North Port, FL Environmental Rules: Erosion Control (2026)
Key Facts
- Governing code
- ULDC § 4.4.1.E(7)-(8)
- Applies to
- One-and-two-family building permits
- Minimum survey points
- Ten existing grades, NGVD29/NAVD88 datum
- Swale design storm
- 10-year, 24-hour storm capacity
- Escalation trigger
- Adverse drainage effect on adjacent lot
Summary
New one-and-two-family development in North Port must submit a site and drainage plan showing existing grades, swale routing, and positive drainage from rear to front before the city issues a building permit.
Site and Drainage Plan Requirements. The site and drainage plan shall include, at a minimum, the following existing conditions: ...g. Stormwater runoff must drain from the rear lot line to the front drainage swale, except when the property is bound by a City-maintained drainage right-of-way. If the property is bound by a City-maintained drainage right-of-way, runoff will be allowed into those facilities. ...k. Slopes shall not exceed three (3) to one (1) (horizontal to vertical).
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of the City: Supplement 65 | Unified Land Development Code: Supplement 22).
Full Breakdown
North Port's Unified Land Development Code requires every one-and-two-family building permit application to include a site and drainage plan under ULDC § 4.4.1.E(7). The plan must show at least ten existing grades tied to NGVD29 or NAVD88, the front-yard roadside swale, side and rear outfall ditches, and proposed first-floor elevations. Stormwater must drain from the rear lot line to the front swale, with arrows demonstrating positive drainage and no adverse effect on adjacent lots. If city review finds adverse drainage effects on a neighboring lot, § 4.4.1.E(8) escalates the requirement to a sealed topographic survey and an engineered drainage plan from a Florida-licensed surveyor and professional engineer.
Violations & Fines
Building permits are withheld until the site and drainage plan meets § 4.4.1.E(7); the Public Works Department can require a sealed engineered resubmittal under § 4.4.1.E(8) if drainage would harm adjoining lots.
Frequently Asked Questions
Does North Port require a drainage plan for a new house?
What if my lot's drainage plan would flood a neighbor?
Sources & Official References
Other rules in North Port
Florida rules heatmap·Compare North Port to another location·View the Florida environmental rules overview
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