Seongsu District 4
Overview
Seongsu District 4 (성수4지구) is a large-scale urban development project in Seongsu-dong 1-ga and 2-ga, Seongdong-gu, Seoul. It aims to transform the existing semi-industrial area into a complex hub integrating high-tech industry, business, residence, and culture, forming a key axis of Seoul's '2030 Seoul Plan' and the 'Seongsu-dong Renaissance' initiative. The project began in earnest in 2023 and targets completion in the early 2030s.
Main Details
Background and Purpose
Seongsu-dong was historically a semi-industrial area centered on manufacturing, with a concentration of small and medium-sized enterprises in sewing, printing, and machinery. However, following the decline of manufacturing in the Seoul metropolitan area after the 2010s, vacancy rates increased, and the area became relatively underdeveloped compared to neighboring Gangnam, Wangsimni, and Hannam-dong. Seoul aims to revitalize Seongsu-dong, including Seongsu District 4, as 'Seoul's Silicon Valley'. Key objectives include attracting high-tech industries, improving residential environments, expanding transportation infrastructure, and securing green spaces.
Scope and Scale
Seongsu District 4 covers approximately 500,000 m² (about 150,000 pyeong) in Seongsu-dong 1-ga and 2-ga. The project area currently contains a mix of factories, warehouses, and small shops, encompassing about 1,500 parcels. According to the development plan, it will be developed as a mixed-use site with a floor area ratio of 250–400% and a building coverage ratio of 50–60%, with buildings totaling approximately 2 million m² in gross floor area. Residential use will account for 30%, business and commercial use for 50%, and public and cultural facilities for 20%.
Key Facilities Plan
- High-tech Industry Cluster: A business and research complex to attract companies in AI, big data, biotechnology, and fintech. A startup incubator center and corporate R&D centers are planned.
- Residential Complex: Construction of approximately 5,000–7,000 households of multi-family housing (mixed sale and rental). Of these, 30% will be allocated as public rental housing to promote housing stability for low-income residents.
- Cultural and Commercial Facilities: A mixed-use shopping mall, cinema, performance hall, library, and exhibition hall. In particular, a pedestrian-oriented commercial street will be developed in connection with Seongsu-dong's 'Cafe Street'.
- Parks and Green Spaces: A central park and a linear park (including restoration of Seongsucheon Stream) covering about 100,000 m². Eco-friendly designs such as rooftop gardens and vertical greening will be introduced.
- Transportation Infrastructure: Expansion of pedestrian pathways connecting to Seongsu Station and Ttukseom Station on Subway Line 2, new bus routes, and expansion of bicycle paths. In addition, traffic congestion will be alleviated in connection with the 'Seongsu Station Undergroundization' project.
Implementation Schedule
- 2023: Designation of project site and public review
- 2024: Designation of urban development zone and establishment of development plan
- 2025: Approval of implementation plan and start of compensation and relocation
- 2026–2028: Infrastructure construction (roads, water supply and sewage, electricity, etc.)
- 2029–2032: Building construction and completion
- 2033 onwards: Phased occupancy and operation
Key Issues and Controversies
- Resident Opposition: Existing factory and shop owners and tenants have raised complaints about the scale of compensation and relocation measures. In particular, small business owners and manufacturers have expressed threats to their livelihoods.
- Environmental Issues: The cost and duration of soil remediation in the semi-industrial area may be longer than expected. Additionally, large-scale construction may cause fine dust and noise problems.
- Traffic Congestion: Seongsu-dong already experiences severe congestion during rush hours, raising concerns that further development will worsen traffic. Seoul is formulating a regional transportation improvement plan, but its effectiveness is debated.
- Impact on the Real Estate Market: Development expectations have led to sharp increases in nearby apartment and shop prices, increasing housing cost burdens for low-income residents. Calls for regulations to curb speculative demand have emerged.
Latest Trends
As of the second half of 2024, Seongsu District 4 has passed the review of the Seoul Metropolitan Government's Urban Planning Committee, and the development plan has been finalized. The goal is to obtain approval for the implementation plan in the first half of 2025, with land compensation negotiations currently underway. Recently, Seoul announced 'Seongsu-dong Renaissance 2.0', stating that it will significantly expand digital, cultural, and green infrastructure across Seongsu-dong, including Seongsu District 4. In particular, tax benefits and regulatory easing are being pursued to attract AI and semiconductor-related companies. Additionally, in March 2025, Hyundai Motor Group confirmed the establishment of a 'Future Mobility R&D Center' within Seongsu District 4, giving the project momentum. However, high interest rates and rising construction material costs have raised concerns about increased sale prices, and some construction companies are hesitant to participate. To resolve conflicts with residents, Seoul has formed a 'Cooperation Council' to discuss compensation standards and relocation measures.
Related Topics
- [[Seongsu-dong Renaissance]]
- [[Seoul Urban Regeneration Project]]
- [[Semi-industrial Area Redevelopment]]
- [[Seongsu Station Area Development]]
- [[Seoul-type Mixed-use Development Project]]
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