Korea's 25% move-in model swaps mortgage demand for a 30-year installment plan

South Korea's Ministry of Land, Infrastructure and Transport said on the 16th that it has finalized a policy to supply part of its public housing through an equity-accumulation model, with units offered under both the standard presale format and the new model starting as early as complexes scheduled for fourth-quarter presale ^[1][2]. Buyers acquire a 25 percent stake at purchase and buy the rest over 20 to 30 years, taking 20 percent every five years in three steps and a final 15 percent ^[3]. That changes what a household borrows and when, not merely what a headline price looks like.

The ministry's own arithmetic is the clearest part of the announcement. A public housing unit of 55 square metres of exclusive floor area in a regulated zone averages 630 million won, or about $453,000 ^[4]. At a 40 percent loan-to-value ratio, a buyer has to raise 378 million won of their own money ^[5]. Acquiring 25 percent first cuts the initial payment to 157.5 million won ^[6], a reduction of 220.5 million won or roughly 58 percent ^[1]. MOLIT notes the actual figure varies by complex and initial stake ^[7].

Two things follow from the same numbers. A 40 percent LTV on 630 million won implies a mortgage of 252 million won at move-in ^[2]; the 157.5 million won figure is exactly 25 percent of the sale price, so the illustration assumes the initial stake is paid without a loan ^[3]. Per unit, that is roughly 252 million won of origination-year mortgage demand removed and replaced by staged purchases, with each 20 percent step worth 126 million won and the final 15 percent worth 94.5 million won at the original price ^[4]. The source does not state how later tranches are priced, or who carries the unacquired stake in the interim, which is where the cash-flow timing question actually sits ^[8].

Separately, the government will introduce a profit-sharing model in which the national housing fund supports part of the purchase cost and shares in the gain on resale, with LTV of up to 70 percent ^[9]. The two models together are meant to fill about 15 percent of future public housing supply ^[10].

The candidate pool is fourth-quarter public housing presales in the greater Seoul area ^[11]. Based on the plan MOLIT disclosed last year, October presales include Pyeongtaek Godeok Ab37 (603 units), Osan Segyo 2 A-11 (399), Siheung Geomo S-1 (300), Namyangju Wangsuk A-17 (379), Uijeongbu Beopjo Town S3 (544), Ansan Singil 2 A-6 (252) and B-1 (382), Gwanggyo A17 (600) and Incheon Yeongjong A62 (802) ^[12]. November adds Siheung Geomo A4 (340) and Byeongjeom Complex Town Jubok 1 (780) ^[13]; December adds Siheung Geomo A10 (301), Guri Galmae Station Area A-3 (287) and Ansan Singil 2 A-1/3 (335) ^[14]. That is 6,304 units ^[5], and a 15 percent share of a pool that size would be about 946 units ^[6]. Schedules may change as projects proceed ^[15].

At Suwon Gwanggyo A17, 240 of the 600 units, all 60 square metres or less, were already planned as equity-accumulation housing by Gyeonggi Province and Gyeonggi Housing and Urban Development Corporation ^[16] - 40 percent of that complex ^[7].

Details on complexes, unit counts and asset eligibility come in October ^[17]. Watch three things there: the pricing basis for the later 20 percent tranches, whether equity-accumulation and standard presale units in the same complex carry the same headline price, and how asset tests are set. The package also creates a universal public rental programme for wider income groups, fosters private long-term rental of 20 years or more, and adds a jeonse and monthly-rent safety trust for deposits ^[18].