Check which homes for sale are in a flood zone

Here's how to check if a house is in a flood zone with ChatGPT or Claude: homes for sale under your budget, checked on FEMA flood maps before you fall for one.

1. 1

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2. 2

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   ChatGPTClaudeMCP & CLI

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   @Firecrawl Use Alexandria to find 3 bedroom homes for sale under $450,000 in Houston and check which ones are in a FEMA flood zone.

   Open in ChatGPT with this prompt
3. 3

   What came back

   Claude Code (Claude Opus 5.5) sent back, word for word:

   Of the 41 three-bedroom Houston listings I found under $450K, 7 are in a FEMA Special Flood Hazard Area (Zone AE, the 1% annual-chance flood zone). Lenders usually require flood insurance for homes in these areas. Three more are in the moderate-risk zone (shaded Zone X).

   In the high-risk flood zone (Zone AE):

   Address	Price	Beds/Baths	Sq ft
   5306 Pickfair St, 77026	$259,000	3/2	1,500
   5710 Saxon Dr, 77092	$240,000	3/2	1,404
   7510 Baneway Dr, 77072	$219,990	3/2	1,457
   3123 Hazel Park Dr, 77082	$269,000	3/2	2,078
   15702 Fern Ridge Dr, 77084	$285,000	3/2	1,540
   13435 Chipman Glen Dr, 77082	$255,000	3/2	1,687
   2702 Summer Indigo Trl, Pearland 77089	$384,990	3/3	2,134

   Moderate risk (Zone X, 0.2% annual chance; flood insurance usually not required):

   • 7127 Kason Falls Ct, 77049: $239,900
   • 11914 Kirkbriar Dr, 77089: $116,000
   • 10344 Cook Rd #344, 77099: $125,000 (townhouse)

   Minimal risk (outside mapped flood hazard areas), 31 homes. Some of the larger or better-value ones:

   • 1102 Sherwood Run, 77043: $418,000, 3/3, 2,481 sq ft
   • 3510 Ledgestone Dr, 77059: $365,000, 3/3, 2,516 sq ft
   • 3408 Garapan St #C, 77091: $359,900, 3/3, 1,892 sq ft
   • 9645 Ashville Dr, 77051: $325,000, 3/2, 2,073 sq ft
   • 7837 Detroit St, 77017: $318,000, 3/2, 1,864 sq ft
   • 12615 Foxburo Dr, 77065: $309,000, 3/2, 1,928 sq ft
   • 9214 Rosewell Ct, 77095: $305,000, 3/3, 2,438 sq ft
   • 3105 Dennis St, 77004: $279,900, 3/3, 2,275 sq ft
   • 11510 Primwood Dr, 77070: $250,000, 3/3, 2,448 sq ft
   • 1802 Hamlin Valley Dr, 77090: $220,000, 3/4, 3,096 sq ft
   • …plus 21 more under $340K, including both 4746 and 4748 Mallow St new-construction townhouses at $324,900.

   How I did it:

   • Listings: These come from the Zillow provider in Firecrawl Alexandria. Its search can't filter by price or bedrooms, so I pulled the first 3 result pages for Houston and filtered them myself. This is a sample of the market, not every matching listing. One result is in Humble and one in Pearland, both suburbs inside Zillow's Houston search area.
   • Flood zones: Alexandria has no FEMA flood provider. FEMA's own map server refused the connection, so I used Esri's hosted copy of FEMA's National Flood Hazard Layer, fetched with Firecrawl's URL scrape.
   • Accuracy: Each check uses the point where the listing sits on the map, not the property boundary. A home close to a zone edge could be classified differently. Before you buy, confirm with an official FEMA map extract (FIRMette) from msc.fema.gov or an elevation certificate. Plenty of Houston homes outside mapped zones have flooded, as in Harvey, so it's also worth asking about flood history.

   Firecrawl's rate limit of about 12 requests a minute slowed the flood lookups a lot, so going further (more result pages or a bigger area) will take a while.

   Sources usedZillowOct 20, 2026