If you own a home in San Diego, termites aren't a matter of "if" — they're a matter of "when." The USDA places our region in the highest risk zone for termite activity, and virtually every home in San Diego County will encounter termites at some point.
Two Types of Termites in San Diego
Drywood Termites: The most common type in San Diego. They live inside the wood they eat — no soil contact needed. Signs include small piles of pellet-like droppings (frass) near windowsills or baseboards, and hollow-sounding wood when tapped.
Subterranean Termites: These live in the soil and build mud tubes to reach wood. More destructive than drywood termites because entire colonies attack simultaneously. Look for mud tubes on your foundation walls.
Treatment Options and Costs
Localized Treatment: $500–$2,000. Targets specific infested areas with chemicals, heat, or microwave technology. Best for small, contained infestations. Less disruptive than fumigation — no need to leave your home.
Full Fumigation (Tenting): $1,500–$4,000 for a typical San Diego home. The entire house is sealed and filled with gas that kills all drywood termites. You'll need to vacate for 2–3 days. The most comprehensive solution for widespread infestations.
Ongoing Prevention: $100–$300 per year for annual inspections and preventive treatments. Most pest control companies offer maintenance plans that include termite monitoring.
When to Get an Inspection
You should get a termite inspection every 1–2 years, when buying or selling a home (required in most San Diego real estate transactions), after finding frass or mud tubes, or if you notice hollow-sounding wood or see swarming winged termites (usually in fall).
Find a licensed pest control company near you for a free or low-cost termite inspection.