Smithtown, NY Tree Protection: Parkway Planting (2026)
Key Facts
- Required in
- All subdivisions
- Spacing
- 40 to 60 feet apart
- Setback from pavement
- 3 feet 6 inches
- Minimum trunk diameter
- 2 to 3 inches at 6 feet
- Waiver option
- Planning Board may allow landscaped groups
Summary
Every new subdivision in Smithtown must plant street trees along both sides of each street, spaced 40 to 60 feet apart and set three and a half feet back from the pavement edge. The trees must be approved nursery stock with a two-to-three-inch trunk diameter, though the Planning Board can approve landscaped groupings instead of the even spacing.
H. Street trees. (1) Street trees shall be provided in all subdivisions. (2) Trees shall be of nursery stock of an approved species grown under the same climatic conditions as at the location of the development. They shall be of symmetrical growth, free of insect pests and disease, suitable for street use and durable under the maintenance contemplated. (3) The average trunk diameter measured at a height of six feet above the finished ground level shall be a minimum of two to three inches, depending on good practice with references to the particular species to be planted. (4) Trees shall be planted at intervals of from 40 to 60 feet apart, depending upon the species, along both sides of the street and shall be located within the street right-of-way three feet six inches from the edge of the street pavement. The Planning Board may waive this specification in favor of planting an equivalent number of trees in landscaped groups.
Full Breakdown
Town Code § 248-37H, part of the Subdivision Regulations' street improvement specifications, requires that street trees be provided in all subdivisions. The stock must be nursery-grown of an approved species raised under the same climatic conditions as the development site, of symmetrical growth, free of insect pests and disease, suitable for street use and durable under the maintenance the Town expects to provide. The code sets a minimum average trunk diameter of two to three inches, measured six feet above finished ground level, with the exact figure left to good practice for the species being planted.
Spacing runs 40 to 60 feet apart depending on species, along both sides of the street, located within the street right-of-way three feet six inches from the edge of the pavement. The Planning Board holds discretion to waive the even-interval spacing in favor of planting an equivalent number of trees in landscaped groups instead. The same article also requires the planting strips within road rights-of-way to be finish graded and seeded or sodded with lawn grass in conformance with good nursery and landscape practice under § 248-37I, and lets the Town Engineer and Superintendent of Highways jointly approve alternate specifications under § 248-37L when an alternate accrues to the public benefit.
Violations & Fines
Street tree planting is reviewed as part of the subdivision's public improvement plan; a developer who fails to install the required street trees cannot obtain the final inspection needed under § 248-43 to release the performance bond covering site improvements, effectively holding the bonded funds until the planting is completed to Town specifications.
Frequently Asked Questions
Does Smithtown require street trees in new subdivisions?
How far apart must street trees be spaced?
Can a developer skip the even spacing pattern?
Sources & Official References
Other rules in Smithtown
New York rules heatmap·Compare Smithtown to another location·View the New York tree protection overview
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Parkway Planting in Nearby Cities
How other cities in Suffolk County handle parkway planting.