Open House Group
Open House Group is a publicly listed Japanese real estate developer and broker building and selling single-family homes, condominiums, and land to individual homebuyers across nine prefectures, ranking as Japan's #1 condominium supplier group for five consecutive years.
- Company typePrivate
- Founded1996
- HeadquartersMarunouchi, Japan
- Headcount5,001–10,000
- GTM typeB2C
- OfferingServices
What Open House Group does
Open House Group is a publicly listed Japanese real estate developer and brokerage that develops, sells, and intermediates residential properties across nine prefectures spanning the Kanto (Tokyo, Kanagawa, Saitama, Chiba), Kita-Kanto (Gunma, Tochigi), Tokai (Aichi), Kansai (Osaka, Hyogo), and Kyushu (Fukuoka) regions. The group operates a multi-brand platform built around the core Open House (オープンハウス) owner-occupied housing brand, with wholly-owned subsidiaries Pressance Corporation (urban condominium development) and Open House Development Co., Ltd. (new home development and sales), plus the newly formed Open House Innovation Co., Ltd. The Inobus/Inovus sub-brand targets multi-story urban condominium projects, exemplified by recent Nagoya launches such as Inovus Hoshigaoka and Inobus Yagoto Momijien. Customer support services include loan simulation, FP (financial planner) consultation, first-time homebuyer counseling, and housing energy-performance certification for mortgage tax deduction eligibility.
The group's operational technology consists of a regional property-search portal with filters by prefecture, city, price, and layout; a loan-simulation system; a digital customer-referral program offering gift cards up to ¥100,000; and an integrated sales-center footprint supplemented by TV advertising, social channels (X, Facebook, Instagram, YouTube), email, and showroom visits. The semi-order (セミオーダー) housing model allows buyers to customize pre-designed homes within efficient build timelines, while ready-built single-family homes, land, and condominiums provide immediate-purchase inventory. Distribution is hybrid—own physical sales centers in named locations across Tokyo, Nagoya, Osaka, Kobe, and Fukuoka, plus the direct-to-consumer e-commerce portal at oh.openhouse-group.com—and the company also intermediates third-party properties through brokerage (仲介) services.
Open House Group makes money primarily through one-time sales of developed single-family homes, condominiums, and land to individual consumers (unit pricing individually quoted), supplemented by transaction-fee brokerage commissions on third-party properties and a capped referral-incentive mechanism. The group ranked #1 in the 2025 National Condominium Seller Group Supply Number Ranking for the fifth consecutive year, supplying 6,597 condominium units in 2025—more than double the second-place competitor—and benefits from a hybrid-segment customer mix spanning first-time buyers, upgrading families, and urban condominium investors across Japan's three largest metropolitan regions.
Open House Group firmographics
Firmographics- Name
- Open House Group
- Legal name
- 株式会社オープンハウス (Open House Co., Ltd.)
- Website
- https://oh.openhouse-group.com
- Company type
- Private
- Founded year
- 1996
- Operating status
- Operating
- Headcount range
- 5,001–10,000 employees
- Short description
- Open House Group is a publicly listed Japanese real estate developer and broker building and selling single-family homes, condominiums, and land to individual homebuyers across nine prefectures, ranking as Japan's #1 condominium supplier group for five consecutive years.
- Ownership category
- akta.pro rank
Open House Group industry classification
Industry- Product category
- Residential Real Estate Development
- NAICS
- New Housing For-Sale Builders (236117)
- SIC
- Real Estate Agents & Managers (For Others) (6531), Real Estate Dealers (For Their Own Account) (6532)
- akta.pro primary industry
- Affordable Housing & First-Time Buyer Brokerage (BPAJAAAD)
- akta.pro secondary industry
- Residential Investment Property Brokerage (SFR/Small Multifamily) (BPAJAAAE)
Keywords
Where Open House Group is headquartered
LocationHeadquarters
- HQ city
- Marunouchi
- HQ country
- Japan
- HQ region
- Asia
Offices5 records
Markets served
Open House Group business model
Business model- GTM type
- B2C
- Offering type
- Services
- Cost components
- Supply Chain, Operations, Personnel, Marketing or Sales, Infrastructure
Revenue model
- Residential Property Sales: Revenue is generated primarily through the sale of new and existing single-family homes (新房・中古一戸建て), land (土地), and condominiums (マンション). The company acts as both developer and real estate intermediary, selling properties directly to end consumers through its network of sales centers and online platform.
