Mediterranean House Gecko Habitat: Where They Live

Mediterranean house gecko habitat is built around structures. Hemidactylus turcicus is native to the western Middle East, northern Africa, and the Mediterranean region.

It has since spread far beyond that native range as an introduced species. Today it thrives almost anywhere people put up walls, porch lights, and warm nights.

Wherever it lives, the pattern stays the same. Crevices offer shelter by day. Artificial light draws insects, and insects draw the gecko, by night.

Native range

Mediterranean house gecko habitat begins with the native range, which covers countries bordering the Mediterranean Sea. It also extends into the western Middle East and parts of northern Africa. Within that range it already favored old, weathered buildings and stone walls.

That early tie to human structures explains its later spread. A gecko used to wall cracks in Greece or Egypt needed little adjustment to wall cracks in Texas. For an overview of the species, including appearance and general facts, see the Mediterranean house gecko species guide.

Introduced range in the United States and beyond

Introduced, self sustaining populations now occur across much of the southern United States. The first record was at Key West, Florida, in the 1910s (sources give 1910 or 1915), probably from a ship out of the Mediterranean.

The species is most established in Texas, Florida, and Louisiana. It has also settled in Puerto Rico, Cuba, and Mexico.

The spread has gone well beyond those three states. A 2014 survey of northern Louisiana lists the species in nearly every southern state, west to California and north to Utah, Illinois, and Maryland.

The Virginia Herpetological Society counts populations in 16 states. Virginia colonies have persisted around masonry buildings since 1988.

In Texas the gecko is recorded across most of the east and south, with gaps in the Panhandle. Animal Diversity Web also lists an Alaska record. A cold climate cannot support a breeding population there, so that record likely reflects a single transported animal.

Cold tolerance helps explain the northward creep. The Louisiana survey found geckos active at temperatures as low as 3.3°C, or 38°F, though most were on walls between 14 and 28°C (57 to 82°F). Heated buildings then carry the colony through winter.

Distribution tracks cities and towns closely within the introduced range. The gecko is synanthropic, meaning it lives in close association with people. It rarely turns up far from buildings and streetlights, and it has been documented on university campuses as often as around private homes.

Mediterranean house gecko habitat around houses, lights, and insects

Around a house, Mediterranean house gecko habitat means the outer walls after dark. A Northwest Arkansas study of building populations found a strong preference for brick surfaces. Brick made up about 72% of all observations, well ahead of stucco and other textured materials.

Smooth surfaces like glass and metal are avoided almost entirely. Toe pads grip textured stone and mortar far better than glass. That same study found geckos typically perch above 7.5 meters, or about 25 feet, out of easy reach of most ground predators.

During the day they retreat into crevices in old, worn building material. Gaps around window frames and loose siding offer similar tight spaces that hold heat and hide them from view.

Light drives where a gecko sits at night. The Arkansas research found only about 1% of geckos sat in full, direct light. Most stayed in partial darkness, about 55%, or total darkness, about 33%.

Rather than sitting in the brightest spot, most geckos position themselves just outside the light’s edge. That spot lets them ambush insects drawn to the glow without much exposure to predators or heat. Porch lights are reliable places to spot one because the gecko is drawn to the insects, not the light itself.

Foraging follows a sit and wait strategy. A gecko holds a fixed ambush position near a light source and moves only in short bursts to grab prey. The same study found no territorial behavior, so several geckos can share one well lit wall.

Seasonal activity and winter behavior

Mediterranean house gecko habitat use shifts with the seasons, because the species cannot tolerate cold. Exterior activity on buildings runs from about mid April through early October in temperate parts of the range. That window matches the warm months, when nighttime temperatures stay high enough for insects to fly and geckos to forage.

Texas A&M’s AgriLife Extension confirms the same broad pattern for the southern US. Geckos are most active from spring through fall and slow down as temperatures drop. In winter, individuals shift almost entirely to heated interior spaces, such as utility closets, rather than staying on exposed exterior walls.

Sightings on outdoor walls drop sharply once cold weather sets in. Animals likely shelter in deep crevices or move indoors where heat is available. The local population has not necessarily declined; it has simply gone out of view.

Nightly activity also follows a pattern rather than running all night. Building population research recorded two activity peaks, around 11 pm and near 3 am, then a rapid drop. Every gecko observed had retreated to shelter before sunrise.

Habitat facts at a glance

Figures in this table come from Animal Diversity Web, a Northwest Arkansas study of building dwelling H. turcicus populations, a northern Louisiana survey and the Virginia Herpetological Society. Local numbers can vary by climate and building type.

How they get inside

Indoor entry is a natural extension of Mediterranean house gecko habitat, since much of it is already the exterior of a building. Geckos enter through cracks and crevices, gaps around doorways, and poorly sealed spots on the exterior. Those same gaps double as daytime hiding places.

Once inside, geckos tend to stay near light sources and insect activity, the same pattern seen outdoors. Indoor entry becomes more common in winter, when heated interior spaces offer warmth that the cooling exterior cannot.

Pet care differs a great deal from wild habitat use. The Mediterranean house gecko care guide covers enclosure size, substrate, and temperature for a captive setup.

Nesting sites and eggs

Mediterranean house gecko habitat choice extends to reproduction. The species lays hard shelled eggs that tolerate handling and dry conditions better than soft shelled lizard eggs. Females favor the same structural crevices used for daytime shelter, so eggs are often laid inside building gaps rather than only in soil or leaf litter.

Communal nesting is common in this species. Clutches from multiple females accumulate at a single site, with 2 to 20 eggs recorded together in one location.

Oviposition in the Arkansas population studied occurred around mid June. Hatchlings appeared in late August, after a 7 to 8 week incubation. A female can likely produce more than one clutch in a season.

For a full walkthrough of clutch size, egg appearance, and incubation, see the Mediterranean house gecko breeding and eggs guide.

Frequently Asked Questions

Where do Mediterranean house geckos naturally live?

Mediterranean house gecko habitat in the wild covers the Mediterranean basin, the western Middle East, and northern Africa. There the geckos occupied crevices in old buildings and stone walls long before spreading elsewhere. That habit made the species well suited to human construction anywhere it was later introduced.

What US states have Mediterranean house geckos?

Established, breeding populations are documented most heavily in Texas, Florida, and Louisiana. The Virginia Herpetological Society lists 16 states with populations, including Alabama, Arizona, Arkansas, California, Georgia, Kansas, Mississippi, Missouri, Nevada, New Mexico, South Carolina, Utah and Virginia. An Alaska record exists, but a cold climate cannot support a self sustaining population there.

Why do Mediterranean house geckos gather near lights?

They are not drawn to light itself. They are drawn to the insects that porch lights and streetlights attract. Most geckos sit just outside the direct beam, in partial or total darkness, and use a sit and wait strategy to catch prey as it flies past.

Are Mediterranean house geckos active in winter?

Exterior wall activity drops sharply once cold weather arrives, generally after early October in temperate parts of their range. In winter, individuals concentrate in heated interior spaces, such as closets, rather than staying active outdoors.

Do Mediterranean house geckos live in trees or on the ground?

Rarely. Studies of building populations show a strong preference for vertical wall surfaces, especially brick, with typical perch heights above 7.5 meters. These geckos are climbers that hold fixed ambush positions on walls, not ground foragers.

How does habitat differ from a related pet species like the tropical house gecko?

Both are small, nocturnal geckos tied to buildings, and both hunt insects around lights. They come from different native regions, and their introduced ranges overlap only partly in warm parts of the world. See the tropical house gecko page for a species comparison.

For more climbing species tied to structures, browse the full geckos hub.