Termite risk scores aggregate known vulnerability factors—wood-to-soil contact, moisture history, slab-on-grade construction, regional subterranean termite density, prior treatment age, and landscape grading—into a single numerical or categorical output. The Termite Risk Score tool on TermiteHQ uses these inputs to place your property into a low, moderate, high, or severe risk band, following models adapted from university extension research and NPMA regional data. A high score means your property shares characteristics with homes that experience earlier or more frequent infestations, not that termites are present today.
You can safely use the score to compare inspection intervals—annual for high-risk properties in the Southeast, biennial for moderate-risk homes in temperate zones with no prior activity—and to justify inspection costs during real-estate transactions or after landscape changes. You cannot use it to skip inspection, clear a property for sale, satisfy lender requirements, or rule out active infestation. Termites colonize based on local food availability, moisture events, and structural access points that no algorithm can observe remotely.
David Gray, who contributed to TermiteHQ’s Expert Team review process, notes that risk scores often surprise homeowners in low-density regions who assume concrete-slab construction offers full protection: “A slab with plumbing penetrations and exterior mulch beds can score higher than a pier-and-beam house with visible crawlspace access, because the slab hides early warning signs and concentrates moisture.” The score reflects detection difficulty and damage speed, not just colony presence.
The section below walks through score interpretation, the boundaries between self-assessment and professional inspection, and how to route score results into an appropriate inspection schedule without over-relying on automated estimates.
What Changes the Risk Score—and What Doesn’t
A termite risk score pulls from property characteristics, climate data, and regional infestation patterns. The number changes based on variables you can observe and some you can’t see without opening walls or crawling under the structure. Understanding which inputs matter helps you interpret the result and decide when to move from estimation to professional inspection.
Foundation type is the first structural variable. Slab-on-grade homes limit subterranean termite access points but make detection harder because there’s no crawl space to inspect. Pier-and-beam or basement foundations offer more entry routes—especially where wood touches soil—but also provide visible monitoring zones. Homes with attached wood decks, landscape timbers, or firewood stacked against siding add secondary risk points that most scoring tools flag.
Moisture exposure drives activity for all termite species. Leaking gutters, poor grading that pools water near the foundation, plumbing leaks, and HVAC condensation create the humidity subterranean termites need to forage above ground. Drywood termites tolerate lower moisture but still favor attics and eaves where wood stays untreated and ventilation is inconsistent. A risk score may incorporate local rainfall averages, but it won’t know about the bathroom leak that’s been dripping into your crawl space for six months.
Species distribution matters regionally. Subterranean termites—primarily Reticulitermes species—are present across most of the continental U.S., with Formosan and Asian subterranean termites concentrated in the Southeast and Gulf Coast. Drywood termites (Incisitermes and Cryptotermes) dominate coastal California, Florida, and parts of the Southwest. Dampwood termites stay in the Pacific Northwest and require consistently wet wood. A national risk tool should weight species by ZIP code, but localized pressure—such as a neighborhood with aging untreated homes—won’t appear in the algorithm.
Treatment history and warranty status change real risk but rarely appear in automated scoring. A home treated within the last five years under a renewable termiticide barrier or baiting-system contract carries lower immediate risk than an untreated structure, assuming the service was completed correctly and monitoring continues. If you’re using a risk score during a property transaction, ask the seller for treatment records and warranty transfer terms before weighing the number heavily.
Evidence age is the variable a score can’t measure. A high-risk rating based on climate and construction type means little if a licensed inspector found no live termites, no mud tubes, and no fresh frass during a recent examination. Conversely, a moderate score doesn’t override visible signs of active infestation—swarmer wings on windowsills, hollow-sounding baseboards, or soil-colored shelter tubes on foundation walls. The score estimates likelihood; physical evidence confirms presence.
Local regulatory context and disclosure requirements also shift decisions. Some states mandate termite inspections before closing on residential sales; others leave it optional. A risk score may help you decide whether to request an inspection as a buyer, but it doesn’t replace the legal and financial protection that a licensed report provides during escrow.
What You Can Do Before Calling a Professional
A termite risk score gives you a starting point, but it cannot see your property. Before you schedule an inspection, you can gather information that helps you ask better questions and understand what the inspector finds. This preparation does not replace professional assessment—it makes the conversation more useful.
