서일건설(주) / Seo Il co.
Seo Il co.'s KOBDi Score is 41.56 as of Sep 2026, down 2.32 points since Apr 2025; it rose in 5 and fell in 2 of the 12 monthly updates. As of Sep 2026 it is ahead of about 40% of companies in its industry, against 40% in Aug 2026 and 49% in Apr 2025. Its strongest position was 61% (Jul 2025) and its weakest 35% (Mar 2026).
A year earlier, in Aug 2025, its score was 44.01 and it was ahead of about 52% of companies in its industry.
| Sep 2026 | 41.56 | ahead of 40% |
| Aug 2026 | 41.53 | ahead of 40% |
| Jul 2026 | 41.51 | ahead of 39% |
| Jun 2026 | 41.35 | ahead of 37% |
| May 2026 | 41.35 | ahead of 36% |
| Apr 2026 | 41.35 | ahead of 36% |
| Mar 2026 | 41.30 | ahead of 35% |
| Feb 2026 | 41.30 | ahead of 35% |
| Dec 2025 | 41.30 | ahead of 35% |
| Aug 2025 | 44.01 | ahead of 52% |
| Jul 2025 | 46.15 | ahead of 61% |
| May 2025 | 43.88 | ahead of 50% |
| Apr 2025 | 43.88 | ahead of 49% |
| # | ||||
|---|---|---|---|---|
| (주)플러스공영 Plus Construction Co., Ltd. |
1–4 | Top 61% | ||
| 주식회사 태봉개발 | 1–4 | Top 61% | ||
| (주)신성건설 Sinsung construction |
1–4 | Top 61% | ||
| 주식회사 대성하우징 | 1–4 | Top 61% | ||
| (주)대림건설 DAELIM |
1–4 | Top 61% | ||
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Where is Seo Il co. located?
Seo Il co. is registered at 충청남도 서산시 동헌로, South Korea (postal code 31995).
What industry is Seo Il co. in?
Seo Il co. belongs to Construction › Other Specialty Construction › Glass and window construction.
How many employees does Seo Il co. have?
Seo Il co. has 1–4 employees.
What is Seo Il co.'s KOBDi Score?
41.56 as of September 2026, ahead of about 40% of companies in its industry.
Who are Seo Il co.'s competitors?
Similar companies include Plus Construction, 태봉개발 and Sinsung construction.
Which businesses are near Seo Il co.?
Businesses registered at the same postal code (31995) include SJTEC, 강태경세무회계사무소 and Daon Business solution. Most work in construction equipment operation, Korean general restaurant business and visiting welfare service provider.
Businesses near Seo Il co.
Registered at postal code 31995 (동헌로, 서산시). Most businesses here work in construction equipment operation, Korean general restaurant business and visiting welfare service provider.
- (주)에스제이텍SJTECCutting and similar processing industries · 동헌로 4-13 (same building)
- 강태경세무회계사무소Certified accounting business (bookkeeping agency) · 동헌로 4-7 (same building)
- 다온비지니스솔루션Daon Business solution동헌로 4-5 (same building)
- 더 스텝박스동헌로 4-11 (same building)
- 보라화원bola동헌로 4-15 (same building)
- 에뜨왈동헌로 4-7 (same building)
- 이룸인테리어동헌로 4-11 (same building)
- 자동차성형외과동헌로 4-3 (same building)
- 주식회사에스제이엠텍동헌로 4-13 (same building)
- 청풍냉난방Plumbing and cooling/heating equipment wholesale business · 동헌로 4-9 (same building)