How Irving Handles Tree Protection: A Practical Guide

Irving maintains 159 local ordinances across all categories, and 3 of those deal specifically with tree protection. Here is a breakdown of what the city actually requires, what is prohibited, and where Irving falls on the strict-to-permissive spectrum compared to other cities.

Parkway Planting

Irving requires a landscaped interior parkway along the street frontage of every nonresidential development, averaging 10 feet deep with at least one large or medium tree per 400 square feet of parkway area. The Unified Development Code sets minimum soil volumes, species-diversity caps, and clearance from overhead power lines for these plantings, with zoning-code penalties for noncompliance.

Key details: Interior parkway depth: 10 ft average, 5 ft minimum. Tree density: 1 large/medium tree per 400 sq ft. Electric line clearance: 30 ft for large/medium trees. Applies to: All nonresidential-zoned property citywide. Species cap: No species over 30% of required trees.

Failing to install or maintain the required parkway trees and landscaping is enforced as a Unified Development Code violation under UDC-1, Section 1.8.1 (Enforcement, Penalty), classified as a Class C misdemeanor. The base fine on conviction runs from $1.00 to $500.00, but because parkway planting is a zoning standard, a person who intentionally or knowingly violates a zoning regulation can be fined up to $2,000.00 per offense. The planning and inspections department reviews compliance at development approval and can withhold acceptance of a project's public improvements until required landscaping is installed.

Protected Tree Species

Citywide, Irving bars anyone from damaging or removing a protected tree, defined as any species six inches or larger in diameter that is not on the city's unprotected list, without first obtaining a no-fee tree removal permit from the building official under Land Development Code § 4.5.8.

Key details: Protected tree: Any species, 6"+ diameter, not on unprotected list. Permit required: Tree removal permit, no application fee. Permit validity: Void 180 days after issuance. Survey trigger: 10+ trees removed needs scaled tree survey. Misdemeanor fine: $500 per violation, per day.

Section 4.5.13 makes the unlawful injury, destruction, or removal of each protected tree a separate incident, each subject to its own penalty, on top of any civil penalties or injunctive relief the city attorney may pursue under state law. A person who violates a procedural requirement or a permit condition commits a misdemeanor punishable by a $500 fine per violation, with each day of noncompliance treated as a separate offense. No building permit, certificate of occupancy, or acceptance of public improvements will issue until outstanding fines are paid and required replacement trees are planted or mitigation payments made to the Tree Mitigation Fund.

Compared to other cities, Irving takes a harder line on protected tree species. The enforcement and penalty structure reflects that.

Heritage & Protected Trees

Inside Irving's Heritage Crossing District, any Post Oak, Blackjack Oak, or tree of 24-inch caliper or larger counts as a protected heritage tree. Developers preserving one earn a 1.5-to-1 landscaping credit, or 2-to-1 for six-inch-plus Post Oak and Blackjack Oak relic trees, under Land Development Code § 2.6.6.

Key details: Heritage tree: Post Oak, Blackjack Oak, or 24"+ caliper. Standard credit: 1.5-to-1 for 24-inch caliper trees. Relic species credit: 2-to-1 for 6"+ Post/Blackjack Oak. Applies in: Heritage Crossing District only. Removal timing: Only after building permit, imminent development.

Removing a protected tree contrary to § 2.6.6(h) requires the owner to pay into the Heritage Crossing District Tree Fund, calculated using the tree-appraisal formula from the Council of Tree and Landscape Appraisers' Guide for Establishing Values of Trees and Other Plants (values are added if multiple trees are removed). As an alternative, the owner can mitigate the loss by planting an equal number of caliper inches of replacement trees, each at least six inches in caliper, at a location the director approves within the district's boundaries.

The Bottom Line

Irving's tree protection rules are a mixed bag. Some areas are strict, others are relaxed, and the details matter. The best approach is to check the specific rule that applies to your situation rather than assuming Irving is broadly strict or permissive.

This guide is based on Irving's current municipal code. Local rules can and do change, so check the individual ordinance pages for the latest details, penalties, and FAQs.