Data-driven insights for local properties

ZIP Code 77503

6,579 properties in this area

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77503 Summary Statistics

Flood risk, pollution data, and real estate statistics for this area

Area Overview

The majority of properties (98%) sit in FEMA Zone X with minimal flood risk. At an average elevation of 31.5 feet above sea level, this is a moderate elevation area for the Houston region. Properties here have moderate pollution levels compared to the Houston metro, with 71% within 2 miles of facilities releasing known carcinogens.

Flood Risk Summary

FEMA Flood Zones

FEMA designates flood zones based on flood risk. Flood insurance is required for high-risk zones with federally backed mortgages.

XMinimal Risk6,431 (97.8%)

Outside 100-year floodplain. Flood insurance optional but recommended.

AEHigh Risk141 (2.1%)

1% annual flood chance with base flood elevations. Insurance required.

AHigh Risk5 (0.1%)

1% annual flood chance. Flood insurance required for federally backed mortgages.

AOHigh Risk2 (0.0%)

Shallow flooding 1-3 ft from rivers/streams. Insurance required.

Flood Risk Level

Our flood risk assessment combines FEMA flood zone, elevation, and proximity to bayous into a single rating.

Very Low6,431
97.8%
Moderate148
2.2%
Average Ground Elevation31.5 ftAbove sea level. Higher elevation generally means lower flood risk.

Pollution Summary

Based on EPA Toxics Release Inventory (TRI) data. TRI tracks industrial facilities that release toxic chemicals into air, water, or land.

Pollution Exposure Level64.9/100(Moderate)Higher = more pollution exposure from nearby industrial facilities.
Properties Near Carcinogen Sources70.5%Within 2 miles of facilities releasing known carcinogens.
Properties Near PBT Sources48.1%PBTs (Persistent Bioaccumulative Toxics) accumulate in the environment and food chain.
Avg. TRI Facilities Nearby7Average number of TRI-reporting industrial facilities within 2 miles of properties.

Real Estate Summary

Based on 2025 Harris County Appraisal District (HCAD) data for residential properties.

Property Values

Median Home Value$200,426
Average Home Value$234,654
Year-over-Year Change+2.69%

Home Characteristics

Average Home Size1,844 sq ft
Average Lot Size10,022 sq ft
Average Year Built1968

Based on 5,473 residential properties in this ZIP code.

Home Age Distribution

Before 1950278
4.9%
1950-19693,327
58.8%
1970-19891,143
20.2%
1990-2009665
11.8%
2010+241
4.3%

Property Types

Real, Residential, Single-Family5,417 (74.6%)
Real, Commercial517 (7.1%)
Personal Prop. Mobile Home346 (4.8%)
Other Exempt (Government)285 (3.9%)
Real, Vacant Lots/Tracts (In City)172 (2.4%)

Recent Permits (Last 5 Years)

Disaster Review213
Additions or Remodeling113
New Dwelling - permit26
Extra Features (OB&Y)24
Repairs (Foundation / GM)16

New Construction

Properties with New Construction50
Total New Construction Value$3,487,170
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