Is Napa, CA Safe to Buy? Home Safety Score 57/100
Score 57/100 · Risk: moderate-high · Water Grade C · Updated 2026-05-03
Napa has moderate-to-high risk. Several risk factors require careful evaluation.
Data: EPA SDWIS, FEMA NFIP, Census ACS, EPA Radon Zones Last verified: 2026-05-03
Safety upgrade budgets in Napa sit at the more accessible end of the remediation spectrum — a practical planning number rather than a significant equity concern, and one that most homeowners here can work with through routine financial preparation.
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. Napa scores 57/100 with a "moderate-high" risk level.
Remediation Cost Breakdown
Estimated costs to address safety issues for a typical home in Napa:
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 Napa's 3 ZIP codes.
| ZIP Code | Score | Grade | |
|---|---|---|---|
| 94558 | 53 | D | View report → |
| 94559 | 53 | D | View report → |
| 94581 | 64 | C | View report → |
Home Safety Overview
Napa, California has moderate-to-high risk for homebuyers. The average home safety score is 57/100 across 3 ZIP codes. Several risk factors require careful evaluation during due diligence.
Safety Score Card
A composite view of Napa's key risk indicators:
| Risk Factor | Value | Assessment |
|---|---|---|
| Water Quality | Grade C (57/100) | Moderate risk |
| Lead Risk | 0.1025 mg/L | Elevated risk |
| Flood Risk | 67% in flood zones | Elevated risk |
| Radon | Zone 3 (Low) | Low risk |
| Air Quality | AQI 41 (Good) | Low risk |
Cost to Fix: Remediation Breakdown
Estimated costs to address safety issues for a typical home in Napa:
| Component | Estimated Cost |
|---|---|
| Lead | $4K |
| Flood Insurance | $2K |
| Total (low estimate) | $4K |
| Total (mid estimate) | $6K |
| Total (high estimate) | $8K |
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 Napa's ZIP codes. Lower scores indicate more risk factors:
Napa vs. Nearby California Cities
How Napa's overall risk compares to similar cities in California:
| City | Water Grade | Lead ZIPs Over Limit | Flood Claims | Population |
|---|---|---|---|---|
| Napa | C | 3 | 1,159 | 86,754 |
| Cardiff By The Sea | C | 0 | 20 | 86,458 |
| Camarillo | B | 0 | 30 | 87,586 |
| Folsom | B | 0 | 28 | 85,638 |
Homebuyer Safety Checklist for Napa
Before purchasing a home in Napa, 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)
- 3 ZIP codes exceed EPA lead limits — test lead specifically
Radon
- Conduct a radon test ($15-$30 for short-term kit, $150-$300 for professional)
Flood Risk
- Check the property's FEMA flood zone at msc.fema.gov
- Ask about flood history and past insurance claims
- 67% of Napa 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
- 72% of Napa 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.
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