Planning a remodel in Alamo and wondering if that oak by your deck needs a permit? You are not alone. Tree rules in unincorporated Contra Costa County can affect timelines, budgets, and even design choices. This guide breaks down when you need a permit, how the process works, and simple steps to keep your project moving. Let’s dive in.
Do you need a tree permit in Alamo?
Alamo is unincorporated, so Contra Costa County sets the rules. The County’s Tree Protection and Preservation Ordinance defines what counts as a protected tree and when permits apply. If you plan to remove a tree or build near one, you may need County approval.
Protected tree criteria and measurement methods are spelled out in the County code. Review the ordinance language on protected species, size thresholds, and groupings to see what applies to your lot. See the County’s protected-tree definitions and thresholds in Chapter 816-6.6004 of the code.
- Read the protected-tree criteria: Contra Costa County Code, Chapter 816-6.6004
What counts as a protected tree?
- Species and setting: Many indigenous species, such as oaks and redwoods, are protected in woodlands, riparian areas, or stands.
- Size thresholds: A single trunk measuring 20 inches or more in circumference at 4.5 feet above grade, or a multi-stem tree with a combined 40 inches of circumference, can trigger protection.
- Groupings and special designations: Groves of four or more trees, trees preserved by prior approvals, required replacement trees, and heritage trees are protected.
- Non-native trees: Some non-natives are not on the indigenous list. Even so, a non-native can be protected if it is a designated replacement or heritage tree. Always confirm before removal.
Permit types and what to expect
The County uses two general pathways:
- Ministerial or minor permits: Typically for dead or hazardous trees and some simpler cases. These often rely on a short arborist verification and can move faster.
- Discretionary permits: For larger native trees, removals tied to development, or complex sites. Expect a certified arborist report, a tree protection plan, possible public notice, and conditions.
County updates are ongoing, with proposals to clarify size thresholds and add ministerial paths for certain situations. Check the County’s update page before you submit.
- See the update overview: Tree Ordinance Update
- Understand timelines: Planning Application Overview
How tree permits fit into your remodel
Tree permitting is easiest when you start early and document each step.
Step 1: Get an early County check
Schedule time to verify whether your trees are protected and which permit track applies. Submitting a complete application online keeps reviews moving.
- Start here: Submitting Your Online Permit Application
Step 2: Identify protected trees on your lot
Measure trunks at 4.5 feet above grade and note species. If you prefer, hire a certified arborist to document size, health, and any hazards. Accurate measurements help determine if a permit is needed.
Step 3: Plan your arborist documentation
Minor cases may only need an arborist verification. Discretionary cases usually require a full arborist report with species, measurements, health and risk assessment, and a mitigation plan if removal is proposed.
Step 4: Coordinate defensible space
State law requires defensible space around homes. If you need to prune or remove trees for fire safety, document direction from your local fire agency and coordinate with County Planning. This can support an exemption or faster review.
- Guidance: CAL FIRE Defensible Space
Step 5: Protect trees during construction
If trees will remain, you may need a Tree Protection Plan. Common measures include fencing at the dripline, no stockpiling or parking within the dripline, and arborist monitoring during grading.
- Protection standards: Code Section 816-6.1202
Step 6: Plan for mitigation
When removal is approved, the County may require on-site replacement trees or an in-lieu fee, plus monitoring of replacements. Build time and budget for these conditions into your remodel plan.
Step 7: Street or right-of-way trees
Work in the public right-of-way, including street trees and planting strips, typically needs a separate Public Works encroachment permit.
- Public Works permits: ePermits Center Overview
How decisions are made
County staff consider several factors when reviewing tree work:
Tree health and safety
Documented hazard or public safety risk
Damage to structures or utilities that cannot be avoided
Whether reasonable development is possible without removal
Fire hazard concerns and defensible space
Decision criteria: Code Section 816-6.8010
Timelines and realistic expectations
Simple, ministerial approvals can be quick if your submittal is complete. Discretionary permits linked to development can take weeks to months and may include public notice or hearings. A pre-submittal check and a complete online application often reduce review cycles.
- Timeline basics: Planning Application Overview
Penalties and appeals
Removing a protected tree without approval can lead to fines, replacement requirements, or other enforcement actions. If you receive a notice or have a dispute, contact County Code Enforcement and review your appeal options in the Planning process.
- Enforcement info: Code Enforcement
Ready to remodel with confidence? If you would like local guidance on coordinating permits with your home goals, reach out to Linda Traurig. You will get calm, practical advice and a trusted advocate who can help you line up the right steps and keep your project on track.
FAQs
Do I need a permit to remove one tree in my Alamo yard?
- It depends on species, size, and whether the tree is part of a protected grouping or prior approval. Check with County Planning before removal.
Can I remove trees for defensible space during a remodel?
- You must meet both fire-safety rules and County tree rules. Document guidance from your fire agency and coordinate with Planning to determine the correct path.
How long do tree permits take in Contra Costa County?
- Simple cases can be fast if complete. Discretionary permits often take weeks to months, depending on complexity, notice, and hearings.
What will mitigation or fees cost if a protected tree is removed?
- Costs vary by case. The County may require replacement trees, an in-lieu fee, and monitoring. Ask Planning for current requirements as you budget.
Who handles street or sidewalk trees in Alamo?
- Trees in the public right-of-way are typically handled through Public Works via an encroachment permit, separate from your remodel permits.
