Heritage & Protected Trees: Lincoln vs Rocklin
How do heritage & protected trees rules compare between Lincoln, CA and Rocklin, CA?
Lincoln has fewer restrictions than Rocklin.
Lincoln, CA
Placer County
Lincoln does not adopt a separate 'heritage tree' designation in its Municipal Code. Native oaks (Quercus species) are the City's primary protected-tree category, addressed through Title 15 Ch. 15.28 landscape standards, Title 18 design review, the Oak Tree Mitigation Fund (Fund 2900), and the City's required arborist report and Native Oak Tree Inventory for new development.
View full Lincoln rules →Rocklin, CA
Placer County
Under Rocklin Muni. Code Ch. 17.77, a 'heritage tree' is any oak measuring 24 inches or larger in diameter at 4.5 feet above the root crown. Heritage oaks may be removed only with a Planning Division permit AND enhanced mitigation: planting five 5-gallon native oaks for each heritage tree removed, OR paying an in-lieu fee per tree into the City's Oak Tree Preservation Fund. The replacement ratio is more than double the standard healthy-oak rate (2:1).
View full Rocklin rules →Key Facts Comparison
| Fact | Lincoln | Rocklin |
|---|---|---|
| Heritage-tree chapter | Not adopted | - |
| Primary protected category | Native oaks (Quercus sp.) | - |
| Required studies | Arborist report + Native Oak Tree Inventory | - |
| Mitigation mechanism | Oak Tree Mitigation Fund (Fund 2900) | - |
| State CEQA threshold | Oaks 5 in. dbh or greater (PRC 21083.4) | - |
| Heritage threshold | - | Oak >=24" diameter at 4.5 ft above root crown |
| Mitigation ratio | - | 5 five-gallon native oaks per heritage tree removed |
| In-lieu option | - | Fee per tree into Rocklin Oak Tree Preservation Fund |
| Protected species | - | Interior Live Oak, Blue Oak, Valley Oak (native Quercus) |
| State backstop | - | Cal. Pub. Res. Code Sec. 21083.4 (CEQA oak woodland) |
Highlighted rows indicate differences between cities.
Lincoln FAQ
Does Lincoln designate individual heritage trees?
No. Lincoln has not adopted a heritage-tree ordinance. Tree protection is built into landscape standards (LMC Ch. 15.28), design review (LMC Title 18 Div. VII), and the City's oak mitigation program rather than a registry of named heritage specimens.
Are all oaks in Lincoln protected?
Native oaks (Quercus) are the focus of the City's protection program through the required Native Oak Tree Inventory and the Oak Tree Mitigation Fund. State CEQA review under PRC 21083.4 also applies to oaks five inches dbh or larger on discretionary projects.
Where can I find Lincoln's arborist report template?
The City's Business and Development Resources page references 'Appendix F Arborist Report and Native Oak Tree Inventory' as the standard format for project submittals.
Rocklin FAQ
How do I measure DBH to know if my oak is a heritage tree?
Use a diameter tape (or wrap a flexible measuring tape and divide circumference by Pi) at 4.5 feet straight up from the root crown. If the trunk forks below 4.5 ft, measure just below the fork. Any oak 24 inches or larger is a heritage tree under Ch. 17.77.
Can I pay a fee instead of planting five replacement oaks?
Yes. The ordinance allows property owners to pay an in-lieu fee per tree into the Rocklin Oak Tree Preservation Fund instead of planting. The current fee schedule is set by City Council resolution; contact Planning for the current rate.
Does the heritage tree rule apply to dead oaks?
If the oak is genuinely dead or dying (certified by an arborist report), the City may waive mitigation, including for heritage-sized trees. Submit the arborist report with the Oak Tree Removal Permit application.
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