C1 Company (주식회사 씨원컴퍼니)
Business Registration No.: 5088140335 | Unlisted Corporate Supplier
| English Name (KONEPS / DART) | C1 Company |
|---|---|
| Korean Legal Name | 주식회사 씨원컴퍼니 |
| Business Registration No. | 5088140335 |
| Established Date | 2015-02-06 |
| Region | 서울특별시 서초구 |
| Address (KO) | 서울특별시 서초구 방배로 242, 5층 (방배동, 서리풀 스퀘어) |
| Homepage | N/A |
| Manufacturer Classification | supplier (공급) |
| Reported Employees | 14 (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 6,394,171,364 |
| 12-Month Contract Count | 15 (Joint contracts: 2) |
| Unit-Price (Framework) Contracts (Reported Separately) | 2 contracts | Ceiling: KRW 952,777,280 |
| 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) | 15 | KRW 6,394,171,364 |
| Services (용역) | 0 | KRW 0 |
| 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) | 10 | KRW 1,700,600,880 | KRW 1,700,600,880 |
| Multi-year / Continuing (장기·계속비) | 3 | KRW 4,693,570,484 | KRW 14,136,271,380 |
| Unit-price / Framework Ceiling (단가·제3자단가 — excluded from 12M total) | 2 | KRW 952,777,280 | KRW 952,777,280 |
| Unclassified / Zero-amount (기타) | 0 | KRW 0 | KRW 0 |
Top 5 Government Buyers
| Buyer (Korean Legal Name) | Agency Code | Contracts | 12M Amount (KRW) |
|---|---|---|---|
| 서울교통공사 | B553766 | 1 | KRW 4,145,732,684 |
| 서울특별시 도로사업소 북부도로사업소 | 6112821 | 1 | KRW 809,754,980 |
| 서울특별시 강동구 | 3240000 | 2 | KRW 474,641,800 |
| 서울특별시 동대문구 | 3050000 | 1 | KRW 410,337,900 |
| 서울주택도시개발공사 | Z003688 | 5 | KRW 237,142,000 |
Recent Contracts (up to 15)
| Signed Date | Contract No. (KONEPS) | Contract Title (KO) | Category / Type | Buyer (KO) | Contract Amount (KRW) | Participation |
|---|---|---|---|---|---|---|
2026-08-27 |
R26TA02171247 |
천호-1 소구역 하수관로 정비공사[1권역] (장기계속) 4차 | construction / multi_year |
서울특별시 강동구 | KRW 2,174,029,000 |
Joint (20%) |
2026-08-20 |
R26TA02159663 |
2호선 건대입구역 등 2역 승강편의시설 설치공사(71공구) | construction / multi_year |
서울교통공사 | KRW 4,837,494,380 |
Joint (85.7%) |
2026-07-30 |
R26TA02106993 |
월계사슴2단지 201동 306호 외 1세대 공가 시설물 보수공사 | construction / lump_sum |
서울주택도시개발공사 | KRW 47,015,000 |
Sole (100%) |
2026-07-22 |
R26TA02081626 |
2026년 공영차고지 시설물 정비공사(연간단가) | construction / unit_price |
서울시설공단 | KRW 75,402,280 |
Sole (100%) |
2026-07-21 |
R26TA02070258 |
구파발10-2단지 1002동 외 1개동 옥상 슁글 교체 및 우레탄 방수공사 | construction / lump_sum |
서울주택도시개발공사 | KRW 45,777,000 |
Sole (100%) |
2026-07-08 |
R26TA02039386 |
[일반수선]구파발9-1단지(은평3-3)913동 지상주차장 우수매립관 교체공사 | construction / lump_sum |
서울주택도시개발공사 | KRW 48,361,000 |
Sole (100%) |
2026-06-30 (chg: 2026-08-31) |
R26TA02015866 |
가래여울1수문 외2 보수·보강 공사 | construction / lump_sum |
서울특별시 강동구 | KRW 39,836,000 |
Sole (100%) |
2026-06-23 (chg: 2026-07-09) |
R26TA01996834 |
김포공항 국내선 버스전용차로 노면표시공사 | construction / lump_sum |
한국공항공사 김포공항 | KRW 49,434,000 |
Sole (100%) |
2026-06-02 (chg: 2026-08-12) |
R26TA01926312 |
금옥여고 본관동 외벽방수 및 예지관 옥상방수공사 | construction / lump_sum |
서울특별시교육청 서울특별시강서양천교육지원청 | KRW 154,096,000 |
Sole (100%) |
2026-05-29 |
R26TA01913861 |
청계천복개(좌안) 등 2개시설 보수공사 | construction / lump_sum |
서울특별시 도로사업소 북부도로사업소 | KRW 809,754,980 |
Sole (100%) |
2026-04-30 |
R26TA01811958 |
중계4단지 공용부 시설물 보수공사 | construction / lump_sum |
서울주택도시개발공사 | KRW 47,986,000 |
Sole (100%) |
2026-03-24 (chg: 2026-09-14) |
R26TA01655026 |
2026년 포장도로 유지보수공사(연간단가) | construction / unit_price |
서울특별시 송파구 | KRW 877,375,000 |
Sole (100%) |
2026-01-09 (chg: 2026-06-22) |
R26TA01327106 |
2025년 서부관내 노면표시 정비공사 | construction / multi_year |
서울특별시 서울아리수본부 서부수도사업소 | KRW 113,032,000 |
Sole (100%) |
2025-12-11 |
R25TA01204353 |
은평구 불광동 480-336번지 옹벽 균열 보수 공사 | construction / lump_sum |
서울주택도시개발공사 | KRW 48,003,000 |
Sole (100%) |
2025-11-10 (chg: 2026-06-29) |
R25TA01055438 |
정릉천 하중도 환경정비 공사 | construction / lump_sum |
서울특별시 동대문구 | KRW 410,337,900 |
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.