Risk Before Buy
ZIP Code Risk Report · TN

37405 Insurance Cost & Climate Risk (2026)

37405 in Chattanooga, TN: severe storm and wildfire risk, est. insurance $2,777–$5,268/yr, and buyer guidance before you close.

Chattanooga, Tennessee 37405

Data retrieved: Sep 14, 2026 at 14:51 UTC

Overall Risk

Above the national median (top 35% most at-risk)

County-level composite

Est. Annual Insurance

$2,777 – $5,268

Directional range

Premium Strain

6.21% of median income

severe

Flood Insurance

Not required

Parcel falls outside SFHA

Insurance-first due diligence

What buyers pay for coverage in 37405

  • Directional homeowners estimate: $2,777–$5,268/yr before carrier underwriting.
  • Composite climate risk ranks above the national median (top 35% most at-risk) for 37405.
  • Shop quotes during inspection — TN market pressure can change carrier appetite by ZIP.

Quick buyer brief

What makes 37405 different

A short, indexable summary for buyers comparing 37405 with nearby options in Chattanooga.

37405 ranks above the national median (top 35% most at-risk) for overall climate risk, with the biggest current drivers being tornado or wildfire.

Buyers in this ZIP should budget roughly $2,777 - $5,268/yr for homeowners insurance before carrier-specific adjustments. Flood insurance looks less likely to be mandatory, but parcel checks still matter.

If you are choosing between nearby ZIP codes, compare this page with the city overview and the nearby-ZIP links below before you write an offer.

Chattanooga city overviewFlood insurance guideContract templatesRun free address lookup

Insurance Market Context

These scores are county-level composites derived from FEMA National Risk Index. Individual parcels may differ significantly. This is not a property appraisal.

Market Pressure

MODERATE

Tennessee's admitted-carrier market is showing mild contraction. A broker with state-specific experience helps.

Admitted Market Share

80%

Carriers exiting at 2.7% YoY in Tennessee.

Residual Market

$1,600–$3,300

annual · last-resort
FAIR Plan / Citizens exposure up 14% since 2020.

Premium Strain Index

Insurance is roughly 6.2% of median household income — the First Street 12th National Risk Assessment characterizes anything above 5% as financially unsustainable.

Premium-to-income ratio. Based on state Department of Insurance filings, average annual premiums in this area range from $2,777 to $5,268. Not an insurance quote. The First Street 12th National Risk Assessment characterizes any ZIP above 5% as financially unsustainable.

Not an insurance quote. These figures are derived from public state Department of Insurance filings and are intended to surface market pressure signals. Actual premiums depend on parcel-specific underwriting factors and carrier availability. Consult a licensed insurance broker for a binding quote.

Marion County Hazard Breakdown

Scores below are from the federal National Risk Index at the county level, refined with parcel-level signals where available (FEMA NFHL for flood, USDA WHP for wildfire, USGS PGA for earthquake, NWS for heat).

Below the national median (safer than most)

Hurricane

Low

Above the national median (top 36% most at-risk)

Earthquake

High

Below the national median (safer than most)

Extreme Heat

Low

Above the national median (top 39% most at-risk)

Flood

High

Above the national median (top 33% most at-risk)

Wildfire

High

Top 18% most at-risk nationally

Severe Storm / Tornado

Extreme
Hazard
Risk Level
Score · Source
Hurricane
Below the national median (safer than most)· FEMA
Earthquake
Above the national median (top 36% most at-risk)· USGS
Extreme Heat
Below the national median (safer than most)· NOAA
Flood
Above the national median (top 39% most at-risk)· FEMA
Wildfire
Above the national median (top 33% most at-risk)· USDA
Severe Storm / Tornado
Top 18% most at-risk nationally· FEMA

Local Flood Risk Cost Estimator

Flood insurance costs in Chattanooga, TN

In Chattanooga, TN, the directional annual NFIP flood insurance premium is approximately $1,128 (range $600–$1,523), and the estimated average historical flood claim in Marion is $58,292. Typical mapped exposure aligns with Zone X (moderate / 500-year) (county flood percentile: 61).

NFIP premium (mid)
$1,128/yr
Monthly escrow slice
$50–$127/mo
Avg. paid claim
$58,292
Lender may require
Often optional
Check my flood zoneFlood + escrow calculatorFull Chattanooga flood cost guide

Earthquake Insurance ROI Estimator

CEA-style earthquake coverage math in Chattanooga, TN

In Chattanooga, TN, directional earthquake coverage runs about $2,244/yr with a $112,500 deductible exposure (earthquake percentile: 64). Over 30 years, modeled premium spend is $67,320 vs. $18,615 illustrative expected loss.

Borderline — model expected loss near 30-year premium cost.

