Below Grade
Your basement air has a body count. We map the risk, price the fix, and kill the shrug.
Channel: Below Grade
Tagline: Your basement air has a body count. We map the risk, price the fix, and kill the shrug.
Niche: Consumer-facing residential radon intelligence — an automated, opinionated site that turns EPA radon zones, geology, housing-age data, smoking prevalence, and mitigation economics into county scorecards, buyer guides, negotiation playbooks, and brutally useful explainers about the invisible gas sitting under millions of homes.
Target audience: Homebuyers, homeowners, parents, landlords, home inspectors, public-health reporters, and anyone who has ever heard “it’s probably fine” from a seller standing over a basement crack.
Why now: Radon is still wildly under-discussed relative to its harm. EPA says it is the leading cause of lung cancer among never-smokers; NCI cites 15,000 to 22,000 U.S. lung-cancer deaths per year related to radon. EPA refreshed its radon hub in March 2026 and continues pushing the National Radon Action Plan, yet most people still encounter radon only as a scary line item during a house sale. Housing affordability is pushing buyers into older homes with basements, remote work means more people spend longer hours indoors, and the web is full of contractor SEO sludge instead of trustworthy location-based intelligence.
Content Example:
The Basement Discount Is a Lie: Why High-Radon Counties Keep Selling Homes Like the Air Is Free
The American housing market is full of fake bargains. One of the most common wears fresh paint, has a finished basement, and comes with an invisible gas problem no one wants to price honestly.
Radon is not black mold for hypochondriacs. It is a radioactive gas released by the decay of uranium, thorium, and radium in rock and soil. You cannot smell it. You cannot see it. You do not get a headache and heroically solve the mystery in 20 minutes. You just breathe it for years. Then, if the exposure is high enough and the timing is cruel enough, the cells lining your lungs pay the bill.
Here is the part the market keeps handling badly: radon risk is not random. It clusters where geology cooperates, where housing stock is older, where basements and slab cracks are common, and where people keep homes shut tight through cold months. Add smoking prevalence to the picture and the risk stack gets nastier fast. A county rated EPA Zone 1 is not a guarantee that any one house is dangerous, but it is absolutely enough to stop pretending the issue is rare.
The industry’s favorite dodge is “just test after closing.” That is lazy advice masquerading as calm. Testing after closing is like buying a used car and saying you’ll check whether the brakes work next month. The grown-up move is simpler: test, negotiate, and if the level is 4 pCi/L or higher, fix it. If it lands between 2 and 4 pCi/L, the air is still not giving you a clean victory lap. It is giving you a decision.
Mitigation is not exotic. In many homes it is a fan, a vent pipe, and competent sealing — cheaper than a surprise roof job, less dramatic than a kitchen remodel, and more directly connected to whether the people inside the house keep breathing safely. The point of Below Grade is not to terrify people into panic. It is to make the invisible legible, local, and financially concrete: where risk is stacked, what a fix likely costs, when a buyer should push for credits, and which counties keep acting shocked by a problem the geology has been advertising for decades.
Data Sources:
- EPA Map of Radon Zones — county-level Zone 1/2/3 radon potential spreadsheet and map; the core national risk layer.
- EPA Radon guidance — action levels, testing guidance, National Radon Action Plan resources, and mitigation basics.
- NCI Radon Fact Sheet — cancer burden, mechanism, and risk framing.
- CDC Radon resources — prevention/testing guidance and public-health framing.
- CDC PLACES — county/ZCTA smoking prevalence to model stacked radon-plus-smoking risk.
- U.S. Census ACS 5-Year API — housing age, building type, renter/owner mix, income, and housing-stock characteristics.
- USGS State Geologic Map Compilation — geology context for radon-prone formations.
- State radon program pages / grant resources — local testing and mitigation contacts, state-specific datasets where available.
Automation Pipeline:
- Schedule: Weekly full rebuild; monthly deep-data refresh for ACS / EPA layers; seasonal winter-focused briefs.
- Collect: Pull EPA radon zone tables, ACS housing variables, CDC PLACES smoking indicators, USGS geology layers, and state radon program references.
- Process: AI scores counties and metros for likely household exposure pressure using zone class + geology + old-housing share + smoking prevalence + affordability context.
- Generate: County scorecards, metro comparisons, negotiation checklists, basement cutaway diagrams, mitigation cost cards, and “should I panic?” explainers.
- Publish: Static TypeScript site rebuilds via GitHub Actions, pushes to GitHub Pages or Cloudflare Pages, and auto-posts new county features / weekly roundups.
Tech Stack:
- Static site: TypeScript + Next.js or Astro
- Image generation: Programmatic SVG/Canvas graphics for maps, risk ladders, decision trees, and basement diagrams; optional AI illustration for editorial headers
- Data collection: Python/Node ETL for EPA spreadsheets, Census API, CDC PLACES, and geospatial joins
- CI/CD: GitHub Actions
- Hosting: Cloudflare Pages or GitHub Pages
Monetization Model:
- Channel 1: affiliate revenue — radon test kits, continuous radon monitors, healthy-home gear
- Channel 2: local lead generation — certified mitigation pros and measurement providers
- Channel 3: sponsorships — home inspection tools, IAQ brands, real-estate services, healthy-home products
- Channel 4: premium reports — downloadable county / metro buyer guides and realtor-safe negotiation packets
- Projected month-1 revenue: $300-$900
- Projected month-6 revenue: $4,000-$9,000 with programmatic SEO compounding and contractor demand in high-risk states
Launch Complexity: 4/5 — geospatial joins and locality pages take real work, but the datasets are stable and manageable after setup.
Content Quality Score: 5/5 — highly useful, fear-calming but unsparing, directly tied to expensive life decisions.
Automation Score: 5/5 — core data changes slowly, making this an excellent auto-publishing system.
Revenue Potential: 4/5 — not mass-market entertainment, but extremely high intent when users arrive.
Total: 18/20
Why This Will Work: The magic here is that radon sits at the intersection of health fear, home finance, and local SEO. People do not search radon casually. They search when they are buying a house, protecting a kid, or staring at a test result they do not understand. That is commercial intent with public-service value. The site’s voice should be a blunt, slightly irritated home inspector who hates magical thinking and loves receipts. Visually, it should feel like a beautiful building-science dossier: caution yellow, basement blue, clean maps, and no wellness fluff. The recurring bit is simple: “The basement doesn’t care about vibes.” That line can become a brand.
Risk & Mitigation:
- Risk: EPA zone maps are coarse and cannot predict any single home.
Mitigation: Be explicit on every page: local risk ≠ house diagnosis; testing is the only way to know. - Risk: State-level data quality is inconsistent.
Mitigation: Build national pages from EPA/Census/CDC/USGS first; layer richer state datasets only where solid. - Risk: The niche can drift into contractor-spam territory.
Mitigation: Make every page data-first, visual, and evidence-heavy; no fake urgency, no cheesy copy. - Risk: Revenue ceiling lower than broader home-improvement categories.
Mitigation: Expand later into a wider “healthy home risk” network once Below Grade establishes trust.