Asbestos testing means a certified inspector takes samples of a suspect material and a lab says whether it contains asbestos. A general estimate for mail-in lab analysis is about $30 to $75 per sample (InspectandTest, updated 2026-10-06; may earn commission from links). That is not a St. Louis price. In Missouri, a regulated demolition or renovation needs an inspection by a person the state has certified as an asbestos inspector. To get a testing quote, send the quote form on this page or call and leave a message. We call you back within one business day, and St Louis Asbestos Removal gives you a quote. You pay St Louis Asbestos Removal nothing for the call or the request.
Why test? You can't tell asbestos by looking.
CPSC says it plainly: "You can't tell whether a material contains asbestos simply by looking at it, unless it is labeled." A lab result is how you find out, or you can presume the material is asbestos. EPA adds that a trained and accredited asbestos professional should take the samples.
Testing is worth it when work is about to disturb an older material, or when the material is already damaged. Testing isn't the first step for material in good condition. Test before you disturb it. EPA's advice is blunt: "Usually the best thing is to leave asbestos-containing material alone if it is in good condition." EPA also says exposure may occur only when the material is disturbed or damaged.
Should I test my home for asbestos? When to test.
Asbestos testing before renovation or demolition
A kitchen gut, a basement remodel or a wall removal disturbs material. For a regulated structure, Missouri requires a thorough inspection by a Missouri certified asbestos inspector before the work starts. DNR's inspection sheet, PUB2349, says a renovation inspection covers the areas the work will affect. A demolition inspection should include destructive sampling and access to all areas. A regulated project needs the inspection whatever year the building was built.
Book the inspector before you set a date. Demolition notice is due at least 10 working days ahead, even if no asbestos is found, and DNR says the inspection report should accompany the notice.
Buying or selling an older home
The sources we read give no buyer-testing or seller-disclosure rule, so this page states none. CPSC says many insulation and building products contained asbestos until the 1970s. For home buyers, the rule of thumb is the same: test a material before work that will disturb it.
Damaged or water-damaged material
Say a ceiling is falling, pipe wrap is torn, or old flooring lifted after a leak. Do not disturb it further and keep debris wet, as DNR says in its homeowner sheet, PUB2121. Leave it undisturbed until it is identified. Then use a Missouri-certified inspector or assume the material contains asbestos.
PUB2349 says no sampling is required if the inspector presumes the material is asbestos and the owner treats it that way.
A home inspection that flags suspect material
If a home inspection report flags a material as suspect, treat that as a flag, not a result. Test it before any work that would disturb it.
Cost
What does asbestos testing cost, and what moves the price?
We found no published St. Louis price for asbestos testing, so we give none. The table shows a general estimate and one company's listed fee. Read them as a market signal only.
| Item | Figure | Source and date |
|---|---|---|
| Mail-in lab analysis, standard turnaround (general estimate, no region given) | About $30 to $75 per sample | InspectandTest guide, updated 2026-10-06; may earn commission from links |
| First sample, collection and analysis | $150 | Bluestone Environmental, a Chicago company, FAQ page, retrieved 2026-10-23 |
| Each additional sample | $25 | Bluestone Environmental, same page, retrieved 2026-10-23 |
Use the table to see how a quote is built: a visit or first-sample charge, then a smaller charge for each added sample. We do not know whether these prices include a written report in Missouri's format. Ask for the asbestos test price per sample and the number of samples in writing, and ask what the asbestos inspection cost includes: sampling, lab and report.
What moves an asbestos inspection price
- Sample count. A fee that rises per extra sample means a house with many materials costs more than one with a single ceiling. DNR's 3-5-7 minimum, below, affects counts.
- Air tests. If air testing is quoted, ask for it as its own line.
- Home size and scope. A renovation inspection covers the areas the work affects. A demolition inspection covers all areas, so a whole building is a larger job.
- Presuming instead of sampling. If you treat the material as asbestos, sample fees drop out.
- The report. Check that the quote includes a written report that follows DNR's content list, not only lab sheets.
Comparison
How do I get an asbestos testing quote and compare companies?
