What Casa does

Casa Inc. (株式会社Casa, TYO: 7196) is a Japanese publicly-listed financial-services company that provides rent guarantee and child support guarantee services. Founded in 2008 and incorporated in 2013, Casa listed on the Tokyo Stock Exchange Standard Market in October 2017 and is headquartered in Shinjuku, Tokyo with 12 branch offices across Japan and approximately 380 employees. The company operates a dual-core business model: a rent guarantee business (家賃債務保証事業) that substitutes for traditional personal guarantors in residential leases, and a child support guarantee business (養育費保証事業, marketed as 養育費保証PLUS) that ensures continuity of child support payments for single-parent households, covering up to 36 months of unpaid support.

Casa serves three rent-guarantee customer segments — tenants, property owners (landlords), and real estate management companies — primarily through a network of approximately 22,000 real estate agency channel partners across Japan. Direct distribution is enabled through proprietary web platforms (OwnerWEB for self-managing landlords, CasaWEB for real estate management companies, and Room Connect as a real estate DX integration hub), plus direct sales staff at headquarters and regional branches targeting enterprise property management firms. Revenue is generated through subscription/recurring fees — initial guarantee contract fees plus annual guarantee fees (e.g., 10,000 yen for residential properties) for rent guarantee, and a one-month initial fee plus 3% monthly fee (minimum 1,000 yen) for child support guarantee, with additional income from late-payment processing and platform services.

The company's technology stack includes digital guarantee application and contract execution (with DocuSign electronic contract integration since October 2020), API-based data exchange with partner real estate management platforms (Go Web! from May 2026 and いい生活/Ii Seikatsu from January 2026), and an AI-powered real estate management simulator launched in September 2020 that provides predictive analytics for property owners. Casa has cumulatively served approximately 2.4 million users and 270,000 property owners, reports a 92.2% customer satisfaction rate, and reports that its child support guarantee service achieves a 90%+ payment collection success rate. The company has pursued a tuck-in M&A strategy with the 2023 acquisition of GoldKey Co., Ltd. (a tenant app provider) and has built regulatory and ecosystem partnerships with over 100 Japanese municipalities providing child support guarantee subsidies.

Name

Casa

Legal name

株式会社Casa

Website

https://casa-inc.co.jp

Company type

Public

Founded year

2013

Operating status

Operating

Headcount range

251–500 employees

Short description

Casa Inc. is a Japanese publicly-listed company providing rent guarantee and child support guarantee services through 22,000 real estate agency partners, serving 2.4 million users and 270,000 property owners across Japan.

Ownership category

akta.pro rank

Product category

Rent Guarantee Services

NAICS

Residential Property Managers (531311)

SIC

Real Estate Agents & Managers (For Others) (6531)

akta.pro primary industry

Residential Rental Brokerage & Tenant Placement (BPAJAAAF)

akta.pro secondary industry

Affordable Housing Property Management (BPAJAGAJ)

Keywords

• Rent guarantee services
• Child support guarantee
• Real estate DX
• Property management
• Guarantor services

Headquarters

HQ city

Tokyo

HQ country

Japan

HQ region

Asia

Offices12 records

Markets served

GTM type

B2B and B2C

Offering type

Services

Cost components

Personnel, Operations, Technology or R&D, Marketing or Sales, Infrastructure

Revenue model

1. Rent Guarantee Service Fees: Annual guarantee fees charged to tenants for rent guarantee services. Initial guarantee contract fee at contract signing plus recurring annual fees. Also includes transaction fees for late payment processing.
2. Child Support Guarantee Service Fees: Initial guarantee contract fee (one month of monthly child support amount) plus monthly guarantee fee (3% of monthly child support). Covers up to 36 months of unpaid support.
3. Platform Services: DX platform services for real estate companies including API integrations with property management systems.

Pricing tiers

Go-to-market motion2 records

Distribution channels4 records

Marketing channels5 records

Core offering

Casa provides rent guarantee services (家賃債務保証サービス) acting as a formal guarantor for residential and business tenants across Japan, and child support guarantee services (養育費保証PLUS) that pay single-parent households when child support is not received, covering up to 36 months of unpaid support. The company distributes these guarantee services through approximately 22,000 real estate agency partners and through proprietary digital platforms—OwnerWEB for self-managing landlords, CasaWEB for real estate management companies, and Room Connect for property management system integrations—plus an AI-powered management simulator and DocuSign-powered electronic contracts.

Product overview

Casa operates a dual-core business model consisting of a Rent Guarantee platform (家賃債務保証事業) and a Child Support Guarantee platform (養育費保証事業). The rent guarantee business offers three service tiers: tenant-facing services, owner-facing services including OwnerWEB portal, and real estate company services through CasaWEB. The company provides Real Estate DX solutions including Room Connect, OwnerWEB, and CasaWEB platforms. The child support guarantee business offers the 養育費保証PLUS service with additional support for housing and employment. Additional services include the Owners Club membership program and Mamasma media platform.

