Intergamma

What Intergamma does

Intergamma B.V. is the Dutch cooperative-owned parent organization behind three leading DIY retail chains in the Benelux — GAMMA Netherlands, Karwei (Netherlands), and GAMMA Belgium — operating through a hybrid model combining independent franchisees with a growing directly-operated store base. Founded in 1971 following the first GAMMA store in Breda, the company has grown to nearly 400 stores, approximately 10,000 employees, and €2 billion in gross turnover for 2025, holding a 20.3% combined market share of the Dutch home and garden market. Its business model spans franchise fees and centralized services (assortment planning, procurement, logistics, e-commerce, ICT, training, marketing), retail product sales through webshops and physical stores (30,000+ articles per webshop), professional services such as GAMMA Klusservice and Karwei in-home advisory, retail media advertising via the newly launched Intergamma Retail Media Group (IRMG), and franchise/loyalty data monetization through GAMMA Voordeelpas and Club Karwei.

The technology platform integrates an omnichannel commerce stack across webshops, mobile apps, in-store configurators, a color scanner for paint mixing, and an Autostore-equipped e-commerce fulfillment center in Antwerp. A new 95,000 m² flagship distribution center in Tiel, opened August 2025 and operated by DHL Supply Chain with BREEAM Excellent certification and 14,000+ solar panels, serves all 377+ stores and consolidates logistics previously spread across five sites. Supporting infrastructure includes Shell Recharge EV fast charging (1,400 points) and DHL/PostNL parcel lockers at store locations.

Revenue mechanics are diversified across one-time product transactions, professional installation services, advertising/sponsored placements, and franchise service fees. The customer base is broadly fragmented across DIY consumers, homeowners, and small contractors in the Netherlands and Belgium, with no concentrated customer dependency. Strategic momentum in 2025 includes the Budé Holding acquisition (13 stores, October 2025), the IRMG retail media launch (September 2025), SBTi validation of Scope 1/2/3 emissions targets (first DIY retailer in Benelux), and a 19% EBITDA increase to €176 million, alongside continued omnichannel leadership recognition (Karwei #1, GAMMA #2 in European Omnichannel Index 2026).

Name

Intergamma

Legal name

Intergamma B.V.

Website

https://intergamma.nl

Company type

Private

Founded year

1970

Operating status

Operating

Headcount range

5,001–10,000 employees

Short description

Intergamma operates the GAMMA and Karwei DIY retail chains across the Netherlands and Belgium through a franchise model with directly-operated stores, serving DIY consumers, homeowners, and small contractors with building materials, tools, paint, and home furnishings via nearly 400 stores and omnichannel webshops.

Ownership category

akta.pro rank

Product category

Home Improvement Retail

NAICS

Home Centers (444110), Building Material and Garden Equipment and Supplies Dealers (444), Hardware Retailers (44414)

SIC

Retail-Building Materials, Hardware, Garden Supply (5200), Retail-Auto & Home Supply Stores (5531)

akta.pro primary industry

General Home Improvement & Hardware Stores (CRAIADAA)

akta.pro secondary industry

Home Improvement & DIY (Tools, Hardware, Paint) Distribution (CRAOAFAC)

Keywords

• DIY retail stores
• Home improvement products
• Building materials supply
• Garden and decor retail
• Franchise retail operations

Headquarters

HQ city

Leusden

HQ country

Netherlands

HQ region

Europe

Offices4 records

Markets served

GTM type

B2C

Offering type

Services

Cost components

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

Revenue model

1. Retail Product Sales: Core revenue from selling DIY, home improvement, and garden products through GAMMA and Karwei physical stores and e-commerce webshops. Products span categories including building materials, tools, paint, flooring, window treatments, garden products, and home accessories. Revenue is generated through one-time product transactions at point of sale, both in-store and online.
2. Retail Media (Intergamma Retail Media Groep / IRMG.nl): New business unit launched in 2025 offering branded advertising and product campaigns to suppliers and advertisers across GAMMA and Karwei webshops (200M+ visitors/year) and physical stores (80M+ visitors/year). Revenue generated through sponsored products, banner ads, video campaigns, in-store digital displays, and targeted data-driven advertising placements.
3. Professional Services: Revenue from services including GAMMA Klusservice and Karwei advies aan huis (advisory services at home), custom window treatment measurement and installation, custom flooring measurement, and tool/equipment rental.
4. Franchise Fees and Central Services: Intergamma provides franchise formulas (GAMMA, Karwei) to independent entrepreneurs who are also shareholders. Revenue supports centralized functions including assortment planning, central purchasing, logistics, e-commerce, ICT, training, HRM, and marketing.

