How much does mold remediation cost in Longmont, CO?

Most Longmont homeowners spend between $1,500 – $3,800 on mold remediation, with an average around $2,650. Local labor prices 5% above the national average, so Longmont quotes tend to land at the higher end of national ranges.

Why is mold remediation more or less expensive in Longmont than elsewhere?

Licensed trade labor in Longmont runs about 105% of the national average, and the best crews book out fastest in spring and early summer. Colorado weather drives material choices here, so ask contractors what they install most often in Longmont and why.

Do I need a permit for mold remediation in Longmont, Colorado?

Most Longmont, CO projects that change structure, electrical, plumbing or mechanical systems need a permit from the local building department; cosmetic work usually does not. Always confirm current requirements with the local building department before signing a contract, and make sure the permit is pulled by your licensed contractor.

How many quotes should I get in Longmont?

Get at least three written quotes from licensed, insured Colorado contractors. Comparing line items — not just the bottom line — is the fastest way to spot an inflated bid in the Longmont metro market.

How much does mold remediation cost in 2026?

Most homeowners pay between $1,440 and $3,600, with a national average near $2,520. Small, simple jobs land at the low end; large or premium-material jobs run well above the high end.

What is the cost per square foot?

Installed pricing usually runs $12.00 to $30.00 per square foot, including labor and materials. Expensive metros can run 15–45% higher than that range.

What drives the price up the most?

Scope and access. Larger quantities lower your per-square foot price, but difficult access, demolition of existing work, structural repairs found mid-job, premium materials and rush scheduling each add 8–30%.

Permits are typically required when the work changes structure or ties into electrical, plumbing, gas or mechanical systems. Budget $75–$600 in most cities and confirm whether your contractor pulls it — unpermitted work can block a future home sale.

How long does the job take?

Most residential projects of this type finish in one to five working days once materials are on site. Custom orders, inspections and weather are the usual causes of delay.

How many quotes should I get?

Three. Bids on the same scope commonly vary 20–40%, and the middle bid with the strongest warranty and references is usually the best value — the cheapest bid often excludes prep, disposal or permits.

Home/Cost guides/Mold Remediation/Longmont, CO

Longmont metro · Colorado

Mold Remediation cost in Longmont, CO

Longmont homeowners typically pay $1,500 – $3,800 for mold remediation. Local labor and materials price 5% above the national average.

Get my Longmont estimate Use the Longmont calculator

Longmont average

$2,650

Typical low

$1,500

Typical high

$3,800

Per square foot

$13 – $32

Sample ZIP

What drives Longmont pricing

Local labor

Licensed trade labor in Longmont runs about 105% of the national average, and the best crews book out fastest in spring and early summer.

Permits & code

Most Longmont, CO projects that change structure, electrical, plumbing or mechanical systems need a permit from the local building department; cosmetic work usually does not.

Climate & conditions

Colorado weather drives material choices here, so ask contractors what they install most often in Longmont and why.

Instant cost calculator

Adjust the inputs to see live pricing

Affected area (sq ft)120 square feet

Quality / material level

Site access

Removal / prep work

Timing

Estimated project cost

$1,596 – $2,166

Most homeowners pay around $1,881

Compare quality / material level

Cost by material in Longmont

Installed Longmont pricing per square foot.

Option	Installed cost	Pros	Cons
Surface cleaning	$14 – $19	—	—
Contained remediation	$19 – $25	—	—
Remediation with material removal	$25 – $32	—	—
Whole-home remediation with HVAC cleaning	$32 – $44	—	—

Where the money goes in Longmont

A typical $2,650 Longmont project, broken down by line item.

Labor0.45% · $12
Materials0.38% · $10
Permits & inspections0.05% · $1
Overhead & profit0.12% · $3

Common add-ons

Extras that show up on Longmont quotes but rarely in the headline price.

Third-party air testing

$315 – $945

HVAC duct cleaning

$475 – $1,600

Drywall and insulation replacement

$525 – $4,200

Dehumidification equipment

$210 – $945

Ways to save in Longmont

Fix the water source first — remediation without it fails within months.
Ask your insurer whether sudden water damage coverage applies.
Collect three written bids on an identical scope — spreads of 20–40% are normal.
Book in the off-season and stay flexible on the start date to save 5–15%.
Bundle nearby work into one mobilization so you only pay setup and travel once.
Ask what the contractor would change to cut 10% without hurting durability.

Longmont FAQs

Get a Longmont price you can budget against

Answer a few questions about your project and we'll model a low, average and premium price for your CO ZIP code — then connect you with vetted local pros.

Get free quotes from certified pros

More Longmont research

Best mold remediation companies in Longmont Mold Remediation permits in Colorado Mold Remediation near me All Colorado prices

More Colorado cities

Denver Aurora Lakewood Boulder Colorado Springs Fort Collins Arvada Westminster

Other project costs in Longmont

Fence Installation in Longmont

$1,575 – $4,200

Roof Replacement in Longmont

$8,925 – $35,700

Kitchen Remodel in Longmont

$18,900 – $99,750

HVAC Replacement in Longmont

$5,775 – $18,900

Deck Building in Longmont

$4,620 – $12,600

Window Replacement in Longmont

$473 – $1,575

See every Longmont cost guide