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A modern craftsman home in a leafy Silicon Valley suburb — Redwood City, California service area

Termite Control in Redwood City, CA

101 Exterminators does termite control in Redwood City as a California-licensed structural pest company, SPCB Lic. #9119, working since 2005. The Santa Cruz Mountains block most of the marine fog here, so summer afternoons sit in the high 70s and low 80s while the coast stays grey. That warmth stretches the drywood swarm season across the Mount Carmel and Centennial bungalows. We inspect first, then report by section.

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The Fog Stops at the Santa Cruz Mountains, and the Drywood Swarm Season Runs Longer for It

Redwood City sits in a sun gap. The ridge to the west strips the marine layer before it reaches town, which is why summer afternoons here average near 80°F while the coastal cities stay under cloud, and why the city has advertised itself for a century with the "Climate Best by Government Test" slogan on its downtown sign. Warm evenings are what western drywood termites (Incisitermes minor) fly on. The swarm window stretches later into fall here than it does on the ocean side of the ridge.

The wood is here to meet it. This city grew as the shipping point for redwood cut in the Santa Cruz Mountains, and its oldest neighborhoods were framed from it. Downtown, Mount Carmel and the Centennial blocks hold Queen Anne Victorians and Craftsman bungalows from before 1940, with exposed rafter tails, deep eaves and single-wall sheathing. Drywood termites never touch soil. A colony works inside a header or a rafter for years, and the first sign is usually a small cone of hard six-sided pellets on a windowsill under a pinhole.

East of El Camino Real the mechanism flips. Friendly Acres, Redwood Village and the low ground running toward Bair Island and the Port sit close to the water table, and the rain that falls between November and April keeps that soil damp. Subterranean termites (Reticulitermes) live in the soil and build pencil-width mud tubes up stem walls and pier blocks to reach framing. Redwood Creek runs from west of I-280 to the Bay and Cordilleras Creek drops out of Pulgas Ridge into Smith Slough, carrying a wet corridor through neighborhoods that look dry from the street.

How We Work in Redwood City

Our first question on a Redwood City job is which side of El Camino Real the property sits on. West of it, in Mount Carmel, Eagle Hill or up Farm Hill Boulevard, we start at the roofline — rafter tails, fascia, attic framing, window headers — because drywood termites come in from above. East toward Redwood Shores and Seaport Boulevard we open the crawl space first and read the sill plate, pier blocks and stem wall for mud tubes. Findings get photographed and sorted into Section 1 and Section 2 on a state-compliant WDO report.

Redwood City Climate

The "Climate Best By Government Test" arch downtown comes from a slogan contest a local resident won in 1925, and the survey behind it was real: a pre-World War I climatological comparison placed Redwood City alongside the Canary Islands and the North African coast. What matters for pest work is what that warmth does. The hills to the west block most of the marine layer that keeps Daly City and Pacifica cool, so summer afternoons here run hot, and the record high of 110°F was set as recently as September 6, 2022. Rainfall averages about 20.5 inches a year, nearly all of it between November and March. Drywood swarmers fly August through October, at the hottest end of the local calendar; subterranean swarms arrive with the rains, February through May.

Housing Stock

North and west of downtown, the Mount Carmel, Edgewood and Centennial blocks have pre-1940 houses on raised foundations, with the original redwood and fir framing still in the walls and attics and crawl spaces a technician can work in. Post-war tract housing spreads south and east from there. Farm Hills and Woodside Plaza went up mostly between the 1950s and the 1970s on the hillside side of town. Redwood Shores is the outlier: a 1960s planned community built on bay mud and former salt-evaporation ponds, with lagoons threaded through it and groundwater close to the slab. Termite species, foundation type and inspection access all change between those four.

Why Local Expertise Matters

Two Redwood City addresses can need opposite work. A 1926 house near Mount Carmel usually means drywood termites in old framing, reached through a crawl space and an attic. A Redwood Shores townhouse on filled ground usually means subterranean activity at the slab edge, plus moisture conditions that land as Section 2 findings on the report. Knowing which conversation you are in before the inspection starts is most of the job. We have been licensed and insured in California since 2005 and hold SPCB License #9119.

