Field Notes
Practical details that don't fit on a calculator page. Pitfalls and nuances learned from daily use.
- 2026-05-30~7 min read
Korean Pyeong, Explained — Why 84㎡ is Called 25-Pyeong
Why Korean real estate uses pyeong alongside m², how 84㎡ maps to 25-pyeong, and what exclusive vs supply vs contract area really mean.
Read - 2026-05-30~6 min read
Korean Business Registration Number — What the Checksum Tells You
The 1-3-7 weighted checksum that catches fake or mistyped Korean business numbers before you sign or wire money.
Read - 2026-05-23~8 min read
Korean Mortgage: 30-year vs 15-year — Is the longer term really a loss?
Total interest is much lower for 15-year. Yet most people choose 30-year. Once you factor cash flow, inflation, and reinvestment, the math changes.
Read - 2026-05-23~7 min read
5 most common confusions in Korean progressive income tax
“Crossing a bracket means you earned less in the end” and other myths — debunked with actual numbers.
Read - 2026-05-23~6 min read
Got a Korean rent increase over 5%? 7 things to do immediately
If your Korean landlord proposes a 6% renewal increase, here are the 7 steps a tenant should take, in order.
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