Style Act Inc. (Chuo-ku, Tokyo; President and CEO: Yuu Oki), which develops businesses using real estate big data, has released the July 2026 area-specific top mansion ranking for the "Oki-Style Profitable Probability" index, which indicates the likelihood of maintaining asset value, on its "Sumai Surfin" website (https://www.sumai-surfin.com/).

Amidst the recent surge in condominium prices, the proportion of consumers who prioritize asset value when considering a purchase is increasing. In response to these social trends and consumer needs, "Sumai Surfin" ranks condominiums in the Capital Region in descending order of "Oki-Style Profitable Probability" and announces the results monthly, aiming to support condominium selection with a focus on asset value. The properties targeted are condominiums currently on sale or scheduled for sale in the Capital Region. This release specifically announces the top-ranked properties for "Standard (*)" and "Katsu (*)" properties in 9 areas.

The July release targets properties confirmed as being on sale or scheduled for sale as of June 11, 2026.

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

* "Standard" properties are condominiums with a high number of units in 3LDK or 4LDK layouts, and "Katsu" properties are those with a high number of units in 1LDK or 2LDK layouts.

URL for "Sumai Surfin Page"

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

About "Oki-Style Profitable Probability"

This is calculated by determining the percentage of past properties that have realized capital gains within each category, and then averaging the figures for the categories to which the property belongs.

Categories are divided by walking distance, such as within 5 minutes, within 10 minutes, etc.

Target categories include location (administrative ward, station, walking distance), property attributes (total number of units, number of floors, size range, price range), and others.

The verification of these results is proven as follows: a higher profitable probability indicates that the property has appreciated in price when resold as a used property.

(Graph) Resale Price Fluctuation Rate by Profitable Probability

≪Sumai Surfin Site Overview≫

A free membership-based second opinion site for condominiums that aims to enrich lives through analytical information.

It visualizes information that buyers and sellers need when transacting condominiums, providing real estate information that was difficult for prospective buyers and sellers to obtain.

It offers abundant content, including condominium appraisal prices, market information, member property evaluations, developer evaluations, and condominium buyer experiences.

It lists appraisal prices for 2.07 million condominiums, new condominium price lists for 130,000 units, and price forecasts for all new properties over the past two years. The number of members is approximately 330,000 (as of April 2026).

URL: https://www.sumai-surfin.com/

It is operated by Style Act Inc., a leading real estate big data company that researches and analyzes over 100 million real estate data points 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/

Method for Appraising New Condominium Prices: https://www.sumai-surfin.com/guide/shinchiku_jika.php

FACT BOX

  • Source: PR TIMES
  • Category: データ分析