What Crassone does

Crassone Co., Ltd. (株式会社クラッソーネ) is a Nagoya-headquartered Japanese company founded in April 2011 that operates a digital marketplace connecting property owners needing demolition services with vetted demolition contractors. As of April 2026 the platform had registered more than 2,400 demolition contractors and served over 170,000 users nationwide, making it the largest demolition work matching platform in Japan by these metrics. The company is led by Representative Director and CEO Kawaguchi Teppei (河口哲平) and COO Horiguchi Koji (堀口晃司), the latter bringing a decade of demolition platform operating experience and prior sales experience at housing manufacturer Sekisui Heim.

The core product is a free, self-service quote aggregation service that matches consumers with up to six regional contractors and includes a free guarantee package (安心保証パック) covering deposit refund, completion guarantee, and liability insurance up to ¥2,000,000. The platform's primary technological differentiator is an AI-powered demolition cost simulator trained on approximately 130,000 historical estimate records, delivered via web and LINE, which provides instant cost estimates from structured property inputs. Supporting modules include a municipal partnership program (deploying digital tools including Home End-of-Life Navigation to 196 municipalities), a vacant house consultation service (家じまいの相談窓口), an end-of-life home navigation service (すまいの終活ナビ) recognized as an MLIT model project for three consecutive years (2021-2023), and DocuSign-based electronic contract integration. The company holds ISO 27001 and Privacy Mark certifications and operates three offices in Nagoya, Tokyo, and Yakushima.

Crassone's revenue model is contractor-side: consumers use all services free of charge, while registered demolition contractors pay referral fees to receive customer introductions. This affiliate/referral economics structure is reinforced by distribution partnerships with 196 municipalities for vacant house countermeasures and content-driven demand generation through regional SEO, educational webinars, and informational content on demolition procedures, subsidies, and inheritance management. The business targets Japan's structural vacant house crisis (approximately 9 million properties, 13.8% vacancy rate nationwide) as its primary market driver, with the platform addressing the full lifecycle from initial consultation through demolition completion and post-demolition registration.

Name

Crassone

Legal name

株式会社クラッソーネ

Website

https://crassone.jp

Company type

Private

Founded year

2011

Operating status

Operating

Short description

Crassone operates Japan's largest online demolition work matching platform, connecting 170,000+ property owners with 2,400+ vetted contractors via free quote aggregation, an AI cost simulator, and 196 municipal government partnerships targeting the national vacant house crisis.

Ownership category

akta.pro rank

Product category

Demolition Services Marketplace

NAICS

Waste Management and Remediation Services (562), Other Waste Collection (562119)

SIC

General Bldg Contractors - Nonresidential Bldgs (1540), Sanitary Services (4950)

akta.pro primary industry

Demolition (Structural, Selective/Interior) (IMAFAKAK)

akta.pro secondary industry

Demolition Debris & Light Tear-Out Cleanouts (HSAKALAN)

Keywords

• Demolition matching platform
• Construction marketplace
• Vacant house solutions
• Home disposal services
• Contractor aggregation

Headquarters

HQ city

Nagoya

HQ country

Japan

HQ region

Asia

Offices3 records

Markets served

GTM type

B2B and B2C

Offering type

Digital Commerce or Content

Cost components

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

Revenue model

1. Platform Commission from Contractors: Revenue generated from registered demolition contractors who pay a fee to receive customer referrals through the platform. The platform is free for end consumers/users seeking demolition services.

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels5 records

Core offering

Crassone operates a free online demolition work quote aggregation platform that matches Japanese property owners seeking to demolish buildings with 2,400+ pre-vetted nationwide demolition contractors. The service is augmented by an AI-powered demolition cost simulator built on 130,000+ historical quotes, a 安心保証パック (Safety Guarantee Pack) covering defect and schedule overruns, and integration with electronic contracts (DocuSign) and LINE messaging. The platform serves three customer segments: individual property owners (free consumer matching), demolition contractors (paid lead intake), and municipal governments (Home Disposition Support Program and Home End-of-Life Navigation tools).

Product overview

Crassone operates a demolition work DX (digital transformation) platform offering a free multi-contractor quote aggregation service as its core product. The platform connects users seeking demolition work with a network of over 2,400 vetted demolition contractors nationwide. Supporting the core platform are several integrated service modules: an AI-powered demolition cost simulator (trained on 130,000 historical estimates), a municipality partnership program (deploying digital tools to 196 municipalities), a free consultation window for home disposition, a government-recognized end-of-life home navigation service (すまいの終活ナビ, MLIT model project 2021-2023), a free guarantee package (安心保証パック) covering payment guarantees, completion guarantees, and liability insurance, and a home disposition support program delivering coupons and educational content. The ecosystem is designed to address Japan's vacant house problem (9 million nationwide, 13.8% vacancy rate) through the entire lifecycle from consultation through demolition completion.

