Data-driven insights for local properties

Complete Property Analysis

Environmental risk, tax analysis, and property details for 427 Bolden St, Houston, TX 77029

HCAD #0141140210013
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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
427 Bolden St, Houston, TX 77029
Building Size
1,090sqft
Total structure area from HCAD building records.
Elevation
28.85 ft
Height above sea level from USGS data.
FEMA Flood Zone
X
Moderate to Low Risk - Outside 500-year floodplain
Overall Risk
Very Low
Risk based on FEMA zone and simulation.
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 Low
Flood Depth
0 ft±0.5 ft
No flooding at current water level.
Water Surface Elevation (WSE)
N/A
Water surface elevation data not available.
Area Inundated
26.7 acres
9.0% of 500m radius flooded.
Nearest Bayou Stage
N/A
No nearby bayou within monitoring range
Depth-Damage (HCAD Valuation)
$0
Property not flooded. No damage to calculate.
Depth-Damage (Neighborhood)
$0
Property not flooded. No damage to calculate.
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 Safe
Safety Margin: 0 feet
Severity
Safe
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
7.3th percentile
Property Pollution Ranking
Very High
Higher pollution than 93% of Houston homes
Compares pollution within 2mi against 10,000 Houston properties. Lower percentiles = higher pollution.
Industrial Pollution Nearby (10 Years)
16.19 millionlbs
Extremely High
2480.8x more than typical Houston property
≈ 809 dump trucks of chemicals within 2 miles
Air Pollution (10 Years)
3.15 millionlbs
Extremely High
653.8x more than typical Houston property
Includes fugitive emissions (leaks) and stack emissions (smokestacks).
Water Pollution (10 Years)
13.03 millionlbs
Extremely High
Discharges to bayous, streams, and drainage systems.
Facilities Nearby
16
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)16,185,593 lbs3,152,835 lbs13,032,758 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)2,314,390 lbs261,627 lbs2,052,762 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 93% of Houston homes
Each bar's width represents the percentage of Houston homes in that pollution range. This property ranks in the 0-9th percentile (top 10% most polluted).
📋
Top chemicals released near this property (past 10 years):
Nitrate compounds (water dissociable; reportable only when in aqueous solution), Hydrogen cyanide, Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size), Ammonia, Xylene (mixed isomers)
View the full list of 70 chemicals below.
Chemicals Released (2014-2024, 10-Year Total)(70 chemicals)
#ChemicalCAS#Air (lbs/10yr)Water (lbs/10yr)Total (lbs/10yr)
1Nitrate compounds (water dissociable; reportable only when in aqueous solution)N5110 lbs13,016,167 lbs13,016,167 lbs
2Hydrogen cyanide74-90-81,408,014 lbs0 lbs1,408,014 lbs
3Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7664-93-9383,635 lbs0 lbs383,635 lbs
4Ammonia7664-41-7336,948 lbs8,000 lbs344,948 lbs
5Xylene (mixed isomers)1330-20-7159,033 lbs0 lbs159,033 lbs
6n-Butyl alcohol71-36-3137,606 lbs0 lbs137,606 lbs
7Ozone10028-15-6115,228 lbs0 lbs115,228 lbs
8Toluene108-88-394,758 lbs17 lbs94,775 lbs
