| Net sales of completed construction contracts | 705,058a | 654,516a |
| Cost of sales of completed construction contracts | -572,255a | -546,935a |
| Gross profit on completed construction contracts | 132,803a | 107,581a |
| Selling, general and administrative expenses | -71,823a | -64,903a |
| Operating profit | 60,979a | 42,677a |
| Non-operating income | — | — |
| Interest income | 962a | 394a |
| Dividends income | 2,619a | 2,335a |
| Other | 1,091a | 1,446a |
| Total non-operating income | 4,673a | 4,175a |
| Non-operating expenses | — | — |
| Interest expenses | -234a | -135a |
| Compensation expenses | -146a | -96a |
| Dismantlement cost | -155a | -179a |
| Other | -570a | -459a |
| Total non-operating expenses | -1,106a | -870a |
| Ordinary profit | 64,546a | 45,982a |
| Extraordinary income | — | — |
| Gain on sales of non-current assets | 496a | 136a |
| Gain on sales of investment securities | 2,157a | 3,349a |
| Other | 23a | 17a |
| Total extraordinary income | 2,677a | 3,503a |
| Extraordinary losses | — | — |
| Loss on retirement of non-current assets | -344a | -351a |
| Impairment losses | -305a | -2a |
| Other | -1a | -70a |
| Total extraordinary losses | -652a | -423a |
| Profit before income taxes | 66,571a | 49,062a |
| Income taxes-current | -21,589a | -17,162a |
| Income taxes-deferred | -2,143a | -1,531a |
| Total income taxes | -19,445a | -15,631a |
| Profit | 47,125a | 33,431a |
| Profit (loss) attributable to non-controlling interests | -125a | -122a |
| Profit attributable to owners of parent | 47,250a | 33,553a |