Pricing tiers

Go-to-market motion1 record

Distribution channels6 records

Marketing channels8 records

Core offering

Intergamma operates the GAMMA and Karwei DIY and home improvement retail franchises in the Netherlands and Belgium through nearly 400 physical stores, plus webshops and mobile apps. Its core offering encompasses building materials, tools, paint, flooring, window treatments, garden products, and home accessories sold to DIY consumers and professional tradespeople. The company provides value-added services including in-store paint mixing with color scanning, custom window treatment and flooring measurement, tool and trailer rental, professional installation (GAMMA Klusservice), and in-home advisory services.

Product overview

Intergamma operates as a franchise organization and self-exploiting retailer managing three distinct DIY/home improvement retail sub-brands across the Netherlands and Belgium. The portfolio consists of GAMMA (Netherlands and Belgium, focused on construction and building projects), Karwei (Netherlands, focused on decorative furnishing and styling), and their associated e-commerce platforms and mobile apps. The core offering centers on physical retail stores with ~400 locations, supported by omnichannel digital properties (webshops, consumer apps) generating ~200 million annual webshop visits, loyalty programs (GAMMA Voordeelpas and Club Karwei), and value-added services including custom paint mixing with color scanning, tool/trailer rental, in-home advisory services, and professional installation (GAMMA Klusservice). A major operational milestone is the new 95,000 m² BREEAM Excellent distribution center in Tiel (opened 2025), which consolidates logistics for all stores. The portfolio also includes retail media advertising (Intergamma Retail Media Groep / IRMG), EV fast charging stations via Shell Recharge, and DHL/PostNL parcel lockers as amenity partnerships. Sustainability credentials are highlighted through the 'duurzamere keuze' (more sustainable choice) label applied to ~1,000 products.

Differentiator

Problem solved

Functional benefit

Brands

• GAMMA: Building and construction DIY retailer. The best choice for every DIY customer, from inexperienced to professional.
• Karwei
• GAMMA Belgium

Products and services

• GAMMA Netherlands DIY Retail Chain DIY building and hardware retail chain in the Netherlands targeting construction-focused DIY customers and trade professionals, offering an extensive assortment across building materials, tools, paint, and related categories with approximately 30,000 articles available in the webshop and physical stores throughout the Netherlands.
• Karwei Decorative DIY and Home Furnishing Retail Chain Decorative DIY and home furnishing retail chain in the Netherlands targeting style- and atmosphere-focused consumers, with curated collections of curtains, floors, paint, wallpaper, lighting, furniture, and home accessories with strong emphasis on interior trends and styling advice.
• GAMMA Belgium DIY Retail Chain DIY retail chain operating in Belgium with 86 stores, ranked among the top three DIY retailers in the country, serving approximately 160,000 customers weekly and over 2 million website visitors monthly.
• GAMMA and Karwei E-commerce Webshops Online shopping platforms for GAMMA Netherlands, GAMMA Belgium, and Karwei offering approximately 30,000 articles each, content organized around DIY project themes, with product information, stock checks, configurators, and home delivery ordering.
• GAMMA and Karwei Consumer Mobile Apps Mobile applications for both GAMMA and Karwei enabling customers to browse products, check store inventory, place orders, and access personal accounts; the GAMMA Paint App additionally allows scanning colors from objects or images for paint matching.
• GAMMA Voordeelpas and Club Karwei Loyalty Programs Customer loyalty programs enabling consumers to earn points on purchases in-store and online at GAMMA and Karwei, with linked personal accounts that track purchase history and enable personalized promotions.
• GAMMA Klusservice Professional Installation Service Professional installation and DIY-assistance service offered through GAMMA stores that enables customers to outsource projects to qualified tradespeople.
• Karwei Advice at Home and In-Measuring Services Free in-home consultation and measuring service for window treatments and flooring provided by trained Karwei staff, plus full installation service for purchased products.
• GAMMA In-Store Paint Mixing and Color Scanner Service In-store paint mixing service at GAMMA stations, with a color scanner tool enabling customers to match any scanned color; Karwei offers Fairf sustainable paint and GAMMA offers Copperant sustainable paint lines, both certified EU Ecolabel paints produced by Baril Coatings.
• Tool and Trailer Rental Service Rental service for trailers and tools offered at GAMMA and Karwei stores, enabling customers to transport materials without owning vehicles.
• GAMMA and Karwei Sustainability Advisory Service In-store sustainability advisory service delivered by 384 trained sustainability advisors by 2025 who help customers identify affordable home energy-saving measures such as insulation, energy efficiency, and water conservation products.
• Intergamma Retail Media Groep (IRMG) Advertising Network Retail media advertising network launched September 2025 offering sponsored products, banner ads, video, and personalized campaigns across GAMMA and Karwei webshops, apps, and in-store digital displays, targeting 200 million annual webshop visitors and 80 million store visitors.
• Duurzamere Keuze (More Sustainable Choice) Sustainability Label Proprietary sustainability certification logo applied to approximately 1,000 products across wood, garden wood, and paint categories, developed with SMK and Milieu Centraal, indicating which environmental aspect a product outperforms against similar alternatives.