9n-Hexane110-54-382,185 lbs0 lbs82,185 lbs
10Cyclohexane110-82-780,274 lbs0 lbs80,274 lbs
11Benzene71-43-264,553 lbs10 lbs64,563 lbs
12Propylene115-07-154,391 lbs0 lbs54,391 lbs
13Propionaldehyde123-38-631,241 lbs0 lbs31,241 lbs
14Hydrogen sulfide7783-06-423,987 lbs3,527 lbs27,514 lbs
15Butyraldehyde123-72-822,150 lbs0 lbs22,150 lbs
16Ethylbenzene100-41-420,678 lbs50 lbs20,729 lbs
171,2,4-Trimethylbenzene95-63-617,411 lbs0 lbs17,555 lbs
18Ethylene74-85-116,593 lbs0 lbs16,593 lbs
19Ethylene glycol107-21-114,690 lbs0 lbs14,690 lbs
20Dicyclopentadiene77-73-614,013 lbs0 lbs14,013 lbs
211,4-Dioxane123-91-110,779 lbs0 lbs10,779 lbs
22Carbon disulfide75-15-08,908 lbs0 lbs8,908 lbs
231,3-Butadiene106-99-08,275 lbs0 lbs8,275 lbs
24Cyanide compoundsN1065,934 lbs45 lbs5,979 lbs
25Molybdenum trioxide1313-27-55,795 lbs0 lbs5,795 lbs
26Manganese7439-96-55,228 lbs331 lbs5,559 lbs
27Naphthalene91-20-34,546 lbs0 lbs4,547 lbs
28Isobutyraldehyde78-84-24,080 lbs0 lbs4,080 lbs
29Phenol108-95-21,635 lbs1,804 lbs3,439 lbs
30Zinc compoundsN982233 lbs1,207 lbs2,931 lbs
31Polycyclic aromatic compoundsN5902,356 lbs1 lbs2,365 lbs
32Styrene100-42-52,274 lbs0 lbs2,275 lbs
33Cumene98-82-82,256 lbs0 lbs2,256 lbs
34Phthalic anhydride85-44-92,000 lbs0 lbs2,000 lbs
35Vinyl acetate108-05-41,608 lbs0 lbs1,608 lbs
36Lead7439-92-11,110 lbs383 lbs1,493 lbs
37Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-01,460 lbs0 lbs1,460 lbs
38Carbonyl sulfide463-58-11,451 lbs0 lbs1,451 lbs
39Nickel compoundsN495654 lbs489 lbs1,143 lbs
40Acetaldehyde75-07-01,011 lbs0 lbs1,011 lbs
41Phenanthrene85-01-8937 lbs0 lbs937 lbs
42Methanol67-56-1932 lbs0 lbs932 lbs
43Vanadium compoundsN770144 lbs509 lbs653 lbs
441,1,1,2-Tetrachloroethane630-20-6434 lbs0 lbs434 lbs
45Cresol (mixed isomers)1319-77-3232 lbs0 lbs232 lbs
46Lead And Lead CompoundsN420204 lbs17 lbs222 lbs
47Mercury compoundsN458200 lbs2 lbs203 lbs
48Nickel And Nickel CompoundsN49566 lbs123 lbs189 lbs
49Cobalt compoundsN096131 lbs24 lbs155 lbs
50Mercury And Mercury CompoundsN458109 lbs0 lbs109 lbs
51Lead compoundsN42047 lbs52 lbs99 lbs
52Dimethylamine124-40-390 lbs0 lbs90 lbs
53Anthracene120-12-744 lbs0 lbs44 lbs
54Cobalt And Cobalt CompoundsN09642 lbs0 lbs42 lbs
55Antimony compoundsN01038 lbs0 lbs38 lbs
56Nickel7440-02-035 lbs0 lbs35 lbs
57Allyl alcohol107-18-634 lbs0 lbs34 lbs
58Benzo[g,h,i]perylene191-24-228 lbs0 lbs28 lbs
59tert-Butyl alcohol75-65-022 lbs0 lbs22 lbs
60Methoxone sodium salt3653-48-320 lbs0 lbs20 lbs
61Triethylamine121-44-817 lbs0 lbs17 lbs
62Acrolein107-02-813 lbs0 lbs13 lbs
63Mercury7439-97-612 lbs0 lbs12 lbs
64Hydroquinone123-31-99 lbs0 lbs9 lbs
65Diaminotoluene (mixed isomers)25376-45-84 lbs0 lbs4 lbs
66Pyridine110-86-13 lbs0 lbs3 lbs
67Chloroethane75-00-32 lbs0 lbs2 lbs
68p-Cresol106-44-52 lbs0 lbs2 lbs
692,4-Diaminotoluene95-80-71 lbs0 lbs1 lbs
70Trichloroethylene79-01-61 lbs0 lbs1 lbs
📋
Top chemicals released near this property (2024 only):
Nitrate compounds (water dissociable; reportable only when in aqueous solution), Hydrogen cyanide, Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size), Ammonia, Ozone
View the full list of 41 chemicals reported within 2 miles for 2024.
