How to Hire and Vet a Korean Interior Contractor (And Avoid Getting Burned)
Hiring an interior contractor (업체, eopche) in Korea can feel like a leap of faith. You hand over a deposit, the crew tears your apartment apart, and then you hope the work matches the quote. Most jobs go fine. But the ones that go bad go very bad: half-finished bathrooms, vanished deposits, and "extra cost" demands that double your budget mid-project.
Hiring an interior contractor (업체, eopche) in Korea can feel like a leap of faith. You hand over a deposit, the crew tears your apartment apart, and then you hope the work matches the quote. Most jobs go fine. But the ones that go bad go very bad: half-finished bathrooms, vanished deposits, and "extra cost" demands that double your budget mid-project.
This guide walks you through how to find a contractor, how to compare quotes, the exact red flags that signal a scam, and what your contract must protect. It pulls from Korea's standard contract rules, the official contractor registry, and the consumer-protection systems built into platforms like Ohouse (오늘의집).
Quick Answer: Hiring a Korean Interior Contractor
- Verify registration first. Any real interior firm doing structural or 실내건축 (interior construction) work should be a registered construction business. You can look up registered companies on KISCON, Korea's construction-industry information system (KISCON). No registration plus a too-good price is the single biggest red flag.
- Get 3 to 5 written quotes and compare them line by line — labor, materials, schedule, and A/S (after-service) period. Korea's Fair Trade Commission publishes a standard interior/window-construction contract template you can demand (FTC, 2019).
- Use a platform with a guarantee if you're nervous. Ohouse's 시공책임보장 (Construction Responsibility Guarantee) covers defects and delays through an electronic standard contract, and the platform mediates disputes (Seoul Economic Daily, 2023).
- Never sign a contract that lowballs the price on paper. A contractor who writes a lower number than you actually paid is setting you up to lose any future defect or damages claim (Ohouse advice, 2023).
This article is general information, not legal advice. For a specific dispute, contact the Korea Consumer Agency (한국소비자원) or a licensed attorney.
What Counts as an "업체" — And Why That Matters
In Korea, "인테리어" covers a huge range of work. On one end you have light cosmetic jobs: wallpaper, flooring, painting, a new sink. On the other end you have full renovations (올수리 / "all-repair") that move walls, redo plumbing, and replace the whole kitchen and bathroom.
The bigger the job, the more it matters who you hire. A one-room wallpaper swap can be done by a small crew or even yourself. But a full kitchen-and-bath gut job touches waterproofing, electrical, and gas. Mistakes there cause leaks into the unit below you — and that's your liability.
This is where the word 업체 splits into two groups:
| Type | Korean term | What they do | Registration needed? |
|---|---|---|---|
| Registered construction firm | 실내건축공사업 등록업체 | Full renovations, structural, large jobs | Yes — registered under the Framework Act on the Construction Industry |
| Small independent / freelance | 동네 인테리어, 1인 업체 | Wallpaper, flooring, partial work | Often unregistered for small jobs |
| Platform-matched contractor | 플랫폼 매칭 업체 | Varies; vetted by the platform | Platform checks registration |
The Framework Act on the Construction Industry requires firms taking on real interior construction (실내건축공사업) to register, and registration data is searchable. Korea's official tool for this is the Construction Industry Knowledge Information System (KISCON) — 건설산업지식정보시스템 — which lets anyone look up a registered company's status, work history, and credit standing (KISCON).
So the first question isn't "do I like their portfolio?" It's "are they real?"
How Do I Find a Korean Interior Contractor?
You have three main paths, and most people use a mix.
1. Platforms. This is how the majority of Koreans start now. The big three:
| Platform | Korean name | Model | Best for |
|---|---|---|---|
| Ohouse | 오늘의집 | Community + commerce + contractor matching | Inspiration, then matched quotes (Ohouse Experts) |
| Zipdoc | 집닥 | Comparison-quote brokerage | Getting multiple quotes fast (Zipdoc) |
| Soomgo | 숨고 | Pro-matching marketplace | Smaller / partial jobs (Soomgo) |
Ohouse started as an interior-inspiration community and expanded into matching customers with vetted contractors. Zipdoc and Soomgo began as comparison-quote and pro-matching services. Over time their lanes have blurred — all three now offer a version of community, quotes, and managed construction.
2. Local neighborhood shops (동네 인테리어). These are the storefront interior offices you see near apartment complexes. They know the building, the management office rules, and the local supply chain. The trade-off: less paperwork, fewer guarantees, and quality that swings hard from shop to shop.
3. Referrals. Ask neighbors who recently renovated, or check your apartment complex's online café (카페). A crew that just finished a unit in your building already knows the elevator rules, the noise hours, and the layout.
A practical move: use a platform to gather quotes and get a price baseline, then cross-check any contractor you like against KISCON and the platform's review history before you commit.
How Many Quotes Should I Get — And How Do I Compare Them?
Get three to five written quotes. One quote tells you nothing. Three quotes reveal the real market range and expose the outliers — both the suspiciously cheap and the padded-high.
