How Much Does a Termite Inspection Cost in San Diego?

Last updated: June 3, 2026

By Pest Control Pricing Team

A termite inspection in San Diego costs $75 to $200 for a standard visual inspection, or $125 to $300 for a formal Wood Destroying Organism (WDO) report required for most real estate transactions. San Diego sits inside a rare zone where both Western drywood termites (Incisitermes minor) and Western subterranean termites (Reticulitermes hesperus) are simultaneously active, which means inspections take longer and require deeper attic, crawl, and exterior wood access than markets with a single-species threat. Pricing scales with home size, accessibility, age, and whether the inspector is filing a Section 1 / Section 2 report with the California Structural Pest Control Board. For a deeper look at how San Diego pricing compares with the rest of the country, see the national termite inspection cost guide.

What a San Diego termite inspection actually covers

A San Diego termite inspection is a full-property structural evaluation, not a quick walk-through. A licensed inspector spends roughly 45 to 90 minutes on a typical single-family home checking every accessible wood surface, plumbing penetration, and moisture source for evidence of active or prior termite activity. The visual scope is wider than most homeowners expect because drywood termites can enter the home through any exposed wood, including eaves, fascia boards, window trim, and attic rafters, while subterranean termites build mud tubes from soil into framing through foundation cracks and plumbing penetrations.

The inspector starts with the perimeter, walking the foundation line and checking for mud tubes, swarmer wings around exterior light fixtures, and conducive conditions like wood-to-soil contact, planter boxes touching stucco, and irrigation drip lines that keep wood substrates damp. Stucco construction, which dominates San Diego housing stock from the 1950s onward, creates a particular challenge because subterranean termites can travel up the back of stucco hidden from view. Inspectors look for stucco cracks, hollow-sounding stucco at the base of walls, and any termite damage emerging at electrical outlets or baseboards on exterior-facing walls.

Inside the home, the inspector probes baseboards, window sills, door jambs, and any wood trim with a moisture meter and a fine pick or screwdriver. Drywood termite damage typically shows as small kick-out holes (about 1/16 inch in diameter) with piles of pellet-shaped frass beneath them, while subterranean termite damage tends to run with the grain and contain soil. The attic inspection is the longest portion in San Diego: drywood termites colonize rafters, ridge beams, and the underside of roof sheathing, often without producing any external evidence until the colony has been active for three to eight years. The inspector traces every rafter, every truss connection, and the perimeter of the attic for galleries, frass piles, and discarded wings.

Crawl spaces, where present, get the same treatment for subterranean activity. Inspectors check sill plates, sub-flooring, support posts, and the foundation perimeter for mud tubes. Slab-on-grade homes, which represent a majority of post-1970 San Diego construction, restrict crawl access but introduce different scrutiny around bath traps, plumbing penetrations, and expansion joints where subterranean colonies enter.

What does a termite inspection cost in San Diego?

San Diego termite inspection pricing falls into three distinct tiers that reflect the depth of work and the document the homeowner ends up with.

The price gap between a homeowner visual check and a WDO report is driven by paperwork and liability, not by the physical work performed. WDO reports are filed with the California Structural Pest Control Board and remain accessible to future buyers and agents for two years, which means the inspector carries documented professional liability for what the report does or does not flag. The report itself includes a property diagram, a written description of every finding, and Section 1 (active infestation or visible damage from termites) versus Section 2 (conditions likely to lead to infestation) categorization that drives escrow negotiations.

No-cost inspections offered by treatment companies are real inspections, but they end in a treatment quote, not a state-filed document. They serve a narrow purpose: confirming whether you need treatment when you already suspect activity. They do not satisfy lender or escrow requirements for a home sale, and an inspector who profits from selling treatment has a structural conflict of interest a paid third-party inspector does not. Homeowners benefit from understanding that distinction before choosing a path.

Drywood and subterranean termites in San Diego

San Diego is one of relatively few U.S. metros where two structurally significant termite species are simultaneously active, and the inspection has to address both. The species behave differently, enter the home through different routes, and require completely different treatment approaches when found.

Western drywood termite (Incisitermes minor)

Drywood termites live entirely above ground inside the wood they consume. They do not need contact with soil or with a moisture source, which means they can colonize attic rafters, second-floor framing, hardwood floors, eaves, and exterior trim independently of any ground connection. A mature colony contains 1,000 to 5,000 individuals and may have been active for five to ten years before a homeowner notices the first sign. Drywood swarming season in San Diego runs September through November, peaking in late October with mass flights of reproductives on warm afternoons after the first cool fronts.

