Kaiju-Proximity Construction Permit

A proximity construction permit is required before building, extending or structurally altering any structure within 1,000 metres of a designated kaiju corridor centreline. This includes temporary structures standing longer than 30 days.

Reinforcement standards

Structures are assessed against the K-series reinforcement standards. The applicable minimum standard is determined by the evacuation zone of the build site:

• Zones 1-3 (outer band): standard K-1.
• Construction in Zone 4 requires reinforcement standard K-2.
• Zone 5 (corridor-adjacent): standard K-3. Residential new builds are not permitted in Zone 5.

The reinforcement standard declared on the application must meet or exceed the zone minimum. Applications declaring a lower standard are refused without assessment, and the fee is not refunded.

Fees and deadlines

The permit application fee is ¥45,000, payable on submission. It is not refundable if the application is refused.

Apply at least 10 business days before works begin. Breaking ground before determination is treated as building without a permit.