depending on the scenario.
With that said, you can buy/sell the land SAME day for a legit double closing. I highly suggest that you find your buyer first, know what they are willing to pay for it, then negotiate with the seller to a lower price. Then from there choose to assign or double close and if the latter then set it up with the closing team for the same day. You can then use Transactional Funding if you choose, otherwise if you planned to buy the land then sell it later, you'd have to get a different loan type, which inevitably will cost you more plus longer hold time and greater costs over the double close and certainly over an assignment of contract.