Ask for a written asbestos testing quote that names what you pay for. An asbestos inspection quote or estimate that says only "testing, one price" cannot be compared. Request a quote from at least two asbestos testing companies, or from an asbestos inspection company or inspection contractor, and ask each:
- Who is the certified asbestos inspector, and can I see the certificate copy?
- Which lab will analyze the samples, and is it accredited by the National Institute of Science and Technology, as PUB2349 words it, or in the AIHA bulk analysis program?
- How many samples do you plan, and why, given the 3-5-7 minimum DNR recommends?
- Is the price a first-sample fee plus a fee per added sample, or one flat figure?
- Will the written report include everything on DNR's list, with the analyst's signature and your certificate copy?
- Do you also sell removal? Can I take your report to other companies for quotes?
- If air testing is quoted, who takes the samples, and what result counts as passing?
- When will I have results, and is there a rush option and a charge for it?
A price only means something next to those answers. Ask whether the estimate is free when you ask for the quote.
Local rules
Who may inspect an asbestos job?
DNR's pages call inspectors certified and removal firms registered. DNR certifies individuals as asbestos inspectors, and a removal firm is a registered asbestos abatement contractor. A person must be certified by DNR before taking part as an inspector. Certification needs a Missouri-accredited AHERA training course and a score of at least 70% on the Missouri Asbestos Exam.
So a certified asbestos inspector is a named person, not a company. Ask for the name and certification before you book. DNR publishes public lists of certified individuals at dnrservices.mo.gov. Ask the inspector for the certificate copy that PUB2349 says goes with the report.
Home inspectors who are not asbestos-certified cannot do the inspection a regulated project needs. DNR's rule is that all inspections for a regulated project be done by a person certified as an asbestos inspector. A home inspector's note is not that inspection.
Check the current rule with the official source: dnrservices.mo.gov
Comparison
Inspector vs abatement contractor: why to use a separate firm?
EPA says: "It is better to use two different firms so there is no conflict of interest." A tester who also sells the removal has a stake in the result.
Why use a separate firm in practice? Hire the tester first and get the written report. Then ask removal companies to quote from that same report, so every bid prices the same quantities. The DNR pages we read do not address it, so ask DNR if you need to be sure. For the larger-building case, see how an asbestos survey differs from a single-material test.
Step by step
What happens during an asbestos inspection?
DNR's report rules show what a visit must produce, which gives this sequence.
- Scope. You say what you plan: certain rooms, a whole demolition or damaged material. That sets the areas inspected.
- Walkthrough. The inspector identifies each suspect material and where it is. The report lists the areas inspected, including inaccessible areas, and the date.
- Sampling. The inspector samples each material or presumes it contains asbestos, with your agreement.
- Chain of custody and lab analysis. Samples go to a lab with a record of who handled them. PUB2157 says the report includes lab results and chain of custody.
- Written report. You receive the report.
Ask which of these steps your visit includes before you book.
What must your asbestos report include, and what do you do with it?
For a regulated project, PUB2349 lists what the inspection report contains. Use it as a checklist:
- A description of the structure, the areas inspected including inaccessible areas, and the date.
- The location of each homogeneous material known or assumed to contain asbestos.
- The condition of each material, and whether it is regulated, if an assessment is done.
- Quantities in square, linear or cubic feet.
- Lab data: the lab name, the results and the analyst's signature.
- The inspector's signature and a signed, dated copy of the inspector's department certificate.
Hand the same copy to every removal company that quotes. If a quote's quantities differ from the report, ask for the reason in writing. If the lab name, analyst signature or certificate copy is missing, ask the inspector to correct it.
Comparison
Which materials are commonly sampled in a home?
An inspector samples materials that may contain asbestos and that the work could touch. EPA and CPSC name these places in homes. Being on the list does not prove a material contains asbestos. Each still has to be tested or presumed.
- Ceilings and walls: textured paint and patching compounds used on wall and ceiling joints (EPA, CPSC), and material sprayed on for soundproofing or decoration (CPSC).
- Floors: vinyl floor tiles, the backing on vinyl sheet flooring, and adhesives (EPA, CPSC). The floor tile page covers the removal side.
