Building costs up 5.8%, hotel starts down: the arithmetic of small-site hotel development in Tokyo

建築費按年升5.8%、酒店動工減少：東京小地塊酒店開發的算術

Published 7 October 2026 as part of the Weekly Market Review series, a retrospective review of each week since May 2026.本文於2026年10月7日發表，屬「每週市場回顧」系列，逐週回顧2026年5月以來的市場。

In the week of 25 May 2026, official data and a major investor survey set out the economics of building new hotels in Tokyo. Construction costs for a reference reinforced-concrete building were 5.8% higher than a year earlier, several building materials were still edging up, and large landowners cited contractor shortages as a reason to re-examine projects. New starts of accommodation and food-service buildings fell sharply in early 2026, while investors’ expected yield for Tokyo limited-service hotels edged down to 4.1%. The result is a thinner margin between development cost and exit value — and a stronger case for discipline, standardised design and price certainty on small sites.

2026年5月25日當週，多項官方數據及一份重要投資者調查，勾勒出在東京興建新酒店的經濟帳。參考用鋼筋混凝土建築的工程成本按年上升5.8%，多項建材價格仍在微升，大型地主亦以承建商不足為由重新審視項目。住宿及餐飲業建築物動工面積在2026年初大幅下降，而投資者對東京精簡服務型酒店的期待回報率微降至4.1%。結果是開發成本與退出價值之間的空間收窄——小地塊項目更需要紀律、標準化設計及價格確定性。

1. Costs: the BCCI construction cost index for a Tokyo reinforced-concrete apartment building reached 143.8 in April (2015 = 100, provisional), up 5.8% year on year and about 16% above its 2023 average; MLIT’s May survey still found rebar, H-beams, formwork plywood and oil prices “slightly rising”.
2. Supply: private starts of accommodation and food-service buildings fell 48.7% to 640,000 m² in January–April 2026, from a high 2025 base; Seibu cited labour-driven cost rises and a shortage of contractors in re-examining a major Tokyo redevelopment.
3. Exit: the Japan Real Estate Institute’s survey put investors’ expected yield for Tokyo limited-service hotels at 4.1% (−0.1pt), so value can still exceed cost for well-located schemes — but cost inflation and any rise in exit yields erode the margin quickly, which makes fixed-price contracting and standardised design central on small sites.

1. 成本：建設物價調查會的東京鋼筋混凝土住宅建築費指數4月達143.8（2015年＝100，暫定），按年升5.8%，較2023年平均高約16%；國土交通省5月調查顯示鋼筋、H型鋼、模板夾板及石油價格仍「微升」。
2. 供應：2026年1至4月民間住宿及餐飲業建築物動工面積按年減少48.7%至64萬平方米（2025年基數偏高）；西武以人手短缺推高成本及承建商不足為由，重新審視一項東京大型重建。
3. 退出：日本不動產研究所調查顯示，投資者對東京精簡服務型酒店的期待回報率為4.1%（降0.1個百分點），位置優越的項目價值仍可高於成本——但成本上漲及退出回報率任何回升都會迅速侵蝕空間，因此小地塊項目必須重視定價合約及標準化設計。