The Pest Inspection Nobody Explains to Home Buyers

Your lender just told you that you need a "termite inspection." Your agent mentioned something about a "WDO report." Your home inspector says he doesn't do that and you'll need a separate company. Nobody explained what any of this actually means, what it costs, or whether the findings should kill the deal.

I've been on the buyer's agent side of about 400 closings. Let me walk you through this the way I wish someone had walked me through it on my first purchase.

WDO Inspection vs General Pest Inspection

These are two different things and people confuse them constantly.

A WDO (Wood Destroying Organism) inspection looks specifically for termites, carpenter ants, powder post beetles, and wood-decaying fungi. That's it. The inspector checks accessible wood in the structure: sill plates, floor joists, window frames, door frames, subfloor, any exposed wood in the basement or crawl space. They're looking for live insects, damage, and conditions that invite these organisms (wood-to-soil contact, moisture problems, inadequate ventilation).

A general pest inspection is broader -- ants, roaches, rodents, spiders, whatever's around. Most lenders don't require this. It's nice to have, but it's not part of the real estate transaction unless you specifically add it.

When your lender says "termite inspection," they mean WDO.

Who Requires It and Who Pays

VA loans require a WDO inspection in every state, no exceptions. FHA loans require it in states the HUD has designated as "termite probable" (basically the entire southern half of the country plus the coasts). Conventional loans? Depends on the lender and the property. Some require it, some don't.

Who pays is negotiable. In a buyer's market, sellers often cover it as part of the closing costs. In a seller's market, buyers cover it. In most areas I've worked, the buyer pays unless the purchase agreement says otherwise. We're talking $75 to $150 as a standalone inspection. If you bundle it with your general home inspection, many inspectors or pest companies will add it for $50 extra.

Don't let $100 stop you from getting this done on any house built before 2000. The cost of missing an active termite infestation is $5,000 to $15,000 in repairs. I've seen worse.

What the Report Looks Like

Most states use a standard form (NPMA-33 is the national standard, though some states have their own version). The report is typically one or two pages and divides findings into sections:

Section 1 (or "Visible Damage and Evidence"): Active infestation or visible damage from wood destroying organisms. This is what everyone worries about. Live termites, active carpenter ant galleries, fresh beetle exit holes, damaged wood. If there's anything in Section 1, you need repair estimates before you proceed.

Section 2 (or "Conditions Conducive") : Things that aren't damage yet but could lead to problems. Wood-to-soil contact at the deck posts. Excessive moisture in the crawl space. Foam board insulation covering the foundation (termites can tunnel behind it invisibly). Missing vapor barrier. Gutters dumping water against the foundation.

Section 2 findings don't mean the house has termites. They mean the house is set up in a way that makes termites more likely. Some lenders will require Section 2 items to be corrected before closing. Others won't care.

The report will also note inaccessible areas: finished walls, areas blocked by stored items, slab foundations with no crawl space access. The inspector can only report on what they can see. If the entire basement is finished with drywall, the inspector literally cannot check the sill plate. That limitation gets noted on the report.

Findings Don't Automatically Kill the Deal

I've seen buyers panic and run from a house because the WDO report said "evidence of prior termite treatment." That's not a red flag. That's actually a good sign. It means someone found termites, treated them, and you have documentation. The house with the treatment history is safer than the house that's never been inspected.

Here's how I'd rank findings from "no big deal" to "run":

No big deal: Prior treatment with no active damage. Conditions conducive that are cheap to fix (extending downspouts, replacing a vapor barrier). Old beetle exit holes with no active frass. Minor cosmetic wood rot on exterior trim.

Negotiate repairs: Active termite infestation caught early (treatment costs $500-2,500 depending on method and region). Localized structural damage that can be sistered or repaired. Active carpenter ant colony. Get a contractor's repair estimate, get a termite treatment quote, and negotiate a credit or require completion before closing.

Walk away (or get a serious discount): Extensive structural damage that's been hidden behind new drywall. Active infestation the seller clearly knew about and didn't disclose. Seller refuses to allow the inspection at all. Major foundation damage from long-term termite activity. Multiple areas of structural compromise. At this point, you're not buying a house. You're buying a renovation project.

What the Inspection Does NOT Cover

A WDO inspection is not a mold inspection. Not a radon test. Not a general pest inspection. If you have concerns about mold (you should in any house with a crawl space or basement), you'll need a separate mold test. Radon testing is a separate $150 test with a different company. General pests like roaches, mice, ants, and spiders are not part of a WDO report.

The inspection also doesn't guarantee the house is termite-free. It guarantees that a licensed inspector looked at the accessible areas on that specific date and reported what they found. Termites could be active behind a wall the inspector couldn't access. The report's limitations section will spell this out explicitly.

Choosing the Right Inspector

Your real estate agent will probably recommend someone. That's fine as a starting point, but make sure the inspector is licensed by your state's Department of Agriculture or Structural Pest Control Board (varies by state). Ask if they carry errors and omissions insurance. A missed active infestation that costs you $10,000 in repairs six months after closing is exactly the scenario that insurance is for.

Some home inspectors are also licensed to do WDO inspections. Bundling saves you time and money. Just confirm they have the separate pest license -- a home inspector license alone doesn't qualify them to complete a WDO form in most states.

Protecting Yourself After Closing

Once you own the house, the WDO report is history. It told you the condition on inspection day and nothing more.

If the house is in a termite-prone area (and most of the US is), set up ongoing protection. A termite bond from a pest control company costs $200-400/year and includes annual inspections plus retreatment if termites show up. Think of it like homeowner's insurance for wood. It's one of the cheapest forms of protection you can buy for a property.

Worried about what your homeowner's insurance actually covers when it comes to pest damage? Our guide to insurance and pest damage breaks it down. Short version: most policies exclude termite damage entirely. That's exactly why the WDO inspection exists in the first place.