- Real Estate Intermediary Services: The company provides real estate brokerage and intermediary services for property transactions, earning commissions on successful sales. Services include property search assistance, transaction support, and post-sale services such as housing loan tax reduction certification.
- Referral Program Incentives: Customer referral program where the company offers gift cards (up to 100,000 yen) to both referrer and referee upon completed transactions, funded by intermediary fees (capped at 10% of intermediary fees received).
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Unit Pricing | Pay-as-you-go | Property prices vary by type and location |
Go-to-market motion1 record
Distribution channels5 records
Marketing channels7 records
Open House Group product offering
Product offeringCore offering
Open House Group is a Japanese residential real estate developer and brokerage that develops and sells new and existing single-family homes, condominiums, and land across Kanto, Tokai, Kansai, and Kyushu regions. The group also provides real estate intermediary (brokerage) services, loan simulation and FP consultation, housing energy performance certification, and operates the Inobus condominium brand through subsidiaries including Pressance Corporation and Open House Development.
Product overview
Open House Group operates a multi-brand real estate platform offering new and used single-family houses and land brokerage services across Japan. The core offering is the Open House platform (オープンハウス) providing property search across Kanto, Tokai, Kansai, and Kyushu regions. The group develops condominiums under the Inobus (イ・ノ・ブス) brand through subsidiaries including Pressance Corporation and Open House Development. Support services include loan simulation, financial planning consultation, and housing energy certification for mortgage tax deductions. The group recently established Open House Innovation as a strategic subsidiary to focus on organizational reform and new market expansion through next-generation technologies.
Differentiator
Problem solved
Functional benefit
Brands
- Pressance: Urban condominium development subsidiary planning name change from Pressance Corporation to Pressance Co., Ltd. in April 2026
- Inobus/Inovus
- Open House Development (オープンハウス・ディベロップメント)
Products and services
- New Single-Family Homes (新築一戸建て)
- Existing Single-Family Homes (中古一戸建て)
- Residential Land (土地)
- Inobus Condominium Brand (イ・ノ・ブス)
- Real Estate Intermediary (Brokerage) Services
- Home Buying Support Services (住まい探しのサポート)
- Housing Energy Performance Certification Service (住宅省エネルギー性能証明書発行サービス)
Quantifiable outcome
- Ranked #1 in 2025 National Condominium Seller Group Supply Number Ranking for 5 consecutive years
- +2 more outcomes
Companies that use Open House Group
Customer profileNamed customers6 records
Segments3 records
Ideal customer profiles3 records
Open House Group technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature3 records
Open House Group partnerships and signals
Strategic signalPartnerships
One partnership is on record.
- Open House Innovation Co., Ltd.coreEstablished as a wholly-owned strategic subsidiary of Open House Group on April 1, 2026, with capital of 1 billion yen. The new subsidiary focuses on organizational reform, global human resources development, and expansion into new markets and businesses through next-generation technologies. Led by former McKinsey partner Kazuaki Takemiura as president.
Scale indicators5 records
Recent moves8 records
Expansion highlights5 records
Open House Group competitors and assessment
Company assessmentBroad incumbents
- Mitsui Fudosan: Japan's leading comprehensive real estate developer, active in residential, office, retail, and hospitality. Comparable to Open House's urban condominium segment (through its residential division) and much larger in scale and capital base.