Est. annual premium
$2,244/yr
Deductible
$112,500
30-yr premium vs loss
$67,320 / $18,615
Earthquake ROI calculatorEarthquake buyer guide

Wildfire & FAIR Plan Stress Test

Wildfire insurance non-renewal risk in Chattanooga, TN

In Chattanooga, TN, admitted-carrier withdrawal could push coverage through state FAIR / residual market at roughly $7,443/yr — about +$3,420/yr vs. a $4,023 baseline (wildfire percentile: 67).

Non-renewal risk: high

Baseline premium
$4,023/yr
Residual market est.
$7,443/yr
Annual uplift
+$3,420/yr
Wildfire insurance screenFull FAIR Plan ZIP estimator

What each hazard means for you

Expand any card to see the federal source citation and the buyer-specific action items our research team recommends for this hazard profile.

Hurricane Risk

Below the national median (safer than most)Low

NRI inland hurricane / tropical-storm remnant risk: Below the national median (safer than most) for inland wind and rain exposure (county-level, based on historical tropical cyclone tracks). Storm surge does not apply at this inland location.

FEMA · National Risk Index (HRCN)

Earthquake Risk

Above the national median (top 36% most at-risk)High

Above the national median (top 36% most at-risk) for earthquake exposure. USGS PGA: 0.270g (site class D). NRI county percentile: Above the national median (top 30% most at-risk).

USGS · Design Maps (ASCE 7-16) + NRI

Extreme Heat

Below the national median (safer than most)Low

Long-term heat risk: Below the national median (safer than most) (NRI county baseline). This reflects multi-decadal extreme-heat exposure, not the current week's weather.

NOAA · National Risk Index (HWAV)

Flood Risk

Above the national median (top 39% most at-risk)High

County NRI flood risk: Above the national median (top 39% most at-risk) for flood exposure. NFHL parcel query unavailable.

FEMA · National Risk Index

Wildfire Risk

Above the national median (top 33% most at-risk)High

Blended wildfire risk: Above the national median (top 33% most at-risk). USDA Wildfire Hazard Potential at parcel: High (Class 4/5). County NRI wildfire risk: Around the national median. The parcel-level USDA score moderates the county NRI signal.

USDA · WHP + National Risk Index

Severe Storm / Tornado

Top 18% most at-risk nationallyExtreme

NRI severe-storm risk: Top 18% most at-risk nationally for severe-thunderstorm, hail, straight-line wind, and tornado exposure (county-level).

FEMA · National Risk Index (TRND)

FEMA Flood Zone

Is this specific parcel in a Special Flood Hazard Area?

The free address snapshot queries FEMA NFHL point-in-polygon and returns your exact FEMA Flood Zone (A, AE, X, etc.) in seconds.

Run a free address lookup

Carrier Outlook

Tennessee's admitted-carrier market is showing mild contraction. A broker with state-specific experience helps.

Data Sources

FEMA NRINOAAUSGSUSDAEPA
Data Sources & Methodology

FEMA— National Risk Index

Retrieved September 13, 2026

View source

FEMA— National Risk Index (HRCN)

Retrieved September 13, 2026

View source

USDA— WHP + National Risk Index

Retrieved September 13, 2026

View source

USGS— Design Maps (ASCE 7-16) + NRI

Retrieved September 13, 2026

View source

NOAA— National Risk Index (HWAV)

Retrieved September 13, 2026

View source

FEMA— National Risk Index (TRND)

Retrieved September 13, 2026

View source
View full methodology

What buyers should know

Buying in 37405: a risk primer

Before you write an offer on a home in Chattanooga, understand how climate and insurance costs affect long-term ownership in 37405.

37405 in Chattanooga, Tennessee, scores above the national median (top 35% most at-risk) on our composite climate-risk index. That ranking reflects the combined influence of tornado (82), wildfire exposure (67), and earthquake shaking risk (64) in this ZIP code. Before writing an offer, buyers should understand which hazard drives the score and how it shows up in insurance premiums and long-term maintenance costs.

The data below is assembled from five federal sources — FEMA (flood and National Risk Index), NOAA (storm history and heat), USGS (seismic design), and USDA (wildfire hazard potential) — and is refreshed quarterly. Use it as a starting point for due diligence, not a substitute for a licensed inspector, structural engineer, or insurance agent.

Tornado risk in 37405

The tornado score for 37405 is 82 (extreme), which is well above the national median.

For a specific address inside 37405, this score can shift meaningfully. A home on a ridge may have lower flood exposure than one in a valley; a parcel surrounded by irrigated lawn may have lower wildfire exposure than one against open space. The $19 Risk Before Buy report resolves these parcel-level differences and includes a 30-year projection for each hazard.

Wildfire risk in 37405

The wildfire exposure score for 37405 is 67 (high), which is above the national median. 37405 sits in or adjacent to a high wildfire hazard zone. In Tennessee, this affects both insurance availability and utility-side public safety power shutoff (PSPS) risk. Buyers should confirm the parcel's defensible space, roof class, and whether the neighborhood has a FireWise USA designation.

