--- title: "Missouri asbestos notice: the 10 working day rule explained" description: "Missouri DNR wants notice at least 10 working days before demolition or abatement of a regulated structure. See what is covered, what to attach and who files." url: https://aes.multisites.ai/blog/missouri-asbestos-notification-10-working-days publisher: Advanced Environmental Services phone: +1-314-865-2662 quote: https://aes.multisites.ai/contact --- Regulation: 4 min read, published October 30, 2026 # Missouri asbestos notice: the 10 working day rule explained Missouri requires notification to the Department of Natural Resources at least 10 working days before crews start a demolition or asbestos abatement project on a regulated structure. Demolition notices are required even when no asbestos is found. The inspection report and lab results must go with the notice. The owner and the contractors share the duty to file. [Request a Quote](https://aes.multisites.ai/contact)[(314) 865-2662](tel:+1-314-865-2662) ![AES crew member in a protective suit scraping old wall material from scaffolding](https://aes.multisites.ai/_astro/100.Beg0SK9K_Z2cMAXv.webp) ![Building wrapped in white containment sheeting with an AES storage container in front](https://aes.multisites.ai/_astro/AESI-083.BQiJ3BQs_Z1FKjAJ.webp) ![Mold spots on attic roof sheathing between wooden rafters](https://aes.multisites.ai/_astro/121._02wx8fs_Z18gd2e.webp) ## What is Missouri’s 10 working day asbestos notice rule? Missouri’s Department of Natural Resources (DNR) requires notice at least 10 working days before crews begin a demolition or an asbestos abatement project on a regulated structure. The clock counts working days, not calendar days. Weekends do not count. The notice gives DNR time to review the plan and inspect the site. The rule comes from the federal [NESHAP](https://aes.multisites.ai/glossary/neshap) asbestos standard and Missouri’s own air rules. DNR states it plainly on its notification page: it “requires notification of demolitions and abatement projects involving regulated structures at least 10 working days before crews begin a project.” Plan your schedule around that gap. A late notice can hold up a demolition crew, a dumpster order and a utility shutoff. ## Which buildings are regulated? Most commercial, industrial, institutional and public buildings are regulated. Most single-family homes are not. DNR says its asbestos regulations “apply to commercial structures in Missouri and to some residential structures,” and that most single-family residences are exempt. The exemption is narrow. DNR fact sheet PUB2157 sets these limits as of October 2026: Situation Regulated? One residential structure with four or fewer dwelling units Exempt Two or more residential structures in one project Not exempt Two or more mobile homes Not exempt A building once used for a purpose other than residential, such as a house converted to commercial use Not exempt A residential structure used in a fire training exercise Not exempt If your building sits near the line, ask DNR before you assume an exemption. A wrong guess means a violation, not a saved fee. ## What do you have to send with the notification? Send a signed notification form, the asbestos inspection report and the lab results. DNR lists two forms on its asbestos page: “Asbestos NESHAP Notification of Demolition and Renovation MO 780-1923” and “Asbestos Abatement Project Notification MO 780-1226.” Email completed, signed forms to [AsbestosNotifications@dnr.mo.gov](mailto:AsbestosNotifications@dnr.mo.gov). A review fee applies to each notification. The fact sheet does not list the amount, so check the current form before you budget. The inspection report must come from a Missouri certified asbestos inspector. DNR says it should list all suspect materials and show “the amount, location, category and condition” of each. It should also include the lab results and chain of custody for every sample. An [asbestos survey](https://aes.multisites.ai/glossary/asbestos-survey) done before the notice is what makes the notice possible. ## Do you still file if no asbestos is found? Yes, for a regulated demolition. DNR says the demolition notice “is required even if there is no asbestos identified in the structure being demolished.” The department wants the chance to inspect before the building comes down. The inspection report and lab results still go with the notice, because they prove that nothing was found. ## What counts as an emergency or an unsafe building? DNR can waive the 10 working day period only in narrow cases. If a structure is in danger of imminent collapse and a state or local government agency ordered it demolished, the department can waive the wait. Notice should go in as early as possible, and no later than the next working day. A copy of the government order must be included. DNR also says alternate notification rules may apply in emergencies. In that case, call the Air Pollution Control Program at 573-751-4817. Do not guess. ## Who files the notice, and who removes the asbestos? The owner and every contractor on the job share the duty to file. DNR says it is “the obligation of the owner and any contractors involved to ensure these notifications are provided.” Failure to file is a violation. Do not assume the demolition contractor filed. Ask for the notice of receipt letter. Removal is a separate rule. If the inspection finds 160 square feet, 260 linear feet or 35 cubic feet or more of [regulated asbestos-containing material](https://aes.multisites.ai/glossary/regulated-asbestos-containing-material-racm), all of it must be removed by a Missouri registered asbestos abatement contractor. Workers on that job must hold DNR certification. This is not a do-it-yourself task. Read the full process in our guide to [Missouri demolition and renovation asbestos rules](https://aes.multisites.ai/guides/missouri-demolition-and-renovation-asbestos-rules). ## Do St. Louis and St. Louis County add steps? Yes. DNR fact sheet PUB2157 says St. Louis city and St. Louis County each have a local agency with an agreement to enforce Missouri’s asbestos rules and local ordinances. DNR tells owners to contact the local agency before starting work in those places, because additional requirements may apply. For the city process, read our post on the [City of St. Louis asbestos abatement permit](https://aes.multisites.ai/blog/st-louis-city-asbestos-abatement-permit). For county work, call the St. Louis County Health Department before you file with DNR. ## What should you do first? Follow this order and the 10 working days will not surprise you. 1. Confirm whether your structure is regulated, using the table above. 