When you compare, don't look at the bottom-line total first. Look at what's inside it. Cheap quotes are usually cheap because they left things out, and the missing items reappear later as "additional costs."
Here's a comparison checklist to run on every quote:
| Line item | What to confirm | Why it matters |
|---|---|---|
| Labor (인건비) | Broken out by trade, with crew days | Hidden labor is the #1 budget-buster |
| Materials (자재비) | Exact brand, model, grade, and quantity | "Tile included" can mean the cheapest tile |
| Demolition & disposal (철거/폐기물) | Listed separately, who pays building fees | Often "forgotten," then billed extra |
| Schedule (공사기간) | Start date, end date, milestones | Anchors your delay-penalty clause |
| Payment schedule | Deposit / interim / final split | Never pay it all up front |
| A/S period (하자보수 기간) | How long, what's covered | Your safety net after move-in |
A real warning sign is the quote that's far below everyone else's. Ohouse's own contractor advice flags the "lowest-price" trap directly: a contractor who underbids to win the job then claws the money back through mid-project add-ons, betting you can't walk away once your apartment is half-demolished (Ohouse advice, 2023).
Demand that materials be specified by brand and model number, not category. "LX Hausys flooring, model Z-Series" is verifiable. "Premium flooring" is whatever the contractor decides to install.
What Are the Red Flags of an Interior Scam?
Korean interior scams follow recognizable patterns. If you can name them, you can spot them. Here are the ones that show up again and again.
| Red flag | What it looks like | What to do |
|---|---|---|
| Lowball-then-add-on | Wins on price, then "surprise" costs appear after demolition | Get a fixed-scope contract; cap extras in writing |
| Cash-only / no contract | Pushes a verbal deal or paper note over a real contract | Refuse. No written contract, no job |
| Underreported contract price | Writes a lower number than you paid | Refuse — it destroys your damages claim |
| Huge upfront deposit | Wants 50%+ before work starts | Tie payments to milestones |
| No registration | Can't be found on KISCON for a big job | Verify before signing |
| Thin or fake reviews | Almost no work history or suspiciously perfect reviews | Cross-check across platforms |
| Pressure to sign "today" | "This price is only good now" | Walk away from urgency |
Two of these deserve a closer look.
The underreported contract price. Some contractors offer to write a lower amount on the contract, dangling "free extras" as the reason. This sounds like a discount. It isn't. If the work later fails and you sue for damages, your claim is capped by the contract amount on paper — so a deliberately low figure quietly strips away your legal leverage. Ohouse warns customers about exactly this move (Ohouse advice, 2023).
The deposit grab. A trustworthy contractor ties payment to progress: a deposit, an interim payment when a milestone is hit, and the balance only after you inspect the finished work. A contractor demanding most or all of the money before the first day on site is the classic setup for a vanishing act.
How Do I Verify a Contractor Is Legitimate?
Vetting is three checks. Do all three.
Check 1: Registration (KISCON). For any substantial renovation, confirm the firm is a registered construction business. The Construction Industry Knowledge Information System (KISCON) lets you search registered companies and pull up their status and history (KISCON). Ohouse even publishes a customer guide on how to use KISCON to look up a contractor's standing (Ohouse customer notice). If a firm pitching a six-figure-won renovation can't be found there, stop.
Check 2: Track record. Look at completed projects, not just a glossy portfolio. On platforms, read the reviews with photos and the dates. A real contractor has a paper trail of finished jobs. Be skeptical of a brand-new profile with a wall of five-star reviews and no detail.
Check 3: Cross-reference. Search the company name and the representative's name. Check more than one platform. Check your apartment complex café. A contractor who's clean on every channel is a much safer bet than one who only exists on a single page you can't verify.
Here's a quick vetting scorecard:
| Vetting step | Source | Pass condition |
|---|---|---|
| Business registration | KISCON | Listed and active |
| Construction history | KISCON / platform | Real completed jobs |
| Reviews | Ohouse, Zipdoc, Soomgo | Detailed, dated, photo-backed |
| Standard contract offered | FTC template | Willing to use it |
| Name search | Web + complex café | No unresolved complaints |
What Should the Contract Protect?
Never start work on a verbal agreement or a hand-scribbled note. The contract is the only thing that protects you when something goes wrong.
Korea's Fair Trade Commission published a standard interior/window-construction contract (실내건축·창호 공사 표준계약서) specifically to fix the imbalance between homeowners and contractors. The standard form strips out the "poison clauses" that favor one side and forces both parties to put the core terms in writing: scope, schedule, payment, and liability (FTC, 2019). You can ask any contractor to use this template, and a reluctance to do so is itself a signal.
At minimum, your contract must spell out:
| Clause | What it must state |
|---|---|
| Scope of work (공사 범위) | Exactly what's included — and what's not |
| Materials | Brand, model, grade, quantity for each item |
| Total price (공사 금액) | The real, full amount — never underreported |
| Payment schedule | Deposit / interim / final, tied to milestones |
| Schedule (공사 기간) | Start, end, and a penalty for delay |
| Defect liability (하자담보책임) | A/S period and what it covers |
| Dispute handling | How problems get resolved |
On the defect-liability (하자담보) period: under the Framework Act on the Construction Industry, defect-liability periods are set by work type. Interior finishing work carries shorter periods (one year), while waterproofing and structural work carry longer ones — Korea's official legal-information service publishes the per-trade table in Annex 4 of the Act's Enforcement Decree (Korea National Law Information Center, 건설산업기본법 시행령 별표 4). Make sure the A/S period in your contract is at least as protective as what the law provides, and that it names which defects are covered.
