- What the Certified Demolition Supervisor Credential Is
- The Requirements at a Glance
- The Five-in-Seven Experience Rule
- Required Training and Certifications
- Documenting Your Eligibility
- Registration Mechanics and Fees
- What You Are Qualifying to Sit
- Attempt Limits and Eligibility Windows
- Closing Gaps Before You Apply
- Keeping the Credential Active
- Frequently Asked Questions
- The Certified Demolition Supervisor credential is issued through the National Demolition Association (NDA), with testing delivered by Meazure Learning.
- You need five hands-on demolition years within the last seven, not five years of any construction work.
- Required training includes eight-hour fall protection, OSHA 30, eight-hour asbestos/HAZWOPER awareness, and current CPR/First Aid.
- The initial fee is $595 for NDA members and $755 for non-members; a retake costs $445.
What the Certified Demolition Supervisor Credential Is
The Certified Demolition Supervisor (CDS) credential is a professional certification for people who run demolition work in the field. It is administered through the National Demolition Association (NDA), the trade body for the demolition industry, and the exam itself is delivered through Meazure Learning by live remote proctoring or at test centers. If you are still orienting yourself, the explainers on what CDS certification is and what CDS is cover the basics before you dig into eligibility.
This article focuses on a single question: do you qualify, and how do you prove it? Unlike many entry-level credentials, this one is built around verified field experience and a stack of safety and hazardous-materials training. You cannot walk in off a classroom course. The requirements are designed to filter for people who have actually worked on demolition sites and have the safety credentials that employers, insurers, and regulators expect of someone supervising that work.
The Requirements at a Glance
The issuer's badge pathway rests on five pillars. Here is the full list in one place, followed by detail on each.
| Requirement | What It Means |
|---|---|
| Hands-on demolition experience | Five years of hands-on demolition work within the last seven years |
| Fall protection / prevention | Eight-hour training course |
| OSHA 30 | OSHA 30-hour training credential |
| Asbestos / HAZWOPER awareness | Eight-hour awareness-level training |
| CPR / First Aid | Current (unexpired) certification |
The Five-in-Seven Experience Rule
The most distinctive requirement is the experience rule: five hands-on demolition years in the last seven. Three words in that phrase matter.
"Hands-on"
The credential is aimed at working demolition professionals. Time spent purely in an estimating office, in sales, or in a general contracting role with no demolition scope is unlikely to be the kind of experience the rule contemplates. Think operating, rigging, selective demolition, abatement coordination, equipment work, site supervision, and similar field activity. If your role was mixed, be ready to describe the portion that was genuinely demolition work.
"Demolition"
General construction experience does not automatically substitute. A carpenter with ten years of framing has a long résumé but may not meet this rule. Candidates coming from adjacent trades such as abatement, excavation, or heavy civil should be prepared to show where their work involved demolition activity specifically.
"In the last seven"
This is a rolling recency window. Someone who spent six years in demolition a decade ago and then moved into another field may not satisfy the rule, while someone with five years scattered across the most recent seven could. Count backward from your application date, not from the start of your career.
Key Takeaway
Build a year-by-year employment timeline for the past seven years before you start the process. Mark which years were hands-on demolition. If you cannot clearly count five, you have found your gap early, when it is cheap to fix.
Required Training and Certifications
The four training prerequisites reflect the exam's heavy emphasis on safety and environmental control. Not coincidentally, Safety is the largest content area, carrying roughly 32% of the posted outline.
Eight-Hour Fall Protection / Prevention Training
Falls are a defining hazard on demolition sites, where floors, edges, and structural members are being removed while people work around them.
- Choose a course that explicitly covers fall protection or fall prevention at the eight-hour level
- Keep the completion certificate; you will likely need to document it
- Expect the topic to resurface on the exam under site safety
OSHA 30
The 30-hour OSHA course is the broader safety credential in the stack. For many working supervisors it is already in hand.
- Make sure your card or certificate is legible and retrievable
- If yours is old, check whether the issuer will accept it as-is
Eight-Hour Asbestos / HAZWOPER Awareness
Demolition routinely disturbs legacy materials. This requirement ties directly to the Environmental content area, which makes up about 16% of the outline.
- The requirement is awareness-level, eight hours
- Confirm that your specific course title matches what the issuer accepts
Current CPR / First Aid
This is the one prerequisite that expires on a short cycle, so timing matters.
- Verify the expiration date on your card before you apply
- If it will lapse before your exam window, renew first
Documenting Your Eligibility
Meeting the requirements and proving you meet them are two separate tasks. Because the exact application documentation can change, confirm current expectations with the NDA, but a sensible preparation checklist looks like this:
- Employment history: company names, dates, titles, and a plain description of demolition duties for each role in your seven-year window.
- Verifiers: the name of a supervisor, owner, or colleague who can confirm your work. Contact them early, since people change jobs and numbers.
- Training records: certificates or cards for fall protection, OSHA 30, asbestos/HAZWOPER awareness, and CPR/First Aid, saved as clear scans.
- Dates: completion and expiration dates for each credential, in one summary sheet.
Self-employed and owner-operators should plan extra time here. Without an HR department to confirm your history, you may need project records, contracts, permits, or client references to demonstrate that your years were hands-on demolition.
Registration Mechanics and Fees
The NDA lists different pricing for members and non-members, and the gap is meaningful enough to factor into your decision.
| Fee | Amount |
|---|---|
| Initial exam fee, NDA member | $595 |
| Initial exam fee, non-member | $755 |
| Retake fee | $445 |
The difference between the member and non-member initial fee is $160. Whether NDA membership pays for itself depends on the membership cost and what else you would use it for, so compare the two before you register. For a fuller view that includes training courses, study materials, and renewal, see the complete CDS certification cost breakdown. If you are weighing whether the spend is justified, the analysis in Is the CDS certification worth it? is a useful companion.
