Data-driven insights for local properties

Complete Property Analysis

Environmental risk, tax analysis, and property details for 6729 Sylvan Rd, Houston, TX 77023

HCAD #0622080140017
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🌍Environmental Assessment

This comprehensive report analyzes both flood risk and industrial pollution exposure for this property. The assessment combines multiple data sources including USGS elevation, FEMA flood zones, historical storm modeling, and EPA Toxic Release Inventory records.

🌊Flood Risk Analysis
FEMA Zone X
Property Overview

This section shows the fundamental characteristics of the property, including its elevation above sea level, FEMA flood zone designation, and our calculated overall flood risk rating based on historical data and topographic analysis.

Address
6729 Sylvan Rd, Houston, TX 77023
Building Size
2,117sqft
Total structure area from HCAD building records.
Elevation
24.77 ft
Height above sea level from USGS data.
FEMA Flood Zone
X
Moderate to Low Risk - Outside 500-year floodplain
Overall Risk
Very High
Property flooded at 9.84ft depth.
Risk Assessment Outputs

These detailed metrics show the technical outputs from our flood risk model. They include predicted water depths at the property during a 5000-year flood event and estimated flood damage based on USACE methodology.

Risk Rating
Very High
Flood Depth
9.84 ft±0.5 ft
Depth of water above ground level.
Water Surface Elevation (WSE)
34.61 ft
Water surface elevation relative to sea level (NAVD88 datum).
Area Inundated
168.8 acres
57.2% of 500m radius flooded.
Nearest Bayou Stage
N/A
No nearby bayou within monitoring range
Depth-Damage (HCAD Valuation)
$153,487
Based on HCAD building value of $236,135.
Depth-Damage (Neighborhood)
$192,715
Based on neighborhood replacement cost.
Analysis Method
COG Combined 5000 Model
Raster-based flood inundation query
Flood Simulation

This simulation shows whether the property would flood based on a 5000-year flood event with 3m (9.84ft) water level. Use the interactive tool to explore different scenarios.

Property Would Be Flooded
Flood Depth: 9.84 feet
Severity
Severe
Adjust Flood Simulation

The analysis above uses default settings (5000-year flood, 3m/9.84ft water level). To explore different flood scenarios with interactive maps, return to the main tool:

Open Interactive Analysis Tool
Flood Risk Recommendations

Based on the property's flood risk profile, here are specific action items to consider.

#1
Minimal flood hazard area - property outside mapped high-risk zones
#2
Flood insurance available at preferred rates - over 25% of claims occur in low-risk areas
#3
Review official FEMA Flood Insurance Rate Map (FIRM) for detailed flood zone boundaries
#4
Contact Harris County Flood Control District (HCFCD) for drainage projects and flood information
🏭Industrial Pollution Exposure
44.7th percentile
Property Pollution Ranking
Moderate
Higher pollution than 55% of Houston homes
Compares pollution within 2mi against 10,000 Houston properties. Lower percentiles = higher pollution.
Industrial Pollution Nearby (10 Years)
20 thousandlbs
Above Typical
3.0x more than typical Houston property
≈ 1 dump trucks of chemicals within 2 miles
Air Pollution (10 Years)
20 thousandlbs
Above Typical
4.1x more than typical Houston property
Includes fugitive emissions (leaks) and stack emissions (smokestacks).
Water Pollution (10 Years)
175lbs
High
Discharges to bayous, streams, and drainage systems.
Facilities Nearby
2
Industrial facilities within 2 miles
💡
Why It Matters: High chemical activity nearby can indicate industrial zones, truck traffic, or potential odor and noise issues. These factors may affect air quality, long-term property desirability, and neighborhood character. This data helps you understand the industrial footprint around your property.
Houston Metro Benchmarks

Comparison with typical Houston properties (based on 10,000 randomly sampled homes). All measurements are for chemicals released within a 2-mile radius.

PeriodTotalAirWater
Typical Houston Property (2014-2024)6,524 lbs4,822 lbs0 lbs
This Property (2014-2024)19,789 lbs19,614 lbs175 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)10,519 lbs10,517 lbs3 lbs
How This Property Compares to Houston Metro

Based on a random sample of 10,000 Houston properties, this chart shows the distribution of pollution levels across the metro area. The highlighted bar indicates where this property falls compared to other homes. Lower percentiles mean higher pollution exposure.

0-9thMost Polluted
9.9%
10-19th
10.1%
20-29th
9.9%
30-39th
10.1%
40-49th
9.7%
50-59th
10.2%
60-69th
6%
70-79th
5.8%
80-89th
4.3%
90-100thLowest Pollution
34.2%
Higher pollution than 55% of Houston homes
Each bar's width represents the percentage of Houston homes in that pollution range. This property ranks in the 40-49th percentile (slightly higher than average).
📋
Top chemicals released near this property (past 10 years):
Xylene (mixed isomers), Toluene, Manganese, Nitric acid, Lead
View the full list of 10 chemicals below.
Chemicals Released (2014-2024, 10-Year Total)(10 chemicals)
#ChemicalCAS#Air (lbs/10yr)Water (lbs/10yr)Total (lbs/10yr)
1Xylene (mixed isomers)1330-20-710,496 lbs0 lbs10,496 lbs
2Toluene108-88-37,966 lbs0 lbs7,966 lbs
3Manganese7439-96-5500 lbs80 lbs580 lbs
4Nitric acid7697-37-2397 lbs0 lbs397 lbs
5Lead7439-92-1144 lbs95 lbs239 lbs
6Chromium compounds (except for chromite ore mined in the Transvaal Region)N09076 lbs0 lbs76 lbs
7Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)N09019 lbs0 lbs19 lbs
8Nickel compoundsN49510 lbs0 lbs10 lbs
9Lead compoundsN4204 lbs0 lbs4 lbs
10Lead And Lead CompoundsN4202 lbs0 lbs2 lbs
📋
Top chemicals released near this property (2024 only):
Xylene (mixed isomers), Lead, Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)
View the full list of 3 chemicals reported within 2 miles for 2024.
Chemicals Released (2024 Only)(3 chemicals)
#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
1Xylene (mixed isomers)1330-20-710,496 lbs0 lbs10,496 lbs
2Lead7439-92-114 lbs3 lbs17 lbs
3Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)N0906 lbs0 lbs6 lbs
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