What an Elevation Certificate Actually Tells You About a Riverfront Property

An explanation of what an elevation certificate is, why it matters for flood insurance, and how to read it when considering a property near water.

An elevation certificate is a document that records how high a structure sits relative to the base flood elevation set for its location. It sounds technical because it is technical, but the number it produces has a very practical effect: it is one of the main inputs a flood insurance carrier uses to decide what to charge, or whether to offer coverage at all.

The certificate is prepared by a licensed surveyor or engineer. It measures the elevation of the lowest floor of the structure, including things like crawl spaces or garages depending on how the building is constructed, and compares that to the flood elevation the federal government has mapped for that area. The difference between those two numbers, higher or lower, has a direct relationship to insurance cost.

If a structure sits above the base flood elevation by a comfortable margin, insurance is often more affordable and easier to obtain. If it sits at or below that elevation, premiums tend to rise, and in some cases a carrier may decline to write a policy under standard terms. This is true even for two houses that look similar from the street or sit close to each other, because the elevation of the actual living space, not just the lot, is what gets measured.

Not every property has a current elevation certificate on file. If one does not exist, you can request that the seller obtain one, or you can order one yourself as part of your due diligence. It costs money and takes some time, but it is far cheaper and faster to get this information before you are under contract than to discover the insurance implications after.

When you are looking at property near the Tennessee River, ask whether an elevation certificate exists and how recent it is. Flood maps get updated periodically, and a certificate based on an old map may not reflect current zone designations. A property's flood zone and its elevation certificate work together to tell the real story about insurability, and that story is worth knowing before you fall in love with a view.