Agency: Office of Management and Budget, Division of Facilities Management (DFM) Asbestos Office (certification); DNREC Division of Air Quality (inspections, notifications, enforcement)
Official program page
Inspection before renovation or demolition
DNREC says a thorough inspection for asbestos-containing building materials must be conducted before any building renovation or demolition project, by a person licensed by Delaware to identify ACM and employed by a professional service firm licensed by OMB’s Division of Facilities Management. If asbestos will be disturbed it must be properly removed, and all asbestos must be removed before demolition. Source: DNREC Building Renovation and Demolition.
Who takes the samples
DFM’s FAQ says you do not need a Delaware asbestos license to take a bulk sample, but you must have an EPA-approved building inspector training certificate and be employed by a Delaware Asbestos Professional Services Firm. Project Designers, Management Planners and Building Inspectors show their EPA training certificate; Project Monitors must be licensed. Source: DFM Asbestos FAQ.
Project monitors and air clearance
Under 19 DE Admin. Code 4103 §16.1, no professional service firm or its employees may perform project monitoring, air sampling, inspections, project management and final air clearances without a valid DFM Asbestos Project Monitor certification. Certified Project Monitors can issue a written stop-work order for violations (§16.3). Each professional service firm must employ at least one active Delaware Project Monitor (§13.2.5). Source: 19 DE Admin. Code 4103.
Contractors: Class A and Class B
Delaware certifies Class “A” (unlimited) abatement contractors and Class “B” (limited) contractors — tradespeople such as roofers, siders, plumbers or HVAC mechanics whose main business is not abatement. Class A, Class B and Professional Service Firm applications are reviewed annually. Sources: Regulation 4103, DFM Licensing Requirements.
Notification to DNREC
Owners or operators must notify DNREC electronically (Digital DNREC portal) at least ten working days before regulated asbestos renovations, and at least ten working days before any demolition — even if there is no asbestos. Notification is not required for renovations disturbing less than 260 linear feet, 160 square feet, or 35 cubic feet of regulated asbestos where non-regulated asbestos may not become friable. Source: DNREC.
Owner-occupied single-family homes
Regulation 4103 §5.1 requires certified contractors for public or private abatement projects “except for work in an owner-occupied single family dwelling performed by the owner of such dwelling.” Source: 19 DE Admin. Code 4103.
Find a certified firm
DFM publishes a Certified Asbestos Vendors List from its Asbestos Abatement Services page, and DNREC notes that lists of licensed inspectors and abatement contractors are maintained by DFM.
Need testing in Delaware? Tell us your ZIP and test type and we will match you with a licensed asbestos professional.
Get Matched With a Licensed Tester — FreeDelaware asbestos testing FAQ
Do I need an asbestos inspection before remodeling in Delaware?
DNREC states a thorough inspection for asbestos-containing building materials must be conducted prior to any building renovation or demolition project, by a Delaware-licensed person employed by a DFM-licensed professional service firm. Source: DNREC.
Who can do final air clearance in Delaware?
A DFM-certified Asbestos Project Monitor, under Regulation 4103 §16.1. Source: 19 DE Admin. Code 4103.
Is demolition notification needed if there's no asbestos?
Yes. DNREC requires electronic notification at least ten working days before the start of demolition, even if there is no asbestos. Source: DNREC.
Every fact above is taken from official state, city/county, or EPA pages fetched for this site (last checked November 2026). If a detail could not be verified, it was left out.
Testing guides
Delaware’s licensed Project Monitor handles air sampling and final clearance — our clearance guide explains what that step involves.