Developer builds English-language Korean apartment price tool on public government data

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A Seoul-based software engineer built a small side project in two days: a public Apify Actor that returns official Korean apartment sale and rent prices in English. Before starting, he found that the Apify Store already had more than 200 Actors for Korean sites, so the niche was not as open as he expected. He then dropped a wrapper around a Korean search-trends API after reading its terms, which barred reselling results, and chose public government data instead. The data comes from the Ministry of Land, Infrastructure and Transport and allows commercial reuse with attribution, though access requires Korean-language portal accounts. A key open question was whether the Korean government API would respond to requests from servers outside Korea, which he tested early using AI coding agents.

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