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Flood zones and elevation certificates

FEMA says most homeowners do not need an elevation certificate to buy flood insurance. The exception is a home in a high risk Zone A or high risk coastal Zone V, where the owner may need one to show the property meets local safety standards. Here is how to look up your zone first, from FEMA's own pages and the Texas Water Development Board.

Look up your flood zone

  1. Open the FEMA Flood Map Service Center. The FEMA Flood Map Service Center is the official public source for the flood hazard information made for the NFIP. On the Map Service Center home page you can search by street address, a place name, or longitude and latitude. FEMA
  2. Read the map. Where a county has modernized flood data, the Map Service Center offers an Interactive Map that opens FEMA's National Flood Hazard Layer, showing base flood elevations and flood boundaries without downloading a map file. TWDB says only about half of Texas counties have the modernized digital flood maps. TWDB
  3. Check the date. FEMA warns that a map you download or print may later be superseded by a new map. FEMA suggests checking your flood map every year, since maps are updated from time to time. FEMA
  4. Or ask locally. Your flood map and zone are online at the FEMA Flood Map Service Center, or you can ask your local floodplain administrator. FEMA FloodSmart

The Texas Water Development Board notes that flood insurance rate maps (FIRMs) are free to the public through the FEMA Flood Map Service Center. TWDB

What the zone letters mean

FEMA's flood insurance program defines a flood zone as an area with a specific flood hazard risk. It is used to set insurance requirements and costs, and the zones are shown together on a flood map. FEMA FloodSmart

A, AE, AH, AO, AR, A99

High risk

Zones A, AE, AH, AO, AR and A99 are high risk flood areas.

In communities that take part in the National Flood Insurance Program (NFIP), flood insurance is mandatory in the A zones when the mortgage is government backed.

FEMA FloodSmart

V, VE

High, coastal risk

Zones V and VE are high risk coastal areas, with the added hazard of storm waves.

FEMA FloodSmart

B, shaded X

Moderate risk

Zones B and shaded X carry a moderate flood risk.

FEMA FloodSmart

C, unshaded X

Lower risk

Zones C and unshaded X are at a lower risk of flooding, though not without risk.

FEMA FloodSmart

D

Undetermined risk

Zone D is where flood risk has not been determined because no flood hazard analysis has been done.

FEMA FloodSmart
  • FEMA says one in three flood insurance claims comes from low and moderate risk zones. FEMA FloodSmart
  • On older maps, today's Zone X is labeled Zone C and shaded Zone X is labeled Zone B. TWDB Texas Quick Guide
  • TWDB notes that many flood maps do not show areas at risk of local or urban flooding. TWDB Texas Quick Guide
  • TWDB puts the chance that a non elevated home in the 1% annual chance floodplain is damaged during a 30 year mortgage at 26%. TWDB Texas Quick Guide

When you need an elevation certificate

An elevation certificate shows how high a building sits compared with how high local floodwaters are expected to rise, with its location, features and first floor height. FEMA FloodSmart

TWDB says the certificate is required when the property is in a high-risk flood zone. TWDB Texas Quick Guide

FEMA says most homeowners do not need an elevation certificate to buy flood insurance. FEMA FloodSmart

The exception is a home in a high risk Zone A or high risk coastal Zone V, where the owner may need one to show the property meets local safety standards. FEMA FloodSmart

TWDB says local floodplain rules typically call for an elevation certificate and a permit, and the certificate helps document that a building in the floodplain was built to the community's ordinance. TWDB Texas Quick Guide

Insurance agents use elevation certificates to write and rate flood policies. TWDB Texas Quick Guide

Missouri SEMA describes the NFIP Elevation Certificate as used for floodplain ordinance compliance, insurance rating, and Letter of Map Amendment requests. Missouri SEMA

How to get one

Your home may already have an elevation certificate on file with your community. Ask your local floodplain manager, who often works in the city or county building, permitting or engineering office. FEMA FloodSmart

If none is on file, FEMA says you need to hire a land surveyor, engineer or architect to complete one. FEMA FloodSmart

TWDB says the certificate must be completed and sealed by a licensed surveyor, architect or engineer. TWDB Texas Quick Guide

Find a registered surveyor: Texas surveying firms, Texas license lookup or elevation certificate surveyors.

What it does and does not change

FEMA says an elevation certificate does not set your rate, but it can show discounts. FEMA FloodSmart

Under the NFIP's current pricing, the flood zone and a building's elevation compared with the base flood elevation are no longer the only factors in the premium. FEMA FloodSmart

TWDB notes the certificate by itself cannot be used to waive the requirement to buy flood insurance. TWDB Texas Quick Guide

To challenge a flood zone designation, owners can apply for a Letter of Map Amendment (LOMA) or Letter of Map Revision (LOMR) through FEMA's online LOMC application. FEMA FloodSmart

Published elevation certificate prices

What surveying firms print for an elevation certificate on their own pages, unaveraged. All survey types: survey prices.

FirmWhereWhatPrice as publishedSource
Ramsey Surveying, Inc.Rogers, Arkansas Elevation certificate, Zone A without BFE$750 ramseysurveying.com
Ramsey Surveying, Inc.Rogers, Arkansas Elevation certificate, Zone AE with BFE$850 ramseysurveying.com
Ramsey Surveying, Inc.Rogers, Arkansas Elevation certificate, Zone A with BFE$1,950+ ramseysurveying.com
Starr SurveyingBelton, Texas Elevation certificate estimate$350 - $600 starr-surveying.com
South Texas SurveyingHouston, Texas Elevation certificate estimate$400 to $800+ stsurvey.com
ALTA Survey TexasDallas, Texas Flood elevation survey range$400 to $900 altasurveytexas.com
Cardinal Surveying & Mapping, Inc.Cottleville, Missouri Elevation certificate cost$650 to thousands of dollars cardinalsurveying.com

Questions

Do I need an elevation certificate for flood insurance?

FEMA says most homeowners do not need an elevation certificate to buy flood insurance. The exception is a home in a high risk Zone A or high risk coastal Zone V, where the owner may need one to show the property meets local safety standards.

How do I find my FEMA flood zone?

Your flood map and zone are online at the FEMA Flood Map Service Center, or you can ask your local floodplain administrator. On the Map Service Center home page you can search by street address, a place name, or longitude and latitude.

Who can complete an elevation certificate?

TWDB says the certificate must be completed and sealed by a licensed surveyor, architect or engineer. If none is on file, FEMA says you need to hire a land surveyor, engineer or architect to complete one.

Can an elevation certificate remove the flood insurance requirement?

TWDB notes the certificate by itself cannot be used to waive the requirement to buy flood insurance. To challenge a flood zone designation, owners can apply for a Letter of Map Amendment (LOMA) or Letter of Map Revision (LOMR) through FEMA's online LOMC application.

Sources

Read 2026-10-06. Each fact links to the page it came from, with a short quote matched against that page. fema.gov itself was not read (its robots file does not answer our reader), so FEMA facts come from FEMA's FloodSmart and Map Service Center sites.

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