Differentiator

Problem solved

Functional benefit

Products and services

• Crassone Demolition Work Quote Aggregation Service Online matching platform that lets Japanese property owners request and receive up to four free demolition cost quotes from 2,400+ pre-vetted nationwide contractors in a single flow. Used by individual property owners, vacant-house holders, and homeowners planning rebuild or end-of-life disposition.
• Crassone AI Demolition Cost Simulator (解体費用シミュレーター) AI-powered cost-estimation tool that produces a demolition price band for Japanese property owners based on property attributes and a database of 130,000+ historical quote cases. Used by property owners to gauge market price before requesting contractor quotes, and accessible via web and LINE messaging.
• Crassone Safety Guarantee Pack (クラッソーネ 安心保証パック) Backed guarantee package covering defect and schedule overruns for property owners who select a demolition contractor through Crassone, including electronic contract execution via DocuSign. Sold / included to property owners as the closing guarantee step of a demolition engagement.
• Crassone Contractor Lead-Generation Service (工事会社様向けサービス) B2B service for demolition contractors that delivers qualified property-owner leads from the Crassone matching platform in exchange for per-lead / commission fees. Contractors additionally benefit from the Crassone Construction Meister certification signal surfaced to property owners.
• Home Disposition Support Program (家じまい支援プログラム) Co-branded municipal-partnership program under which Crassone works with 200+ Japanese local governments to provide citizen-facing vacant-house and end-of-life home disposition workflows, including consultation handoff to vetted demolition contractors.
• Home Disposition Consultation Window (家じまいの相談窓口) Free consultation desks that Japanese property owners can use to receive guidance on vacant-house and end-of-life home disposition, route into the Crassone demolition matching platform when demolition is appropriate.
• Home End-of-Life Navigation (すまいの終活ナビ) Digital navigation tool co-delivered with Japanese municipalities to help citizens with end-of-home-life decisions, including demolition, vacant-house handling, and successor planning. Sold/deployed as a B2G digital service to local governments.

Quantifiable outcome

• Average cost savings reported at 10-15% through competitive bidding and price negotiation support
• +1 more outcomes

Segments4 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration1 record

AI capability2 records

Feature2 records

Partnerships

One partnership is on record.

• Himeji City, Hyogo PrefecturemajorStrategic or Co-development Partner · 26 March 2026Partnership agreement signed in March 2026 for vacant house countermeasures. Leverages Crassone's digital tools including Home End-of-Life Navigation, cost simulator, and vacant house contact form to identify, manage, and demolish problematic vacant properties. Part of broader national vacant house crisis response (9 million nationwide properties, 13.8% vacancy rate).

Scale indicators5 records

Recent moves7 records

Expansion highlights6 records

Direct peers

• HomePro (ホームプロ): Japanese home renovation matching service operated by Homepro, Inc., connecting homeowners with vetted contractors for remodeling and improvement projects. Comparable in the Japanese home services marketplace model, free-for-consumer/contractor-paid structure, and quality guarantee mechanisms, though focused on renovation rather than demolition.
• Kaitai Support (解体サポート): Japanese demolition matching service providing multi-contractor quote comparison and end-to-end demolition support. Closely comparable to Crassone in target customer (individual property owners), service model (free consumer side, contractor referral revenue), and vacant house focus.
• Kaitai 110ban (解体110番): One of Japan's longest-running demolition contractor matching platforms, connecting property owners with demolition companies nationwide. Directly comparable to Crassone as a demolition-specialist marketplace in the same Japanese consumer and contractor segments.

Regional players

• Porch.com: US home services platform helping consumers find and book home improvement and maintenance professionals. Comparable in marketplace model and contractor monetization, though serves a broader home services portfolio and operates in a different geography.
• Hipages Group: Leading Australian home services marketplace connecting homeowners with tradies. Comparable in marketplace model, free consumer side, contractor-paid referral revenue, and end-to-end job facilitation, but operates in a different geography with broader trade coverage.

Broad incumbents

• Thumbtack: US home services marketplace with pay-per-lead model matching consumers with local professionals. Comparable in lead-generation and matching business model, free consumer experience, and contractor-paid monetization, though Thumbtack serves broad home services rather than a demolition vertical.
• Angi (formerly Angie's List): Large US home services marketplace connecting consumers with vetted contractors across many categories including demolition. Comparable in marketplace business model, contractor vetting, and consumer trust-building, though Angi is a broad incumbent serving many home service verticals rather than specializing in demolition.
• LIFULL: Major Japanese real estate and housing information platform (operator of LIFULL HOME'S). Comparable as a Japanese digital platform serving property-related transactions, with potential to enter or expand into adjacent services like demolition, though its core focus is real estate listings rather than contractor matching.

Emerging players

• Town Life (タウンライフ): Japanese home services platform providing quote aggregation for renovation, land utilization, and moving services. Comparable in multi-contractor quote matching and Japanese consumer/property owner segments, with partial overlap into the home disposition workflow Crassone addresses.
• Rakuten Lifull Stay / Vacan: Japanese digital platforms tackling vacant property and akiya issues through booking, listing, and management services. Comparable as Japanese companies addressing the same vacant house crisis from a different angle (utilization rather than demolition), representing both adjacent ecosystem peers and potential expansion territory for Crassone.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks6 records

Key highlights7 records

Customer concentration

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Funding overview

Funding rounds

Investors

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

M&A

Investments

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

Frequently asked questions about Crassone