Free Release of "Real Estate Sale Price Map" Based on Public Data - Visualizing Market Prices at the Town/Block Level

Buzzbait Inc. (Location: Tokyo) announced in May 2026 the free release of "Real Estate Sale Price Map" (https://baikyaku-soba-map.jp/), a service that allows users to check nationwide real estate sale prices at the town/block level.

This service visualizes transaction prices for detached houses, condominiums, and land across Japan at the town/block level, based on public data from the Ministry of Land, Infrastructure, Transport and Tourism's "Real Estate Information Library."

Left: Smartphone version, Right: PC version

Background — Limited means for individuals to grasp market trends before considering a sale

Selling real estate is a transaction that most individuals experience only a few times in their lives. However, means of understanding transaction prices in one's own area are limited, and it is not uncommon for people to consider selling without a clear grasp of market trends.

The Ministry of Land, Infrastructure, Transport and Tourism publishes nationwide transaction price data as the "Real Estate Information Library," but an environment where general users can intuitively search on a map has not been established.

Service Features

"Real Estate Sale Price Map" is a service that visualizes nationwide transaction prices at the town/block level, based on public data from the Ministry of Land, Infrastructure, Transport and Tourism's "Real Estate Information Library."

・Uses public data released by the Ministry of Land, Infrastructure, Transport and Tourism ・Displays "number of transactions" and "average price per tsubo" at the town/block level on a map ・Supports filtered searches by prefecture and municipality ・No user registration or login required. Immediately available on smartphones

It can be utilized for a wide range of purposes, such as checking market prices before considering a sale, confirming market prices for inherited real estate, and comparing areas when considering relocation.

Development History

The developers felt that while public data related to real estate sales exists, there was a challenge in the lack of an environment where the general public could intuitively search for it.

"We want to provide a foundation where sellers can gather information with a 'sense of market value' based on public data," says the operator.

Operator's Comment

Real estate sales are significant transactions that occur only a few times in a lifetime, yet the information available to sellers beforehand is limited. We hope this service will help as many people as possible gather information calmly. (Operator, Buzzbait Inc.)

Future Developments

Currently, the service specializes in map display of transaction price data, but future plans include expanding supported areas and adding time-series analysis functions such as market price trends by area.

【Service Overview】

Service Name: Real Estate Sale Price Map URL: https://baikyaku-soba-map.jp/ Release Date: May 2026 Usage Fee: Free (No registration required) Data Source: Ministry of Land, Infrastructure, Transport and Tourism "Real Estate Information Library" Operating Company: Buzzbait Inc. Company URL: https://buzzbait.co.jp/

*The transaction prices and tsubo prices displayed in this service are reference information based on public data from the Ministry of Land, Infrastructure, Transport and Tourism's "Real Estate Information Library." They do not guarantee the appraisal value of individual properties or actual sale prices.