Termite Inspection Before Buying a Hill Country Home: What to Know

In Texas, the formal document produced after a termite inspection is called a Wood Destroying Insect (WDI) report, sometimes referred to as a termite letter. It is completed by a licensed pest management professional and covers four categories of wood-destroying organisms: subterranean termites, drywood termites, wood-destroying beetles, and wood decay fungi. Many mortgage lenders — particularly those underwriting VA and FHA loans — require a clean WDI report before funding.

The WDI report documents what is visible and accessible on the date of inspection. It is not a structural engineering assessment and does not guarantee that no infestation exists in areas the inspector could not physically access, such as inside walls, under flooring, or beneath concrete slabs. Buyers who want more complete information can request that a separate invasive inspection be performed, which may involve drilling or probing.

Formosan and native subterranean termites are the primary species of concern throughout the Edwards Plateau and Highland Lakes region. Both species require contact with soil or a consistent moisture source to sustain their colonies, and the fractured limestone beneath Hill Country properties creates pathways for termite tubes that are difficult to detect from the surface. Older homes with pier-and-beam foundations are particularly vulnerable because wood members are often in close proximity to or direct contact with soil.

Cedar and juniper — the dominant native trees of the Hill Country — are not immune to termite damage despite being naturally aromatic. Fallen logs, stumps within 20 feet of a structure, and wood mulch against a foundation are common sources of colony establishment. Properties on wooded lots with heavy cedar canopy carry higher baseline risk than those on cleared or rocky terrain.

A standard WDI inspection covers all accessible areas of the structure: exterior siding and trim to the degree accessible, garage framing, attic if access is provided, crawl spaces to the extent safe entry is possible, and visible interior structural members. The inspector will probe suspect wood with a tool to detect hollow areas and use a flashlight to look for termite mud tubes along foundation walls, piers, and plumbing runs.

Areas that are routinely inaccessible include spaces behind finished drywall, insulated attic floors where cellulose has been blown over framing, under permanent flooring, and under concrete slab additions such as garage floors or room additions. If a seller has recently painted over structural wood — a concern in some flipped properties — visual evidence of prior damage may be obscured. Buyers in this situation may want to request an invasive inspection or negotiate a warranty holdback.

A WDI report distinguishes between active infestation (live insects observed) and evidence of previous infestation (damage or tubes without live activity). Both findings require attention. Previous damage indicates the structure has been a target, and without knowing when treatment occurred or whether it was effective, you cannot assume the colony was eliminated. A reputable seller should be able to produce documentation of prior treatment, the method used, and whether an active warranty is in place.

Reports may also note conditions conducive to infestation without documenting actual evidence of insects. These notations — typically for excessive moisture, wood-to-soil contact, or cellulose debris under the structure — are not findings of termites but are important for buyers because they represent conditions that make future infestation more likely. Correcting these conditions before closing or negotiating a credit to do so is generally worthwhile.

If the WDI report is clean, the primary action is to have a pest management professional establish a preventive treatment before you move in — particularly for properties with soil-touching wood or pier-and-beam construction. Liquid barrier treatments or termite bait station systems installed around the perimeter provide ongoing protection and can often be transferred to a new owner when a property changes hands.

If the report shows active or previous activity, the buyer has several options: request that the seller treat and warrant the property prior to closing, negotiate a price reduction to cover treatment and repair costs, or withdraw from the transaction. In competitive markets, sellers may push back, but buyers should be aware that untreated termite damage in wall framing and floor joists can be far more expensive to remediate than the cost of treatment itself.