Seoul Real Estate Transactions – Apartment Sale & Rent Prices (서울 실거래가)

Official transaction prices for every Seoul property deal. This Actor pulls the Seoul Metropolitan Government's real-transaction database (서울시 부동산 실거래가 · 전월세가 정보) and returns clean, analysis-ready rows: contract date, district, dong, building/complex, type, area (m² & pyeong), floor, build year, price in KRW, price per pyeong, cancelled flag – and for rentals jeonse/wolse deposit, monthly rent, contract period and renewal info.

✅ Official government data (공공누리 제1유형 – commercial use allowed) · ✅ Sales and jeonse/wolse rents · ✅ Apartments, officetels, villas, houses · ✅ Prices converted from 만원 to real KRW · ✅ English district names

Use cases

• 🏙️ Apartment price tracking – daily new deals for Gangnam, Songpa, Mapo… or a specific complex (래미안, 헬리오시티, 은마).
• 📊 Market research & valuation models – price per pyeong by district, building age and floor.
• 🏠 Jeonse / wolse analysis – deposit-to-price ratios (전세가율), renewal-right usage, rent trends.
• 🧑‍💼 Proptech, brokers & investors – feed dashboards, Google Sheets, BI tools or AI agents via API.

How to get your free API key (2 minutes)

1. Sign in at data.seoul.go.kr (서울 열린데이터광장).
2. 인증키 신청 → 일반 인증키 → purpose e.g. "부동산 분석" → the key is issued instantly.
3. Paste it into Seoul Open Data API key. The key is stored as a secret input.

No key? Leave it empty – the Actor uses Seoul's official demo key sample (5 rows per query) so you can preview the output.

How much does it cost?

$0.001 per transaction → $1.00 per 1,000 records. No subscription. The Seoul API itself is free.

Run	Records	Cost
Demo (no key)	10	$0.01
Gangnam apartment sales, this year	~2,000	$2.00
All Seoul apartment sales, this year	~25,000	$25

Set Max cost per run in run options and the Actor stops cleanly at your budget.

Input example

{
  "apiKey": "YOUR_SEOUL_OPEN_DATA_KEY",
  "dealTypes": ["sale"],
  "districts": ["강남구", "Songpa"],
  "buildingTypes": ["apartment"],
  "contractDateFrom": "2026-09-01",
  "buildingNameContains": "",
  "maxItems": 5000
}

Output example

contractDate	district	dong	buildingName	type	areaM2	floor	priceKrw	KRW / pyeong
2026-10-02	강남구	대치동	대치현대	아파트	59.82	3	2,400,000,000	132,630,000
2026-10-07	영등포구	당산동5가	당산역해링턴타워	오피스텔	23.59	4	190,000,000	26,625,653

{
  "dealType": "rent",
  "contractDate": "2026-10-07",
  "district": "성동구",
  "districtEn": "Seongdong-gu",
  "dong": "행당동",
  "address": "서울특별시 성동구 행당동 344",
  "buildingName": "신동아",
  "buildingType": "아파트",
  "areaM2": 59.97,
  "areaPyeong": 18.1,
  "floor": 2,
  "rentType": "전세",
  "depositKrw": 447000000,
  "monthlyRentKrw": 0,
  "contractPeriod": "26.10~28.10",
  "newOrRenewal": "갱신",
  "previousDepositKrw": 330000000
}

FAQ

Is this legal to use commercially? Yes. The datasets are published by the Seoul Metropolitan Government under KOGL Type 1 (공공누리 제1유형): commercial use and modification are allowed with source attribution (see below).

Does it contain personal data? No names or unit numbers. Seoul already masks lot numbers for detached/multi-family houses.

Why "report year"? Seoul indexes deals by the year they were reported (접수연도). Late-December contracts can appear in the next year – add both years if needed.

Other Korean cities? This Actor covers Seoul. Nationwide MOLIT data is planned.

Source & attribution

• 출처: 서울특별시, 「서울시 부동산 실거래가 정보」(OA-21275) · 「서울시 부동산 전월세가 정보」(OA-21276), 서울 열린데이터광장 (data.seoul.go.kr), 공공누리 제1유형(출처표시).
• Data is fetched with your own API key via the official Open API. This Actor is not affiliated with or endorsed by the Seoul Metropolitan Government. Keep the attribution above when you republish the data.

한국어 안내

서울시 부동산 실거래가(매매)와 전월세가를 공식 Open API로 수집합니다. 자치구·건물유형(아파트/오피스텔/연립다세대/단독다가구)·계약일·단지명으로 필터링하고, 금액은 만원 → 원 단위로 변환, 평당가·평수까지 계산해 드립니다.

• 준비물: 서울 열린데이터광장 무료 인증키(본인 키 입력, 비밀 입력값으로 저장). 키가 없으면 데모 키(쿼리당 5건)로 미리보기.
• 가격: 1건당 $0.001 (1,000건 $1)
• 출처: 서울특별시, 서울 열린데이터광장 · 공공누리 제1유형(상업적 이용 가능, 출처표시)