Urban Canopy and Heat Resilience Policy Framework

Draft for committee — implementation instrument

Urban Canopy and Heat Resilience Policy Framework

Auckland — treating remaining mature canopy as climate infrastructure under current RMA constraints and the incoming Planning / Natural Environment regime

Status: Draft policy framework for elected members and officers. Not a plan change. Not a substitute for Schedule 10. Does not restore blanket urban tree protection — Parliament removed that power.

Prepared: September 2026 · Audience: Policy and Planning Committee, Parks and Community, Regulatory Services, Healthy Waters, Auckland Transport

1. The legal box — read this first

A framework that assumes Council can stop a landowner felling an unscheduled tree on an urban environment allotment is fiction. Build inside the statute that exists.

Resource Management Act 1991, s 76(4A)–(4D): on an urban environment allotment (generally ≤4,000 m², reticulated water and sewer, with a dwelling or commercial/industrial building, not a reserve), a district rule may only restrict felling, trimming, damaging or removal if the tree or group is described in a schedule and the allotment is identified by street address or legal description.

Auckland Unitary Plan: Schedule 10 / Chapter D13 for notable trees; E15 vegetation and biodiversity; E16 open space trees; E17 road trees. Permitted private removal of unscheduled urban trees is the default.

Plan Change 120: concentrates housing yield in walkable catchments, centres, frequent transit and CRL stations. Notable trees remain a qualifying matter only to the extent necessary. Council’s own s 32 accepts notable-tree removal where intensification would be significantly compromised.

Plan Change 113: withdrawn after the Minister refused an exemption. 174 individual trees and 29 groups did not get onto Schedule 10. Council is not currently initiating notable-tree plan changes.

Incoming Planning Bill and Natural Environment Bill: intent to move away from individually listing urban trees toward significant historic heritage value, plus regulatory relief where protective rules significantly impair reasonable use. That chills new private listing.

This framework therefore does four things only: (1) stop losing the trees Council actually owns; (2) lock trees onto title when a consent or subdivision exists; (3) buy or incentivise retention on private land; (4) cut heat with surfaces and shade where trees will not be there in time.

2. Problem Council must name

Urban Auckland canopy is about 18 percent against a 30 percent by 2050 Ngahere target. Private land is 64 percent of the urban area, holds about 61 percent of canopy, and is only 14 percent canopied. Public open space is 29 percent canopied. Between 2013 and 2016/18 LiDAR, private land lost 176 hectares while roads gained 160 hectares and parks 84 hectares. City-wide net change sat inside error. The headline 18 percent hid a tenure swap.

Most private urban removals never become a resource consent. They are permitted. Certificates of Compliance confirm that. Nomination to Schedule 10 does not freeze a tree. About one percent of stock is scheduled. Leafy isthmus suburbs have high canopy and low statutory protection. South Auckland has a low base and high heat.

Auckland’s urban heat assessment found city-centre night urban heat island up to 3°C versus rural, and up to 3°C between blocks on a peak day. International air-temperature studies cluster around 0.8°C cooler air for a 10 percentage-point canopy increase in heat-prone grids, and 1–2°C under street-tree rows. Peak electricity load typically rises 0.45–4.6 percent per +1°C. On an Auckland-region peak near 2,100 MW that is roughly 10–100 MW per degree; a mid estimate is about 40 MW/°C if applied system-wide. Catchment-scale canopy loss produces a fraction of that, plus local transformer and public-health load.

3. Outcomes — what success is allowed to mean

Do not keep 30 percent by 2050 as the sole KPI. It is not deliverable on private urban lots under current law. Replace it with a split target that officers can be held to.

3.1 Binding outcome statements

• O1 Public estate: No net loss of canopy ≥3 m on roads and parks in any local board, measured on a three-year LiDAR cycle. Replacement for unavoidable public-tree removal must be specified as projected canopy at year 10, not stem count.
• O2 Heat equity: By 2032, every 300 m heat-assessment cell that is both above the city-centre mean summer maximum and below 15 percent canopy must have a funded large-grade street or park planting programme underway.
• O3 Consent pathway: Where Council has a consent hook, 100 percent of applications that remove or work a regulated tree include an arboricultural assessment, a genuine alternatives test, and a 10-year canopy replacement specification.
• O4 Private stock: Stabilise private canopy loss rate relative to the 2013–18 LiDAR baseline in the six highest-pressure boards (Albert-Eden, Waitematā, Ōrākei, Puketāpapa, Whau, Devonport-Takapuna). Stabilise does not mean increase. It means stop accelerating.
• O5 Data: Publish a 2024 LiDAR canopy height model change product by tenure, zone and local board within 12 months of this framework being adopted.

