株式会社クリア

What 株式会社クリア does

株式会社クリア (DBA: クリアさんの窓の店, "Clear-san's Window Shop") is a privately held, family-owned (Hayashi family) window and door insulation retrofit specialist founded circa 1965, headquartered with a café-style showroom in Kofu City, Yamanashi Prefecture, Japan. The company retails and installs thermal-insulation, condensation-prevention, security, soundproofing, and disaster-prevention window and door products for residential and SME customers, executing sales, surveying, installation, and government-subsidy application support in-house. Service territory covers Yamanashi (primary), Tokyo, Kanagawa, Saitama, and Nagano prefectures.

The core technology portfolio is built on third-party manufactured components sold under multi-brand partnerships with LIXIL, YKKap, 三協立山, 不二サッシ, Nippon Sheet Glass (Spacia vacuum glass), AGC, and others. Products include Nippon Sheet Glass's Spacia vacuum glass (6.2mm thick, 4x the insulation of single-pane glass), Super Spacia (highest-grade vacuum glass), the PLAST interior window (with a slide-type variant added April 2026), the YKKap/Uchirimо/PlamаードU/InPlus interior window lines, the MOKU wood-frame sash, the マドリモ cover-method exterior window replacement (extended to condominiums in February 2026), the アップデートウィンドウ 10-minute quick-replacement system, and security products (セキュオ, 防衛くん, セフティルーバーWINDOW, CP面格子). An in-showroom soundproofing demonstration box quantifies performance (PLA ST at <70dB vs. Inplus at 80dB vs. open window at 95–100dB).

The business model is project-based one-time construction revenue with no recurring component, quote-based pricing (not publicly disclosed), and a 5% construction-fee discount for pre-booked showroom visits. Distribution combines direct-to-consumer showroom visits, web inquiries, event-driven SME seminars co-hosted with Kofu City and Yamanashi Chuo Bank, and bundled 代理申請 (proxy application) support for national (先進的窓リノベ事業, 子育てグリーン住宅支援) and municipal subsidy programs. Customer acquisition leans on a content-marketing blog (458+ articles), social channels (LINE, Instagram, Facebook, X), customer testimonial videos, and a referral program (up to ¥8,000 reward). Key certifications include the 2019 Spacia National Sales Marathon Tokyo Special Award from Nippon Sheet Glass and Ricoh Japan's 2024 SMB Case Study feature. Strategic positioning is anchored in decarbonization policy: AGWH member (2022), Longlife Lab supporting member (2020-02), Kofu City SDG Promotion Partner (2024-09), Deko-Katsu Declaration (2026-04-02), and Kofu City Regional Decarbonization Partners Program partner operator (2025-07-21).

Name

株式会社クリア

Legal name

株式会社クリア

Website

https://clear-g.co.jp

Company type

Private

Founded year

1965

Operating status

Operating

Headcount range

11–50 employees

Short description

株式会社クリア (クリアさんの窓の店) is a family-owned Yamanashi-based window and door insulation retrofit specialist installing vacuum glass, interior windows, and cover-method sash replacements for residential and SME customers across five Japanese prefectures, with bundled government-subsidy application support.

Ownership category

akta.pro rank

Headquarters

HQ city

Kofu

HQ country

Japan

HQ region

Asia

Offices1 record

Markets served

GTM type

B2C

Offering type

Services

Cost components

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

Revenue model

1. Window and Door Retrofit Construction: One-time installation fees for window glass replacement, interior window (内窓) installation, exterior window replacement using cover method (カバー工法), door replacement, security product installation, and related residential minor renovations. Revenue is project-based with no recurring component.
2. Subsidy Application Support Services: Assists customers with government subsidy applications (先進的窓リノベ事業, 子育てグリーン住宅支援事業, etc.) as a value-added service to support customer acquisition and project completion. This service is bundled with construction contracts.

Pricing tiers

Go-to-market motion2 records

Distribution channels2 records

Marketing channels11 records

Core offering

Clear Corporation is a window and door renovation contractor that sells, installs, and services thermal-insulation retrofit products for existing and new residential properties. The company sells and installs vacuum glass (Spacia series), interior windows, exterior sash replacement via cover method, doors, security shutters/louvered shutters, soundproof glass, and quick-replacement windows, bundling installations with government subsidy application support. It operates a café-style showroom in Kofu City, dispatches its own technicians across Yamanashi and neighboring prefectures, and acts as a designated partner in the Kofu City Regional Decarbonization Partners Program for SMEs.