For a specific address inside 37405, this score can shift meaningfully. A home on a ridge may have lower flood exposure than one in a valley; a parcel surrounded by irrigated lawn may have lower wildfire exposure than one against open space. The $19 Risk Before Buy report resolves these parcel-level differences and includes a 30-year projection for each hazard.

Earthquake risk in 37405

The earthquake shaking risk score for 37405 is 64 (high), which is around or slightly above the national median. 37405 has moderate earthquake exposure. Most homeowners policies exclude earthquake damage here, so buyers should price a standalone earthquake policy or rider and verify whether the home is bolted to the foundation and has a cripple-wall retrofit.

For a specific address inside 37405, this score can shift meaningfully. A home on a ridge may have lower flood exposure than one in a valley; a parcel surrounded by irrigated lawn may have lower wildfire exposure than one against open space. The $19 Risk Before Buy report resolves these parcel-level differences and includes a 30-year projection for each hazard.

Insurance is where climate risk becomes a monthly payment. In 37405, our directional estimate for a standard homeowners policy plus required hazard coverage is $2,777 – $5,268 per year. That estimate assumes a mid-range home and does not include optional coverages such as earthquake, flood (where not required), or higher wind deductibles.

Relative to local incomes, that premium range equals approximately 6.21% of the Marion County median household income — a severe premium-to-income burden. As a rule of thumb, premiums above 3–4% of household income begin to compress affordability and can reduce the pool of future buyers when you eventually sell.

Buyer action items

  • Get carrier quotes early. Ask at least two admitted-market carriers and one surplus-line broker for a homeowners quote that explicitly includes tornado, wildfire exposure, and earthquake shaking risk. Do this before the inspection contingency expires.
  • Add a climate contingency to the purchase agreement. Our free Tennessee-specific contract templates let you make the deal contingent on acceptable insurance premiums, flood-zone status, or seller-provided mitigation documentation.
  • Order hazard-specific inspections if the top risks warrant it. In 37405, that may mean a flood-zone determination, a wildfire/defensible-space assessment, a structural/seismic review, or a wind-mitigation inspection depending on which hazards score highest.

Frequently asked questions about 37405

Ready to underwrite 37405?

Get the full address-level report

Both tiers use verified federal data. The $19 snapshot is your pre-offer feasibility check (delivered within 5 minutes). The $99 audit adds parcel flood verification, market context, claim history, and a negotiation brief (within 24 hours).

Full Report

Tier L2

$19per address

Address-level hazard and insurance feasibility snapshot — five hazards, 30-year projections, carrier pressure signals, and a buy / negotiate / walk-away read for pre-offer buyers. PDF delivered within 5 minutes.

  • Five-hazard score breakdown: flood, wildfire, hurricane, earthquake, heat
  • 30-year federal climate projections for heat, wildfire, and sea level rise
  • Insurance premium estimate range based on state DOI filings
  • Clear buy / negotiate / walk-away recommendation with plain-language reasoning
  • Comparable lower-risk communities within 25 miles (up to 3 when available)
  • Plain-English explanations of SFHA, BFE, residual market, and other insurance terms
  • Single PDF you can share with your partner, agent, or inspector

Best for: pre-offer sanity check

Delivered: PDF by email within 5 minutes

Federal data: FEMA, USGS, NOAA, USDA, EPA

Delivered by email within 5 minutes of payment.

Most comprehensive

Pre-Purchase Audit

Tier L3

$99per property

Under-contract diligence package: parcel flood zone verification, state insurance market analysis, NOAA claim history, and an evidence-backed negotiation brief to assess earnest-money risk. PDF delivered within 24 hours.

  • Everything in the $19 Full Report
  • Parcel-level FEMA flood zone verification (Zone A/AE/VE/X — point-in-polygon)
  • State insurance market analysis: admitted carrier share, exit rate, residual market growth
  • Premium Strain Index — insurance cost as % of local median income, with 2% / 5% affordability benchmarks
  • 10-year NOAA Storm Events claim history for the ZIP code
  • Negotiation leverage brief with specific, evidence-backed seller-concession asks (typically 3–5; fewer when data is limited)
  • Total carrying cost estimate: HO-3 baseline + standalone perils + residual market fallback
  • Identifies whether the property may become hard to insure before you close
  • Gives you specific talking points for price, credits, and contingency negotiation

Best for: under-contract buyers

Delivered: PDF by email within 24 hours

Includes: 7-day no-questions-asked refund

Delivered by email within 24 hours of payment.

Nearby ZIP risk profiles in Marion

Compare climate and insurance risk across neighboring ZIP codes before you commit to a specific address in Chattanooga.

Explore 37405 in context

Indexable hub links for buyers comparing 37405 with the wider Chattanooga market and Tennessee insurance trends.

How we score 37405

Free contract templates for Tennessee buyers

Download free climate-risk contingency addendums written for Tennessee purchase agreements. Add tornado, wildfire, or earthquake contingencies to your offer.

Browse free templates