3.2 Scenario band Council should plan against

| Band | Private catchments | City canopy % | Local hot-afternoon air | | --- | --- | --- | --- | | Low loss | Modest thinning; covenants used | 18–19% | +0.2 to +0.5°C on worst blocks | | Central (plan case) | Hundreds of ha mature private canopy gone | 16–18% | +0.5 to +1.2°C on redeveloped streets | | High loss | Heritage-only listing; fast PC120 build | 15–17% | +1 to +2°C air on those blocks |

Plan infrastructure and planting against the central band. Test network and heat-health plans against the high band. Do not budget as if the low band is the default.

4. Four-pillar operating model

Pillar A — Know (make the next LiDAR cycle decision-grade)

LiDAR flown in 2024 is not a canopy product until Council builds the canopy height model and change detection. The Ngahere Strategy already asked for a three-year cycle. Deliver it.

• Commission 2016/18 versus 2024 CHM change for all 21 local boards, cut by tenure (private / road / park / other public), AUP zone, and PC120 walkable catchment.
• Integrate the Arup 300 m heat layer with the CHM. Publish a public heat-and-canopy viewer.
• Maintain a live overlay of: Schedule 10, SEA, precinct vegetation, consent notices, covenants Council knows about, and open nominations.
• Track Certificates of Compliance issued for tree removal. If Regulatory Services does not code them, start coding them. That is the private-loss ledger.

Owner: RIMU + Geospatial, with Regulatory Services feeding CoC and consent counts quarterly.

Pillar B — Protect (only the tools that still bind)

B1 Public trees — two-gate rule

Road and open-space trees already require restricted discretionary consent above 4 m / 400 mm girth, plus Tree Owner Approval. Enforce both. Healthy functioning street trees are not a residual after a vehicle crossing is drawn.

• Adopt a public-tree removal test: safety, pest/biosecurity, or infrastructure that cannot be redesigned. Amenity preference and view shafts that are not a scheduled overlay are not enough.
• AT and Healthy Waters must bring Tree Owner Approval in at preliminary design, not at 90 percent drawings.
• Every approved public removal carries a year-10 canopy replacement on the same corridor or the same heat cell, funded in the same project budget.

B2 Scheduled and overlay trees

• Process the nomination backlog to a published yes/no with reasons. A queue without a plan change is a fiction of protection.
• When the new national instruments allow heritage-value trees to be identified, run one focused schedule update for trees that meet the new statutory test. Do not wait for a full plan review.
• On rezoning and private plan changes, require an SEA / notable / precinct vegetation screen before notification. Council already said this after high-profile CoC clears. Make it a standing s 32 requirement.
• Do not promise Schedule 10 will hold the isthmus urban forest. It will not.

B3 Title instruments

A covenant or consent notice binds a successor. A local board resolution does not.

• Standard consent-notice template: identified tree(s), protected root zone, no-build envelope, replacement if the tree dies of natural causes, enforcement entry.
• Use E38 subdivision to keep building platforms outside notable root zones as a default, not an afterthought.
• Offer a simple Council-held covenant product for landowners who want to lock a specimen tree without waiting for a schedule. Cheap, fast, recorded on title.

Pillar C — Grow (replace function, not stem counts)

Public planting rule: priority order is (1) heat cell + low canopy + high deprivation, (2) PC120 catchments that are losing private canopy, (3) ecological corridors. Parks that already sit at 29 percent cover are not the first call on large-grade stock.

• Specification: minimum planting grade and a 10-year canopy target per site. Stop reporting 480,000 “trees and plants” as if seedlings equal a felled 18 m tree.
• Private incentive, not a fake rule: a targeted grant or rates remission for retaining a verified large tree in a mapped heat cell or PC120 catchment. Cap it. Audit it. Expect partial uptake.
• Front-yard large-grade offer: Council supplies and establishes one large-grade street-appropriate tree on private frontage in nominated heat streets, with a maintenance bond or rates adjustment. Voluntary.
• Volume: lift large-grade street planting well above the current ~2,000 a year in the priority cells. Seedling mass-planting stays in parks and restoration sites, not as the urban-forest KPI.

Pillar D — Cool (when the tree will not be there)

A replacement sapling does not cool a 2030 heatwave. Surfaces can.

• Cool-roof and high-albedo specification for Council buildings and, via plan standards where lawful, for new apartments in heat cells.
• Reseal programme: lighter chip or coating on the hottest, least-canopied collector roads.
• Permeable paving and shade structures on town-centre streets where underground services kill large trees.
• Building-performance advocacy: insulation, external shading, dual-aspect ventilation in the Building Code / consent guidance for new multi-unit housing. Trees are not the only cooling plant.