Differentiator

Problem solved

Functional benefit

Brands

• Roomコネクト: Real estate DX platform for property management.
• OwnerWEB
• CasaWEB
• オーナーズ倶楽部
• ママスマ
• 養育費保証PLUS

Products and services

• Rent Guarantee Service (家賃債務保証サービス) Core guarantee service under which Casa acts as the formal guarantor for residential and business tenants when renting property in Japan, covering rent payment defaults and serving tenants, property owners, and real estate companies.
• Child Support Guarantee Plus (養育費保証PLUS) Guarantee service ensuring that single parents receive child support payments; if the paying parent defaults, Casa covers up to 36 months of unpaid support and provides wraparound housing and employment assistance.
• OwnerWEB (家主ダイレクト) Web platform enabling self-managing property owners to subscribe to Casa's guarantee services, manage tenant rent collection, track payment status, and administer guarantee contracts independently.
• CasaWEB Web portal for real estate management companies to manage guarantee contracts, track tenant payment status, and process claims through Casa's guarantee services.
• Room Connect (Roomコネクト) Real estate DX platform connecting various real estate management systems and services, including API-based data exchange with partner platforms such as Go Web! and いい生活.
• AI Real Estate Management Simulator AI-powered predictive analytics tool enabling property owners to simulate and forecast rental business performance using predictive models for occupancy, rent pricing, and portfolio optimization.
• Electronic Contract Service (with DocuSign) Digital contract execution service powered by DocuSign integration, enabling electronic signatures for rental agreements and guarantee contracts.

Quantifiable outcome

• Customer satisfaction rate of 92.2%
• +2 more outcomes

Named customers3 records

Segments5 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

Yes

API docs

API detail

Core technology

AI maturity

App detail

Integration3 records

AI capability2 records

Feature3 records

Partnerships

Four partnerships are on record, tiered flagship and core.

• EPARK Financial Partners (EPARK フィナンシャルパート�19 December 2025
• Osaka City GovernmentflagshipStrategic or Co-development Partner · 27 September 2023Partnership agreement with Osaka City for single parent support. Osaka City provides subsidies for child support guarantee service usage, and Casa contributes to the city's single parent support initiatives.
• Chiryu City, Aichi PrefectureflagshipStrategic or Co-development Partner · 19 November 2021Partnership agreement for child support guarantee services. Local government promotes Casa's services to single parent residents and provides subsidy support.
• Japan Single Mother Support Association (日本シングルマザー支援協会)coreStrategic or Co-development Partner · 4 March 2021Business alliance to support single parents. The association refers members to Casa's child support guarantee service, while Casa provides employment support and housing assistance for single parent families.

Scale indicators7 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• InTrust Inc. (イントラスト): Japanese publicly listed rent guarantee company with overlapping services for residential tenants, property owners, and real estate agencies. Most direct comparable competitor to Casa in the Japanese rent guarantee market.
• Nippon Chintai Hoshō (日本賃貸保証): Major Japanese rent and loan guarantee provider serving landlords and tenants. Operates in the same residential rent guarantee category as Casa with comparable agency-channel distribution.

Broad incumbents

• Leopalace21 (レオパレス21): Major Japanese rental housing provider and property manager. Comparable as a residential rental landlord business where guarantee services (Casa) are routinely bundled into lease agreements.
• Daito Trust Construction (大東建託): Largest Japanese rental housing management and construction firm; broad incumbent in residential property management that interfaces with guarantee companies. Casa's services plug into Daito-managed properties at scale.
• Sekisui House (積水ハウス): One of Japan's largest homebuilders with significant rental housing leasing operations. Operates residential rental portfolios that rely on rent guarantee providers like Casa.

Emerging players

• Ii Seikatsu (いい生活): Japanese real estate SaaS / property management software provider; Casa launched API integration with it in January 2026. Comparable as a technology platform embedded in the residential rental workflow.
• ARES (宅地建物取引業協会 / Association for Real Estate Securitization) members & competitors such as JPMC Japan Plus: Smaller Japanese rent guarantee and rental risk service providers that compete for real estate agency partnerships. Comparable business model but smaller scale relative to Casa's 22,000-store distribution footprint.

Others

• EPARK Financial Partners: Japanese fintech / financial services partner; Casa announced a business alliance with EPARK Financial Partners in December 2025 to provide tenant-facing tenant onboarding support packages. Comparable as a financial-services ecosystem partner adjacent to Casa's guarantee business.

Regional players

• TheGuarantors: U.S.-based rent guarantee insurance company serving landlords and renters in North America. Closest international analog to Casa's core rent guarantee business, though operating in a different regulatory and tenancy regime.
• Yardi Systems: Global residential and commercial property management software platform. Comparable technology/category to Casa's Room Connect, OwnerWEB, and CasaWEB DX platforms, though anchored in Western markets.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks5 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/channel/UCUEN2VtTJhAzsJyIvLhfVNA
• Instagraminstagram.com/youikuhi_plus_casa

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Subsidiaries1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A1 record

Investments2 records

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Casa