Why Denver’s Climate and Homes Attract squirrels
Denver sits at 5,280 feet in a semi-arid zone with just 14 inches of annual rainfall. Summers are hot (88°F average high) and winters cold (19°F average low). squirrels need shelter from both extremes. Older Denver homes — especially those built before 1950 — often have gaps under eaves, loose soffits, and uncapped chimneys that provide easy access. The city’s tree canopy, managed by Denver Parks and Recreation, includes many mature oaks and cottonwoods that produce acorns and seeds, a primary food source. This combination of abundant food, shelter, and moderate climate (compared to the mountains) supports a dense urban squirrel population.
Humane Removal: How One-Way Exclusion Works
One-way exclusion doors are the gold standard for humane squirrel removal. A professional installs a lightweight, one-way door over the main entry point. The door is angled so squirrels can push out but cannot re-enter. Over 7–14 days, all squirrels exit to forage. The technician returns to remove the door and permanently seal the opening with galvanized steel mesh or sheet metal, secured with screws and construction adhesive. This method avoids killing squirrels (which is illegal in many states) and prevents orphans left behind. After exclusion, the technician checks for secondary entry points and seals them.
The Fire Risk: Why Squirrel Gnawing Is Dangerous
squirrels’ incisors grow 6 inches per year, so they must gnaw constantly to wear them down. In attics, they target wood, drywall, and — most dangerously — electrical wiring. The National Fire Protection Association (NFPA) reports that rodents cause an estimated 20% of undetermined structure fires in the U.S. each year. In Denver’s dry climate, where humidity averages 52%, chewed wires can arc and ignite nearby insulation or wood framing. This risk is a key reason why insurance companies often require proof of professional exclusion before covering rodent-related damage.
What surveys and cost guides say about squirrel problems near Denver
Denver, Colorado homeowners often ask whether their squirrel problem is unusual and whether the price they were quoted is normal, and while public research cannot answer either question for one Denver house, it does set expectations. Three hundred to $600 is Fixr's January 2025 U.S. publisher estimate for removing squirrels from an attic, the most common place homeowners find them; it is not an observed customer bill, and local quotes vary. Some 8.4% of residents who reported squirrels or chipmunks nearby wanted a small increase in their numbers, according to Puri and colleagues' 2022 survey of 1,006 people in a southeastern U.S. metro area (published 2024); the question concerned neighborhood wildlife, not homes. Worth knowing before you call anyone in Denver: two hundred to $600 is the estimated cost of squirrel trapping in Fixr's January 2025 U.S. cost guide, a publisher benchmark rather than an observed customer bill, so quotes in your area may land outside that range. Another data point for Denver readers: in Puri and colleagues' 2022 survey of 1,006 residents of one southeastern U.S. metro area, published in 2024, squirrels and chipmunks (asked about together) were the most widely reported animals, present nearby for 89.1% of respondents; presence means sightings, not infestation. The national picture, which Denver has no reason to escape: A homeowner should budget realistically: 30% of respondents to ConsumerAffairs' February 2024 survey of 2,000 U.S. respondents who paid to address an infestation in the prior year reported spending $1,001–$5,000, a self-reported amount from a mixed pest-and-mold survey, not an observed bill. For a Denver household the practical reading is simple: people who act promptly and get the source identified tend to spend less time living with the problem, so ask any Denver provider to explain which findings on your property support their recommendation.