Add a free flood zone checker to your website

One line of code puts an instant FEMA flood zone, EPA radon, and air-quality lookup on your site — for any US address your visitors type. No API key, no account, no cost.

Live demo

Pick what it checks

The demo on the left updates live. Whatever you pick is reflected in the embed code below.

Copy this in

Paste this where you want the checker to appear. Works on WordPress, Squarespace, Wix, Webflow — anywhere that allows a custom HTML block.

Options

AttributeWhat it does
data-topicflood (default), radon, or air
data-refAny short label for your site (e.g. smith-realty) so we can credit referrals back to you

Who uses it

Real-estate agents

Give listing-page visitors instant federal risk data — and look like the agent who did their homework.

Home inspectors

Add a free property-risk lookup next to your booking form. Buyers checking flood zones are buyers booking inspections.

Mortgage & insurance

Flood zone drives whether insurance is mandatory. Let clients check before they ask you.

Frequently asked questions

Is it really free?
Yes — completely free, no API key, no account, no usage limit for normal site traffic. We ask only that you keep the small “Powered by myplot.ai” credit, which links back to us.
Where does the data come from?
FEMA's National Flood Hazard Layer for flood zones, the EPA radon zone map for radon, and EPA AirNow for live air quality — the same federal sources behind our full property reports.
Will it slow down or break my site?
No. It loads lazily in an isolated iframe, so it can't conflict with your site's styles or scripts, and it doesn't load until needed.
Can I check radon or air quality instead of flood?
Yes — set data-topic="radon" or data-topic="air". Use the tabs above to switch the demo and copy the matching code.

Questions or want a custom build for a brokerage? [email protected].