ANJEC Environmental Congress, September 2026
Tree Ordinances for a Climate Crisis Reality
The slides from the talk, and every source it cites, with links to the originals.
The talkOpening
Part oneWhy it matters
Part twoFind your data
Part threeWhat the data said
Part fourWrite it
Part fiveGet it passed
Part sixEnforce it
Sources and further reading
Everything cited in the talk
Everything cited in the talk, with links where they exist. The Montclair figures come from tree removal permits and Township records obtained under the Open Public Records Act.
Climate and tree canopy
- Warming will pass 1.5°C within a few years. UNEP, Limiting Overshoot (2 September 2026).
- “Many interventions can achieve simultaneous adaptation and mitigation goals — increasing appropriate urban tree canopy coverage, for example, reduces the urban heat island effect, lowering heat-related morbidity and mortality while also storing carbon.” UNEP, Limiting Overshoot, p. 69, citing Iungman et al. (2023).
- “Urban” means built-up land, not cities. NJDEP Urban & Community Forestry Program, authorized by the NJ Shade Tree and Community Forestry Assistance Act, N.J.S.A. 13:1L-17.1 et seq.
- New York City’s goal of at least 30% canopy by 2035. NYC Urban Forest Agenda, Forest for All NYC. Current canopy about 22%.
Heat, shade and equity
- Heat kills more Americans than any other kind of weather. NOAA / National Weather Service weather fatality statistics. Thirty-year averages, 1994–2023: heat 183 a year, floods 88, tornadoes 72, hurricanes 48, lightning 36.
- 29 heat deaths in New Jersey, July 2026. New Jersey Department of Health, news release, 14 July 2026. Ten counties; ages mid-30s to 80s.
- Cooling accelerates above about 40% canopy; up to 7–9°F. Ziter, Pedersen, Kucharik & Turner, PNAS 116(15):7575–7580 (2019). Air temperature measured by bicycle transect.
- The blocks with the least canopy are the blocks that were redlined. Locke et al., “Residential housing segregation and urban tree canopy in 37 US cities,” npj Urban Sustainability (2021). About 23% canopy in formerly D-graded areas against about 43% in A-graded areas.
New Jersey’s canopy
- About 2,600 acres of tree cover lost a year in towns and suburbs, roughly 2008–2013; most of it replaced by grass. Nowak & Greenfield, “Declining urban and community tree cover in the United States,” Urban Forestry & Urban Greening 32 (2018): 32–55. The paper: “Most of the tree cover loss was to grass/herbaceous (−0.9%) or impervious cover types.”
- About 114,000 acres of upland forest lost, 1986–2012 (roughly 7%). Lathrop, Bognar & Hasse, Changing Landscapes in the Garden State, Rutgers/Rowan (2016).
- About 9,700 acres of upland forest converted, 2015–2020. Rutgers Center for Remote Sensing & Spatial Analysis, Changing Landscapes in the Garden State, 1986–2020 (2025). 1,936 acres a year, 2015–2020, against 745 a year in 2012–2015.
- New Jersey has the highest share of paved and built land of any state, about 12%. Nowak & Greenfield, Landscape and Urban Planning (2012). From imagery around 2005.
- Projected majority urban land by 2050. Nowak et al., USDA Forest Service General Technical Report NRS-62 (2010). New Jersey, Rhode Island, Massachusetts and Connecticut.
- Most recent statewide urban canopy estimate: about 42.6%. PlanIT Geo and EarthDefine for the Arbor Day Foundation and USDA Forest Service. 2021–2023 imagery, 2023 Census urban areas. Different boundaries and method from the figures above — not a measure of change.
The law
- Every Tier A municipality must adopt and enforce a tree removal and replacement ordinance; deadline 1 May 2024. NJDEP Tier A MS4 Master General Permit. Requirement added in the 2022 permit renewal.
