HZ Construction Solutions v Ku-ring-gai Council — Court approves St Ives dual-occupancy redevelopment by consent

Case
HZ Construction Solutions Pty Ltd v Ku-ring-gai Council
Court
Land and Environment Court of New South Wales
Judge
Elizabeth Espinosa (of New South Wales, 2020)
Date Decided
9 October 2026
Citation
[2026] NSWLEC 1670
Topics
development appeal, dual occupancy, subdivision, planning consent

Background

HZ Construction Solutions appealed Ku-ring-gai Council’s refusal of a development application concerning 405–407 Mona Vale Road, St Ives. The proposal would adjust the boundary between two existing Torrens title lots so that both would front Richmond Avenue rather than Mona Vale Road, demolish existing structures, and construct an attached dual occupancy on each resulting lot.

The reconfigured lots would each be 687.9 square metres, below the 930 square metre minimum subdivision lot size in the Ku-ring-gai Local Environmental Plan 2015. The site had formerly operated as a commercial nursery and was subject to a remediation action plan. The parties attended a conciliation conference under s 34 of the Land and Environment Court Act 1979 (NSW) and agreed on a consent outcome.

The Court’s Holding

Commissioner Espinosa upheld the appeal and granted development consent subject to conditions. Under s 34(3), the Court was required to give effect to the parties’ agreed decision once satisfied that it was a decision the Court could properly make; the Commissioner expressly did not undertake a merits assessment of the issues originally disputed.

The Court accepted that the clause 4.6 variation adequately justified departure from the minimum lot-size standard. The boundary adjustment would move vehicle access to the lower-order Richmond Avenue, improve residential amenity and northerly aspect, and remain consistent with the existing subdivision pattern. The proposed height and floor-space ratio complied with applicable standards, and the agreed conditions required remediation and validation so the land would be suitable for residential use. The applicant was also ordered to pay the Council $21,000 in costs thrown away by the amendment to the application.

Key Takeaways

  • A Class 1 appeal may be resolved through a s 34 conciliation agreement if the agreed outcome is within the Court’s lawful functions.
  • The Court accepted a minimum-lot-size variation for a boundary realignment that improved access and amenity without changing the established lot-size pattern.
  • Residential consent on potentially contaminated former nursery land was supported by a remediation action plan and conditions requiring remediation and validation.

Why It Matters

The decision illustrates the Land and Environment Court’s consent-order role after a successful conciliation conference. Its task was not to decide the original planning merits afresh, but to confirm that the parties’ agreed grant of consent could lawfully be made.

It also shows how a clause 4.6 variation may support an undersized subdivision where the practical effect is to improve safe access away from a classified road and deliver a planning outcome considered appropriate for the site.

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