Statement of Environmental Effects for a Ku-ring-gai Council DA

A Statement of Environmental Effects (SEE) is a mandatory document for every development application (DA) lodged with Ku-ring-gai Council. It must demonstrate how your proposal responds to the Ku-ring-gai Local Environmental Plan 2015, the Ku-ring-gai Development Control Plan, the heritage and biodiversity constraints that define this upper North Shore council area, and the five-part assessment criteria under s 4.15(1) of the Environmental Planning and Assessment Act 1979. Get these elements wrong and council will request additional information — delaying your approval.

What Planning Instruments Govern Ku-ring-gai DAs?

Every DA in Ku-ring-gai is assessed against a layered set of planning instruments — the LEP sets the framework, the DCP provides the detail, and state law defines what your SEE must contain.

The Ku-ring-gai Local Environmental Plan 2015 is the operative local environmental plan across the Ku-ring-gai local government area. It is a standard instrument plan made under the Environmental Planning and Assessment Act 1979 and was consolidated in 2021, integrating the former Ku-ring-gai LEP (Local Centres) 2012 and the Ku-ring-gai Planning Scheme Ordinance into a single document. The LEP 2015 sets the land use zones, height limits, floor space ratios, heritage schedules, and the principal development standards against which every DA is assessed.

Beneath the LEP, the Ku-ring-gai Development Control Plan provides the detailed controls — heritage character guidelines, tree and vegetation controls, design standards for residential alterations and new dwellings, landscaping requirements, and drainage provisions. Where the DCP and LEP interact, the LEP prevails; but council's assessment officers apply the DCP provisions closely, and your SEE must address relevant chapters in detail.

The mandatory content of a SEE is set by Schedule 1, Part 1 of the EP&A Regulation 2021. This is the legal floor for every DA in NSW, regardless of council. It requires your SEE to describe the site, the proposed development, all relevant planning instruments and policies, the likely impacts on the environment and the locality, and the suitability of the site for the proposed use.

Assessment of your DA by council will apply the five-part framework under s 4.15(1) of the EP&A Act 1979: (a) applicable environmental planning instruments, (b) any DCP, (c) the likely impacts on the natural and built environments and social and economic impacts, (d) the suitability of the site, and (e) the public interest. Your SEE must speak to each head of consideration.

State Environmental Planning Policies (SEPPs) may also apply — notably the Biodiversity Conservation SEPP and housing SEPPs. Verify which SEPPs are live on your specific lot before finalising your SEE.

Heritage — Conservation Areas and Items

Heritage is the most frequently encountered constraint in Ku-ring-gai. Conservation areas are widespread across the upper North Shore — Federation and Interwar streetscapes are the norm, not the exception, in suburbs like Killara, Lindfield, Roseville, and Gordon.

Ku-ring-gai contains a large number of heritage items and heritage conservation areas (HCAs) listed in Schedule 5 of the Ku-ring-gai LEP 2015. These areas reflect the Federation and Interwar character that defines the upper North Shore — large garden lots, red-brick and rendered bungalows, federation cottages, and garden suburb street patterns. The HCAs span many of the LGA's principal suburbs including Gordon, Killara, Lindfield, Roseville, Wahroonga, and Pymble.

When a DA affects a heritage item, or when development is proposed within or immediately adjacent to a heritage conservation area, a heritage impact statement is required. This document must:

• Assess the heritage significance of the item or conservation area
• Describe the proposed works in detail
• Evaluate the likely impacts of those works on heritage significance
• Propose mitigation measures where impacts are identified

The Ku-ring-gai DCP provides character guidelines for heritage areas — covering materials, colours, fenestration, roof pitch, setbacks, and fencing. Council's heritage advisor reviews heritage impact statements as part of the DA assessment. Poorly prepared statements are among the most common causes of requests for additional information.

• Heritage impact statement · Streetscape analysis · Materials and finishes schedule · Heritage significance assessment · Mitigation measures

Where works are minor (such as internal alterations that do not affect heritage fabric visible from the street), the heritage impact assessment within the SEE itself may suffice. However, for any works that alter the exterior, change the roofline, affect significant curtilage plantings, or involve demolition, a stand-alone heritage impact statement by a suitably qualified heritage consultant is expected.

Biodiversity — Blue Gum High Forest and Threatened Communities

Ku-ring-gai hosts two nationally significant threatened ecological communities — Blue Gum High Forest and Sydney Turpentine-Ironbark Forest. Development proposals near remnant patches must address biodiversity impacts carefully.

