Manatee County's substantial improvement rule

What the county says

Manatee County uses the same 50 percent line as federal flood rules, measured against the building's market value before the improvement starts. The county's substantial improvement page adds a local detail: the rule applies to work "taking place during a one-year period."

The county says that one-year period begins on the date of the certificate of completion of the first improvement or repair. The page does not say how the period ends, so ask the floodplain office if you are planning more than one project. For the general rule, see our guide to the FEMA 50 percent rule.

What this means for a phased project

If you finish a bathroom this spring and plan a kitchen the same year, the county may add them together. Splitting a big job into pieces does not reset the count inside the one-year period. Tell the office everything you plan, not only the first phase.

How the county sets market value

The county's post-storm guidance says market value is estimated from the tax assessment, excluding land and features. An owner may instead submit a certified appraisal dated within 12 months, using the Actual Cash Value approach. If your assessed value looks low or high for the building, an appraisal is the option the county names.

The elevation certificate step

For a building in a special flood hazard area, the county asks for an elevation certificate or survey. There is a way out: if the floor and the equipment are at or above the Flood Protection Elevation, the county says the 50 percent rule does not apply. That is a real reason to get the certificate early. It can settle the question before you design anything.

If the rule applies

The county says substantially damaged or improved buildings generally must be elevated to the higher of two numbers: the Flood Protection Elevation (the base flood elevation plus 1 foot) or the Design Flood Elevation. Elevating a structure requires a building permit. So does fill or a grade change in the floodplain, and the county says any alteration to a building in the floodplain needs a permit. Contact Development Services before you start.

Day-to-day work like a kitchen remodel may not trigger anything. A home addition or a major repair is where the cost test matters.

Who to call and what to bring

The county's Floodplain Management Section handles this. The county flood page lists the email Flood@mymanatee.org, and the main number for Development Services is 941-748-4501. County pages show different extensions for the floodplain office, so ask the operator for Floodplain Management. The county charges a fee for a written flood determination.

Bring your address or parcel ID, an elevation certificate if you have one, and a written scope of the work. To check your flood zone first, read how to look up your Manatee County flood zone.

A worked example with round numbers

This example is made up to show the math. Say the county's market value for your building, excluding land, is $280,000. Fifty percent is $140,000. A bathroom remodel in January and a kitchen remodel in October could be added together if the county treats them as work in the same one-year period. If the two together cost $140,000 or more, the rule could apply, unless your floor and equipment are already at or above the Flood Protection Elevation.

Your real numbers will differ. The point is to ask early and ask about everything you plan.

How Hildebrand handles this kind of work

Hildebrand Construction & Remodeling is a Florida Certified Building Contractor (license CBC1257253) in Palmetto. On any project in a flood zone we ask the right office how the rule applies before we write the estimate, so you do not learn about elevation after you sign. We pull every required permit and meet Florida Building Code inspections. See how a job runs on our process page.

The in-home visit and written estimate are free, with no trip fee.

Questions homeowners ask