Sec. 28-57
Dimensional standards
Servicing
- Applies near
- FIRM/FIS
- Geographic extent
- Areas of special flood hazard identified on the Flood Insurance Rate Map (FIRM) and Flood Insurance Study (FIS) dated June 21, 2023, including Floodway, AE, A, and AO zones.
Uses
Prohibited1
- manufactured home (except in existing manufactured home park or subdivision)
Extracted standards
7 individual requirements pulled out of this section’s prose, each with the sentence it came from.
Floodplain
- A Zone lowest floor elevation above base flood3 ft
the lowest floor shall be elevated to or above the base flood level by three (3) feet.
- AE Zone maximum flood rise without CLOMR1 ft
no new construction ... shall be permitted ... unless it is demonstrated that the cumulative effect ... will not increase the water surface elevation of the base flood more than one (1) foot
- AO Zone lowest floor elevation above highest adjacent grade (if no depth number)2 ft
If no flood depth number is specified, the lowest floor, including basement, shall be elevated no less than two (2) feet above the highest adjacent grade.
- Floodway encroachment prohibitedProhibitedNot allowed in the district at all, short of rezoning or a variance. unless no rise
Within any floodway area, no encroachments, including fill, new construction, substantial improvements, or other development shall be permitted unless it has been demonstrated ... that the proposed encroachment will not result in any increase in flood levels
- Manufactured homesManufactured homeA dwelling built in a factory to a federal standard and transported to the site. prohibitedProhibitedNot allowed in the district at all, short of rezoning or a variance. except in existing parks
The placement of manufactured homes (mobile homes) is prohibited, except in an existing manufactured home (mobile home) park or subdivision.
- Substantial improvement threshold50 pct
the total cost of which equals or exceeds fifty (50) percent of the market value of the structure before the start of construction
Other
- Maximum accessoryAccessory useA secondary activity customarily incidental to the main use of the lot — a garage, a home office. building size600 sqftsq ftSquare feet. An acre is 43,560 sq ft; a typical suburban lot is 7,000–10,000.
Accessory structures are not to exceed six hundred (600) square feet.
From the ordinance
The Flood Hazard (FH) Overlay District shall consist of the SFHA. ... The following shall apply within the floodway districts of an AE zone ...