- NJDEP model tree removal and replacement ordinance, November 2023 — free, and adoptable as it stands. NJDEP model ordinance (PDF). NJDEP describes it as a guidance document and template that may be used in whole or in part.
- A tree fund is not itself required by the state. Tier A permit and NJDEP model ordinance, above. The permit requires an ordinance covering removal and replacement on all lands. Payment in lieu, and the fund that receives it, are options in the model — adopted, for example, in Eatontown Ord. 04-2024 and Haddon Heights Ord. 2025:1578.
- Towns may require tree permits, require replacement trees, and charge a fee in lieu. On the fee: “So long as the replacement fees do not exceed the municipality’s costs for administration and replacement, they are legitimate elements of the regulatory scheme.” New Jersey Shore Builders Association v. Township of Jackson, 199 N.J. 38 (2009), A-83-2007, decided 13 May 2009.
- Maplewood’s refusal of a permit for a 72-inch London plane. The New York Times, 31 August 2026.
- New Jersey towns already refusing or restricting removal: Cedar Grove and Verona. Cedar Grove Ch. 246; Verona Ch. 493 § 493-21. Verona: no more than two healthy mature trees per property per year without a Planning Board hearing; extraordinary trees of 36 inches or more require a Council resolution.
- Open records requests. New Jersey Open Public Records Act, N.J.S.A. 47:1A-1 et seq..
The Pinelands precedent
- All clearing and soil disturbance must be limited to what is necessary to accommodate a permitted use. N.J.A.C. 7:50-6.23(a), Pinelands Comprehensive Management Plan.
- Where practical, clearing must avoid wooded areas, including New Jersey’s Record Trees as published by NJDEP. N.J.A.C. 7:50-6.23(b)(1). Applies to development other than agriculture, forestry and resource extraction. The rule refers to the Record Trees list NJDEP first published in 1991 and updates periodically.
- A Pinelands municipal master plan or land use ordinance cannot be certified unless it protects Pinelands vegetation — in the rule’s own terms or an equivalent. N.J.A.C. 7:50-6.22, Vegetation Management Program. Pinelands towns repeat the Record Trees language in their own codes — for example, Hammonton § 175-136 and Lacey Township’s Pinelands standards.
- The Pinelands Comprehensive Management Plan. New Jersey Pinelands Commission.
- New Jersey’s registry of its largest trees. NJ Forest Service, Big Tree Conservation Program. Formerly the Champion Tree Program; the Official New Jersey Big Tree Registry.
Penalties
- Municipal fines capped at $2,000. N.J.S.A. 40:49-5, as amended by P.L. 2005, c. 269. Up to 90 days, $2,000, or 90 days community service, per violation.
- Each tree and each day a separate violation. Adopted in Millburn (Ch. 11), Westfield (Ch. 29A), Livingston (Ch. 306 § 306-9), Madison (Ch. 178), Denville, Cedar Grove (Ch. 246 § 246-14) and Nutley (Ch. 665 § 665-26).
- Fining owner and contractor separately. Maplewood Ch. 227 § 227-12. $2,000 against each, reaching $4,000 on one tree. Summit fines the contractor separately at full replacement cost.
- Charging what the tree was worth. Westfield Ch. 29A; Summit Ch. 29 § 29-11; Princeton. Westfield: the ISA trunk formula retail value, assessed by the Tree Preservation Commission, plus up to $2,000 if the violator does not comply within 30 days. Summit: twice the replacement cost of the trees taken, plus up to $2,000, and the court may order restitution or appraised value, whichever is greater. Princeton: the court may order restitution at appraised value, plus an hourly administrative fee at real staff cost.
- A 30-inch tree taken without a permit: Montclair $1,000, Millburn $5,200. Millburn Ch. 11; Montclair Ch. 324. Millburn: up to $2,000 in fines plus $3,200 in replacement trees (8 × $400), each tree and each day a separate offense. Millburn regulates trees over 10 inches on private property; the owner-occupied exemption applies only where neither tree exceeds 18 inches. Montclair Ch. 324 carries no restitution or mitigation provision.
