Porty Inc., Operator of Vacant House Flea Market Service 'Porty Vacant House Bank', Completes Pre-Series A Round. Raises a Cumulative Total of 150 Million Yen in the Round
Porty Inc. raised 65 million yen in the 2nd close of its Pre-Series A, bringing the round total to 150 million yen. The funds will be used to expand distribution channels for professional real estate investors.
📋 Article Processing Timeline
- 📰 Published: April 14, 2026 at 19:00
- 🔍 Collected: April 14, 2026 at 10:31
- 🤖 AI Analyzed: April 19, 2026 at 18:26 (127h 55m after Collected)
Porty Inc. (Headquarters: Tama-ku, Kawasaki City, Kanagawa Prefecture; CEO: Yohei Taira; hereinafter 'Porty'), operator of the real estate flea market service 'Porty Vacant House Bank', where any house can be bought and sold, and an AI rent assessment service, announces that it has raised 65 million yen in the 2nd close of its Pre-Series A round through a third-party allotment of shares to a fund managed by Mizuho Capital Co., Ltd. and individual investors. Combined with the 1st close (85 million yen) conducted in November 2025 with NES Inc., Inclusion Japan Inc., and 90s No.1 Investment Business Limited Partnership as underwriters, the cumulative amount raised in this round reached 150 million yen, completing the Pre-Series A round. The total amount raised since the seed round is approximately 230 million yen.
Until now, 'Porty Vacant House Bank' has been developing its service primarily centered on matching between individuals. In addition, moving forward, we will also strengthen the development of distribution channels targeting professional real estate investors. As part of this, we have officially released a Web version (https://porty.co.jp/) that makes it easier to list, compare, and inquire about properties from a PC.
The funds raised this time will be invested in strengthening the development of new distribution channels including professional investors, product improvement, and strengthening the operational foundation utilizing AI.
Background of Funding
Porty is a real estate AI startup that develops and provides 'Porty Vacant House Bank', a real estate platform where individuals can freely buy and sell regional vacant houses and land using AI, in addition to operating the AI rent assessment service 'Porty Rent Assessment', which has been used over 4.5 million times cumulatively.
In Japan's depopulating society, the number of vacant houses domestically recorded an all-time high of 8.99 million in 2023, and there are estimates (*1) that it will double to over 18 million units by 2043, indicating a rapid increase expected in the future. On the other hand, regional vacant houses and land often have low price ranges and may have legal issues such as rights relations, making real estate brokers reluctant to handle them. As a result, properties do not enter the market, creating a structural problem where distribution is difficult to occur.
*1 From Nomura Research Institute, Ltd. June 2024 Survey https://www.nri.com/jp/news/newsrelease/files/900036671.pdf
At 'Porty Vacant House Bank', by utilizing AI to assess property sale prices and simplifying the property posting flow, we have made it possible to list properties for sale in as little as 40 seconds from home. By providing a service that allows potential buyers to be recruited on the internet with a low hurdle, we have been supporting the matching of vacant houses, land, and vacation homes across Japan.
Following the funding from the Pre-Series A 1st close in November last year, we launched a vacant house sale consultation service for individuals in January 2026. In the roughly two months since the launch, we have received over 300 cumulative consultation requests for sales, reaffirming the high sales needs of vacant house owners.
By receiving investment from Mizuho Capital, a venture capital firm under the Mizuho Financial Group this time, we will more powerfully promote collaboration with local real estate companies connected to financial institutions, facilitate the distribution of vacant houses, and revitalize regional areas.
Comments from Investors
Mr. Mitsumasa Matsumoto, Mizuho Capital Co., Ltd.
'The real estate trading platform by AI agents, 'Porty Vacant House Bank', is a unique business that accurately captures the business opportunities of solving the social issue of vacant houses and legal revisions. We highly evaluated it and invested in it as a venture that can be expected to expand its business through CEO Taira's real estate knowledge and the capabilities of the core members to achieve high UX. We intend to support Porty's growth by utilizing the Mizuho Group's network.'
