Frequently asked questions.

Ampian AI's cost forecasts are built on authoritative federal and market data sources — including US Census American Community Survey housing data, federal energy data for utilities, and government housing and insurance datasets — rather than a single national average. Each forecast is calibrated to your specific address and ownership scenario, so the numbers are data-driven and grounded in real local conditions.

They are informed estimates with uncertainty bounds that reflect how owners actually use their homes, not guarantees. Your property tax may go up after you buy; our guide explains why the tax on a listing may not be yours.

It can. In many states, a sale ends the caps and exemptions that kept the seller's bill low, and the home is valued again at or near its market value, sometimes on a separate bill months later.

Apply for your own homestead exemption soon after closing, because the seller's does not move to you, and see the rules for each state in our guide to property tax after you buy.

It depends on the state. We compared the yearly property tax, as a share of the home's value, of owners who moved in under 2 years ago with owners who moved in 20 or more years ago, using Census survey data for all 50 states and Washington, DC.

Recent buyers pay more

15

Recent buyers pay less

26

No clear difference

10

Recent buyers paid a clearly higher rate in 15 places, led by Alaska, Texas and California, a clearly lower rate in 26, and there was no clear difference in 10. See every state in our 50-state property tax study.

Beyond the home inspection, buyers should check zoning regulations, flood zone status, wildfire and other natural hazard risk, planned construction and development nearby, access to public transportation, school quality, how home values in the neighborhood have appreciated, along with the realistic utility, tax, and maintenance costs so users know whether they can afford the all-in cost of that homeownership.

Our Ampian AI reports compile all of these for a single address using government and public data sources such as FEMA, the US Forest Service, the FHFA House Price Index, and Zoneomics zoning data. Our printable home-buyer due-diligence checklist lists every step, stage by stage.

An Ampian AI report brings together, for one address, everything you would otherwise have to research separately:

• its zoning and land-use classification,
• flood and wildfire risk,
• other natural-hazard exposure,
• nearby development news,
• school quality,
• a realistic forecast of ownership costs like taxes, insurance, utilities, and maintenance,
• and how home values in the area have trended over the past 5 and 10 years.

You can see exactly what this looks like in our example reports.

Ampian AI is a homeownership cost forecasting platform that gives US homebuyers and owners full reports in minutes on any address, covering zoning regulations, natural hazard risks such as flood, wildfire, earthquake, tornado, strong wind, heat wave, and hail, nearby development information, past appreciation trends, and utility and ownership costs.

It is built for ordinary consumers, not investors or enterprises.

Yes, that is a fair comparison, with one important difference. A Carfax report tells you a used car's past — where it has been and what has happened to it.

Ampian AI is about the home you are considering now: it shows the property's current zoning and natural hazard picture — flood, wildfire, earthquake, tornado, strong wind, heat wave, and hail exposure, nearby development, and school quality — alongside how home values in the area have trended over the past 5 and 10 years, and it projects the home's future cost of ownership like taxes, insurance, utilities, and maintenance.

Yes. We publish two full example reports — a True Cost Forecaster sample and a Zoning Oracle sample — so you can see exactly what Ampian AI produces for a real address before you pay for anything.

Whether you're analyzing one property or fifty, Ampian AI has an option for you. You can keep costs low by purchasing individual reports one at a time, or unlock our subscription plans for high-volume, cost-effective analysis. See our pricing page for the current prices.

Every new account gets 2 free preview reports. A preview shows the full layout of a Zoning Oracle or True Cost Forecaster report for your address, with the paid values hidden. A Zoning Oracle preview also shows the map with nearby schools, supermarkets and transit.

Previews never expire, stay on your account if you upgrade, and are kept on the address so you can open them again any time.

Flood zone designations come from FEMA's National Flood Hazard Layer (NFHL). You can look up an address on FEMA's flood map service, or run an Ampian AI report, which checks the FEMA NFHL for the address and combines it with wildfire risk from the US Forest Service and broader hazard data from FEMA's National Risk Index.

A home outside a FEMA high-risk flood zone can still flood: read why “not in a flood zone” doesn't mean no flood risk.

1. AStart with FEMA's free Flood Map Service Center: type the address, note the zone letter, and check whether a new flood map is on the way.
2. BThen look past the map, because flood maps can be years old and often miss flooding from heavy rain.
3. CAsk the seller about past flood claims and an elevation certificate, and get a flood insurance quote for the house.

Our guide walks through how to check if a house is in a flood zone, step by step.

Zillow took First Street's climate risk scores off its listings in November 2025, but the free official maps are still there. Check the address on FEMA's Flood Map Service Center for flood zones and on the Forest Service's Wildfire Risk to Communities site for wildfire, then get an insurance quote for the house itself.

Our guide explains where to check flood and wildfire risk now and what each map can't tell you.

The Zoning Oracle combines trusted public and government data sources to give you a grounded picture of a property’s current standing and risks. It analyzes zoning regulations, school quality, climate exposure, local development activity, and neighborhood appreciation trends over the past 5 and 10 years.

To look up a zoning code yourself, see how to check zoning for any address.

Ampian AI provides an appreciation trends for cumulative appreciation at 5- and 10-year horizons based on historical data built from the FHFA House Price Index, not a guarantee on future appreciation.

They cover different things.

Home inspection

A home inspection examines the physical condition of the structure — roof, systems, foundation.

Ampian AI

Ampian AI covers the things around and about the property that an inspector does not: zoning regulations, natural hazard risk, nearby development, school quality, past appreciation trends, utility and maintenance cost forecasts.

Most buyers benefit from both.

The big home-listing sites are built to help you shop for a home — photos, asking prices, and the past sale history of what is on the market today. Ampian AI is built for the decision before you commit: it shows the current zoning and natural-hazard picture of a specific address and projects its future cost of ownership, whether or not it is for sale, so you understand what owning it would really involve.

Ampian AI draws on government and public data sources, including

• FEMA's National Flood Hazard Layer and National Risk Index,
• the US Forest Service's Wildfire Risk to Communities,
• the FHFA House Price Index,
• the US Census American Community Survey,
• GreatSchools,
• and Zoneomics zoning data.

An AI model then synthesizes these authoritative sources into a single report for your address — we do not invent numbers. Every source is listed on Ampian AI's data-sources page, with notes on coverage and confidence.

Both, in that order. Ampian AI starts from real, named data sources — FEMA flood and risk data, the US Forest Service's Wildfire Risk to Communities, the FHFA House Price Index, the US Census American Community Survey, GreatSchools, and Zoneomics zoning data, among others — and then an AI model reads and combines them into single readable reports for your address. We do not invent numbers; the AI synthesizes the report from those authoritative sources.

Every source is listed on our data-sources page.

Ampian AI operates on a privacy-first model. Your property details and reports are encrypted both in transit and at rest, and we do not sell your personal information or share it with marketers or real estate brokers.

Limited sharing happens only with the trusted service providers who help operate Ampian AI, when we are required to by law, or when you ask us to. You can read the full details on our privacy policy page.