- Pipes and heat: hot water and steam pipes coated with asbestos or wrapped in an asbestos blanket or tape, and oil and coal furnaces and door gaskets (EPA, CPSC). See the pipe insulation page.
- Attic and walls: vermiculite insulation. EPA says to assume it contains asbestos and not to disturb it.
- Roof and siding: roofing and siding shingles. CPSC says some are asbestos cement.
Ask which materials your inspector will sample, and why. Questions to put to the inspector: vinyl tile and black mastic; textured and popcorn ceilings; acoustic tiles; joint compound; pipe and boiler insulation; vermiculite; roofing and felt; transite siding; duct wrap and flex connectors. Whether each one contains asbestos is what the lab result decides, and this page rates none of them. OSHA's construction standard names mastics and roofing felt, and its definition of thermal system insulation covers material on pipes, boilers and ducts.
A ceiling's age alone does not settle whether it contains asbestos. Only a result does.
Treat each different material separately. One floor with two different tiles is two materials. The report lists where each is and how much, because a removal quote depends on it.
Results show asbestos: leave in place, repair, encapsulate or remove.
What to do if asbestos is found? The condition and location of the material, and your plans, decide the next step.
- Intact and out of the way: leaving it in place is often the right call. Do not disturb it.
- Damaged: do not disturb it further and keep debris wet, as DNR says. Then have trained people assess it.
- In the path of work: repair, encapsulate or remove are the options to weigh with the inspector or a removal company.
For removal on a regulated project, PUB2157 says a Missouri registered asbestos abatement contractor must do the work, using workers certified by the department.
Local rules
Is asbestos testing required by law in St. Louis?
For regulated projects, yes. Missouri requires a thorough inspection before demolition or renovation of a regulated structure, and the federal NESHAP does the same for a facility. For most single-family homes the state does not require it, because DNR says "Most single-family residences are exempt." That is the state level only. The County adds its own rules, covered below.
Under 40 CFR 61.145, the full demolition requirements start at 260 linear feet on pipes, 160 square feet on other components or 35 cubic feet off components. Below that, only notification applies. PUB2157 uses the same figures.
The state wants notice, including demolition notifications, at least 10 working days before work starts on a regulated project. PUB2157 puts the duty on both sides: "It is the obligation of the owner and any contractors involved to ensure these notifications are provided." DNR says the inspection report should accompany the notice, so get the report before you send it.
Cost
What are St. Louis County's rules and 2026 fees for asbestos work?
St. Louis County runs its own asbestos program through its Air Pollution Control Program. The County says the program "issues permits, inspects asbestos removal sites and investigates reports of illegal asbestos removal." These rules apply in the County, on top of the state's. The City of St. Louis is separate (see the end of this section). We read the County's pages on 2026-10-24.
A lower threshold than the state's
Under the County rules, an asbestos abatement project is work to encapsulate, enclose or remove 10 square feet or 16 linear feet or more of friable asbestos-containing material, or demolition of buildings containing that much. The state figures are 160 square feet, 260 linear feet or 35 cubic feet. The County threshold is far smaller, so a small job can count as a County project.
Owner-occupied single-family homes
The County rules define "building" as any structure excluding single-family, owner-occupied dwellings. This is a different test from the state exception, which covers a single residential structure with four or fewer dwelling units. If your house is a rental, vacant or a multi-unit building, ask the County whether it counts.
Notice, certification and 2026 fees
The County rules require written notice to the staff director at least 10 working days before a project, plus notice of completion. A nonrefundable notification fee is charged for each project. Anyone doing an abatement project must be registered with DNR. No one may work on a project, or inspect for asbestos-containing building material in the County, unless currently certified by DNR. On site, people must show proof of registration and certification, the latest air sampling results, photo ID and proof of training.
| County fee (effective January 1, 2026) | Amount |
|---|---|
| Abatement permit, project under 160 sq ft, 260 linear ft or 35 cu ft | $120 |
| Abatement permit, project at or above those amounts | $240 |
| Asbestos inspection fee (limit of two billable inspections) | $230 |
| Demolition notification fee (from 2026-07-01) | $120 |
Source: St. Louis County fee page, retrieved 2026-10-24. These are County fees, not what a private tester charges.