Strengthening the Development of Distribution Channels for Pro Investors
Porty Vacant House Bank has so far developed as a matching service connecting individuals who want to sell vacant houses with individuals who want to buy them. Going forward, we will newly strengthen the development of distribution channels aimed at professional real estate investors.
While there are many regional vacant houses and land properties that are difficult to find buyers for as they are, there are also many properties that can generate new value through renovation and conversion of use. By connecting these properties to professional real estate investors who possess revitalization know-how, we will create new matching opportunities for properties that have been difficult to distribute until now.
In addition to matching between individuals, real estate investors
Until now, 'Porty Vacant House Bank' has been developing its service primarily centered on matching between individuals. In addition, moving forward, we will also strengthen the development of distribution channels targeting professional real estate investors. As part of this, we have officially released a Web version (https://porty.co.jp/) that makes it easier to list, compare, and inquire about properties from a PC.
The funds raised this time will be invested in strengthening the development of new distribution channels including professional investors, product improvement, and strengthening the operational foundation utilizing AI.
Background of Funding
Porty is a real estate AI startup that develops and provides 'Porty Vacant House Bank', a real estate platform where individuals can freely buy and sell regional vacant houses and land using AI, in addition to operating the AI rent assessment service 'Porty Rent Assessment', which has been used over 4.5 million times cumulatively.
In Japan's depopulating society, the number of vacant houses domestically recorded an all-time high of 8.99 million in 2023, and there are estimates (*1) that it will double to over 18 million units by 2043, indicating a rapid increase expected in the future. On the other hand, regional vacant houses and land often have low price ranges and may have legal issues such as rights relations, making real estate brokers reluctant to handle them. As a result, properties do not enter the market, creating a structural problem where distribution is difficult to occur.
*1 From Nomura Research Institute, Ltd. June 2024 Survey https://www.nri.com/jp/news/newsrelease/files/900036671.pdf
At 'Porty Vacant House Bank', by utilizing AI to assess property sale prices and simplifying the property posting flow, we have made it possible to list properties for sale in as little as 40 seconds from home. By providing a service that allows potential buyers to be recruited on the internet with a low hurdle, we have been supporting the matching of vacant houses, land, and vacation homes across Japan.
Following the funding from the Pre-Series A 1st close in November last year, we launched a vacant house sale consultation service for individuals in January 2026. In the roughly two months since the launch, we have received over 300 cumulative consultation requests for sales, reaffirming the high sales needs of vacant house owners.
By receiving investment from Mizuho Capital, a venture capital firm under the Mizuho Financial Group this time, we will more powerfully promote collaboration with local real estate companies connected to financial institutions, facilitate the distribution of vacant houses, and revitalize regional areas.
Comments from Investors
Mr. Mitsumasa Matsumoto, Mizuho Capital Co., Ltd.
'The real estate trading platform by AI agents, 'Porty Vacant House Bank', is a unique business that accurately captures the business opportunities of solving the social issue of vacant houses and legal revisions. We highly evaluated it and invested in it as a venture that can be expected to expand its business through CEO Taira's real estate knowledge and the capabilities of the core members to achieve high UX. We intend to support Porty's growth by utilizing the Mizuho Group's network.'
Strengthening the Development of Distribution Channels for Pro Investors
Porty Vacant House Bank has so far developed as a matching service connecting individuals who want to sell vacant houses with individuals who want to buy them. Going forward, we will newly strengthen the development of distribution channels aimed at professional real estate investors.
While there are many regional vacant houses and land properties that are difficult to find buyers for as they are, there are also many properties that can generate new value through renovation and conversion of use. By connecting these properties to professional real estate investors who possess revitalization know-how, we will create new matching opportunities for properties that have been difficult to distribute until now.
In addition to matching between individuals, real estate investors