Chemicals Released (2024 Only)(41 chemicals)
#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
1Nitrate compounds (water dissociable; reportable only when in aqueous solution)N5110 lbs2,051,661 lbs2,051,661 lbs
2Hydrogen cyanide74-90-8103,731 lbs0 lbs103,731 lbs
3Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7664-93-950,799 lbs0 lbs50,799 lbs
4Ammonia7664-41-728,219 lbs1,027 lbs29,246 lbs
5Ozone10028-15-625,701 lbs0 lbs25,701 lbs
6Xylene (mixed isomers)1330-20-714,849 lbs0 lbs14,849 lbs
7Cyclohexane110-82-77,486 lbs0 lbs7,486 lbs
8Toluene108-88-36,118 lbs4 lbs6,122 lbs
9Ethylene glycol107-21-15,094 lbs0 lbs5,094 lbs
10Benzene71-43-24,935 lbs4 lbs4,939 lbs
11Propylene115-07-13,529 lbs0 lbs3,529 lbs
12Molybdenum trioxide1313-27-51,804 lbs0 lbs1,804 lbs
131,2,4-Trimethylbenzene95-63-61,449 lbs0 lbs1,449 lbs
14Ethylbenzene100-41-41,412 lbs4 lbs1,416 lbs
15Carbonyl sulfide463-58-11,041 lbs0 lbs1,041 lbs
161,3-Butadiene106-99-0734 lbs0 lbs734 lbs
17Hydrogen sulfide7783-06-4715 lbs0 lbs715 lbs
18Ethylene74-85-1620 lbs0 lbs620 lbs
19n-Hexane110-54-3607 lbs0 lbs607 lbs
20Carbon disulfide75-15-0484 lbs0 lbs484 lbs
211,4-Dioxane123-91-1328 lbs0 lbs328 lbs
22Lead7439-92-1248 lbs23 lbs270 lbs
23Cumene98-82-8241 lbs0 lbs241 lbs
24Naphthalene91-20-3241 lbs0 lbs241 lbs
25Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-0221 lbs0 lbs221 lbs
261,1,1,2-Tetrachloroethane630-20-6212 lbs0 lbs212 lbs
27Phenol108-95-2164 lbs0 lbs164 lbs
28Styrene100-42-5159 lbs0 lbs159 lbs
29Methanol67-56-1152 lbs0 lbs152 lbs
30Lead And Lead CompoundsN420128 lbs7 lbs135 lbs
31Zinc compoundsN98222 lbs32 lbs54 lbs
32Cobalt And Cobalt CompoundsN09642 lbs0 lbs42 lbs
33Polycyclic aromatic compoundsN59038 lbs0 lbs38 lbs
34Phenanthrene85-01-836 lbs0 lbs36 lbs
35Mercury And Mercury CompoundsN45829 lbs0 lbs30 lbs
36Dimethylamine124-40-323 lbs0 lbs23 lbs
37Benzo[g,h,i]perylene191-24-28 lbs0 lbs8 lbs
38Vinyl acetate108-05-45 lbs0 lbs5 lbs
39Acetaldehyde75-07-01 lbs0 lbs1 lbs
40Cresol (mixed isomers)1319-77-31 lbs0 lbs1 lbs
41Anthracene120-12-71 lbs0 lbs1 lbs
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