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Hamilton County, TN Tree Protection: Parkway Planting (2026)

Some Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified September 2026

Key Facts

Governing section
Art. V, § 303.B Plantings
Planting ratio
1 tree per 35 linear feet of frontage
Tree spacing
15 ft minimum, 50 ft maximum trunk to trunk
Minimum mature height/canopy
35 ft tall, 20 ft canopy spread
Street yard depth
8 feet from right-of-way
Exempt
1-, 2-, 3-family homes on own lot

Summary

New and expanding commercial or multi-family developments in unincorporated Hamilton County must plant one street tree per 35 linear feet of right-of-way frontage in the required eight-foot street yard, with trees spaced 15 to 50 feet apart and able to reach 35 feet tall.

City-specific rules exist: Chattanooga has its own parkway planting rules that differ from Hamilton County's county-level regulations. If you live in Chattanooga, check the city-specific page instead.

1) Trees shall be planted within the street yard at a minimum ratio of one (1) tree per thirty-five (35) linear feet of right-of-way frontage. Trees do not have to be evenly spaced in thirty-five (35) feet increments. Fractions of trees shall be rounded up to the nearest whole number. 2) The minimum spacing between trees is fifteen (15) feet measured trunk to trunk. The maximum spacing is fifty (50) feet measured trunk to trunk. 3) The trees referred to in this section shall have a minimum expected maturity height of at least thirty-five (35) feet and a minimum expected canopy spread of twenty (20) feet.

Full Breakdown

Article V, Section 303 of the Hamilton County Zoning Regulations requires a street yard, a planted strip at least eight feet deep measured from the edge of the public right-of-way, wherever a covered development adjoins a street; alleys are exempt. B sets the planting standard: trees go in at a minimum ratio of one tree per 35 linear feet of right-of-way frontage, with fractions of a tree rounded up, and trees are not required to sit in even 35-foot increments. Spacing must run between 15 feet and 50 feet trunk to trunk.

3. B exempts one-, two-, and three-family homes on their own lot from the whole Article, so this planting mandate targets commercial, office, industrial, and multi-family street frontages, not single-family yards. 2.

Violations & Fines

Failure to install the required street trees before occupancy can hold up the Certificate of Occupancy under Section 302.C, or trigger a performance bond requirement under Section 310. General Zoning Regulations violations are misdemeanors under Article VIII, Section 105.B, with fines of $25 to $100 and each day of noncompliance a separate offense.

Frequently Asked Questions

Does the street tree rule apply to a single-family home in unincorporated Hamilton County?
No. Section 302.B of the Zoning Regulations exempts one-, two-, and three-family residential structures on their own lot from Article V entirely, so this planting ratio only reaches commercial, office, industrial, and multi-family projects.
How far apart do street trees have to be planted?
Section 303.B sets a minimum spacing of 15 feet and a maximum of 50 feet measured trunk to trunk, with an overall ratio of one tree per 35 linear feet of right-of-way frontage, rounding any fraction up to a whole tree.
What species qualify as a street tree?
The tree must meet the Class I Shade Tree standard in Section 307: minimum 2-inch caliper at installation, expected mature height of at least 35 feet, and canopy spread of at least 20 feet, unless overhead power lines require a smaller Class II substitute.

Sources & Official References

Other rules in Hamilton County

All Hamilton County rules

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