🌳 Tree Protection in Austin: What Every Homebuyer, Seller, and Investor Should Know

When it comes to building or renovating in Austin, Texas, protecting mature trees isn't just good practice—it’s required by law and essential for long-term property value. Whether you're a homebuyer looking at lots, a seller preparing a listing, or an investor managing a construction project, understanding tree protection ordinances can help you avoid costly mistakes and make smarter decisions.

Why Tree Protection Matters in Austin

Austin is proud of its urban forest—and for good reason. Mature trees add natural beauty, provide shade, reduce cooling costs, and increase curb appeal. But beyond their aesthetic value, trees play a crucial role in local biodiversity and environmental sustainability.

That’s why the City of Austin enforces strict tree protection ordinances, especially for “protected” and “heritage” trees.

Understanding Protected vs. Heritage Trees

• Protected Trees: Any tree with a trunk diameter of 19 inches or more (measured at 4.5 feet above ground).
• Heritage Trees: Specific species such as oak, pecan, and bald cypress that are 24 inches or more in diameter.

Removing or significantly altering these trees requires a permit from the City Arborist Program. Unauthorized work can result in fines or stop-work orders—delays no builder wants.

Construction Guidelines: How to Protect Trees on Your Site

When developing or building on a lot in Austin, follow these standard tree protection measures:

1. Install Tree Protection Fencing

Place a 5-foot tall chain-link fence around the tree’s Critical Root Zone (CRZ). The CRZ is calculated by measuring the tree’s diameter at breast height (DBH), dividing by two, and converting to feet.

For example:

A 20-inch diameter tree would require a 10-foot radius of protection.

2. Use Mulch to Protect the Soil

Apply 4–8 inches of organic mulch around the base of the tree (within the CRZ). This helps:

• Retain moisture
• Reduce soil compaction
• Protect delicate roots

3. Avoid Trenching Near Roots

Trenching within the CRZ should be avoided, but if necessary, it must be done by:

• Hand digging or
• Air spading (compressed air excavation)

Never use mechanical trenching equipment within the CRZ. Always work with an ISA-certified arborist for proper oversight.

What About Utility Work and Tree Trimming?

Tree trimming near utility lines is handled by Austin Energy—not property owners. Their crews maintain:

• 10-foot clearances for slow-growing trees
• 15-foot clearances for fast-growing trees

Homeowners should never attempt trimming near power lines. Instead, call Austin Energy at 512-494-9400 for assistance.

You may trim limbs overhanging your property, but removing more than 25% of the canopy from a protected or heritage tree requires a permit.

Permits, Violations & the TORA Process

If you plan to remove or significantly prune a protected tree, you’ll need to submit a Tree Ordinance Review Application (TORA) through the Austin Build + Connect Portal.

To report violations (like illegal trimming or tree damage), contact:

• City of Austin 3-1-1
• Or file online via the City Arborist Program

Long-Term Benefits of Tree Preservation

Protecting existing trees isn’t just about compliance—it’s a smart investment.

✅ Adds instant curb appeal
✅ Reduces future landscaping costs
✅ Retains property character and biodiversity
✅ Increases home value
✅ Supports Austin’s sustainability goals

Final Thoughts: Smart Growth Starts with Smart Tree Care

At [Your Company Name or Rivendale Homes], we believe that thoughtful development begins with respecting the natural landscape. If you’re planning to build or buy in Austin, be sure to consult with a certified arborist and review your tree survey carefully before breaking ground.

Want to learn more about building responsibly in Austin? Reach out to our team—we’re here to help guide you through the process.