Check 01 · Fair price
Is this rent actually fair?
Compare any listing to what people really paid nearby, drawn from official transaction records — so you don't overpay for being new here.
English-first housing checks · Seoul
Know what a Korean home is really worth — before you sign.
Ondol checks any rent or deposit against Korea's official transaction records, flags deposit-scam risk, and shows the support you can actually use. Every figure is sourced and dated.
No account needed · Information, not legal advice
VERIFIED
Verification recordSample
Seogyo-dong, Mapo-gu
Officetel · 33㎡ · Monthly rent
Quoted
₩750,000
Official median
₩790,000
₩680kmedian ₩790k₩910k
Within fair range−5% vs median
SOURCE — Ministry of Land, Infrastructure & Transport
Real Transaction Price System
VERIFIED 2026·06·28 · REC-24-0428
Built on Korea's official sources.
Ministry of Land
Official real-transaction prices — public government records, not estimates.
Registry & lease
What the property registry and your contract really say, in plain English.
1345 helpline
Korea's official multilingual support line for foreign residents.
100%
Figures sourced from official records
0
Words of Korean needed to start
3
Checks in one place: price, risk, support
Free
To run your first check
What we check
Three checks that turn a confusing market into a decision you can defend.
Why Ondol exists
Check 02 · Support you can use
The help you're actually eligible for
Foreigners are often quietly left out of public-housing relief. Ondol shows the programs open to you — and the alternatives when a program shuts you out.
Legal aid · deposit-loan routes · victim support center
Coming soon
Check 03 · Deposit safety
Is this deposit safe to hand over?
Get an estimated risk read before you sign, with the warning signs of 깡통전세 (empty-shell jeonse) explained in plain English.
Median rent · Seogyo-dong
₩790,000 verified 2026·06·28
The record, up close
See what a neighborhood really costs.
Every number on Ondol comes from official transaction records — not an agent's estimate. See what people actually paid, block by block, with the date it was last verified.
- The verified median for the exact area and unit type
- A clear flag when a listing sits above the local record
- Plain-English notes on what the neighborhood is really like
How it works
A clear answer in three steps.
No Korean required. No agent pressure.
01
Enter the place
Tell us the neighborhood, size, and the deposit or rent you were quoted.
02
We match the records
Ondol pulls official Ministry of Land transactions for the same area and unit type.
03
Read the result
A fair-price verdict, risk signals, and the support open to you — in English, with sources.
How we keep this honest
Trust is a method, not a badge.
When money and a signature are on the line, you deserve to see how the information was made.
Sourced, not guessed
Every figure links back to the public record it came from. If we can't cite it, we don't show it.
Dated
Each number shows when it was last verified, because the market moves and old data misleads.
Estimates stay labeled
Risk is shown as an estimate, never a verdict. Ondol is information — not legal advice.
English-first
Written for newcomers in plain English, not machine-translated bureaucrat-speak.
Built for people settling into Korea:
International studentsExpat workersDigital nomadsPeople burned by jeonse fraud
Start with one free price check.
Built on Korea's official transaction records. No account, no fluent Korean required.
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