What is the limit on cut and fill?
As per Planning (Residential Zones) Technical Specifications 2026 The ground level can only be changed by up to 1.5 metres within 1.5 metres of a side or rear boundary. This is measured by comparing the original ground level with the finished ground level after the work is completed. Excavation for a basement does not count towards this limit.
Reference: Planning (Residential Zones) Technical Specifications 2026 (NI2026-303), Assessment Outcome 22.1- Planning (Residential Zones) Technical Specifications 2026
Short Answer
The total amount of cut and fill within 1.5 metres of a side or rear boundary must not exceed 1.5 metres. This limit does not include excavation for a basement.
Detailed Explanation
The Planning (Residential Zones) Technical Specifications 2026 limit the total change in ground level from cut and fill to 1.5 metres within 1.5 metres of a side or rear boundary. The total change is measured as the cumulative difference between the Datum Ground Level (DGL) and the Finished Ground Level (FGL). Excavation for a basement is not included when calculating this limit.
No minimum block size does not remove the need for planning assessment.
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