Product overview

株式会社クリア（クリアさんの窓の店）是一家位于山梨县的窗户·门·住宅小装修专业店，提供多种窗户和门的改装产品。公司主要通过覆盖法（Cover Method）提供内外窗更换、内窗安装、玻璃更换等服务。产品组合包括以日本板硝子「スペーシア」系列为首的真空玻璃产品（スペーシア、スーパースペーシア、すぃーシアクール）、LIXIL/YKKap等厂商的内窗产品（プラスト、ウチリモ、プラマードＵ、インプラス、MOKUサッシ）、外窗更换产品マドリモ、快速窗更换产品アップデートウィンドウ、通风雨窗系列（エコ雨戸、エコ引違い雨戸、エコ面格子）、防晒产品パラソリアオーニング、防盗产品系列（セキュオガラス、ＣＰ面格子、防衛くん、セフティルーバー）、防音玻璃（ソノグラス）、玄关门产品ドアリモ、抗病毒产品（ウイルスクリーン、リベックスKV210）等。主要服务包括窗框更换、内窗设置、玻璃更换、防盗产品安装等小装修工程，并通过支持补助金申请（先进的窗リノベ事业、育儿绿色住宅事业等）来帮助客户降低装修成本。

Differentiator

Problem solved

Functional benefit

Products and services

• Vacuum Glass Spacia Installation (真空ガラス「スペーシア」) Retrofit installation of Nippon Sheet Glass vacuum glass "Spacia" — 6.2mm-thick vacuum-sealed glass that fits into existing single-pane sash frames and delivers approximately 4x the insulation performance of single-pane glass; primarily used to solve condensation and improve winter/summer thermal comfort. For individual homeowners and small businesses in existing homes.
• Super Spacia Vacuum Glass Installation (真空ガラスの最高峰「スーパースペーシア」) Installation of Nippon Sheet Glass Super Spacia, the top-tier vacuum glass providing maximum thermal insulation for residential and small commercial windows.
• Spacia Cool Vacuum Glass Installation (真空ガラス「スペーシアクール」) Installation of Spacia Cool, a heat-shielding variant of Nippon Sheet Glass vacuum glass designed to reduce summer heat gain through existing windows.
• Interior Window Installation - Plast (内窓「プラスト」) Installation of Plast interior windows, marketed as the air-tightness No.1 interior-window product with differentiated frame and rail shape versus competing brands; achieves up to ~70dB in the showroom soundproofing demonstration. For individual homeowners seeking insulation, condensation prevention, and soundproofing.
• Interior Window Installation - Uchirimo, Pramode U, Inplus (内窓「ウチリモ」「プラマードＵ」「インプラス」) Installation of LIXIL Uchirimo and Inplus, and YKKap Pramode U interior windows; multi-brand options that allow the company to recommend the best-fit interior window per household.
• Wooden Interior Window Installation - MOKU Sash (木製内窓「MOKUサッシ」) Installation of MOKU Sash wooden interior windows made from solid New Zealand pine using floating construction; combines air-tightness, insulation performance, and design appeal in three color options. For design-conscious homeowners.
• Exterior Window Cover-Method Replacement - Madolimo Detached (戸建用カバー工法サッシ交換「マドリモ」) Cover-method exterior sash replacement for detached homes; new frames are installed directly over existing frames without full demolition. For homeowners needing full sash upgrade rather than interior overlay.
• Condominium Cover-Method Sash Replacement - Madolimo Mansion (マンション用カバー工法サッシ交換　マドリモ) Cover-method exterior sash replacement specifically designed for condominiums; new frames installed over existing frames. For condo owners and building managers seeking insulation upgrades without major demolition.
• Quick Window Replacement - Update Window (アップデートウィンドウ) Quick-installation window-replacement service combining LIXIL Symphony sashes with Super Spacia vacuum glass, marketed as a 10-minute window-glass replacement solution for time-constrained households.
• Door Replacement - Doalimo (ドアリモ) Replacement of entry doors and sliding doors (玄関ドア・引戸) for residential properties; bundled with window renovation offerings to address cold/heat entry points around doors.
• Security Shutter Installation - Boeikun (防犯シャッター「防衛くん」) Indoor-installed retractable shutter (防衛くん) for security and typhoon protection; suitable for condo balcony doors and properties where outdoor shutters are not feasible.
• Security Louver Window Installation - Safety Louver WINDOW (防犯雨戸「セフティルーバーWINDOW」) Installation of inside-mounted security louvered window with anti-burglary, privacy, and ventilation functions; double-lock configuration; popular among women and households with pets.
• Government Subsidy Application Support Service (補助金申請サポート・代理申請) In-house agency service that prepares and submits paperwork on behalf of customers for national, metropolitan, and municipal window/door insulation subsidy programs; bundled with construction contracts to reduce customer friction. For individual homeowners and SMEs seeking subsidy-supported renovations.

Quantifiable outcome

• Vacuum glass スペーシア provides 4x the insulation of single-pane glass while being only 6.2mm thick
• +2 more outcomes

Named customers7 records

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Five partnerships are on record, tiered core and minor.