The classic San Diego drywood signal is a small pile of hexagonal frass pellets on a window sill, in a bathroom corner, or under an attic vent. The pellets are about the size of poppy seeds and the color of the wood the colony is eating. Inspectors look specifically for these piles, for kick-out holes in trim and rafters, and for discarded wings after a swarm. Treatment for confirmed drywood infestations in San Diego frequently involves fumigation with Vikane (sulfuryl fluoride), which is covered separately on the San Diego termite treatment cost page.

Western subterranean termite (Reticulitermes hesperus)

Western subterranean termites live in soil and travel up into structures through mud tubes built along foundation walls, plumbing penetrations, and concrete cracks. Subterranean colonies can contain 60,000 to several hundred thousand individuals and cause damage faster than drywood colonies because the active foraging force is larger. They prefer damp wood, which is why irrigated landscaping, leaky hose bibs, and plumbing condensation under bath traps are recurring San Diego entry points.

Subterranean swarming in San Diego runs February through April after the first warm rains. The signature evidence is a cluster of equal-length wings near a baseboard, window track, or sliding door, plus pencil-thick mud tubes along the foundation or stem wall. Inspectors examine every accessible foundation surface, every plumbing penetration, and every utility chase for tubes and for damage running with the grain of the wood. Treatment relies on liquid soil termiticide (such as Termidor SC, containing fipronil) or bait-station systems (such as Sentricon, containing noviflumuron), which target the colony rather than the visible wood.

WDO reports and San Diego real estate transactions

Almost every San Diego home sale involves a Wood Destroying Organism inspection, even though California law does not technically require one. Lenders typically require it for VA and FHA loans, and the standard California Association of Realtors purchase contract triggers a WDO inspection during escrow unless both parties expressly waive it. The report becomes a negotiation document, and the Section 1 / Section 2 split on the report drives who pays for what.

Section 1 items are active infestations or visible damage caused by termites, fungi, or other wood-destroying organisms. These almost always become seller obligations under standard San Diego escrow practice, because the property cannot close as represented while an active infestation persists. Section 1 corrections might include localized drywood treatment, full-structure fumigation, subterranean soil treatment, replacement of damaged framing, or repair of fungus-rotted siding.

Section 2 items are conditions that could lead to infestation but have not yet caused damage. Examples include earth-to-wood contact, excessive cellulose debris in a crawl space, leaking plumbing that wets framing, and stucco cracks above grade. Section 2 corrections are negotiable; buyers and sellers split them, ignore them, or use them to adjust price. A San Diego home with a long Section 2 list is often a 1940s through 1970s structure with deferred maintenance, and buyers should expect to budget for the corrections regardless of who signs the check at closing.

The WDO report itself is filed electronically with the California Structural Pest Control Board and stays in the public record. Subsequent inspections at the same property are visible to any future inspector running the address. That public record is one reason San Diego sellers occasionally order their own pre-listing WDO report: it lets them address Section 1 items at their chosen contractor's pace and price rather than at the buyer's deadline.

Which San Diego neighborhoods carry the highest termite risk?

Termite pressure across San Diego County varies primarily with housing age, irrigation density, and proximity to canyons or natural vegetation that supports established subterranean colonies. The neighborhoods below are not the only places where termite activity occurs, but they are areas where pest control records and WDO report data show consistently elevated finding rates.

Older central neighborhoods

North Park, South Park, University Heights, Hillcrest, Mission Hills, and Kensington contain a high density of Craftsman, Spanish Revival, and California Bungalow homes built between 1910 and 1940. The exposed-rafter eaves, redwood and Douglas fir framing, and original single-pane wood-frame windows characteristic of these neighborhoods are prime drywood termite habitat. Inspectors operating in these neighborhoods almost always recommend an attic inspection because drywood activity in century-old rafter systems is more common than not. WDO reports in these zip codes routinely run two to four Section 1 items even on well-maintained homes.

Coastal communities

La Jolla, Pacific Beach, Mission Beach, Ocean Beach, and Point Loma carry a particular combination of marine humidity, older housing stock, and dense landscape irrigation that elevates both drywood and subterranean pressure. Coastal homes also face accelerated wood weathering and stucco cracking, which increases Section 2 findings. The 92107, 92109, and 92037 zip codes show some of the highest WDO finding rates in San Diego County.

