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Roswell, GA Environmental Rules: Flood Zones (2026)

Significant Restrictions

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

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

Key Facts

Elevation requirement: 3 ft above base flood elevation
Alt. requirement: 1 ft above future-conditions elevation
New construction in floodway: generally prohibited
Max civil penalty: $1,000 per day

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 Roswell, GA.

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 Roswell, GA on the FEMA flood map

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

Summary

Roswell bars new principal buildings from the future-conditions floodplain unless engineering standards are met, and requires elevation 3 feet above base flood level.

New construction of principal buildings (residential or non-residential), including manufactured homes, shall not be allowed within the limits of the future-conditions floodplain, unless all requirements of subsections 7.4.5(c), (d) and (e) have been met...all new construction shall have the lowest floor, including basement, elevated no lower than three (3) feet above the base flood elevation or one (1) foot above the future-conditions flood elevation, whichever is higher.

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 17 | Unified Development Code: Supplement 5).

Full Breakdown

Roswell's flood damage reduction ordinance blocks new construction of principal buildings, including manufactured homes, within the future-conditions floodplain unless the no-rise and encroachment standards of § 7.4.5 are satisfied. Where construction is allowed, the lowest floor, including any basement, must sit at least 3 feet above the base flood elevation or 1 foot above the future-conditions flood elevation, whichever is higher, and enclosed areas below that must be flood-resistant with flood-vent openings. The floodplain administrator in the public works/environmental department reviews all permits. This applies within the City of Roswell, Fulton County, Georgia, consistent with the National Flood Insurance Program.

Violations & Fines

Building without a floodplain permit or below the required elevation can bring a stop-work order, a withheld certificate of occupancy, civil penalties up to $1,000 per day, and criminal fines up to $1,000 or 60 days' imprisonment.

Frequently Asked Questions

How high must a new home be built above flood level in Roswell?

The lowest floor, including basement, must be elevated at least 3 feet above the base flood elevation or 1 foot above the future-conditions flood elevation, whichever is higher.

Can I build in Roswell's regulatory floodway?

New encroachments, including fill and new construction, are prohibited in the regulatory floodway except for limited infrastructure like bridges and utilities under § 7.4.5(e).

Sources & Official References

[1]Roswell, GA Code of Ordinances § 7.4.6 — Provisions for Flood Damage Reduction

Other rules in Roswell

Parking Rules: Street Parking LimitsSome Restrictions Noise Ordinances: Construction HoursSome Restrictions Stormwater ManagementSome Restrictions Flood Elevation RequirementsSome Restrictions Erosion ControlSignificant Restrictions Animal Ordinances: Cat RulesLight Restrictions Animal Ordinances: Exotic PetsSome Restrictions Fire Regulations: Smoke DetectorsSome Restrictions Landscaping Rules: Tree Removal & Heritage TreesSignificant Restrictions

All Roswell rules

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