What to Check When Hiring a Demolition Company
Under the Basic Act on the Construction Industry, any demolition work involving structures valued at $1.5 million or more must be handled by a specialized demolition contractor holding a license for "Scaffolding Structure Demolition." We've compiled all the crucial information you need to ensure the entire process—from getting an estimate based on a site survey to handling waste disposal and filing paperwork with the local district office—goes off without a hitch.
How to Verify a Demolition Contractor's Qualifications and Licenses
If you hire an unlicensed company, you risk facing legal trouble under the Occupational Safety and Health Act, even if an accident happens during construction, and you could be hit with fines. The very first step before signing any contract is to cross-reference the contractor's business registration and the scope of work listed on their construction industry license to confirm their demolition license is valid.
- Check with the local government's construction division or the Korea Professional Construction Association to see if the license has been loaned out.
- Verify that they have their own crew capable of direct construction, not just subcontracting.
- Request proof of similar project completion certificates from the last three years.
- Confirm that the site manager holds the relevant national technical certifications.
By working with a legitimate company registered with the local government, you can significantly reduce the chance of disputes, such as delays or unexpected extra charges, by using the Standard Contract for Construction provided by the Ministry of Land, Infrastructure and Transport.
How Cost is Calculated Based on the Scope of Work
The final quote can vary wildly depending on the building's structure and the type of debris you have. The pricing for tearing down interior finishes is different from the pricing for dismantling the main structural frame. If you only agree on a price per square meter, you might end up with separate bills later for waste removal, so you absolutely must get a detailed breakdown by item.
| Category | Interior Demolition | Structural/Frame Demolition | Dedicated Waste Removal |
|---|---|---|---|
| Estimated Time | 1 to 3 days | 5 to 15 days | Same day or upon pickup |
| Average Cost | $100,000 - $150,000 per pyeong (approx.) | $250,000 - $400,000 per pyeong (approx.) | $300,000 - $500,000 per ton |
| Required Equipment | Hand breakers, cutting tools | Excavator, compactor | 2.5-ton to 5-ton dump truck |
Handling Permits and Administrative Procedures
Before you can even start demolition, you need to file for a demolition permit or notification with the local government, following the Building Management Act. You also need to put plans in place to prevent complaints from neighbors regarding noise and dust during construction. Reputable companies with solid experience can handle all these administrative steps as a package, which helps keep your project from getting bogged down by delays.
- Preparing the building demolition permit application and structural safety assessment report.
- Submitting the documents to the relevant district office seven days before the planned start date and getting them approved.
- Completing the installation of construction site barriers and dust screens.
- Issuing the waste disposal service contract and the electronic handover documents for the Allbaro System.
If you are restoring a commercial property, you must strictly follow the building management office's approval conditions and the allowed working hours to avoid neighborhood disputes.
Waste Disposal and Sorting Standards by Material Type
To cut down on disposal costs, you must strictly separate the waste—don't just throw everything into mixed waste bins. You need to separate materials like concrete, old lumber, and drywall. Under the Waste Management Act, if you generate over 5 tons, you are required to register as a business waste generator. Always get a receipt proving the waste was taken to a legally permitted disposal facility.
- Waste concrete and bricks can often be recycled as backfill or recycled aggregate, which lowers the disposal cost.
- Mixed waste containing old synthetic materials and wallpaper costs more to process—over 40% more per ton than regular trash.
- Any materials containing asbestos must be removed only after an inspection by an asbestos testing agency designated by the Ministry of Employment and Labor.
Just because you want to save money on disposal doesn't mean you can hire an unlicensed hauler. If you load waste onto an unauthorized vehicle, you, as the client, could face criminal charges, so always verify that the company is officially licensed.
Common Disputes with Demolition Contractors and How to Prevent Them
It's common for contractors to ask for extra payment mid-project, claiming they found broken pipes or unexpected structural elements. Be very clear about what is and isn't covered in the initial quote. It’s smart to ask for proof of their general liability insurance before work begins, just in case any damage occurs during demolition.
- For any extra work that pops up, insist on a written agreement instead of just a verbal agreement.
- Hold off on paying the final balance until the site inspection is complete and you have received the official waste disposal confirmation.
- Include a specific clause in the contract stating that they are responsible for restoring any damage made to common areas, like elevators or floors.
To effectively protect yourself against losses from construction delays, make sure to detail the penalty for delays in the special conditions section of your contract.
Frequently Asked Questions About Hiring Demolition Contractors
What if the contractor asks for extra money during demolition that wasn't in the quote?
You are not obligated to pay extra if the reason isn't due to objectively unpredictable factors, like rebar cutting or removing hidden structures that weren't listed in the estimate. To prevent these kinds of disputes down the line, you must agree on a written standard for any additional charges when you sign the contract.
When should I shut off the electricity and water when vacating a commercial space or office?
You need to keep the electricity and water on until the demolition work is underway because they are necessary for things like using oxygen cutters or spraying dust suppressants. The right procedure is to contact the power company (KEPCO) and the water utility after the actual dismantling work is completely finished to officially terminate the service or change the account name.
What is the proper use for the waste disposal confirmation document?
The waste disposal confirmation document is a legal record you must provide if the local government or an agency under the Ministry of Environment investigates illegal dumping. As a rule, you should keep this document for at least three years after the job is done to cover tax documentation and any administrative actions.
To avoid financial losses during the construction process, make sure to have the contractor conduct at least two site measurements and carefully compare every detail in the estimate before you sign anything.