Essential Permit Checklist for Factory Expansion and Extension

When business is going well, naturally you need to increase production scale. However, expanding a factory requires permits that are just as complex as when first establishing the facility, which many companies overlook. The assumption that 'since we already have a factory, building a bit more should be easy' is dangerous.

First, you must distinguish between the legal differences of 'facility expansion' and 'building extension.' Building extension involves increasing the gross floor area of existing structures, requiring construction permits (or notifications) under Building Act Article 11. Facility expansion involves installing additional production equipment, which may require factory registration changes under the Industrial Cluster Development Act even without building area changes.

For building extensions, the key considerations are floor area ratio and building coverage ratio. If an existing factory is already close to the floor area ratio and building coverage ratio limits for its zoning designation, extension may be physically impossible. For example, if the building coverage ratio limit for planned management areas is 40% and an existing factory already uses 38% coverage, expansion capacity is severely limited.

Environmental regulations are also crucial. If the site area increases by 50% or more or production volume significantly rises, environmental impact assessments may need to be re-conducted. When capacities of air emission facilities or wastewater discharge facilities change, modification permits under the Clean Air Conservation Act and Water Environment Conservation Act are required. While the February 2024 revision to the Environmental Impact Assessment Act allowing online public hearings reduced procedural burden, environmental standards themselves remain strict.

Facility expansion within industrial complexes involves additional procedures. You must file advance notification of expansion plans to the industrial complex management authority and receive approval. Since industrial complexes have established ratios for industry composition and environmental standards, expansions exceeding these criteria may not be permitted.

Here's a practical tip: when initially establishing a factory, it's wise to consider future expansion possibilities. By maintaining margins in floor area ratios and building coverage ratios, and securing environmental discharge permit capacities beyond actual usage, permit procedures become much smoother when expanding later. A slightly larger initial investment can save significant costs down the road.

The consolidated processing system can also be utilized for expansions and extensions. When applying for factory establishment approval changes under the Industrial Cluster Development Act, you can simultaneously process construction permit changes and environmental-related permit changes through consolidated processing. This can significantly reduce time compared to obtaining each permit individually.