Old business cards, contracts, and documents often carry lot number (jibun) addresses—the older system based on land parcel numbers. Since mail, delivery, and navigation now run on road addresses, knowing how to convert between the two is genuinely useful.
Why They Look So Different
The two systems use completely different reference points. Lot numbers come from land registry parcel IDs; road addresses come from the physical layout of roads and building positions. The same building can have wildly different-looking addresses in each system:
- Lot number: 서울 중구 태평로1가 31
- Road address: 서울 중구 세종대로 110
- (Same building — Government Complex-Seoul)
How to Convert: Using This Service
- Enter the lot number address in the home search box. Example: 역삼동 737
- The result card shows the road address and English address.
- Use the copy button to copy the road address directly.
Five Real Conversion Examples
| Lot number (jibun) | Road address |
|---|---|
| Jung-gu, Seoul, Taepyeongno 1-ga 31 | 110, Sejong-daero, Jung-gu, Seoul |
| Yeoksam-dong 737, Gangnam-gu, Seoul | Near 152, Teheran-ro, Gangnam-gu, Seoul |
| Sejongno 1, Jongno-gu, Seoul | 161, Sajik-ro, Jongno-gu, Seoul |
| Samseong-dong 159, Gangnam-gu, Seoul | Near 513, Yeongdong-daero, Gangnam-gu, Seoul |
| Jeongja-dong 178, Bundang-gu, Seongnam | Near 166, Jeongjail-ro, Bundang-gu, Seongnam-si |
Common Search Mistakes and Fixes
- Searching only the neighborhood name: Entering just "Yeoksam-dong" returns all addresses in that neighborhood. Add the lot number ("Yeoksam-dong 737") for precise results.
- Missing the district name: The same neighborhood name can exist in multiple cities across Korea. Include the district (e.g., Gangnam-gu Yeoksam-dong 737) to narrow results.
- Apartment complexes: Search by apartment complex name (e.g., Raemian Yeoksam) for the road address, then add the building and unit number to Address Line 2 of your shipping form.
Real-World Scenarios
Here are situations where lot-to-road conversion is commonly needed:
- Old business cards: Pre-2014 business cards often carry lot number addresses. Convert them to road addresses for current navigation.
- Property documents: Real estate contracts and registry documents use lot numbers. When you need the delivery or postal address for the same location, convert to road address here.
- Inherited addresses: Family records, old photos with handwritten addresses — convert these historical lot addresses to find the modern equivalent.
Things to Keep in Mind
- One lot number area may contain multiple buildings, so search results may show several matches.
- To identify the exact building, cross-reference with the building name, floor, or unit number.
- For apartment complexes, searching by complex name often gives more precise results.
For a deeper comparison of the two systems, see Road Address vs Lot Number.