Don't accept vague language. "Standard finishes" and "as discussed" are how disputes start. Every material, every date, every won should be on the page.
Should I Use a Platform Guarantee Like Ohouse?
If the idea of a contractor disappearing keeps you up at night, a platform guarantee is worth a serious look.
Ohouse launched 시공책임보장 (Construction Responsibility Guarantee) in 2023 to tackle exactly the harms in this guide. When a matched contractor causes a defect during construction, or the job runs past the contracted finish date, Ohouse steps in to resolve it — at the platform's cost — rather than leaving you to chase the contractor alone (Seoul Economic Daily, 2023).
Three pieces make it work:
- An electronic standard contract (안심전자계약). Built on the FTC's standard interior/window-construction contract, it removes poison clauses and locks down schedule, per-stage cost, and clear payment dates in a written, mutual agreement (Ohouse story, 2023).
- Dispute mediation. A dedicated Ohouse team mediates when defects or delays arise, instead of you negotiating one-on-one with the crew (Ohouse story, 2023).
- Delay compensation. When a delay causes you real loss — extra lodging, storage — Ohouse provides cash compensation per the program's terms (Digital Daily, 2023).
The catch — and it's a big one — is that the guarantee only applies if you actually use the platform's standard electronic contract. Ohouse warns that some contractors try to pull customers into a direct contract or a paper contract outside the platform. If you sign off-platform, you lose the guarantee, even though you found the contractor through Ohouse (Ohouse advice, 2023). So if you choose a guaranteed contractor, keep the whole deal inside the platform's contract system.
What If I Already Got Burned?
If a job has gone wrong, you still have options.
Start with the contract and a written record. Photograph the defects, save every message, and put your complaint to the contractor in writing with a deadline to fix it.
If they won't cooperate, escalate to the Korea Consumer Agency (한국소비자원 / KCA). The KCA was established under Korea's consumer-protection law to handle consumer damage and dispute mediation, and it provides a path to mediation when direct negotiation fails (Korea Consumer Agency). Korea's consumer-protection framework lets consumers seek mediation through the KCA or a recognized consumer organization when a dispute can't be settled directly (ICLG Consumer Protection Korea, 2026).
If you went through a platform with a guarantee, open a case with that platform's support team first — that's the entire point of the guarantee.
This is general information. For a serious loss, talk to a licensed Korean attorney about your specific contract and facts.
Frequently Asked Questions
1. Do I really need to check KISCON for a small wallpaper job? Not always. KISCON registration matters most for substantial renovations — anything structural, or that touches plumbing, gas, electrical, or waterproofing. For light cosmetic work, reviews and referrals carry more weight. But the moment a job gets big or expensive, verify registration on KISCON before you sign.
2. How much deposit is normal for a Korean interior contractor? There's no single legal figure, but the safe principle is to tie payments to progress: a deposit, an interim payment at a milestone, and the balance only after you inspect the finished work. Be very wary of any contractor demanding most or all of the money up front — that's a classic scam setup.
3. Why would a contractor want to write a lower price on the contract? It looks like a discount but it's a trap. If the work later fails and you pursue damages, your claim is limited by the figure on the contract — so a deliberately low number quietly strips your legal protection. Ohouse explicitly warns customers against this (Ohouse advice, 2023). Always put the real, full price in writing.
4. What's the difference between Ohouse, Zipdoc, and Soomgo? Ohouse grew from an interior-inspiration community into contractor matching with a construction guarantee. Zipdoc is built around comparison quotes and managed construction. Soomgo is a broader pro-matching marketplace that's handy for smaller or partial jobs. Many people use more than one to gather quotes.
5. Is the FTC standard contract mandatory? No, it's not legally required — but it's strongly recommended and any reputable contractor should be willing to use it. Korea's Fair Trade Commission created the standard interior/window-construction contract to remove one-sided clauses and force the key terms into writing (FTC, 2019). A contractor who refuses to use a fair, standard contract is telling you something.
Related Reading
- Understanding Ohouse: Korea's Biggest Interior Inspiration Platform
- Korean Apartment Culture: Jeonse, Move-In Traditions, and Interior
- Korean Self-Interior (Sel-Injeolia): DIY Home Transformation Guide
- Korean Jeonse Apartment Interior Rules and Restrictions
- How Koreans Prepare a New Apartment Before Moving In
Disclaimer: This article is for general educational purposes and is not legal advice. Construction registration rules, contract law, and consumer-protection procedures in Korea change over time and depend on your specific situation. Verify current requirements with KISCON, the Fair Trade Commission, or the Korea Consumer Agency, and consult a licensed Korean attorney for any actual dispute.