Can pest infestations affect home resale value?

Ask ten people whether pests hurt a home's resale value and most will say yes without being able to say exactly how. There are, in fact, two specific and different mechanisms, and they behave very differently depending on which pest is involved.

The first is structural and procedural: wood-destroying-insect activity — subterranean termites, carpenter ants, powderpost beetles — is a standard checkpoint in a home sale. Many mortgage lenders require a dedicated wood-destroying-insect inspection before closing, and a confirmed finding becomes a concrete negotiation item — treat-before-close, price adjustment, or a seller credit for repair. This channel is well documented because it's baked into how real-estate transactions and financing already work.

The second is psychological and market-based: stigma. The peer-reviewed literature on stigmatized properties finds a general consensus that disclosed stigmas — a documented pest history among them — reduce a property's sale potential and lengthen time-on-market, even where no physical damage remains. This is real, but it's a softer, harder-to-quantify effect than an inspection line item, and it applies differently to a termite history than to, say, a resolved ant problem nobody would ever ask about.

New Hampshire places a statutory duty on sellers and their agents to disclose known material physical conditions under RSA 331-A:25-b — but that duty is triggered by actual knowledge, not an obligation to go investigate. In practice, that means a seller who knows about an active infestation cannot conceal it, but there's no requirement to hire an inspector proactively before every showing. New Hampshire also has no bed-bug-specific disclosure statute, which is a meaningful distinction: a documented termite history intersects with lender-required inspections and general material-defect disclosure, while a past bed-bug problem is governed by the same general disclosure duty but carries no structural inspection requirement behind it at all — one more reason that story is almost entirely about buyer perception rather than a legal or structural fact.

It's worth stating plainly, because it comes up constantly in this context: standard homeowners insurance does not cover pest damage, and that matters for a resale conversation specifically. The widely used ISO HO-3 policy form excludes damage caused by birds, vermin, rodents, or insects as preventable maintenance rather than a sudden, accidental loss. A buyer who discovers pre-existing pest damage after closing cannot expect an insurance claim to pay for it, and a seller shouldn't imply otherwise during a sale. The entire resale-value conversation, in other words, plays out without an insurance safety net on either side — which is exactly why a documented wood-destroying-insect inspection, not a policy, is the real protective step.

It's worth being precise here, because lumping every pest into one resale-value story is itself a version of the overstatement this page corrects. Termites and carpenter ants can genuinely damage the structure a buyer is purchasing, which is why their resale-value story is grounded in inspections, lender requirements, and repair negotiations — a documented channel. Bed bugs, by contrast, cause no structural or material damage to a house at all; any resale effect they have is entirely about stigma and buyer aversion, not a damaged asset. That distinction matters enough that it gets its own dedicated page in this hub, because collapsing 'pests hurt resale value' into a single blanket claim erases exactly the honest difference a homeowner needs to know.