Most mold problems in Plano are not really mold problems. They are water problems that have been running quietly behind drywall, under a slab or above a ceiling for weeks. That is why the work that matters most happens before a single sheet of plastic goes up: a licensed assessor maps the moisture, a written protocol defines the scope, and the remediation company files notice with the Texas Department of Licensing and Regulation. Skip those steps and you are paying someone to wipe a stain while the leak keeps feeding it.
Here is how the front end of a legal Texas mold job works, and what you should have in hand before any crew arrives.
The assessment: moisture mapping before any material comes out
Under Texas rules, hired mold work on 25 contiguous square feet or more triggers a specific sequence, and it begins with a company that does not do the removal. A TDLR-licensed mold assessment consultant meters walls and floors, traces the water source, and marks how far the damage actually runs — not just where the visible growth is. The assessor and the remediation company must be two different licensed businesses on the same project. That separation is deliberate: the person who writes the scope has no financial reason to inflate it, and the person who performs the work cannot grade their own homework.
In Plano, that inspection usually turns up one of a handful of familiar culprits. Summers here are long and humid, with DFW dew points sitting in the mid-60s for roughly five months of the year. Most Collin County homes rest on a slab over shrink-swell Blackland clay, so instead of a wet basement you get a slab leak soaking a wall from the bottom up. Older east and central Plano tracts — where a large share of housing predates 1980 — often still have original cast-iron drains running beneath the slab. West Plano two-story homes built in the 1990s and 2000s frequently hide the air handler in the attic, and many of them sat under the June 2012 and April 2016 hail paths. Add the burst pipes of February 2021 and the source list becomes fairly predictable. Finding the water is the job; scrubbing the stain is the easy part.
Assessment is a separate invoice from a separate company. Published national planning ranges put a licensed mold inspection and testing visit somewhere around $303 to $1,044, averaging near $670, with air-sample lab fees typically $250 to $350 (HomeAdvisor 2025). Treat those as budgeting numbers only — actual quotes come from the companies themselves after they walk the house.
The deliverable is the protocol: a document specific to your address listing rooms, quantities, removal methods, containment strategy and the clearance criteria the job will be judged against. You are entitled to receive it at least a day before work starts. Read it closely. If it never names the moisture source, ask why. A protocol that only describes the visible mold is a protocol that will not hold up if the growth returns six months later. If you are still weighing options at this stage, it helps to understand what the full mold removal plano process looks like end to end before you commit to anyone.
The work plan, the TDLR notice and the five-day clock
Once the protocol exists, a separate TDLR-licensed remediation company writes a work plan that follows it and notifies TDLR before starting. Standard notice runs five days ahead of the start date; in a water-damage emergency, notice can go in by the next business day. The notification fee is $25. That is a small line item doing a lot of work, because it creates a public record that the job is being handled by licensed hands rather than a truck that showed up the same afternoon.
That record matters more than most homeowners realize. Unlicensed mold work carries a TDLR penalty of $2,000 to $5,000 per violation, and up to $5,000 a day under Occupations Code 51.302. A crew that offers to skip the paperwork is offering you the liability along with the discount. Verify both licenses — assessment and remediation — on the TDLR website before anyone starts cutting.
Then the physical job begins, and it looks nothing like scrubbing. Plastic sheeting and a zipper door isolate the work area, a HEPA air scrubber holds negative pressure so spores do not drift into the rest of the house, and yellow project signs go up at the entrances. Porous material with growth — drywall, insulation, carpet pad — is cut out and bagged inside containment. Framing and concrete get HEPA vacuumed and cleaned rather than painted over. Air movers and dehumidifiers then run until framing and slab reach the protocol’s dry target, and drying usually sets the schedule for everything else. Materials that look dry to the touch are not the test; the meter reading is.
Before containment comes down, the assessor returns for clearance — a visual check plus whatever sampling the protocol calls for — and writes a passed clearance report. Within 10 days of finishing, you should receive a Certificate of Mold Damage Remediation, TDI form MDR-1, signed by both companies. Ask for it by name, in writing, before you pay the final invoice.
What to gather while the paperwork is moving
Between the first call and the first truck, your own actions shape the outcome. Stop the water if it is safe to do so. Do not scrub, sand or bleach a large area — TDLR notes that bleach without fixing the water source is not a lasting fix, and aggressive sanding can spread spores through the house. Photograph the original condition before anything is disturbed. Keep children and pets out of the affected rooms. If mold may be in or near the air handler or ductwork, the EPA advises against running the system until it has been checked. The EPA also notes that wet materials dried within 24 to 48 hours usually do not grow mold, which is why speed matters more than anything you spray on a wall.
Call your insurer early. Texas policies usually cover a sudden and accidental discharge of water and usually do not cover a continuous leak, and most pay to remove mold only as part of repairing covered damage. Many cap or exclude remediation entirely unless an endorsement was purchased. Report hidden losses within 30 days of discovery. Nothing here promises coverage — read your policy. The paperwork protects you in other ways too: under Insurance Code 544.303, an insurer may not underwrite against your home because of remediated mold damage shown on a Certificate of Mold Damage Remediation, and sellers must hand buyers every certificate from the prior five years.
On permits, cutting out and cleaning mold-damaged material usually needs no Plano permit. Plumbing, foundation, HVAC, roof and wall rebuilds do, and those must be done by city-registered contractors — confirm the specifics with Plano Building Inspections before rebuild work starts.
Finally, get at least two written quotes. Published planning ranges put remediation at roughly $10 to $25 per square foot (This Old House, March 2026; Fixr, 2025, cites $10 to $30), with typical whole jobs between $1,500 and $9,000 and whole-house projects from $10,000 to $30,000 (Fixr, August 2025). Those are national planning figures, not Plano prices. Your actual quote comes from the licensed company after it sees the protocol and the house.