- Nomura Real Estate Holdings: Japanese real estate developer focused on housing (detached homes and condominiums) and commercial properties. Comparable to Open House on mid-to-large scale for-sale residential development in major metros.
- Mitsubishi Estate: Major Japanese real estate developer with significant residential condominium operations across Tokyo and other metros. Overlaps with Open House on urban condo supply, though its portfolio is dominated by office and commercial assets.
- Sekisui House: One of Japan's top two homebuilders, focused on custom-built and for-sale detached homes as well as urban redevelopment/condos. Comparable to Open House on single-family and condominium development, with deeper land bank and stronger brand.
- Tokyu Fudosan Holdings: Tokyo-based real estate developer with residential, commercial, and resort operations. Comparable to Open House on urban condominium development in the Tokyo metropolitan area.
- Sumitomo Realty & Development: Large Japanese developer active in custom-built housing, condominiums, and real estate brokerage. Comparable to Open House on detached home construction and Tokyo-area condo supply.
- Daiwa House Industry: Japan's largest homebuilder with nationwide single-family, rental, and condominium operations. Directly comparable to Open House's single-family and condominium business but at much greater scale and broader product mix.
- Daito Trust Construction: Japan's largest rental housing builder and manager, operating the 'Leopalace' brand. Tangentially comparable to Open House on single-family residential exposure, but the core business model (rental build-to-lease) differs materially.
Direct peers
- Haseko Corporation: Major Japanese condominium developer and general contractor, known for large-scale Tokyo-area condo supply. Direct peer to Open House/Pressance on urban condominium development.
- Pressance Corporation: Urban condominium developer in the Kansai region and a wholly-owned subsidiary of Open House Group. Direct comparable within the group for urban mid-market condo development; effectively a subsidiary but operates as an independent brand.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks6 records
Key highlights6 records
Customer concentration
Open House Group social profiles
Digital presenceOpen House Group financial estimates
Financial estimateRevenue estimate
Valuation estimate
Open House Group leadership team
Management profileNumber of profiles
Profiles1 record
Open House Group subsidiaries and ownership
Company hierarchySubsidiaries3 records
Open House Group funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Open House Group M&A and investment
M&A and investmentM&A
Investments2 records
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Open House Group
What does Open House Group do?
Open House Group is a Japanese residential real estate developer and brokerage that develops and sells new and existing single-family homes, condominiums, and land across Kanto, Tokai, Kansai, and Kyushu regions. The group also provides real estate intermediary (brokerage) services, loan simulation and FP consultation, housing energy performance certification, and operates the Inobus condominium brand through subsidiaries including Pressance Corporation and Open House Development.
Is Open House Group a public or private company?
Open House Group is a private company. It is classified as public and is currently operating.
When was Open House Group founded?
Open House Group was founded in 1996. It employs 5,001 to 10,000 people.
Where is Open House Group based?
Open House Group is headquartered in Marunouchi, Japan, in the Asia region.
How does Open House Group make money?
Three revenue lines are on record. Residential Property Sales are the primary driver. The others are real Estate Intermediary Services and referral Program Incentives.
Who are Open House Group's main competitors?
Broad incumbents on record are Mitsui Fudosan, Nomura Real Estate Holdings, Mitsubishi Estate, Sekisui House, Tokyu Fudosan Holdings, Sumitomo Realty & Development, Daiwa House Industry and Daito Trust Construction. Direct peers are Haseko Corporation and Pressance Corporation.
Does Open House Group have an API?
No public API is recorded for Open House Group.
What industry is Open House Group in?
Open House Group's product category is Residential Real Estate Development. Its primary akta.pro industry code is BPAJAAAD, Affordable Housing & First-Time Buyer Brokerage, with a secondary code of BPAJAAAE, Residential Investment Property Brokerage (SFR/Small Multifamily). Its NAICS code is 236117 and its SIC code is 6531.