Security deposit rules, rent-to-own mechanics, and what a triple-net lease actually shifts onto the tenant.
There's no federal cap on residential security deposits — it's set state by state. Some states cap deposits at roughly one to two months' rent; others set no cap at all. The deposit-return timeline (commonly 14–30 days after move-out, depending on the state) and permitted deductions are also defined at the state level, so the same lease clause can be enforceable in one state and void in another.
Rent-to-own agreements typically require an upfront, non-refundable "option fee" (often 1%–5% of the purchase price) that's forfeited if you don't exercise the purchase option by the deadline. A portion of monthly rent is sometimes credited toward the eventual purchase, but that credit is also usually forfeited if you walk away — read the forfeiture clause before treating any of it as "your money" until the sale actually closes.
In a commercial triple-net lease, the tenant pays base rent plus a proportional share of property taxes, building insurance, and common-area maintenance — the "three nets." This shifts cost volatility from landlord to tenant; a quoted NNN base rent that looks cheap can end up costing more once the pass-through charges are added, so always ask for the estimated total NNN charge, not just the base rent line.