Bat removal in Tustin, California

Bats likely in Tustin (Orange County)

Based on known California ranges and Tustin's habitat, these are the species most likely around local buildings. Which bat is in your roof is confirmed at inspection. Peters Canyon Regional Park (340 acres, with the 55-acre Upper Peters Canyon Reservoir) just north of Tustin Ranch and Peters Canyon Wash running south toward San Diego Creek give bats water and insect-rich foraging.

• Mexican free-tailed bat (Tadarida brasiliensis): The bat we most often find in Southern California buildings. Colonies use tight, hot gaps: under clay tile, in expansion joints, behind fascia and in bridge seams.
• Big brown bat (Eptesicus fuscus): A sturdy, adaptable species that roosts in attics, wall voids and soffits. It tolerates cooler weather and may stay in structures outside summer.
• Yuma myotis (Myotis yumanensis): Closely tied to water. It forages low over rivers, ponds and channels and will roost in buildings and under bridges nearby.
• California myotis (Myotis californicus): A small crevice-roosting bat found widely across the region, including in buildings, under bark and in rock cracks.
• Western mastiff bat (Eumops perotis): California's largest bat and a Species of Special Concern. It mostly roosts in high cliff crevices and occasionally in tall buildings. You are more likely to hear its loud calls overhead than to find it in a house.

More detail: California bat species guide.

Tustin roof types & where bats get in

Victorian, Craftsman bungalow and Spanish Colonial Revival homes in Old Town, postwar stucco tracts with composition shingle or tile, and newer concrete-tile homes and townhomes in Tustin Ranch and Tustin Legacy.

Entry points we check first on Tustin homes:

• gaps behind wood siding, trim and porch roof tie-ins
• open or loose soffit panels and rafter tails
• clay or concrete tile ridge and eave closures (bird stops missing or broken)
• gaps where fascia board meets stucco or the roof deck
• gable and attic vents with torn or missing screens
• chimney chases and flashing

Bats can fit through gaps of about 3/8 inch (California Dept. of Food & Agriculture vertebrate pest handbook). Not sure? Use our signs-you-have-bats checklist.

Tustin climate & bat season

Tustin is warm and dry for much of the year with mild winters and fall wind events. Older wood-framed Old Town homes with settling trim offer many crevices, and concrete tile rooflines with missing bird stops draw summer colonies.

Local housing & attic patterns in Tustin

Tustin’s housing comes in three broad eras. Old Town is the historic core: the City adopted a Cultural Resources Overlay District there in 1988, and its historic resources surveys have identified more than 400 sites of possible distinction citywide, with the largest concentration of historic homes inside the district. When the first survey was presented in 1990, the consulting architectural historian said Tustin had the largest number of pre-1890 houses in Orange County. Those Victorian, Craftsman bungalow and Spanish Colonial Revival homes have wood siding and trim, open rafter tails, gable vents and chimneys—classic big brown bat territory. Postwar and 1960s–70s tracts add stucco, composition shingle or tile and continuous soffits. Tustin Ranch and the redevelopment of the roughly 1,600-acre former Marine Corps Air Station Tustin (officially closed July 3, 1999, now Tustin Legacy) add newer stucco homes, townhomes and condos with concrete tile, ridge caps and fascia-to-stucco joints, plus flat-roof commercial buildings. UC IPM says the bats that most often use structures in California urban areas are Mexican free-tailed bats, big brown bats, Yuma myotis and other Myotis, and pallid bats. We confirm the species and map every entry point before any exclusion device goes on.

Bat seasonality around Tustin

UC IPM advises against excluding a colony while flightless young may be present, usually May through September in California, and notes that most bats leave buildings in late fall. Late fall and winter are therefore the usual Tustin exclusion window. Bats are active around central Orange County through the warm months, and the OC Health Care Agency reported a rabid bat found in neighboring Irvine in late September 2026. Winters are mild, so a bat can still turn up in a heated building; call any month if you hear scratching, smell ammonia or find guano.

Neighborhoods & landmarks we know

We cover all of Tustin: Old Town and the Cultural Resources District, the older tracts around it, Tustin Meadows, Tustin Ranch, the Tustin Legacy neighborhoods and nearby unincorporated North Tustin. Peters Canyon Regional Park, a 340-acre OC Parks preserve with the 55-acre Upper Peters Canyon Reservoir, sits just north of Tustin Ranch, and Peters Canyon Wash runs south through the city toward San Diego Creek—water and open space that support dusk insect activity without implying a roost on any specific property. Nearby city pages cover Irvine, Santa Ana, Orange and Costa Mesa.

Why hire a local Southern California crew

Old Town homes need repairs that match original wood siding, trim and vents—the City publishes residential design guidelines for the Cultural Resources District, so check with the City before visible exterior changes. Newer Tustin Ranch and Tustin Legacy buildings need tile, ridge and stucco closures and HOA-friendly documentation. We seal with custom inserts and clear products instead of spray foam and route Tustin jobs with nearby Irvine, Santa Ana and Orange work when schedules allow.

• Bat specialists since 2011 — bats are our flagship service
• Documented inspection: openings numbered, photographed, primary vs. secondary
• Targeted repair or whole-structure seal (warranty on whole-structure)
• Humane one-way exclusion · maternity timing per UC IPM (usually May–September)
• High-rise / rope-access capacity for elevated buildings
• We finish failed prior jobs—remove old foam and devices
• Two-year written warranty on sealed whole-structure work
• Local owners, California coverage, backed by a multi-state team

Typical Tustin jobs start with a phone consultation, then an attic inspection, followed by humane exclusion and optional guano cleanup. Commercial properties can use our commercial bat removal program.