Hillsborough County, FL Tree Protection: Heritage & Protected Trees (2026)
Key Facts
- Grand oak threshold
- 34+ inch DBH oak
- Removal
- Requires Administrator authorization
- Pruning
- ISA/ASCA certified arborist only
- Applies to
- Development/permitting process
- Illicit removal penalty
- ISA Shade Tree Formula valuation
Summary
Hillsborough County's Land Development Code requires developers to preserve any oak 34 inches or more in trunk diameter, a 'grand oak', unless the County Administrator authorizes removal.
3. The developer shall preserve all trees identified as a grand oak unless authorized for removal by the Administrator. ... 14. Pruning of a grand oak, with the exception of minor pruning, is prohibited unless conducted in accordance with the ANSI A 300 Pruning Standards ... as performed by an Arborist certified by the International Society of Arboriculture (ISA) or a Registered Consulting Arborist with the American Society of Consulting Arborists (ASCA).
Full Breakdown
LDC Sec. 4.01.06.A.3 requires a developer to preserve every tree identified as a grand oak, defined at 34+ inches DBH, within a development site unless the County Administrator authorizes removal; a limited exception applies in road sight-distance and recovery areas. Sec. 4.01.06.A.14 further bars pruning a grand oak, beyond minor trimming, except under ANSI A300 Pruning Standards performed by an ISA Certified Arborist or ASCA Registered Consulting Arborist, with a notarized affidavit filed with the County before work begins. The rule governs unincorporated Hillsborough County's development-permitting process, not routine yard maintenance on already-developed lots.
Violations & Fines
Unauthorized removal is treated as illicit; the County requires replacement valued under the ISA Shade Tree Formula (LDC Sec. 11.06.05) and can condition or deny development approvals.
Frequently Asked Questions
Does this protect grand oaks on my existing house lot?
Can I prune a grand oak myself?
Sources & Official References
Other rules in Hillsborough County
Florida rules heatmap·Compare Hillsborough County to another location·View the Florida tree protection overview
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