Emergencies and clearance
For an emergency abatement project, the County rules say to phone the County within 24 hours of the onset and get approval of emergency status. After hours or on a weekend, contact the Air Pollution Control Program.
Inside the City of St. Louis
The City has its own agency. DNR's PUB2157 names the City of St. Louis Division of Air Pollution Control (Air Quality Program) as a local agency for notifications. We did not read the City's rules, so ask that office what it requires before work inside the city limits.
Residential and commercial asbestos testing
Residential asbestos testing at a house
For home asbestos testing or a home asbestos inspection, federal NESHAP leaves out residential buildings with four or fewer dwelling units. Missouri's PUB2157 says the same: a single residential structure with four or fewer units is an exception.
The exception does not cover two or more residential structures, two or more mobile homes, or any structure used for non-residential purposes. Being exempt does not stop you from testing. It means the state does not require it.
Commercial asbestos testing
DNR says its rules apply to commercial structures in Missouri and to some residential ones. For commercial properties, a Missouri certified inspector's inspection comes before demolition or renovation, and the 10-working-day notice applies to regulated work.
Asbestos air testing, air monitoring and clearance testing
Air testing measures what is in the air. The name covers two jobs, and a quote should say which one it means.
- Air monitoring of the work. OSHA's construction standard (29 CFR 1926.1101) requires an employer to assess exposure before an asbestos job and to monitor daily the workers doing Class I or II work, unless a negative exposure assessment covers it. The 8-hour limit is 0.1 fiber per cubic centimeter. It is about the crew, so ask each removal company how it monitors.
- Asbestos clearance testing. Post abatement air testing is the clearance step: final clearance air monitoring at the end of a project. The County rule requires third-party final clearance air monitoring by an air sampling professional for indoor projects of 160 square feet or 260 linear feet or more. Smaller projects may use the contractor's own air sampling professional. For those larger projects the County also wants a lab analysis of all regulated material to be disturbed.
DNR certifies "Asbestos Air Sampling Professionals." Air sampling technicians need a training course instead, and must keep proof at the site with photo identification. The County rule above sets who must sample. Ask the sampler and the County for the passing limit in writing before work starts.
Turnaround times and rush analysis
We found no neutral source for lab turnaround or for what rush analysis costs, so we give no number. Ask each company for the visit date and the lab date in writing. If you need rush asbestos testing, ask whether a rush option exists, what it adds to the price and what it promises. A rush must not replace the written report.
DIY sampling and test kits: risks and EPA advice
An asbestos test kit has you take the sample yourself. EPA advice goes the other way: a trained, accredited asbestos professional should take the samples, and taking them yourself is not recommended. EPA says exposure may occur when the material is disturbed.
DNR's homeowner sheet says to use a Missouri-certified inspector or assume the material contains asbestos. Can I test for asbestos myself to save money? The table above shows per-sample lab fees, so compare a professional visit against a kit and its risks before you decide.
Local rules
Sampling rules: the 3-5-7 rule and presuming asbestos
How many samples per material? PUB2349 says DNR recommends inspectors follow "the 3-5-7 rule" at a minimum and does not define it. The federal school sampling rule, 40 CFR 763.86, uses 3, 5 and 7 samples for surfacing material by area, where that rule applies: 3 up to 1,000 square feet, 5 up to 5,000, 7 above. Ask your inspector which rule they mean.
Use the minimum as a quote check: if an inspector proposes one sample for a large ceiling, ask why.
The other option is presuming material is asbestos instead of sampling. PUB2349 allows it when the certified inspector presumes and the owner treats the material as asbestos. OSHA's worker standard presumes thermal system insulation and surfacing material in buildings built no later than 1980 to contain asbestos, unless the presumption is rebutted.
Comparison
Lab methods: PLM, TEM, PCM and accredited labs
Asbestos lab testing is where the verdict comes from, and asbestos sample testing is only as good as the lab. PUB2349 says DNR "strongly recommends" a lab accredited by the National Institute of Science and Technology, as PUB2349 words it, or one with successful participation in the AIHA asbestos bulk analysis program. The report must carry the lab's name, the results and the analyst's signature.
