Elevation Certificates in Bexar County, TX (2026)
Bexar County's creek and river network crosses many of the city of San Antonio's most established neighborhoods. The San Antonio River, Leon Creek, Salado Creek, and Olmos Creek all have FEMA-mapped flood zones that affect thousands of properties. For homeowners and businesses in or near these zones, an elevation certificate is a document that directly affects flood insurance premiums, building permits, and flood zone status challenges.
What an Elevation Certificate Does
An elevation certificate is a FEMA-standardized document completed by a licensed surveyor or engineer. It records your building's elevation, including the lowest floor, in relation to the Base Flood Elevation (BFE) on the current FEMA flood map. The BFE is the water surface level expected during a 100-year flood event at your location.
Flood insurance premiums under the National Flood Insurance Program (NFIP) are tied to the relationship between your building's elevation and the BFE. If your building is above the BFE, your premium is lower. If it is below, your premium is higher. An elevation certificate makes that relationship official and documentable.
Flood Risk Areas in Bexar County
San Antonio River
The San Antonio River flows through the heart of the city and is protected and engineered throughout much of downtown. The San Antonio River Improvements Project has added miles of linear park and flood infrastructure. But older neighborhoods along the river outside the improved channel still have FEMA flood zone exposure.
Leon Creek
Leon Creek flows south through Leon Valley and the western portions of San Antonio before joining the Medina River. FEMA maps show Zone AE along much of the creek's length through Bexar County. Neighborhoods in Leon Valley and along Culebra Road have had significant flooding history.
Salado Creek
Salado Creek runs through north and east San Antonio, passing through Fort Sam Houston and northeast neighborhoods before exiting the county. Residential areas in the Salado Creek watershed, particularly lower-lying stretches, have FEMA flood zone exposure.
Olmos Creek
Olmos Creek drains the Alamo Heights and Olmos Park neighborhoods north of downtown. Olmos Dam provides some flood control, but downstream areas have flood zone exposure. Properties along the creek corridor in Alamo Heights and northeast San Antonio may need elevation certificates.
When to Get an Elevation Certificate in Bexar County
- Your property is in a FEMA Special Flood Hazard Area (Zone AE, A, or AO)
- Your lender requires flood insurance as a loan condition
- You are applying for a building permit in a flood zone area of San Antonio
- You want to apply for a Letter of Map Amendment (LOMA) to challenge your flood zone designation
- You are buying a property in a flood zone and want to estimate future insurance costs
Elevation Certificate Costs in Bexar County
| Property Type | Typical Cost Range |
|---|---|
| Standard single-family home | $400 to $650 |
| Larger residential or complex lot | $550 to $800 |
| Commercial property | $800 to $2,500+ |
How to Get an Elevation Certificate
- Step 1: Check your flood zone at msc.fema.gov to confirm you are in or near a mapped flood zone.
- Step 2: Look up your parcel at bcad.org for your parcel ID and legal description.
- Step 3: Contact a licensed RPLS and provide your address, parcel ID, and the purpose of the certificate.
- Step 4: The surveyor visits the site, measures building elevations, and completes the FEMA Elevation Certificate form.
- Step 5: You receive a sealed certificate to provide to your insurer, lender, or permit office.
Find an Elevation Certificate Surveyor in Bexar County
Our directory includes licensed RPLS professionals across Bexar County who can complete your elevation certificate. Whether your property is near the San Antonio River, along Leon Creek in Leon Valley, in the Salado Creek watershed, or anywhere else in the county where flood zones are a factor, you can find a qualified surveyor in our directory today.