Canyon-adjacent properties

Homes that back onto canyons (common throughout Mission Valley, Tierrasanta, Clairemont, and parts of Rancho Penasquitos) sit near established native subterranean termite colonies in the canyon's chaparral and coast live oak. Subterranean activity in these zones tends to enter through irrigation-saturated soil at the back of the property. Inspectors recommend continuous foundation perimeter checks every year or two for homes within 150 feet of a canyon edge.

Older East and South County tracts

Tract homes built between 1955 and 1975 in El Cajon, La Mesa, Lemon Grove, National City, and Chula Vista represent the slab-on-grade era of San Diego construction. Slab homes restrict crawl access but introduce subterranean entry through bath traps, plumbing penetrations, and slab expansion joints. WDO reports on these homes typically focus on bath trap inspection, garage-to-house framing transitions, and water heater closets.

How San Diego inspection costs compare to other California metros

San Diego termite inspection pricing sits in the mid-range of California metros. It is slightly lower than the Bay Area, broadly comparable to Los Angeles termite inspection pricing, and slightly higher than inland Central Valley metros that face primarily subterranean activity. The price difference traces to two factors: the dual-species inspection requires more thorough attic work, and California's WDO licensing structure standardizes pricing across coastal markets where drywood activity is endemic.

Inland California cities like Sacramento sometimes show lower inspection pricing because the dominant termite species in those markets is Western subterranean alone, which means a shorter attic inspection and a different evidence pattern. Coastal Southern California cities tend to cluster within $25 of one another for the same inspection type. For broader pest service pricing across the city, the San Diego pest control cost guide covers ant, rodent, and general pest service tiers.

What happens after the inspection?

The deliverable depends on the inspection type. For a standard visual inspection, the homeowner receives a written summary that lists any findings, photographs of evidence, and recommendations. For a WDO report, the document is filed with the California Structural Pest Control Board, sent to the homeowner, and (in real estate transactions) sent to the listing and buyer's agents.

If the inspector finds active infestation, the report identifies the species, the locations of evidence, and recommended treatment options. Drywood findings concentrated in a single area (one rafter section, one window frame) often qualify for localized treatment using borate wood treatment, orange oil, or spot fumigation. Drywood findings spread across multiple attic or framing locations typically require whole-structure fumigation with Vikane. Subterranean findings drive either a liquid termiticide soil treatment around the foundation perimeter (Termidor SC is the most common active ingredient in San Diego) or a bait station system (Sentricon Always Active, monitored over multiple years).

Section 1 corrections for drywood almost always require completion before close of escrow in real estate transactions. The seller's pest control contractor performs the work, issues a Notice of Work Completed and Not Completed (the standard SPCB document), and the buyer's lender clears the funding contingency. The interval between inspection, treatment, and re-inspection averages 10 to 21 days in standard San Diego escrows; fumigation requires a 3-day vacancy plus a re-occupancy clearance, so calendars compress quickly.

How to find a qualified termite inspector in San Diego

Every termite inspector operating in California must hold a Structural Pest Control Board Branch 3 license (Wood Destroying Organisms and Organisms). The license number appears on every WDO report and is verifiable at the California Structural Pest Control Board website. Homeowners can search by company name or license number, view the company's complaint history, and confirm the inspector individually holds a valid license.

Beyond licensing, three additional checks matter for San Diego specifically. First, ask whether the inspector or the company has a relationship with the contractor that would perform any recommended treatment. An inspector who is also the treatment provider has an incentive to find more work; an independent inspector who refers treatment out has fewer. Second, ask for sample WDO reports the company has filed recently. A clear, photo-supported, location-specific report distinguishes a thorough inspector from one issuing pro-forma documents. Third, confirm the company carries workers' compensation insurance and general liability coverage with documented limits. The compliant phrasing here is to ask for current certificates of insurance, not to accept a verbal assurance.

Red flags during a San Diego inspection include high-pressure pitches for whole-structure fumigation when the evidence shows only isolated drywood activity, refusal to provide a copy of the inspector's individual license number, and quotes that bundle inspection and treatment without offering an itemized inspection-only price. A no-cost inspection from a treatment company is appropriate when you already suspect activity and want a treatment quote; for a real estate transaction or a routine baseline, a paid third-party inspection produces a more independent document.

Frequently asked questions about San Diego termite inspections