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Beaufort County, SC Environmental Rules: Flood Zones (2026)

Some Restrictions

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

FEMA flood zone rules in Beaufort County, SC, 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 before: Any development activity (§ 78-32)
Governing FIRM date: March 23, 2021
Critical development elevation: 500-year flood elevation
Penalty: Up to $200 fine or 30 days
Coverage area: Unincorporated flood hazard areas only

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 Beaufort County, SC.

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 Beaufort County, SC on the FEMA flood map

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

Summary

Beaufort County requires a development or building permit before any development activity begins in a mapped special flood hazard area, under Code of Ordinances § 78-32. The flood damage prevention article applies to the FEMA Flood Insurance Study dated March 23, 2021 and its accompanying maps for every unincorporated flood hazard area under § 78-31.

These county ordinances apply to unincorporated areas of Beaufort County. Incorporated cities within the county may have their own rules that take precedence over county-level regulations.

A development permit or building permit shall be required in conformance with this article prior to the commencement of any development activities.

View official code

Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 55 Update 1 | Community Development Code: Supplement 16).

Full Breakdown

C. Code 1976 § 4-9-30(5), per § 78-26, and § 78-30 limits it to unincorporated areas of special flood hazard within the county's jurisdiction. Section 78-31 identifies those areas using the FEMA Flood Insurance Study dated March 23, 2021 and its flood insurance rate maps, adopted by reference. Section 78-32 then requires a development permit or building permit before any development activity begins, and § 78-38 spells out what the application must show, including the elevation in relation to mean sea level of the proposed lowest floor of any structure and, for nonresidential buildings, a floodproofing certification from a registered professional engineer or architect.

Section 78-66 sets construction standards for that permitted work: new construction and substantial improvements must be anchored against flotation and built with flood-damage-resistant materials, and critical development such as hospitals or fire stations must be elevated to the 500-year flood elevation or the highest known historical flood elevation, whichever is greater.

Violations & Fines

Violating the flood damage prevention article, including building without the required development permit or failing to meet its conditions, is a misdemeanor under § 78-37, punishable by a fine of not more than $200.00 or imprisonment of not more than 30 days, with each day of continued violation a separate offense, in addition to any other lawful action the county takes to prevent or remedy the violation.

Frequently Asked Questions

Do I need a permit to build in a Beaufort County flood zone?

Yes. Section 78-32 requires a development permit or building permit before any development activity begins in a special flood hazard area, and § 78-38 requires the application to show the elevation of the lowest floor relative to mean sea level.

What flood maps does unincorporated Beaufort County use?

The county applies the FEMA Flood Insurance Study dated March 23, 2021, along with its accompanying flood insurance rate maps, to every area of special flood hazard in the unincorporated county under § 78-31.

What is the penalty for building in the floodplain without complying?

Under § 78-37, violating the flood damage prevention article is a misdemeanor punishable by a fine of not more than $200.00 or imprisonment of not more than 30 days, with each day of continued violation counted as a separate offense.

Sources & Official References

[1]Beaufort County Code of Ordinances § 78-32, § 78-31

Other rules in Beaufort County

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All Beaufort County rules

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