The federal definition of friable asbestos material refers to polarized light microscopy (PLM) for bulk samples (40 CFR 61.141), and EPA's interim method for bulk insulation samples uses PLM point counting. It reports a low count as "<1% asbestos." Federal definitions draw the line at 1 percent. Phase contrast microscopy (PCM) reads air samples, both in OSHA's construction standard and in the school rule's clearance tests. Those tests also allow transmission electron microscopy (TEM), and OSHA's Appendix B mentions electron microscopy as a way to adjust PCM data. Ask the lab which method it will use for your material and what it reports below 1 percent.
Dust and surface samples
The official sources we read do not describe dust or surface sampling for homes, so we give no method or price. If a quote lists a dust test, ask what question it answers.
Local rules
Floor tile, mastic and the presume-asbestos rule
OSHA's standard assumes resilient flooring, including its mastic and backing, contains asbestos unless an industrial hygienist shows it does not. Class II work covers removal of floor tile, sheeting, roofing, siding shingles and mastics. That is a worker rule, but it shows that glue and backing count with the tile. For a quote, ask whether the inspector samples tile, mastic and backing separately or presumes them.
Asbestos testing near you: how to get a quote
Send the quote form on this page, or call and leave a message. We call you back within one business day, and St Louis Asbestos Removal gives you a quote. We take calls from St. Louis, Florissant, University City, Kirkwood and Maryland Heights, and from Belleville, O'Fallon, Granite City and Edwardsville in Illinois. This page covers Missouri rules, so for an Illinois address ask which state rules apply. You can also use the contact page.
Asbestos testing questions answered
Should I test my home for asbestos?
Test before work that will disturb an older material, or when a material is damaged. If material is intact and you are leaving it alone, EPA says leaving it is usually best.
How much does asbestos testing cost in St. Louis?
InspectandTest gives a general estimate of about $30 to $75 per sample for mail-in analysis at standard turnaround. One Chicago company lists $150 for the first sample and $25 for each additional one. Neither is a St. Louis price. Ask for a written quote showing sample count, lab and report.
How long does asbestos testing take?
We found no neutral figure, so none is promised. Get the visit date and the lab date in writing.
Can I take my own asbestos samples?
EPA says an accredited professional should take them. DNR says to use a Missouri-certified inspector or assume the material contains asbestos.
Is asbestos testing required by law in St. Louis?
For a regulated structure, yes. Most single-family residences are exempt at the state level. St. Louis County counts a project as abatement at 10 square feet or 16 linear feet of friable material, and its definition of "building" excludes single-family owner-occupied dwellings. Ask the City's air pollution office about city addresses.
Should the same company test and remove the asbestos?
EPA says it is better to use two different firms so there is no conflict of interest. The DNR pages we read do not address it, so ask DNR if you need to be sure.
What must an asbestos inspection report include?
PUB2349 lists six items: the structure, areas inspected and date; each material's location; condition and whether it is regulated; quantities; lab data with name, results and analyst signature; and the inspector's signature with a certificate copy.
What should I do if the test finds asbestos?
Do not disturb damaged material, and keep debris wet. If it is intact, EPA says leaving it alone is usually best. If it sits in the path of regulated work, a Missouri registered abatement contractor does the removal.
How do I get an asbestos testing quote?
Send the quote form on this page or call. We call you back within one business day, and St Louis Asbestos Removal gives you a quote. You pay St Louis Asbestos Removal nothing for the call or the request. Ask for the sample count, lab and report as separate lines.
Sources
- EPA, Protect Your Family from Exposures to Asbestos (updated 2026-06-25; retrieved 2026-10-18).
- Missouri DNR, PUB2349, Asbestos Inspection Report Requirements (05/07/2024; retrieved 2026-10-23).
- Missouri DNR, PUB2157, Asbestos Requirements for Demolition and Renovation Projects (05/07/2024; retrieved 2026-10-18).
- Missouri DNR, PUB2121, homeowner asbestos guidance (05/07/2024; retrieved 2026-10-18).