Blue Gum High Forest (BGHF) is listed as a critically endangered ecological community under both the Biodiversity Conservation Act 2016 (NSW) and the Environment Protection and Biodiversity Conservation Act 1999 (Commonwealth). It is characterised by Sydney Blue Gum (Eucalyptus saligna) and Blackbutt (Eucalyptus pilularis) on fertile soils. Significant remnants occur within and adjacent to Ku-ring-gai, particularly in association with bushland reserves.

Sydney Turpentine-Ironbark Forest (STIF) is also listed as a critically endangered ecological community. Remnants are scattered through the suburbs of Sydney's north and occur in some parts of Ku-ring-gai.

Where a development proposal triggers the Biodiversity Offset Scheme (BOS) threshold under the Biodiversity Conservation Act 2016 — because it involves clearing vegetation above a certain area or affects mapped sensitive biodiversity values — a Biodiversity Development Assessment Report (BDAR) must accompany the DA. The BDAR is prepared by an accredited biodiversity assessor and must quantify biodiversity impacts and calculate the offset credit requirement.

Even where the BOS threshold is not triggered, your SEE must address likely impacts on any threatened species, ecological communities, or their habitats observed or likely on the site.

Tree Canopy Controls

Ku-ring-gai is known for its tree canopy — and council actively protects it. The DCP tree controls catch most significant tree removal and construction in proximity to protected trees, requiring specialist reports before council can assess the application.

Ku-ring-gai's tree canopy is protected through the DCP tree controls, which identify significant trees and set out the approvals process for removing, pruning, or building near them. Key SEE obligations for proposals involving trees include:

• Identifying all trees on and in the vicinity of the site
• Assessing whether any trees are subject to DCP controls
• Where removal is sought, providing arboricultural justification
• Demonstrating protection measures during construction for retained trees
• Submitting a landscape plan that retains canopy and, where required, provides replacement planting

An arborist report prepared by a qualified arborist (AQF Level 5 minimum) is required for most applications involving tree removal or construction near significant trees. The report must assess tree health, structure, significance, and impact of proposed works.

A landscape plan is typically required alongside, showing retained canopy trees, tree protection zones, proposed planting, and hard and soft landscape works.

Building envelopes on Ku-ring-gai lots often need to be designed around significant trees to avoid tree removal or root zone encroachment. Early engagement with an arborist before finalising your building design can prevent costly late-stage redesigns.

Common DA Types in Ku-ring-gai

Most Ku-ring-gai DAs fall into four common categories — each with its own SEE obligations, specialist report requirements, and assessment sensitivities.

1. Heritage Alterations and Additions Alterations and additions to dwellings within heritage conservation areas are among the most frequently lodged DAs in Ku-ring-gai. The SEE must address heritage impact, streetscape compatibility, materials, and DCP character guidelines. A heritage impact statement is usually required.

2. New Dwelling — Garden Lot New dwellings on Ku-ring-gai's larger garden lots must address height, setbacks, FSR, tree canopy, landscaping, and privacy impacts. Heritage may apply where the site is within an HCA or adjoins a heritage item.

3. Tree and Vegetation Works Applications to remove or prune significant trees require an arborist report, tree protection plan, and landscape plan. The SEE must justify the removal and demonstrate that canopy loss is minimised.

4. Bushfire-Affected Development Where land is mapped as bushfire prone — typically near reserves and national parks — a bushfire assessment in accordance with Planning for Bushfire Protection is required. Asset protection zone dimensions and construction standards must be addressed.

For a full list of required DA documents, see the DA lodgement checklist on instantSEE.

When Does the Sydney North Planning Panel Decide?

Most Ku-ring-gai DAs are determined by council officers or the Ku-ring-gai Local Planning Panel — but larger applications reach the Sydney North Planning Panel.

Development applications that exceed the capital investment value (CIV) threshold set by the Minister, or that involve regionally significant development as defined by the Infrastructure SEPP, are determined by the Sydney North Planning Panel rather than council. Check current thresholds before lodging to confirm the correct consent authority for your proposal.

The Ku-ring-gai Local Planning Panel determines applications involving certain types of sensitive development, including applications where a submission has been received that raises a planning objection, applications for demolition in a heritage conservation area, and other categories set by the Panel Proceedings Policy.