Mold Inspection & Remediation in Denver, CO

Denver is dry. Denver International Airport averages about 14.5 inches of precipitation a year under NOAA's 1991–2020 normals, and most of it arrives from April through August, often in short, hard thunderstorms. Wet drywall dries faster here than in a humid city, so when mold does take hold in a Denver home, there is almost always a steady source of water behind it.

The housing stock is a big part of the story. About 56% of Denver's homes were built before 1980, and roughly one in six before 1940, according to the Census Bureau. Older bungalows and Denver squares often have basements with aging foundations, original drain lines, and finished rooms added decades later over concrete that was never sealed. A slow seep, or a bathroom leak overhead, can keep a basement wall wet for months before anyone sees it.

Weather supplies the sudden events. The May 8, 2017 hailstorm hit the west side of the metro area and became the costliest insured catastrophe in Colorado history, at about $2.3 billion. Hail-cracked shingles and skylights let water into attics long after a storm, and deep cold snaps split pipes and sprinkler lines in exterior walls. In summer, evaporative coolers add moisture to the air, which can condense on cool basement walls.

There is no reliable Denver price survey, so every row is national. In Denver the two jobs that run high are finished basements, where drywall, carpet, and pad all come out, and attics soaked after hail. Get the scope and price in writing first, and see our mold remediation cost guide.

With no state mold license in Colorado, checking out a Denver company falls to you. Ask for proof of liability insurance, the crew's training or IICRC certification, and a written scope that lists what will be removed and how the area will be contained. Rebuilding is a separate matter: if the job turns into new walls, plumbing, or electrical work, those repairs may need a permit from the City and County of Denver.

Colorado lets one company test and clean, but many Denver owners hire an independent inspector anyway, so the person measuring the problem is not the one billing for it.

Mold that follows a sudden event, such as a pipe that burst in a cold snap or a roof opened up by hail, is more likely to be covered by a homeowners policy than mold from a slow leak or a damp basement. Many policies also limit how much they pay for mold. Groundwater seeping into a basement and surface flooding are usually excluded, so check whether your policy includes water backup or flood coverage.

After the 2017 hailstorm, the Rocky Mountain Insurance Information Association counted about 100,600 homeowners claims. If your roof was replaced or patched after a hail claim, keep the paperwork: it helps if a later leak and mold problem traces back to the same damage. See our guide on insurance and mold.