Start by documenting visible conditions around your home. Walk the perimeter and photograph any wood-to-soil contact, mulch piled against siding, water stains on foundation walls, or areas where paint bubbles near the ground. Look inside crawl spaces and basements for mud tubes on foundation walls, sagging floor joists, or wood that sounds hollow when tapped. Take photos with your phone so you can show the inspector exactly what you noticed. Do not disturb mud tubes or probe wood aggressively—you may destroy evidence the inspector needs to identify the species and extent of activity.
Collect any termite-related records you have. If the home had a previous treatment, find the contract, warranty paperwork, and treatment diagram. If you bought the home within the past few years, locate the pre-sale inspection report. If you have a monitoring system, note the last service date and whether the company left a diagram showing station locations. These records tell the inspector what has already been done and whether warranties are still active.
Prepare a short list of questions based on what the risk score flagged. If the tool highlighted subterranean termite pressure because you live in the Southeast with clay soil and wood siding, ask the inspector whether a soil treatment or monitoring system makes more sense for your foundation type. If the score noted moisture problems, ask whether the inspector can identify the water source and whether fixing it should happen before or alongside treatment. If you have an older home with a crawl space, ask whether the inspector will check for both termites and conditions that attract them.
Understand what you cannot determine on your own. You cannot identify termite species reliably without magnification and training—what looks like carpenter ant damage may be drywood termites, and what looks like old water damage may be active subterranean termite feeding. You cannot assess whether an infestation is localized or widespread without opening walls or probing hidden wood. You cannot judge whether a treatment from five years ago is still protecting the home without knowing the product used, the application method, and whether the soil was disturbed during landscaping.
The Termite Risk Score helps you understand why your property might be vulnerable, but only a licensed inspector can confirm whether termites are present, identify the species, map the extent of damage, and recommend treatment. Use the score to prepare, not to diagnose. If you see signs of infestation—mud tubes, swarming insects, or damaged wood—schedule an inspection immediately rather than waiting to gather more information.
When Professional Judgment Changes the Risk Picture
A termite risk score uses structural variables, moisture patterns, and regional pressure to estimate likelihood. It does not measure current infestation, hidden damage, or site-specific conditions that licensed inspectors identify during physical examination. The tool flags properties that warrant closer attention—it does not replace the crawl space visit, moisture meter readings, or probing that reveal active colonies.
David Gray, a North Carolina-based inspector with two decades of subterranean termite work, points to three moments where professional judgment overrides score output. First, a property may score moderate risk but show visible mud tubes on foundation piers during the walk-around. That single observation moves the timeline from “schedule an inspection this season” to “book within two weeks.” Second, a high-risk score in a desert climate may reflect irrigation patterns near the slab, but an inspector determines whether moisture reaches wood framing or remains isolated in landscaping. Third, older homes with crawl space vapor barriers sometimes score lower than warranted because the tool cannot see through polyethylene to the soil-contact wood underneath.
Licensed inspectors also interpret treatment history. A home treated five years ago under a transferable warranty carries different urgency than an untreated structure with the same score. The inspection process includes reviewing service records, checking reapplication schedules, and verifying that the original treatment zone remains intact after landscaping or grading changes. Risk scores do not parse warranty language or measure whether a previous liquid treatment still provides a continuous barrier.
In real-estate transactions, buyers sometimes use risk scores to negotiate inspection timing or request seller-paid treatments. That approach works only when the score aligns with local disclosure law and contract timelines. Most state regulations require a licensed inspection report before closing, regardless of algorithmic output. The score helps prioritize which properties need early scheduling, but it does not satisfy lender, title, or state agriculture department requirements for documented findings.
Professionals also adjust for species behavior that general risk models cannot capture. Formosan termites in Gulf Coast states swarm at different times and build aerial colonies in walls, while drywood termites in California leave pellet piles with no ground contact. A score built on subterranean pressure may underweight those patterns. Inspectors trained in regional species identification catch what broad models miss, particularly in mixed-infestation zones where more than one termite type is active.
Use the Termite Risk Score to decide whether to schedule an inspection this month or next year. Let the licensed professional decide whether the property needs treatment, monitoring, or moisture correction. The tool organizes variables; the inspector measures the wood.
