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NomaDamas
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building-register-search

Queries Korean building-register title records by address, PNU, or legal-dong parcel codes.

7.4k|904|Updated Mar 24, 2026
Search Tags:#geocoding#property lookup#pnu#data.go.kr#korea real estate#건축물대장#building register
One-click install
npx skills add https://github.com/NomaDamas/k-skill --skill building-register-search
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: building-register-search
Source: https://github.com/NomaDamas/k-skill/tree/main/building-register-search
Command: npx skills add https://github.com/NomaDamas/k-skill --skill building-register-search

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes scripts (resource) components.

What problem does it solve?

Looking up official Korean building-register (건축물대장) title information normally requires navigating government portals and understanding PNU codes, legal-dong codes, and parcel numbering. This Skill queries the Ministry of Land, Infrastructure and Transport's official getBrTitleInfo API and returns normalized results such as main use, total floor area, floor counts, and use-approval date.

Core Features & Use Cases

  • Flexible Input: Look up records by 19-digit PNU, by sigungu/bjdong legal-dong codes with parcel numbers, or by plain address (geocoded via Kakao Local through the k-skill proxy).
  • Official Data Only: Uses the public-data-portal dataset 15134735 endpoint, with a hosted proxy mode requiring no user key and a direct mode using your own DATA_GO_KR_API_KEY.
  • Use Case: Before signing a lease, ask for the building-register record of a specific address to verify the registered main use, total floor area, and approval date against what the listing claims.

Quick Start

Ask the agent to look up the Korean building-register title record for the address or PNU you provide, for example the record for a parcel in Gangnam-gu, Seoul.

Frequently Asked Questions about building-register-search

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I look up a Korean building register by address?▼

Provide a parcel-level address and the skill geocodes it through the k-skill proxy's Kakao Local endpoint to derive the legal-dong code and parcel numbers, then calls the building-register title API. Ambiguous or place-name-only addresses are rejected rather than guessed.

What is a PNU and how is it used for building register search?▼

A PNU is a 19-digit parcel identifier combining sigungu code, bjdong code, land category, and bun/ji numbers. The skill converts PNU land category 1 or 2 into the building-register API's platGbCd values 0 or 1 before querying.

Do I need an API key to query the Korean building register?▼

No key is needed when using the hosted k-skill proxy. Direct mode requires your own DATA_GO_KR_API_KEY from the public data portal, plus a separate activation request for dataset 15134735 before calls will authenticate.

Does building register search show ownership or mortgage information?▼

No. This skill only reads the administrative title record (표제부) such as main use, area, and floors. Ownership rights, mortgages, and seizures require the separate iros-registry-automation skill for registry records.

Why does building register lookup fail with an auth error?▼

HTTP 401/403 or semantic auth errors usually mean dataset 15134735 has not been activated for your data.go.kr key. The dataset is auto-approved but must be explicitly requested before calls succeed.

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