Gap Investing: Buying a Home With a Korean Jeonse Tenant's Deposit

Picture yourself floating in a pool with a life jacket on. Thanks to the water's buoyancy, even a little effort keeps your whole body afloat. Gap investing works the same way. It uses the huge buoyancy of a tenant's deposit.

Say a 500 million won apartment already has a jeonse tenant (Korea's lump-sum deposit lease) who paid a 400 million won deposit. The new buyer doesn't need the full 500 million won. The buyer takes over the duty to return the 400 million won to the tenant later, and hands the previous owner only the 100 million won difference. That makes them the owner.

This way of investing only the difference (the gap) between the sale price and the jeonse price is called gap investing. You put in only a little of your own money and use other people's money as a lever to move a big asset. It's a classic form of 'leverage' investing.

When real estate prices keep rising, putting in 100 million won and seeing the home rise by just 100 million won means a 100% return. So in the past, many people used it to buy several homes with little capital.

But the longer and higher the lever, the bigger the danger of crashing to the ground when you lose your balance. When home prices rise, it brings big profits. But the moment home prices or jeonse prices fall, serious problems begin.

Suppose a home that was worth 500 million won drops to 350 million won. The tenant's contract ends, they say they're moving out, and they ask for their 400 million won back. Even if you sell the home, you're 50 million won short. When a home's price falls below the jeonse deposit (or below the deposit plus any loan, if there is one) and only an empty shell is left, it's called a kkangtong jeonse ('empty-can' jeonse).

Worse, if the owner has no cash on hand, they have to find a new tenant. If the going jeonse rate has dropped below the old deposit, they must borrow money to cover the difference. This is called a 'reverse jeonse.' If the money isn't returned on time, the tenant can face the risk of losing their deposit.

In the end, tenants tremble at the fear of losing everything they own. And owners who overreached by buying several homes can go bankrupt one after another, like falling dominoes.

To be more precise, gap investing is an unusual financial structure built on 'jeonse,' a rental system unique to Korea that is hard to find in other countries. Unlike a bank loan, a jeonse deposit carries no monthly interest, so it looks like free money. In reality, it's a huge debt that must be paid back 100% when the lease ends.

So the essence of gap investing isn't an easy way to grow money. It's an interest-free debt-funded investment that uses the tenant's deposit as seed money to bet on future home price increases.

Besides the gap amount, buying a home brings many extra costs: the acquisition tax, real estate agent fees, the property tax you pay while you own it (plus the comprehensive real estate holding tax above a certain amount), and the capital gains tax when you sell. If you rush in without calculating these costs and the risk of interest rate changes, you can easily take a big loss.

Gap investing leans heavily on the hope that home prices and jeonse prices will rise or hold steady. So when the real estate market slumps, it carries a structural risk that can leave deep scars, not just on individuals but on society as a whole.