- A statutory tool most towns do not use. N.J.S.A. 40:64-12(b); adopted in Verona § 493-16. Allows a shade tree commission to require a replacement assessment — the appraised value, or a formula based on square inches of trunk cross-section at up to $27 a square inch.
Ordinance design and compliance
- Replacement compliance falls sharply where there is construction: 76% of homeowners planted what their permits required without construction, 54% with it; 85% knew the rule. Conway, Khatib, Tetreult & Almas, “A Private Tree By-Law’s Contribution to Maintaining a Diverse Urban Forest,” Arboriculture & Urban Forestry 48(1):9–26 (2022). Toronto; 429 responses, self-reported, so compliance may be overstated.
- A tree’s crown spreads about 25 times the width of its trunk. Coombes, Martin & Slater, “Defining the allometry of stem and crown diameter of urban trees,” Urban Forestry & Urban Greening 44 (2019). 400 free-standing trees in Norwich and Peterborough, four species, ratios of 24 to 27.
- Street-tree growth rates. Mailloux et al., PLOS One 19(7):e0304447 (2024). 126,362 New York City street trees: Silver Linden fastest at 0.510 in/yr, London planetree slowest at 0.163.
- Municipal forestry accreditation: 143 of New Jersey’s 564 municipalities accredited in 2022. NJDEP Environmental Trends, Urban and Community Forests; requirements: NJDEP accreditation. Accreditation requires a current five-year Community Forest Management Plan, CORE training, eight continuing-education credits across at least two people, and an Annual Accomplishment Report by 15 February.
Tools
- i-Tree Canopy — free canopy estimates from aerial imagery. USDA Forest Service.
- Tree Equity Score — need-based canopy goals by neighborhood. American Forests.
- The Urban Heat Island Effect and Land Surface Temperature in New Jersey. NJDEP, Heat Hub NJ. Interactive map; land surface temperature, summer 2022.
- “The NJDEP Model Ordinance & Municipal Tree Ordinances in NJ.” New Jersey Shade Tree Federation and NJAPZA (2024): Part 1, Part 2, Part 3. Three-part webinar series.
Further reading
- F.P. Development v. Charter Township of Canton, 6th Cir. (2021) A tree ordinance held unconstitutional as applied, because the township could not show its fee was roughly proportional and its cost figures were fifteen years old. Not binding in New Jersey.
- Sheetz v. County of El Dorado, 601 U.S. 267 (2024) Adopting a fee by ordinance does not exempt it from constitutional review.
- Austin, Texas Heritage Tree Ordinance (2010), City Code Title 25-8 All oaks and eight other species at 24 inches or more are protected on private property; the species list may be supplemented but not reduced.
- Jersey City Tree Canopy Assessment 2013–2023 University of Vermont Spatial Analysis Lab for Sustainable Jersey City and the City of Jersey City (published 2024–2025). The one repeated municipal canopy measurement in New Jersey.
Montclair’s data
At least 4,786 trees removed 2020–2025; 2,133 shade trees not replaced; more than a fifth of private replacements were privacy screens; no trees planted from the municipal budget in 2025; 3,035 replacement trees recorded on 1,464 private permits and none confirmed planted; only 2,121 of those were canopy species.
Sustainable Montclair’s analysis of 1,464 Chapter 324 tree removal permits and Township planting and removal records, obtained under OPRA.
Case 02 — 23 trees removed, 23 Green Giant arborvitae recorded as replacements, $0 paid in lieu.
Township tree removal permit application; aerial imagery Google Earth, June 2022 and October 2025. Address withheld.
Sustainable Montclair, Montclair, New Jersey. An independent, volunteer environmental advocacy organization, not affiliated with the Township of Montclair. Nothing in this talk is legal advice; discuss with your town attorney.