Landscaping Rules in Portland, ME: What Residents Actually Need to Know

If you live in Portland or are thinking about moving there, landscaping rules are one of those things you probably won't think about until they affect you directly. Portland has 2 specific rules on the books covering different aspects of landscaping rules, and some of them might surprise you.

Tree Trimming

Portland requires owners of property bordering a street to prune overhanging trees to a minimum clearance of 10 feet over sidewalks and 12 feet over streets, 16 feet over truck thoroughfares, and bars any tree from blocking street lights, sidewalks, traffic signs or intersection sightlines.

Key details: Sidewalk clearance: 10 feet minimum overhang height. Street clearance: 12 feet minimum overhang height. Truck thoroughfare clearance: 16 feet minimum overhang height. Notice-to-comply window: 10 days after written notice (§ 29-20(b)). Non-compliance remedy: City prunes/removes, bills the owner (§ 29-20(d)).

Under § 29-20(d), if the owner fails to comply with the arborist's order within the specified time, "it shall be lawful for the city to prune or remove such trees and all costs thereof shall be charged to the owner thereof." Article II sets no separate fine for this section, so a continuing obstruction also falls under the Code's general penalty at § 1-15: $100 to $500 per offense, with each day of the violation a separate offense, enforceable by the corporation counsel.

Tree Removal & Heritage Trees

Before touching any tree on a Portland street, park or other public place, you need a permit from the City Arborist. The rule covers planting, spraying, fertilizing, pruning and removal alike, and every permit carries a firm expiration date tied to the approved scope of work.

Key details: Governing chapter: Ch. 29, Art. II Trees (public places). Permit authority: City Arborist, Dept. of Parks & Public Works. Covered acts: Plant, spray, fertilize, prune, remove, cut. Completion notice: 5 days after work finishes (§ 29-19). General penalty: $100–$500 per offense, per day (§ 1-15).

Article II carries no separate fine schedule of its own, so an unpermitted removal, pruning or disturbance of a public tree falls under the Code's general penalty at § 1-15: a fine of not less than $100 nor more than $500 for each offense, with every day the violation continues counted as a separate offense. The corporation counsel may also pursue equitable enforcement, and under § 29-22 the arborist can remove an improperly planted or disturbed tree and charge the cost to the responsible owner or planter.

This is not one of those rules that cities tend to ignore. Portland actively enforces its tree removal & heritage trees requirements.

The Bottom Line

Portland's landscaping rules 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 Portland is broadly strict or permissive.

These rules come from Portland's publicly available municipal code. For complete penalty schedules, exemption details, and answers to common questions, see the individual ordinance pages throughout this guide.