5. Decision rules for officers

Write these into the practice notes for planners, AT designers and parks arborists. If it is not a rule an officer can apply on a Tuesday, it is a press release.

| Situation | Required action | | --- | --- | | Unscheduled tree, urban allotment, no overlay | Tell the owner the activity is permitted. Offer CoC. Offer the covenant/grant product. Do not invent a discretion Council does not have. | | Notable tree / SEA / E15 trigger | Full arboricultural AEE. Alternatives test. Intensification is relevant but not a rubber stamp. Specify 10-year canopy replacement if removal is granted. | | Road or park tree | E16/E17 + Tree Owner Approval. Redesign first. If removal approved, same-project funded replacement to year-10 canopy in the same heat cell. | | Subdivision or multi-unit consent | Survey existing ≥3 m canopy. Retain unless the building cannot reasonably be sited otherwise. Consent notice on retained trees. Deep-soil standard enforced, not landscaped. | | Rezoning / private plan change | SEA, notable, precinct and heat-cell screen in s 32. If mature stands exist, lock them with precinct rules or title instruments before upzoning. | | CoC application for tree removal | Issue if lawful. Record species, height, location, heat-cell ID. Quarterly public dashboard. Lawful does not mean invisible. |

6. Governance and money

6.1 Accountable owner

A single Senior Responsible Officer at third-tier or above, spanning Parks (urban forest), Plans and Places, Regulatory Services and Auckland Transport. The Ngahere Strategy failed as a shared aspiration. This framework is an operating programme with one throat to choke.

Report quarterly to Policy and Planning Committee: public canopy removals approved, CoCs issued for trees, consent conditions imposed, large-grade trees established in priority heat cells, grant uptake, LiDAR product status.

6.2 Funding stack

• Capex: large-grade street trees and soil cells in priority heat cells — funded as climate and transport amenity, not as leftover parks planting.
• Opex: establishment watering for three summers. A dead year-2 tree is a failed project, not a statistic.
• Regulatory: one additional processing track for tree-related consents is not required if practice notes are clear. Do not build a new bureaucracy.
• Incentives: small targeted grant, rates remission, or development-contribution rebate for verified retained canopy on consented schemes. Pilot in two catchments before city-wide.

Do not raid the Ngahere seedling budget and call it large-tree replacement.

6.3 What Council should ask Wellington for

Advocacy is not a substitute for doing the public-land job. It is a parallel track.

• National direction that still allows listing of urban trees with demonstrated climate-infrastructure value (heat, stormwater, known specimen function), not heritage only.
• Interim protection for nominated trees that meet a published threshold, for a fixed period while a schedule change runs. The current nomination-to-chainsaw gap is the worst part of the 2013 design.
• Regulatory relief that does not treat an ordinary notable-tree listing as a compensable taking.

Until that arrives, stop telling the public that Council will “protect urban trees” as if s 76 did not exist.

7. Twenty-four month sequence

| Window | Deliverable | | --- | --- | | Days 1–90 | Adopt this framework. Appoint SRO. Issue planner / AT / parks practice notes. Start CoC coding. Publish nomination-backlog status. | | Months 3–9 | 2016/18–2024 LiDAR CHM change by tenure and catchment. Heat-cell priority map adopted. Public-tree removal test in force. Consent-notice template live. | | Months 6–12 | Year-1 large-grade programme in the worst heat × low-canopy cells. Private covenant product live. Two-catchment retention-grant pilot. Cool-roof spec on Council projects. | | Months 12–24 | First annual canopy-and-heat report. Adjust planting locations from year-1 mortality and CoC dashboard. Heritage-value schedule change if the new Acts allow it. Decision on expanding the grant. |

8. What this framework refuses to do

• Pretend a local board urban forest plan can override s 76.
• Use city-wide 18 percent as proof that private trees are fine.
• Count seedlings as replacement for mature canopy.
• Leave AT free to delete berm trees at detailed design.
• Restart PC113-style listing as if the Minister’s refusal did not happen, unless the new statutes reopen a lawful path.
• Ask private owners to carry a public cooling service for free while the same lot is upzoned for six to fifteen storeys, then act shocked when the tree goes.

9. Immediate committee decisions required

1. Adopt the four outcome statements in section 3.1 as the Ngahere operating KPIs, and retire 30 percent by 2050 as the sole success measure.
2. Direct RIMU to deliver the 2024 LiDAR canopy-change product by tenure and catchment within 12 months.
3. Direct Regulatory Services to code and publish tree-related Certificates of Compliance and notable-tree decisions quarterly.
4. Direct Parks and Auckland Transport to apply the public-tree removal test and year-10 canopy replacement rule from the next financial quarter.
5. Approve drafting of a standard consent notice / covenant product and a two-catchment private-retention grant pilot.
6. Instruct Government Relations to seek national direction on climate-infrastructure trees and interim nomination protection — without pausing public-land delivery.

10. Bottom line

Auckland does not have a tree-sentiment problem. It has a tenure-and-statute problem. Most of the urban forest sits on private lots that the law treats as the owner’s to clear. Intensification raises the price of keeping those trees. The incoming Acts make listing them harder. Council can still run a serious climate-infrastructure programme on the land it owns, on the consents it still controls, and on the titles it can bind. Everything else is a speech.

Implement the public estate and the consent hook first. Measure private loss in the open. Spend large-grade trees on hot, poor, low-canopy streets. Stop using a city-wide percentage as a tranquilliser.

Framework owner: to be appointed. Review: 24 months or on enactment of the Planning and Natural Environment Acts, whichever is sooner.