Is San Jose, CA Safe to Buy? Home Safety Score 81/100
Score 81/100 · Risk: moderate · Water Grade B · Updated 2026-05-03
San Jose has moderate risk. Some factors warrant attention during the home buying process.
Data: EPA SDWIS, FEMA NFIP, Census ACS, EPA Radon Zones Last verified: 2026-05-03
Although no safety investment is trivial, San Jose's remediation cost range is proportionally modest against home values here — a lower-tier figure within typical planning reach.
What is a home safety score?
The home safety score (0-100) combines multiple environmental risk factors into a single number: water quality grade, lead contamination levels, flood zone exposure, radon risk, and air quality. A higher score means lower overall risk. The score helps homebuyers compare neighborhoods at a glance. San Jose scores 81/100 with a "moderate" risk level.
Remediation Cost Breakdown
Estimated costs to address safety issues for a typical home in San Jose:
Cost ranges are estimates based on national averages. Actual costs vary by property. Get 3 quotes before proceeding.
Per-ZIP Home Safety Scores
Safety scores vary across San Jose's 57 ZIP codes.
| ZIP Code | Score | Grade | |
|---|---|---|---|
| 95110 | 72 | B | View report → |
| 95112 | 72 | B | View report → |
| 95116 | 72 | B | View report → |
| 95125 | 72 | B | View report → |
| 95120 | 77 | B | View report → |
| 95122 | 77 | B | View report → |
| 95127 | 77 | B | View report → |
| 95132 | 77 | B | View report → |
| 95148 | 77 | B | View report → |
| 95101 | 82 | B | View report → |
| 95103 | 82 | B | View report → |
| 95106 | 82 | B | View report → |
| 95108 | 82 | B | View report → |
| 95109 | 82 | B | View report → |
| 95111 | 82 | B | View report → |
Home Safety Overview
San Jose, California has moderate risk for homebuyers. The average home safety score is 81/100 across 57 ZIP codes. Some risk factors warrant attention during the home buying process.
Safety Score Card
A composite view of San Jose's key risk indicators:
| Risk Factor | Value | Assessment |
|---|---|---|
| Water Quality | Grade B (81/100) | Low risk |
| Lead Risk | 0.0045 mg/L | Low risk |
| Flood Risk | 40% in flood zones | Elevated risk |
| Radon | Zone 2 (Moderate) | Moderate risk |
| Air Quality | AQI 50 (Good) | Low risk |
Cost to Fix: Remediation Breakdown
Estimated costs to address safety issues for a typical home in San Jose:
| Component | Estimated Cost |
|---|---|
| Radon | $400 |
| Filtration | $305 |
| Flood Insurance | $632 |
| Pfas | $274 |
| Total (low estimate) | $756 |
| Total (mid estimate) | $2K |
| Total (high estimate) | $3K |
Cost ranges are estimates based on national averages and local data. Actual costs vary by property condition, contractor, and scope of work. Get 3 quotes before proceeding.
Per-ZIP Home Safety Scores
Home safety varies across San Jose's ZIP codes. Lower scores indicate more risk factors:
| ZIP Code | Safety Score | Grade |
|---|---|---|
| 95110 | 72 | B |
| 95112 | 72 | B |
| 95116 | 72 | B |
| 95125 | 72 | B |
| 95120 | 77 | B |
| 95122 | 77 | B |
| 95127 | 77 | B |
| 95132 | 77 | B |
| 95148 | 77 | B |
| 95101 | 82 | B |
| 95103 | 82 | B |
| 95106 | 82 | B |
| 95108 | 82 | B |
| 95109 | 82 | B |
| 95111 | 82 | B |
San Jose vs. Nearby California Cities
How San Jose's overall risk compares to similar cities in California:
| City | Water Grade | Lead ZIPs Over Limit | Flood Claims | Population |
|---|---|---|---|---|
| San Jose | B | 0 | 620 | 1,796,685 |
| Oakland | B | 0 | 264 | 1,444,562 |
| Alameda | C | 0 | 47 | 1,442,800 |
| Albany | C | 0 | 5 | 1,442,800 |
Homebuyer Safety Checklist for San Jose
Before purchasing a home in San Jose, California, complete these checks:
Water Quality
- Request the latest Consumer Confidence Report (CCR) from the water utility
- Test tap water for lead, bacteria, and nitrates ($20-$50 for DIY kit)
Radon
- Conduct a radon test ($15-$30 for short-term kit, $150-$300 for professional)
- San Jose is in Radon Zone 2 (Moderate risk) — testing is strongly recommended
Flood Risk
- Check the property's FEMA flood zone at msc.fema.gov
- Ask about flood history and past insurance claims
- 40% of San Jose is in flood zones — verify insurance requirements
Lead Paint & Pipes
- For homes built before 1978: request lead paint disclosure
- For homes built before 1986: inspect plumbing for lead solder and pipes
- 68% of San Jose homes built before 1986 — pipe inspection recommended
General
- Check for carbon monoxide detectors on every level
- Inspect for visible mold, water stains, or musty odors
- Verify the home's connection to a regulated public water system
Data Sources
- Water quality: EPA SDWIS
- Lead: EPA Lead and Copper Rule
- Flood: FEMA NFIP
- Radon: EPA Radon Zones
- Air quality: EPA AirNow
- Home values: U.S. Census Bureau ACS B25077
- Remediation costs: National cost model (EPA, Census, FEMA data)
Updated daily.
Water Quality Map: San Jose, CA
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
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