Signs You Need Termites Service in Redwood City

We perform thorough visual inspections of all accessible structural wood, attic spaces, crawl spaces, fencing, and exterior wood. Our reports clearly distinguish Section 1 conditions (active infestations requiring immediate treatment) from Section 2 conditions (conditions that are likely to lead to infestation). We issue California-required WDO reports for real estate transactions and carry the licensing required by the Structural Pest Control Board.

Hollow-sounding wood when tapped — galleries eaten from inside

Frass (fine sawdust-like pellets) near baseboards or windowsills — drywood termite excrement

Discarded wings near doors or windows in spring — swarmers leaving to start new colonies

Blistering or bubbling paint on wood surfaces — subterranean tunnel activity underneath

Mud tubes running up foundation walls or piers — subterranean termite foraging trails

Soft or sagging flooring near walls — severe structural damage to subfloor joists

Small holes in wood with discoloration around the edges

Real estate transaction requiring a WDO inspection and clearance report

Our Termites Process in Redwood City

Every job follows the same methodical approach — no shortcuts, no guesswork. Here is what to expect when you work with us in Redwood City.

01

Comprehensive Inspection

Our licensed inspector examines all accessible wood, crawl spaces, attic framing, exterior siding, eaves, and fencing. We document every finding with photos and written notes.

02

WDO Report & Recommendations

You receive a state-compliant Structural Pest Control Report distinguishing active infestations, wood damage, and conducive conditions. No confusing fine print.

03

Targeted Treatment Plan

We recommend the most effective and least invasive treatment — whether that's localized spot treatment, fumigation for widespread drywood infestation, or subterranean bait systems.

04

Treatment & Clearance

We execute the treatment per plan, return for any follow-up needed, and issue a Completion Notice clearing the structure once all Section 1 items are resolved.

Termites You Can Count On in Redwood City

State-Licensed Inspectors

Our inspectors hold California Structural Pest Control licenses and are compliant with SPCB regulations for both inspections and treatments.

WDO Reports for Real Estate

We issue the Structural Pest Control Reports required for California home sales, refinancing, and VA/FHA loans — accepted by all lenders and escrow companies.

Both Termite Species Covered

Central California has both drywood and subterranean termites. We identify which species is present and apply the treatment protocol specific to each.

Free Re-Inspection Policy

If signs return within our warranty period, we come back at no charge. Our work is backed, not just guaranteed on paper.

Termite Control FAQs for Redwood City

Why do termites swarm later in the year in Redwood City than on the coast?

Because Redwood City stays warmer and drier into fall. The Santa Cruz Mountains block most of the marine layer, so afternoon highs here hold near 80°F through September while the coastal cities sit under fog, and western drywood termites fly on warm evenings. Flights keep coming later here as a result. If you find discarded wings on a sill in October, save a few — the species changes the treatment.

Do houses in Redwood Shores get the same termites as the ones downtown?

No. Redwood Shores is built on filled bayland and lagoon frontage beside Bair Island, and the high water table there favors subterranean termites that build mud tubes up from the soil. The pre-1940 Victorians and Craftsman houses around Downtown and Mount Carmel deal mostly with drywood termites in the roof framing. Mud tubes and dry pellets are the two things to look for, and they point to different treatments.

Is a 1960s Redwood City ranch house too new to have termites?

No. The post-war tracts that fill the middle of Redwood City are around six decades old now, which is plenty of time for a drywood colony to establish in an exposed beam end or the low-slope roof edge those houses were built with. Slab-on-grade does not help either, since subterranean termites travel up through slab cracks and plumbing penetrations. What matters is whether wood is exposed to weather or touching soil, not the build year.

Free Pest Evaluation in Redwood City

CA licensed and insured. Written estimate before any work begins. Urgent situations in Redwood City are prioritized.

Trusted by Redwood City families since 2005