Cranston, RI Environmental Rules: Flood Elevation Requirements (2026)
Key Facts
- Standard
- Lowest floor at/above base flood elevation
- Governing chapter
- Ch. 17.16, Special Flood Hazard Districts
- Critical facilities
- 500-year flood plus two feet freeboard
- Administered by
- City Inspector of Buildings
- Penalty
- $500 fine per day of violation
Summary
Cranston requires new construction and substantially improved buildings in FEMA special flood hazard areas to have the lowest floor elevated to or above the base flood elevation, or higher if the state building code demands it.
New construction, substantial improvements or repair to substantially damaged structures shall have the bottom of the lowest floor including basement and utilities elevated to or above the BFE or the elevation required by the Rhode Island Building Code (whichever is greater).
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: rev 4824304; v14 updated 2026-05-18).
Full Breakdown
Under Chapter 17.16, Special Flood Hazard Districts, the city's Inspector of Buildings administers development in zones A, AE, AH, AO, A99, V and VE on the FEMA flood insurance rate map. Residential construction, substantial improvements, and repairs to substantially damaged structures must have the bottom of the lowest floor, including the basement and utilities, elevated to or above the base flood elevation or the elevation the Rhode Island Building Code requires, whichever is greater. Non-residential buildings can instead be dry floodproofed to that height. Critical facilities face a stricter standard: elevation or floodproofing to the five hundred-year flood plus two feet of freeboard.
Violations & Fines
Violating any provision of the chapter draws a $500 fine per violation, and each day the violation continues counts as a separate offense.
Frequently Asked Questions
Does Cranston require extra freeboard above the base flood elevation for ordinary new homes?
What counts as a flood hazard zone in Cranston?
Are there tougher rules for fire stations and other critical facilities?
Sources & Official References
Other rules in Cranston
Compare Cranston to another location·View the Rhode Island environmental rules overview
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Flood Elevation Requirements in Nearby Cities
How other cities in this county handle flood elevation requirements.