How Much Does Mold Remediation Cost in Houston?

What do Houston homeowners actually pay?

Two sets of numbers are worth keeping apart. The first comes from Angi's Houston pages, which collect what local homeowners reported paying. The second comes from national cost guides, which are broader and useful mainly for judging how size and location change a price. Angi's Houston pages do not say which year their data covers, so treat them as a reference point rather than a quote.

A job near the bottom of that removal range is usually a single bathroom wall or a closet corner with good access. Jobs near the top tend to involve opened walls, removed flooring, an attic, or more than one room. Anything bigger than that, such as a home that took on water in a storm, can run well past the Houston high figure.

How do national ranges compare by size and location?

HomeGuide's 2026 national cost guide prices remediation at $15 to $30 per square foot, or $1,500 to $6,000 for an average job, with labor at $75 to $120 per hour. Its breakdown by area and location is a useful way to see where a Houston quote falls:

Greater Houston prices move with the home, the access, how far the growth has spread and whether flood water was involved, so use the national rows to understand scale, not to predict a bill.

Why does a Texas mold job involve two invoices?

Texas regulates mold work through the Texas Department of Licensing and Regulation (TDLR). On any one project, the company that assesses the mold cannot be the company that removes it. That is state law, not a sales preference, and it is the main reason Houston budgets look different from what friends in other states describe.

Here is how the money usually splits:

1. Assessment. A mold assessment consultant who holds a TDLR license inspects, may take samples, and writes a remediation protocol. You get the protocol at least one calendar day before removal starts. It lists the affected areas, how much material comes out, containment, protective equipment, methods and clearance criteria.
2. Remediation. A company that holds a TDLR mold remediation contractor license writes a work plan that follows the protocol and does the removal. For projects of 25 contiguous square feet or more, the contractor notifies TDLR at least five days ahead; TDLR's initial notification fee for an owner-occupied home is $25.
3. Clearance. The same consultant who wrote the protocol comes back for the post-remediation assessment. If the area fails, more remediation is needed before it can pass.

Within 10 days after the job ends, the remediation contractor gives you before-and-after photos and a Certificate of Mold Damage Remediation (CMDR). Keep it. If you sell the home, Texas rules require you to give the buyer a copy of every CMDR from the previous five years. Our step-by-step walkthrough of a remediation project covers each stage in more detail, and the clearance testing page explains what the final check looks for.

What pushes a Houston quote up or down?

Square footage matters most, but several local factors change the labor and disposal involved:

• Where the growth is. Many Houston homes have the air handler and ductwork in the attic. Attic jobs mean heat, tight access and often insulation removal, which is why attic mold work in Houston tends to cost more per square foot than a bathroom.
• Whether the AC system is involved. EPA advises against running an HVAC system you know or suspect has mold, because it can spread spores through the house. Cleaning coils, drain pans and ducts adds a separate line to the estimate; see HVAC and duct mold service for what that scope covers.
• Hidden growth. When growth is behind drywall or under flooring, the scope can grow once walls are opened. Ask how a quote handles that before you sign. The page on mold inside wall cavities explains why these jobs are hard to price up front.
• Porous materials. EPA notes that moldy porous materials like ceiling tiles and carpet may have to be thrown away. Removal and disposal cost money, and replacing drywall, trim or flooring is usually a separate bill from a builder or handyman.
• Flood history. After a flood, EPA says to assume mold growth if the home could not be dried within 24 to 48 hours. Flood jobs often cover the lower part of every wall on a floor, which moves them into the medium or large rows above.
• Foundation type. Most homes here sit on slabs, but older pier-and-beam houses in some neighborhoods add crawl space work, which HomeGuide prices nationally at $1,500 to $4,000.

Can you clean a small area yourself and skip the cost?

Sometimes. EPA says a homeowner can usually handle a moldy area under about 10 square feet, roughly a 3-foot by 3-foot patch, as long as there isn't a lot of water damage. Texas law also lets homeowners clean mold in their own home without a TDLR license, no matter the size. The 25-square-foot figure you may hear applies to something else: owners and staff of non-residential buildings, and of residential properties with 10 or more units, need a TDLR license holder once contiguous growth reaches 25 square feet. Anyone you hire to do mold work in your home needs the license.

Doing it yourself only saves money if you also fix the moisture source. EPA's guidance is blunt on this point: if the water problem stays, the mold comes back. Painting or caulking over mold is not a fix.

Will insurance pay any of it?

That depends on your policy and on what caused the mold, and no referral service or contractor can promise an outcome. What the CMDR can do is help: for residential property, Texas law limits an insurer from making an adverse underwriting decision based on prior mold damage when a CMDR shows the work was done. Read whether Texas homeowners insurance covers mold before you file, and remember that flood damage is usually a separate flood policy question.

How do you compare two Houston quotes fairly?

Quotes only line up when they are priced against the same protocol. A few checks help:

• Ask both remediation companies to bid on the written protocol from the assessment consultant, not on their own walk-through.
• Look up each company and the individuals named on TDLR's license search before you sign.
• Expect TDLR's Consumer Mold Information Sheet before any mold work starts; license holders must provide it.
• Confirm what is excluded: rebuild, contents cleaning, HVAC work, and any repeat clearance if the first check fails.
• Ask who is fixing the leak, drain line or grading problem that caused the growth.

Our guide to vetting a Texas mold company walks through those checks in order.

What does this look like in the suburbs?

The same two-company structure applies anywhere in Texas, so a homeowner in Katy or Pearland follows the same steps as one inside the Loop. Prices shift with home size and access more than with the ZIP code. If you are outside the city, start with the local pages for mold remediation in Katy or remediation companies serving Pearland, and if the mold followed a storm, read our Houston flood mold guide first, since drying and safety come before any quote.

Getting a number for your own home

The only reliable figure is one based on your home. Start with an assessment so the protocol defines the scope, then collect remediation bids against it. If you want help finding independent companies for each role, the Houston mold remediation page explains how the referral works, and the Houston mold inspection page covers the assessment side.