- Missouri DNR, Asbestos (retrieved 2026-10-18).
- Missouri DNR, Asbestos Occupation Certification (retrieved 2026-10-18).
- Missouri DNR, Asbestos Contractors list (retrieved 2026-10-18).
- 40 CFR 61.141, definitions and 40 CFR 61.145, standard for demolition and renovation (retrieved 2026-10-18; 61.141 re-read 2026-10-23).
- 40 CFR 763.86, sampling (asbestos in schools) (retrieved 2026-10-23).
- Bluestone Environmental, FAQ (retrieved 2026-10-23).
- EPA, Learn about asbestos (retrieved 2026-10-23).
- CPSC, Asbestos in the Home (retrieved 2026-10-23).
- EPA, Protect Your Family from Asbestos-Contaminated Vermiculite Insulation (retrieved 2026-10-23).
- 40 CFR 763.90, response actions and clearance (asbestos in schools) (retrieved 2026-10-23).
- 40 CFR 763 Subpart E Appendix E, interim PLM method for bulk insulation samples (retrieved 2026-10-23).
- 29 CFR 1926.1101, OSHA construction asbestos standard (via Cornell LII) (retrieved 2026-10-23).
- St. Louis County, Air Pollution Control, Asbestos (program and 2026 fees) (retrieved 2026-10-24).
- St. Louis County, Asbestos Abatement Rules and Regulations (retrieved 2026-10-24).
- Missouri DNR, Asbestos Inspectors list (public list with expiration dates and status; retrieved 2026-10-24).
- InspectandTest, asbestos tile removal cost (updated 2026-10-06; retrieved 2026-10-23; the site may earn commission from links).
Comparison
Which materials in older homes may contain asbestos?
Pick the material you see to read what the EPA says about it.
- Loose, pour-in attic insulation (gray-brown or silver-gold pebbles)
- The EPA describes vermiculite insulation as a pebble-like, pour-in product that is usually gray-brown or silver-gold. Its advice: assume it contains asbestos and do not disturb it. Do not try to remove it yourself; use a trained professional if it needs to be removed. (U.S. EPA)
- Vinyl floor tiles, sheet flooring backing or flooring glue
- The EPA lists vinyl floor tiles, the backing on vinyl sheet flooring and adhesives among the household products that may contain asbestos. You generally cannot tell by looking. A lab test is the only way to be sure, and undamaged material is best left alone. (U.S. EPA) Read more
- Textured or popcorn-style ceiling or wall finish, or patching compound
- The EPA lists textured paint and patching compounds used on walls and ceilings among the products that may contain asbestos. It does not name popcorn ceilings on that page. You cannot tell by looking; only a lab test can confirm it. The EPA says not to saw, sand, scrape or drill materials that may contain asbestos. (U.S. EPA) Read more
- Pipes wrapped in insulation, tape or a blanket (hot water or steam)
- The EPA says hot water and steam pipes coated with asbestos material or covered with an asbestos blanket or tape may contain asbestos. You cannot tell by looking. If the wrap is damaged or will be disturbed, have a trained, accredited professional sample it. (U.S. EPA) Read more
- Roofing or siding shingles on an older house
- The EPA lists roofing and siding shingles among the products that may contain asbestos. Only a qualified laboratory can confirm it. Leave undamaged material alone, and have a professional sample it before any renovation that would disturb it. (U.S. EPA) Read more
- Old oil or coal furnace, or furnace door gaskets
- The EPA lists oil and coal furnaces and door gaskets with asbestos insulation among the possible sources. You cannot tell by looking. Have a trained, accredited professional take a sample before any work that would disturb it. (U.S. EPA) Read more
- Something else, or the material is damaged (fraying, crumbling)
- The EPA says the only way to be sure is to have the material tested by a qualified laboratory, and it recommends testing suspect material if it is damaged (fraying, crumbling) or if a renovation would disturb it. Samples should be taken by a properly trained and accredited asbestos professional. (U.S. EPA) Read more
This is not a test. The EPA says you generally cannot tell by looking whether a material contains asbestos; only a qualified laboratory can confirm it, and a trained, accredited professional should take the samples.