• 甲府市 (Kofu City Government)coreStrategic or Co-development Partner · 21 July 2025甲府市地域脱炭素パートナーズプログラム (Kofu City Regional Decarbonization Partners Program). The company was selected as a partner business for the SMB decarbonization initiative. The program supports small and medium enterprises in Kofu City with window insulation as a key decarbonization measure, with the goal of reducing CO2 emissions by 46% by 2030 (vs 2013 levels).
• やまなし地域デザイン株式会社 (Yamanashi Region Design Co.)minorStrategic or Co-development Partner · 1 July 2025Operates as the secretariat for the 甲府市地域脱炭素パートナーズプログラム. Co-organizes seminars with Kofu City and regional banks to educate SMEs about window insulation subsidies and decarbonization.
• 山梨中央銀行 (Yamanashi Chuo Bank)minorGTM or Marketing Partner · 1 January 2025Partners with the company for SMB decarbonization seminars held at the former Yamanashi Chuo Bank Kofu Ekimae Branch. Seminars educate SME customers about window insulation subsidy programs and energy efficiency.
• （一社）住宅ストックグリーン化推進協議会 (AGW, formerly 住宅開口部グリーン化推進協議会)coreStrategic or Co-development Partner · 1 January 2022Formerly 住宅開口部グリーン化推進協議会 (AGW). Established August 2022, led by Matsumoto of Matec Corporation as chairman.会长: LIXIL, YKKap, 三協立山,不二サッシュ as vice-chairmen, plus 11 glass manufacturers including 日本板硝子ビルディングプロダクツ. The company joined as a member to participate in decarbonization efforts and promote window insulation for carbon neutrality by 2050.
• （一社）ロングライフ・ラボ (Longlife Lab)minorStrategic or Co-development Partner · 1 January 2020Established to promote residential thermal insulation for energy savings, health, and climate change prevention. Company became a supporting member (賛助会員) in February 2020. Longlife Lab disseminates correct information about building insulation to drive behavioral change in society.

Scale indicators3 records

Recent moves6 records

Expansion highlights6 records

Broad incumbents

• Fuji Sash (不二サッシ): Japanese sash manufacturer producing window and curtain wall systems for commercial, residential, and public buildings. Serves as AGWH vice-chairman. Comparable as a major manufacturer whose products target the same building renovation market.
• Excel Shanen (エクセルシャノン): Japanese window manufacturer whose NS50 all-resin triple-glass sash is specifically recommended by Clear for new construction projects. Comparable as a key product supplier in Clear's premium insulation portfolio.
• AGC: Global Japanese glass manufacturer whose products Clear distributes alongside NSG offerings. AGWH member organization. Comparable as an industry supplier whose products Clear installs across residential and commercial projects.
• LIXIL: Japan's largest window, door, and home building products manufacturer. Clear directly resells LIXIL products including Uchirimo, Inplus, Plast, Plamade U, and Madolimo, and LIXIL serves as AGWH vice-chairman. Comparable as the dominant industry supplier whose products Clear installs.
• YKK AP: Major Japanese window and door manufacturer. Clear resells YKKap's Insplus interior window, NS50 all-resin triple-glass sash, M30 face-recognition automated door, Madolimo exterior replacement, and balcony railing Elview. YKKap is also an AGWH vice-chairman, making it the most strategically aligned supplier.
• Nippon Sheet Glass (NSG): Major Japanese glass manufacturer and producer of the Spacia vacuum glass series that is Clear's flagship offering. Clear won NSG's Spacia National Sales Marathon 2019 Tokyo Special Award. Comparable as the most important strategic supplier in Clear's product lineup.
• Sankyo Tateyama (ST Group): Japanese building materials manufacturer with sash, window, door, and aluminum extrusion products. Serves as AGWH vice-chairman alongside LIXIL and YKKap. Comparable as a major industry supplier active in the same decarbonization policy arena.

Others

• AGWH (Housing Stock Greenization Council): Industry council promoting decarbonization of existing housing stock through window and door insulation. Clear joined in 2022 alongside LIXIL, YKKap, Sankyo Tateyama, Fuji Sash, and 11 glass manufacturers. Comparable as the policy and ecosystem body that shapes the market Clear operates in.
• Flat Glass Association of Japan (板硝子協会): Industry association that operates the eco-glass加盟店 network of which Clear is a member. Many of Clear's direct competitors are also eco-glass member installers. Comparable as the governing industry body that establishes installer certification and customer-facing brand standards.

Emerging players

• Rinoco (リノコ): Online-focused window/door renovation platform serving Japanese homeowners with multiple product categories. Comparable as an emerging digital-first channel for window and door renovation services that competes for the same residential customer base.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks7 records

Key highlights7 records

Customer concentration

• Xx.com/clear_mado
• Facebookfacebook.com/%E3%82%AF%E3%83%AA%E3%82%A2%E3%81%95%E3%82%93%E3%81%AE%E7%AA%93%E3%81%AE%E5%BA%97-108981154068120/?eid=ARCAZJgCMP021Is6YNfjV2Dz8ZQOXkxlETcNQxZ1U3so0yUSVzEtSsJAmnnKPisqSz6PYZpCaCGaMZps
• Instagraminstagram.com/clear2314
• LinkedInlinkedin.com/company/%E6%A0%AA%E5%BC%8F%E4%BC%9A%E7%A4%BE%E3%82%AF%E3%83%AA%E3%82%A2

Compliance1 record

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 株式会社クリア