What You Are Qualifying to Sit
Eligibility only matters if you know what it leads to. The exam consists of 110 four-option multiple-choice questions in 2 hours 30 minutes. It is delivered by Meazure Learning through live remote proctoring or at test centers, so you can choose the setting that fits your situation. The number of scored versus unscored questions has not been verified, and the numerical passing cut is not publicly verified. The exam uses a criterion-referenced scaled standard. For what is and is not known, see CDS passing score explained.
The posted outline dates to April 11, 2023 and divides the content into five approximate weights totaling 100%:
| Domain | Approximate Weight |
|---|---|
| Domain 1: SAFETY - Maintain a Safe Job Site | 32% |
| Domain 2: ENVIRONMENTAL - Ensure Environmental Stewardship on Every Project | 16% |
| Domain 3: OPERATIONAL METHODOLOGY - Ensure Effective Functioning of the Project | 19% |
| Domain 4: PROJECT MANAGEMENT - Ensure effective administrative set up and standard operating procedures | 15% |
| Domain 5: PEOPLE MANAGEMENT - Effective guidance of team members and the culture of the project | 18% |
Notice how the prerequisites map onto this outline. Fall protection and OSHA 30 feed Safety. Asbestos/HAZWOPER awareness feeds Environmental. Your five years of field work should feed Operational Methodology. The two domains the prerequisites do not directly cover, Project Management and People Management, are where field-strong candidates most often need deliberate study. The complete guide to all five CDS content areas walks through each in detail. Whether open-book or calculator use is permitted has not been verified, so confirm exam-day rules before your window.
Attempt Limits and Eligibility Windows
The retake policy is part of the qualification picture, because it shapes how you plan.
- You have three attempts within a one-year eligibility period.
- Those attempts cannot be used within the same testing window, so a failed attempt means waiting for the next window.
- Further restrictions apply after three failures.
- Official results arrive approximately six to eight weeks after the window closes.
That last point deserves attention. Because results are not instant, a failed first attempt may not even be known before a later window is approaching. Plan your registration so you can absorb one slower cycle without letting your eligibility year or your CPR/First Aid card lapse. Scheduling specifics live in the CDS exam dates and testing windows guide.
Key Takeaway
Treat the first attempt as the one you intend to pass, but build your calendar as if you might use two. The one-year eligibility period and the window-based retake rule leave little slack for a rushed second try.
Closing Gaps Before You Apply
Most people reading a requirements article are not sure they qualify yet. Here is how to think about the common gaps.
You have the experience but are missing a course
This is the easiest gap to close. Book the missing training, finish it, and file the certificate. The only trap is timing: make sure everything is complete and unexpired when you apply, not merely scheduled.
You are close on the five-in-seven rule
If you are a year short, there is no workaround to invent. Use the time to complete every training prerequisite and to start studying, so you are ready the moment you qualify. Candidates who qualify on experience while still building knowledge in the management domains tend to benefit from starting early.
Your experience is mixed or supervisory
Many supervisors split their time between field work and administration. Write your history to show the demolition scope clearly. If a role included both, describe the demolition responsibilities concretely: crews led, structures taken down, methods used, hazards managed.
Your experience comes from a related trade
Abatement, excavation, and heavy equipment backgrounds overlap with demolition, but overlap is not equivalence. Be honest with yourself about how many of your years were truly demolition, and if in doubt, ask the NDA before you pay.
A light study sequence tied to the requirements
Once you qualify, sequence your preparation around where your background is thinnest. A field veteran might spend early weeks on Project Management and People Management, then circle back to Safety and Environmental to lock in regulatory detail. Someone from an abatement background might do the reverse. The CDS study guide lays out a full plan, and the CDS difficulty guide helps you judge how much preparation time to budget. An official CDS study guide was announced in 2026, so check what the NDA currently offers. Once you are ready to test yourself, the CDS practice tests let you see how your knowledge holds up across all five domains.
Keeping the Credential Active
Qualifying is the first step; keeping the credential is the second. The certification carries three-year validity and renews through continuing education. The numerical continuing-education total and the renewal fee have not been verified, so confirm both with the NDA rather than relying on secondhand figures. Because renewal depends on continuing education, it is worth keeping your training records organized from the start; the same habit that helps you apply will help you renew.
For readers thinking about the career side, the CDS jobs overview and the CDS salary guide cover who hires certified supervisors and how the credential relates to earnings. If you are comparing it against other options, take care that you are looking at the demolition credential specifically, since the acronym is shared by unrelated certifications. The pages on what CDS stands for clear up that confusion.
Frequently Asked Questions
The issuer's badge pathway calls for five hands-on demolition years within the last seven. The experience must be recent and specifically demolition work, so general construction years may not count toward the total.
The listed prerequisites are an eight-hour fall protection/prevention course, OSHA 30, eight-hour asbestos/HAZWOPER awareness training, and a current CPR/First Aid certification. Confirm current application documentation with the NDA before you submit.
The initial fee is $595 for NDA members and $755 for non-members. A retake costs $445. Prerequisite courses are a separate expense and should be budgeted on top of the exam fee.
You have three attempts within a one-year eligibility period, and you cannot use more than one in the same testing window. Further restrictions apply after three failures, so plan your first attempt carefully.
It is valid for three years and renews through continuing education. The exact continuing-education total and renewal fee are not verified here, so check the NDA for current figures.