Bangkok Condo Glut Nears 350,000 Units as Developers Retreat to Cheaper Suburbs

Bangkok’s stock of unsold condominiums has climbed to nearly 350,000 units, a backlog built up largely between 2016 and 2023 that some analysts now estimate could take up to six years to fully clear. Zoomed out to the national level, Thailand’s total unsold housing stock is projected to reach around 213,000 units by 2026 — a scale of oversupply commentators have started comparing to Japan’s long-running vacant-home problem.

Developers are visibly responding by moving downmarket and outward. The average price of newly launched condominiums in the capital fell to about 84,500 baht per square metre in the first quarter of 2026, and more than two-thirds of new launches that quarter were priced below 80,000 baht per square metre, as builders shift toward suburban, mass-market projects rather than premium central locations.

Price alone isn’t the main obstacle to clearing the glut. Mortgage lending has tightened sharply, with an estimated 50-60% of home-loan applications now being rejected — a bigger barrier to closing sales than list prices themselves — while household debt at 86.7% of GDP (as of Q4 2025) leaves many prospective buyers with little room to take on new borrowing.

The deeper concern for the market is that this may not be a purely cyclical downturn. Thailand’s working-age population share has been shrinking for years, a demographic trend some analysts argue mirrors the structural forces behind Japan’s own housing overhang. If that reading holds, working through Bangkok’s current unsold inventory may depend on more than a rebound in short-term buyer sentiment.