2. Hire a Missouri certified inspector to survey and sample suspect materials. See our [asbestos survey](https://aes.multisites.ai/asbestos-survey) and [asbestos testing](https://aes.multisites.ai/asbestos-testing) pages. 3. Read the report. Add up the regulated material against the 160, 260 and 35 thresholds. 4. File the correct DNR form with the report and lab results. Pay the review fee. 5. Keep the notice of receipt letter. Fix any deficiency it lists. 6. Start work only after the notice period ends. A plan that starts at step 4 is already late. Order the inspection weeks before your target start date. ## Next step Advanced Environmental Services handles [asbestos abatement](https://aes.multisites.ai/asbestos-abatement), surveys and [demolition](https://aes.multisites.ai/demolition) in St. Louis, St. Charles and Columbia, Missouri. Call (314) 865-2662 or use the quote form at [/contact](https://aes.multisites.ai/contact) to plan your notice dates before you set a start date. ## Frequently asked questions ### How far ahead do I have to notify Missouri DNR before a demolition? At least 10 working days before the demolition of any regulated structure. The Missouri Department of Natural Resources says it uses that time to inspect the structure and confirm that all asbestos issues are handled before crews begin. ### Do I need to file if the inspector finds no asbestos? Yes, for a regulated demolition. DNR fact sheet PUB2157 says the demolition notice is required even if no asbestos is identified. Attach the inspection report and the laboratory results that show the result. ### Who is responsible for filing the notice, the owner or the contractor? Both. DNR says it is the obligation of the owner and any contractors involved to make sure the notifications are provided. Failure to submit a notification is a violation of the department's requirements. ## Terms on this page - [Regulated asbestos-containing material (RACM)](https://aes.multisites.ai/glossary/regulated-asbestos-containing-material-racm) - [Asbestos-containing material (ACM)](https://aes.multisites.ai/glossary/asbestos-containing-material-acm) - [Asbestos survey](https://aes.multisites.ai/glossary/asbestos-survey) - [NESHAP](https://aes.multisites.ai/glossary/neshap) ## Sources 1. [Missouri DNR: Asbestos Renovation and Demolition Notification](https://dnr.mo.gov/air/asbestos-renovation-demolition-notification) 2. [Missouri DNR: Asbestos](https://dnr.mo.gov/air/business-industry/asbestos) 3. [Missouri DNR: Asbestos Requirements for Demolition and Renovation Projects (PUB2157)](https://dnr.mo.gov/document-search/asbestos-requirements-demolition-renovation-projects-pub2157/pub2157) 4. [Missouri DNR: Asbestos Requirements for Demolition and Renovation Projects (PUB2157), exemption](https://dnr.mo.gov/document-search/asbestos-requirements-demolition-renovation-projects-pub2157/pub2157) 5. [Missouri DNR: Asbestos Requirements for Demolition and Renovation Projects (PUB2157), responsibility](https://dnr.mo.gov/document-search/asbestos-requirements-demolition-renovation-projects-pub2157/pub2157) Written by Advanced Environmental Services and checked against the sources above on October 30, 2026. Rules change, so check the linked page before you act. ## Keep reading - [Missouri asbestos rules for demolition and renovation: who you notify and whenIn Missouri, a regulated demolition or renovation needs an inspection by a certified asbestos inspector and a notice at least 10 working days before work starts. Thresholds of 160 square feet, 260 linear feet or 35 cubic feet trigger removal by a registered contractor. Most single-family homes are exempt.](https://aes.multisites.ai/guides/missouri-demolition-and-renovation-asbestos-rules) - [City of St. Louis asbestos abatement and demolition: how to fileIn the City of St. Louis, the Department of Health's Air Pollution Control Program handles asbestos and demolition notifications for the state. You report each project on the STL City Permits website and pay a fee. As of October 2026, the abatement notification fee is $100 and the demolition notification fee is $100.](https://aes.multisites.ai/blog/st-louis-city-asbestos-abatement-permit) - [Demolition in Missouri, From Survey to Debris: Every Step in OrderA Missouri demolition starts with a survey for asbestos, lead and mold, not with equipment. Next come notices to DNR or the city, utility disconnects and abatement. Only then does teardown begin, followed by salvage sorting and hauling debris to a regulated landfill. Each step protects the next one.](https://aes.multisites.ai/guides/demolition-from-survey-to-debris) - [Using an MBE Contractor on Missouri Public Work: What Owners and Primes Should KnowIn Missouri, a Minority Business Enterprise (MBE) is at least 51% owned and controlled by one or more minority persons. The state's Office of Equal Opportunity certifies MBEs and keeps a public directory. Prime contractors and agencies use it to find MBE subcontractors and to report participation on public work.](https://aes.multisites.ai/guides/mbe-contractors-on-missouri-projects) - [Asbestos in older St. Louis homes: where it hides and what to doAsbestos can hide in floor tile, floor adhesive, siding, roof shingles, textured walls, pipe wrap, furnace parts and attic insulation. About 87% of St. Louis city housing units and 68% of St. Louis County units were built before 1980. The only way to know is a lab test from a certified inspector.](https://aes.multisites.ai/guides/asbestos-in-older-st-louis-homes) - [What drives asbestos removal costAsbestos removal cost depends mainly on how much material there is, where it sits, how hard it is to reach, and what testing, notice fees and disposal the job needs. Angi's 2026 national average is $2,250. AES publishes no asbestos prices and quotes each job after a survey.](https://aes.multisites.ai/guides/asbestos-removal-cost) ## Request your custom environmental remediation estimate Contact us for a free environmental remediation or restoration estimate and a personalized solution to your problems. [Request a Quote](https://aes.multisites.ai/contact)[(314) 865-2662](tel:+1-314-865-2662)