[Sumai Surfin] April 2026 Edition of "Oki-shiki Profitable Probability Top Apartment Ranking" by Tokyo Metropolitan Area, Revealing Apartments Likely to Maintain Asset Value, Announced

Style Act Co., Ltd. (Chuo-ku, Tokyo; Representative Director: Yujin Oki), which conducts business utilizing real estate big data, has announced the April 2026 edition of its "Oki-shiki Profitable Probability Top Apartment Ranking" by area, which indicates the probability of apartments in the Tokyo metropolitan area maintaining their asset value. This ranking is published on "Sumai Surfin" (https://www.sumai-surfin.com/), a service operated by the company.

In response to the recent surge in apartment prices, an increasing number of consumers are prioritizing asset value when considering a purchase. Reflecting these social trends and consumer needs, "Sumai Surfin" ranks apartments in the Tokyo metropolitan area by their "Oki-shiki Profitable Probability" in descending order and publishes this ranking monthly, aiming to support apartment selection with an emphasis on asset value. The target properties are apartments currently for sale or planned for sale in the Tokyo metropolitan area. This release only announces the top-ranked properties for "Standard (*)" and "Katsukatsu (*)" categories in each of the 9 areas.

The April publication covers properties for which sales or sales plans were confirmed as of March 12, 2026.

The relevant properties are as follows. Information on properties ranked below the first place in each area will be published on "Sumai Surfin."

* "Standard" properties refer to apartments with a large number of 3LDK or 4LDK layouts, while "Katsukatsu" properties refer to apartments with a large number of 1LDK or 2LDK layouts.

"Sumai Surfin Page" URL

https://www.sumai-surfin.com/product/okishiki/index.php

■ About "Oki-shiki Profitable Probability"

This index is calculated by determining the percentage of past properties that generated unrealized gains for each category and then averaging the category-specific values for the property in question.

Categories are divided, for example, by walking distance (within 5 minutes, within 10 minutes).

Target categories include location (administrative district, station, walking distance) and property attributes (total number of units, floor, area range, price range).

The validation of these results is demonstrated below. A higher profitable probability indicates a greater increase in price when the property is resold as a used apartment.

(Graph) Used Property Price Fluctuation Rate by Profitable Probability

≪Sumai Surfin Site Overview≫

A free membership-based second opinion site for condominiums that "enriches life with analytical information."

It "visualizes" information that buyers and sellers want to know when trading condominiums, providing real estate information that was previously difficult for prospective buyers/sellers to obtain.

It features rich content such as condominium appraisal prices, market information, member property evaluations, developer evaluations, and experiences of condominium purchasers.

It lists appraisal prices for 2.07 million condominiums, price lists for 130,000 new condominiums, and price forecasts for all new properties over the past two years. The number of members is approximately 300,000 (as of November 2023).

It is operated by Style Act Co., Ltd., an industry-leading real estate big data company that researches and analyzes over 100 million pieces of real estate information annually.

■ Purpose of Sumai Surfin: https://www.sumai-surfin.com/guide/aboutus/

■ How to use Sumai Surfin: https://www.sumai-surfin.com/k/static/sumaiSurfinTrotter/

■ New condominium price appraisal method: https://www.sumai-surfin.com/guide/shinchiku_jika.php