Why Termite Inspections Are Critical in Arizona

Arizona has one of the highest termite pressures of any state in the U.S. Subterranean termites — primarily Heterotermes aureus and Reticulitermes tibialis — are active year-round in Pinal County due to the warm climate. Drywood termites (Incisitermes minor) are also common, particularly in older homes with exposed wood. The USDA estimates termites cause over $5 billion in property damage annually nationwide, and Arizona homeowners bear a disproportionate share of that cost.

Annual termite inspections are not just good practice — they are often required by mortgage lenders and are standard in real estate transactions. A Wood Destroying Organism (WDO) report is typically required for any home sale in Arizona.

Termite Inspection Costs in Arizona: 2026 Pricing

Termite inspection costs vary based on the type of inspection, home size, and whether a formal report is required:

• Standard visual inspection (no report): $0–$75. Many pest control companies offer free inspections as a lead-generation service. These are thorough but do not produce a formal WDO report.
• Wood Destroying Organism (WDO) Report: $75–$150. Required for real estate transactions. Must be performed by a licensed pest control operator. The report documents all evidence of termite activity, damage, and conducive conditions.
• Thermal imaging inspection: $150–$300. Uses infrared cameras to detect moisture and heat differentials that indicate termite activity inside walls without invasive probing. Highly recommended for older homes or homes with previous termite history.
• Termite dog inspection: $200–$400. Trained detection dogs can locate active termite infestations with 95%+ accuracy, including inside walls and under slabs. Most accurate method available.

What a Termite Inspector Looks For

A thorough termite inspection covers:

• Mud tubes: Subterranean termites build pencil-width mud tubes along foundations, stem walls, and piers to travel between soil and wood while maintaining humidity
• Wood damage: Probing wood members with a screwdriver or pick to detect hollowing, galleries, and frass
• Swarm evidence: Discarded wings near windows, doors, and light fixtures indicate a recent termite swarm
• Frass (drywood termite droppings): Small, hexagonal pellets that accumulate below infested wood — a distinctive sign of drywood termites
• Conducive conditions: Wood-to-soil contact, moisture intrusion, improper grading, and wood debris near the foundation that increase termite risk
• Attic and crawl space: Inspecting roof framing, rafters, and any accessible structural wood

Termite Treatment Costs After Inspection

If termites are found, treatment costs depend on the species and extent of infestation:

• Subterranean termite liquid treatment (Termidor): $800–$2,500 for average home. Termidor (fipronil) is applied as a continuous trench around the foundation. Provides 10+ years of protection.
• Subterranean termite bait system (Sentricon): $1,200–$2,000 installation + $300–$500/year monitoring. Stations installed around the perimeter intercept foraging termites and deliver a slow-acting bait to the colony.
• Drywood termite spot treatment: $200–$600 per treatment area. Localized injection of foam or dust insecticide into infested wood.
• Drywood termite fumigation (tenting): $1,500–$4,000 for average home. The most thorough treatment for widespread drywood infestations. Requires vacating the home for 3 days.

How Often Should You Get a Termite Inspection in Arizona?

Given Arizona's termite pressure, the recommended inspection frequency is:

• Annual inspection: For all Arizona homes, regardless of treatment history
• Every 6 months: For homes with previous termite activity, wood-frame construction, or homes in high-activity areas (near desert washes, older neighborhoods)
• Before purchasing a home: Always require a WDO report as part of the inspection contingency
• After monsoon season: Subterranean termite swarms peak in July–September following monsoon rains. Inspect in October to catch any new activity.

Red Flags That Mean You Need an Inspection Now

• Mud tubes on the foundation, walls, or in the garage
• Swarming insects (winged termites) inside the home, especially near windows
• Hollow-sounding wood when tapped
• Doors or windows that suddenly stick (wood swelling from termite moisture)
• Small piles of sawdust-like frass near baseboards or window sills
• Bubbling or uneven paint on walls (moisture from termite activity)