ENVALITH
第一建設工業株式会社 logo

DAIICHI KENSETSU CORPORATION

1799Standard MarketConstruction

第一建設工業株式会社 logo
DAIICHI KENSETSU CORPORATION1799

Construction Business

An integrated civil engineering and building construction business, and the core segment accounting for approximately 98% of net sales

PeriodCurrentPreviousChange
Net sales (completed construction contracts)¥58,885 million¥56,929 million
Segment profit (operating profit)¥6,825 million¥6,957 million
Segment profit margin11.6%12.2%
Orders received¥73,906 million¥61,771 million
Backlog of contracts in progress (period-end)¥44,383 million¥29,362 million

Business Details

This segment handles order intake and construction management for civil engineering and building construction work in general. East Japan Railway Company (JR East) is the segment's principal customer, and railway infrastructure work forms its foundation. Amid solid demand for both public and private construction investment, the segment is advancing improvements in technical capabilities and rigorous cost management. In FY2026 (ending March 2026), orders received increased substantially by 19.6% year on year to ¥73,906 million, and the backlog of contracts in progress also grew by 51.2%.

Recent Overview

Orders received expanded substantially, up 19.6% year on year, and the backlog of contracts in progress grew by 51.2%

In FY2026 (ending March 2026), orders received in the Construction Business increased substantially to ¥73,906 million (up 19.6% year on year). In particular, orders received for building construction works surged to ¥30,928 million (up 42.2% year on year). Net sales increased to ¥58,885 million (up 3.4% year on year), but segment profit declined slightly to ¥6,825 million (down 1.9% year on year). An increase in cost of completed construction contracts (higher outsourcing costs and personnel expenses within expenses) pressured the profit margin. The period-end backlog of contracts in progress increased substantially to ¥44,383 million (up 51.2% year on year), providing a solid sales base for subsequent periods.

Key Products

service
Civil engineering works

Civil engineering works centered on track maintenance work and railway infrastructure development. The segment has a high ratio of negotiated (non-competitive) orders, providing a stable order base. In FY2026 (ending March 2026), net sales were flat at ¥39,597 million (down 0.3% year on year), while orders received increased to ¥42,978 million (up 7.4% year on year), and the backlog of contracts in progress grew to ¥15,246 million (up 28.5% year on year).

service
Building construction works

Orders expanded substantially against the backdrop of a recovery in private-sector construction investment. In FY2026 (ending March 2026), net sales increased to ¥19,289 million (up 12.1% year on year). Orders received surged to ¥30,928 million (up 42.2% year on year), and the backlog of contracts in progress grew substantially to ¥29,138 million (up 66.5% year on year), which is expected to contribute to sales in future periods.

Growth Drivers

  • Rapid expansion in orders received for building construction works, up 42.2% year on year, with a 66.5% increase in backlog (¥29,138 million) supporting sales in the coming period
  • Backlog for civil engineering works also increased 28.5% year on year (¥15,246 million), forming a stable sales base
  • Continuation of solid demand conditions for both public and private construction investment
  • Stable earnings base from continued order intake for railway infrastructure works for JR East
  • Strengthening of construction capacity through capital investment in large-scale track maintenance machinery and other equipment
  • Promotion of enhanced dynamic capabilities and growth strategy under the medium-term management plan "Transformation 2030," whose initial year is FY2026

Risks

  • Risk of sales concentration with East Japan Railway Company (which accounts for a high proportion of completed construction contract sales)
  • Risk of reduced profitability due to chronic shortages of skilled construction workers and rising labor costs and construction material prices
  • Risk of unstable procurement of certain materials and equipment due to tight supply-demand conditions for petrochemical products, among other factors
  • Risk of increased costs and constraints on construction capacity in responding to overtime work cap regulations
  • Uncertainty in estimates of total construction costs used in revenue recognition based on percentage of completion
  • Impact on domestic construction demand from trends in international economic policy and instability in the global situation

Last updated: June 24, 2026