Building a Seoul warehouse needs 20% more income to match the yield of buying one

Take Shinyoung's ranges at their midpoints and the developer's problem shows up in the yield. A buyer paying 7.5 million won per pyeong at a 5.25% cap rate collects about 394,000 won of net operating income per pyeong a year ^[3]. A developer spending 9 million won on the same box needs roughly 473,000 won to earn that same yield, 20% more income from the same kind of tenant ^[4]. Standard leases now carry fixed increases of 2.0% to 3.0% a year plus consumer price index clauses ^[7]. On the fixed escalator alone, closing a 20% gap takes six to nine years ^[5].

Shinyoung's two ranges overlap. Completed assets at 5 million to 10 million won per pyeong and new development at 8 million to 10 million share the top of the band ^[7]. At the midpoints the discount is 16.7%, below the 20% to 30% the report leads with ^[6]. Read the other way, a 20% to 30% discount off 9 million puts the typical trade between 6.3 million and 7.2 million won per pyeong ^[6], in the lower half of the quoted transaction range. A prime leased asset bought at the top of the band is paying full development cost.

The same report, published on the 22nd ^[1], points at a second clearing price. Court and public auction floors of 4.5 million to 5.5 million won per pyeong ^[4] sit 27% to 40% below the 7.5 million midpoint of ordinary transactions ^[8]. The value-add half of Shinyoung's two-track recommendation buys exactly there, and it directs that hunt at the southeastern and southern districts ^[11][12].

Shinyoung says the gap acts as a floor that prevents further declines in asset values ^[5], and it attributes the climb in development cost to a credit squeeze in project financing along with rising raw material and labor costs, leaving what the report calls a structural "supply cliff" ^[8]. Two of those three inputs move with the cycle. If PF spreads normalise and construction prices ease, the discount narrows from the cost side, without a single completed asset printing a lower price.

Who is paying has changed. Foreign capital accounted for 74.7% of Seoul metropolitan logistics transactions as of 2025 ^[10], leaving 25.3% for everyone else ^[9], and Shinyoung names Blackstone, KKR and Starwood Capital among the mega-funds using adjusted prices to chase prime assets and large portfolio deals while leverage costs keep short-term, dividend-focused money on the sidelines ^[9]. "Right now, for logistics centers in the Seoul metropolitan area, buying existing assets is more advantageous than building new ones," said Jin Won-chang, a director in Shinyoung Asset's investment advisory division ^[13]. "With new supply blocked, the scarcity of high-quality completed assets will only grow," he said ^[14].

I would buy at the auction end of that band and not at 10 million won per pyeong. The counter-case is a serious one: with new supply halted and rent-free periods already shortening ^[7], market rents can close a 20% income gap faster than a 2.5% escalator does ^[5], and in that world today's prime prices look cheap. A third path has cap rates sitting at 5.0% to 5.5% ^[6] because almost nothing trades, which makes this a floor under asking prices. The test across all three is whether auction prints migrate up into the 5 million to 10 million transaction band, or transactions come down to meet the auctions.