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Cedar Park, TX Environmental Rules: Flood Zones (2026)

Some Restrictions

Compiled from the official code textEditor Martyn O'NeillLast verified September 2026

FEMA flood zone rules in Cedar Park, TX, also called floodplain regulations or special flood hazard area (SFHA) rules, determine flood insurance requirements and elevation standards for new construction.

Key Facts

Permit required: Yes, before any development
Administered by: Director of Engineering
Maps used: Williamson & Travis County FIRMs
Penalty: Misdemeanor, daily fine

FEMA Flood Zone Lookup

FEMA assigns every parcel in the U.S. a flood-hazard designation on its Flood Insurance Rate Maps (FIRMs). Zones starting with A or V are high-risk Special Flood Hazard Areas where federally backed mortgages require NFIP flood insurance. Zone X indicates moderate-to-minimal risk, where insurance is optional but often recommended. Your specific zone determines insurance cost, build elevation, and permit requirements in Cedar Park, TX.

Zone	What it means	NFIP required?
A	High-risk flood area; 1% annual chance flood, no detailed analysis.	Yes
AE	High-risk; same as A but with established Base Flood Elevations.	Yes
AH	High-risk shallow flooding (1-3 ft), usually ponding.	Yes
AO	High-risk shallow flooding (1-3 ft) with sheet flow on sloping terrain.	Yes
V	High-risk coastal zone subject to wave action (no BFE).	Yes
VE	High-risk coastal zone with wave action and established BFEs.	Yes
X (shaded)	Moderate risk; between the 1% and 0.2% annual chance flood.	Recommended
X	Minimal risk; outside the 0.2% annual chance floodplain.	No

Look up Cedar Park, TX on the FEMA flood map

FEMA maps update periodically; verify zone before buying flood insurance or building.

Summary

Any development within Cedar Park's FEMA-mapped special flood hazard areas, covering both the Williamson and Travis County sides of the city, requires a development permit before construction, alteration, or a use change can begin.

The areas of special flood hazard identified by the Federal Emergency Management Agency in the current scientific and engineering report entitled, "The Flood Insurance Study (FIS) for Williamson County, Texas, and Incorporated Areas dated September 6, 2008..." and "The Flood Insurance Study (FIS) for Travis County, Texas, and Incorporated Areas" dated January 6, 2016...are hereby adopted by reference... A development permit shall be required to ensure conformance with the provisions of this Article.

View official code

Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: rev 4973212; v14 updated 2026-06-25).

Full Breakdown

Article 3.03 applies to all areas of special flood hazard within Cedar Park's jurisdiction, using FEMA's Flood Insurance Study and rate maps adopted by reference for both the Williamson County portion (2008 FIRM) and the Travis County portion (2016 FIRM) of the city. Section 3.03.006 requires a development permit before any structure or land is located, altered, or has its use changed within a mapped hazard area, and bars work until the project fully complies with the article. The Director of Engineering, serving as Floodplain Administrator, reviews applications, verifies elevation data, and can require an engineer's certification before approving work.

Violations & Fines

Class C misdemeanor under § 3.03.009, fined per § 1.01.009 for each day the violation continues; noncompliant development can also jeopardize the property's standing for federal flood-insurance coverage.

Frequently Asked Questions

Do I need a permit to build in a Cedar Park flood zone?

Yes, § 3.03.006(c) requires a development permit for any structure or land-use change within a FEMA-mapped special flood hazard area before work begins.

Which FEMA maps does Cedar Park use?

The city adopted both the Williamson County FIRM (Sept. 6, 2008) and the Travis County FIRM (Jan. 6, 2016) by reference, since Cedar Park straddles both counties.

Sources & Official References

[1]Cedar Park Code of Ordinances (eCode360)

Other rules in Cedar Park

Parking Rules: Overnight ParkingSome Restrictions Parking Rules: RV & Boat ParkingSome Restrictions Erosion ControlSome Restrictions Stormwater ManagementSome Restrictions Flood Elevation RequirementsSome Restrictions Noise Ordinances: Vehicle NoiseHeavy Restrictions Parking Rules: Loading ZonesSome Restrictions Parking Rules: EV ChargingSome Restrictions Parking Rules: Driveway RulesSignificant Restrictions

All Cedar Park rules

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