Data-driven insights for local properties

Complete Property Analysis

Environmental risk, tax analysis, and property details for 4407 Tilson Ln, Houston, TX 77041

HCAD #0780570030024
🧭Jump to Section
🌍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
4407 Tilson Ln, Houston, TX 77041
Building Size
3,247sqft
Total structure area from HCAD building records.
Elevation
86.44 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)
96.28 ft
Water surface elevation relative to sea level (NAVD88 datum).
Area Inundated
266.9 acres
90.5% of 500m radius flooded.
Nearest Bayou Stage
N/A
No nearby bayou within monitoring range
Depth-Damage (HCAD Valuation)
$100,935
Based on HCAD building value of $155,285.
Depth-Damage (Neighborhood)
$135,687
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
44.6th 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
3.1x 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)
470lbs
High
Discharges to bayous, streams, and drainage systems.
Facilities Nearby
12
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)20,132 lbs19,661 lbs470 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)1,192 lbs1,164 lbs27 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):
Nitric acid, Ammonia, Zinc compounds, Propylene, Certain glycol ethers
View the full list of 16 chemicals below.
Chemicals Released (2014-2024, 10-Year Total)(16 chemicals)
#ChemicalCAS#Air (lbs/10yr)Water (lbs/10yr)Total (lbs/10yr)
1Nitric acid7697-37-28,294 lbs0 lbs8,294 lbs
2Ammonia7664-41-76,249 lbs0 lbs6,249 lbs
3Zinc compoundsN9822,607 lbs457 lbs3,064 lbs
4Propylene115-07-1975 lbs0 lbs975 lbs
5Certain glycol ethersN230565 lbs0 lbs565 lbs
64,4'-Isopropylidenediphenol80-05-7286 lbs5 lbs291 lbs
7Ethylene glycol107-21-1290 lbs0 lbs290 lbs
8Chromium7440-47-3187 lbs0 lbs187 lbs
9Hydrogen fluoride7664-39-350 lbs0 lbs50 lbs
10Triglycidyl isocyanurate2451-62-943 lbs5 lbs48 lbs
11Nickel7440-02-037 lbs0 lbs37 lbs
12Copper7440-50-834 lbs0 lbs34 lbs
13Manganese7439-96-532 lbs0 lbs32 lbs
14Lead compoundsN42010 lbs3 lbs13 lbs
15Cobalt7440-48-42 lbs0 lbs2 lbs
16Lead And Lead CompoundsN4201 lbs0 lbs1 lbs
📋
Top chemicals released near this property (2024 only):
Nitric acid, Ammonia, Zinc compounds, Triglycidyl isocyanurate, Chromium
View the full list of 11 chemicals reported within 2 miles for 2024.
Chemicals Released (2024 Only)(11 chemicals)
#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
1Nitric acid7697-37-2754 lbs0 lbs754 lbs
2Ammonia7664-41-7250 lbs0 lbs250 lbs
3Zinc compoundsN982110 lbs17 lbs127 lbs
4Triglycidyl isocyanurate2451-62-912 lbs5 lbs17 lbs
5Chromium7440-47-313 lbs0 lbs13 lbs
6Nickel7440-02-010 lbs0 lbs10 lbs
7Copper7440-50-87 lbs0 lbs7 lbs
84,4'-Isopropylidenediphenol80-05-71 lbs5 lbs6 lbs
9Manganese7439-96-54 lbs0 lbs4 lbs
10Cobalt7440-48-42 lbs0 lbs2 lbs
11Lead compoundsN4201 lbs0 lbs1 lbs
Loading property data...
🏘️Explore More Properties