YOUNSUNG CONSTRUCTION CO.,LTD (주식회사 윤성토건)
Business Registration No.: 3088106547 | Unlisted Corporate Supplier
| English Name (KONEPS / DART) | YOUNSUNG CONSTRUCTION CO.,LTD |
|---|---|
| Korean Legal Name | 주식회사 윤성토건 |
| Business Registration No. | 3088106547 |
| Established Date | 1995-09-01 |
| Region | 세종특별자치시 장군면 |
| Address (KO) | 세종특별자치시 장군면 영평사길 33,2층 |
| Homepage | N/A |
| Manufacturer Classification | supplier (공급) |
| Reported Employees | 12 (Self-reported employee count at Korea ON-Line E-Procurement System (KONEPS) registration; may differ from National Pension Service (L1) subscriber counts.) |
| source_url | https://www.g2b.go.kr |
| verified_at | 2026-11-02T04:36:11.608Z |
Public procurement (last 12 months)
Contracts first signed in the last 12 months.
The 12-month window is by original contract signing date: it covers contracts first signed in the period, and excludes amendments registered in the period to contracts signed earlier. Amounts are in KRW from Korea's Public Procurement Service (KONEPS). The 12-month total counts sole contracts in full and joint contracts by the supplier's share; joint contracts without a published share are counted but not summed. Multi-year contracts count only the current-period amount. Unit-price (framework) contracts are reported separately because their values are ceilings, not spend.
| Aggregation Period | 2025-11-01 to 2026-10-31 (basis: original_signed_date) |
|---|---|
| 12-Month Procurement Amount | KRW 2,553,512,000 |
| 12-Month Contract Count | 6 (Joint contracts: 1) |
| Unit-Price (Framework) Contracts (Reported Separately) | 0 contracts | Ceiling: KRW 0 |
| Procurement Source | https://www.g2b.go.kr (verified: 2026-11-02T04:36:11.608Z) |
By Procurement Category
| Category | Contracts | 12M Counted Amount (KRW) |
|---|---|---|
| Goods (물품) | 0 | KRW 0 |
| Construction (공사) | 4 | KRW 2,350,908,000 |
| Services (용역) | 2 | KRW 202,604,000 |
| Foreign Procurement (외자) | 0 | KRW 0 |
By Contract Type
| Contract Type | Contracts | Supplier Share / Current Amount (KRW) | Total Contract Ceiling / Multi-year Total (KRW) |
|---|---|---|---|
| Lump-sum / Standard (총액·일반) | 4 | KRW 452,627,000 | KRW 452,627,000 |
| Multi-year / Continuing (장기·계속비) | 2 | KRW 2,100,885,000 | KRW 25,254,036,780 |
| Unit-price / Framework Ceiling (단가·제3자단가 — excluded from 12M total) | 0 | KRW 0 | KRW 0 |
| Unclassified / Zero-amount (기타) | 0 | KRW 0 | KRW 0 |
Top 5 Government Buyers
| Buyer (Korean Legal Name) | Agency Code | Contracts | 12M Amount (KRW) |
|---|---|---|---|
| 국토교통부 대전지방국토관리청 논산국토관리사무소 | 1613229 | 1 | KRW 1,297,285,000 |
| 한국교원대학교 | 7001220 | 1 | KRW 803,600,000 |
| 세종특별자치시 상하수도사업소 | 5690421 | 3 | KRW 272,351,000 |
| 과학기술정보통신부 우정사업본부 충청지방우정청 | 1723399 | 1 | KRW 180,276,000 |
Recent Contracts (up to 6)
| Signed Date | Contract No. (KONEPS) | Contract Title (KO) | Category / Type | Buyer (KO) | Contract Amount (KRW) | Participation |
|---|---|---|---|---|---|---|
2026-10-12 |
R26TA02287039 |
수질복원센터A1 총인처리설비 섬유여재 교체 및 세척 | construction / lump_sum |
세종특별자치시 상하수도사업소 | KRW 69,747,000 |
Sole (100%) |
2026-07-08 |
R26TA02032890 |
한국교원대학교 부설체육중고등특수학교 신축 공사(건축)(장기 2차) | construction / multi_year |
한국교원대학교 | KRW 4,018,000,000 |
Joint (20%) |
2026-05-14 |
R26TA01843973 |
2026년도 세종시 비점오염저감시설 유지관리용역 | services / lump_sum |
세종특별자치시 상하수도사업소 | KRW 75,388,000 |
Sole (100%) |
2026-05-12 |
R26TA01826326 |
2026년 수질복원센터B 분리막 회복세정 용역 | services / lump_sum |
세종특별자치시 상하수도사업소 | KRW 127,216,000 |
Sole (100%) |
2026-02-09 (chg: 2026-04-06) |
R26TA01444539 |
세종집현동우체국 창구 개설공사 | construction / lump_sum |
과학기술정보통신부 우정사업본부 충청지방우정청 | KRW 180,276,000 |
Sole (100%) |
2025-12-29 (chg: 2026-06-15) |
R25TA01288736 |
2024년 국도36호선 세종 제설 및 비축창고 신축공사(3차) | construction / multi_year |
국토교통부 대전지방국토관리청 논산국토관리사무소 | KRW 1,297,285,000 |
Sole (100%) |
Source & Disclaimer
source_url: https://www.g2b.go.kr | verified_at: 2026-11-02T04:36:11.608Z
Data from Korea's Public Procurement Service (KONEPS contract and supplier records) via data.go.kr. Corporate suppliers only; sole proprietors are excluded. Not investment advice.