Quantifiable outcome

• 72% reduction in Scope 1 and 2 CO2 emissions versus 2021 baseline
• +4 more outcomes

Named customers1 record

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

Nine partnerships are on record, tiered core and minor.

• DHL Supply ChaincoreChannel Partner/ Reseller/ Distributor · 27 August 2025DHL Supply Chain is the logistics service provider responsible for the day-to-day operations of the new 95,000 m² distribution center in Tiel. DHL has operated Intergamma's existing distribution facilities in Tiel for multiple years and was a natural choice for the new flagship DC.
• DHLcoreChannel Partner/ Reseller/ Distributor · 21 October 2024DHL partnership for parcel locker installation at GAMMA and Karwei stores across the Netherlands. Approximately 70 stores were initially targeted, with expansion planned to all 293 Dutch stores. DHL handles all logistics operations of the new Tiel distribution center as well.
• PostNLminorChannel Partner/ Reseller/ Distributor · 21 October 2024PostNL parcel lockers already installed at GAMMA and Karwei stores before the DHL partnership. Enables customers to pick up and return parcels conveniently at store locations.
• SMK (Stichting Milieukeur)coreStrategic or Co-development Partner · 25 October 2023SMK (Milieu Keurmerk foundation) partnered with Intergamma to validate sustainability criteria and select which certifications would be used in Intergamma's sustainable procurement policy. Critical partner in the 'Duurzamere Keuze' (More Sustainable Choice) labeling program.
• Milieu CentraalcoreStrategic or Co-development Partner · 25 October 2023Dutch public information organization on environment and sustainability. Partnered with Intergamma to scientifically validate product sustainability claims and help customers identify truly sustainable products as part of the 'Duurzamere Keuze' labeling program.
• Baril CoatingsminorChannel Partner/ Reseller/ Distributor · 1 October 2023Paint supplier Baril Coatings, specialist in certified EU Ecolabel paint, was engaged as a new paint supplier for Intergamma. Baril produces Copperant paint for GAMMA and Fairf paint for Karwei — more sustainable paint alternatives available at the in-store mixing stations.
• MonteacoreStrategic or Co-development Partner · 8 March 2023Real estate developer Montea partnered with Intergamma to develop the new 95,000 m² distribution center in Tiel on the former AGC glass factory site. Montea developed the property as part of Intergamma's long-term logistics infrastructure strategy.
• Remmers BouwgroepminorImplementation/ SI/ Consulting Partner · 8 March 2023Construction company responsible for building the new 95,000 m² distribution center in Tiel, developed in close coordination with Intergamma and Montea.
• ShellcoreStrategic or Co-development Partner · 22 December 2021Shell and Intergamma partnered to build 1,400 fast EV charging points at GAMMA and Karwei parking lots in the Netherlands and Belgium. Customers can charge while shopping. The Shell Recharge fast chargers use 100% green electricity. With 380+ stores, nearly every customer is within 10 minutes of a charger. Jointly supports sustainability and customer convenience goals.

Scale indicators10 records

Recent moves8 records

Expansion highlights5 records

Broad incumbents

• B&Q: Kingfisher's UK home improvement banner; not a direct geographic competitor but a strategic comparable on DIY assortment, omnichannel loyalty, and sustainability strategy.
• Adeo: French parent company of Leroy Merlin, Bricoman, and other DIY formats; a broad incumbent with multi-format European DIY reach that competes with Intergamma's assortment and omnichannel model in Belgium.
• Kingfisher: UK-listed parent of B&Q and Castorama; a broad European DIY incumbent whose banners (especially Castorama) compete with GAMMA/Karwei assortment and omnichannel concepts across continental Europe, providing strategic and capital-markets benchmarking.

Direct peers

• Hubo: Belgian DIY retail chain, part of the Colruyt Group, with overlapping assortment in tools, paint, and building materials. Closest sub-scale peer to GAMMA Belgium and Karwei in the Belgian market.
• Hornbach: German-listed DIY home improvement retailer with large-format stores and professional customer focus, directly competing with GAMMA in the Netherlands and broader Benelux. Closely comparable assortment (building materials, tools, garden), franchise-vs-corporate contrast aside.
• Praxis: Maxeda-owned Dutch DIY chain with a comparable mid-market assortment of building materials, tools, and garden products. Direct competitor to GAMMA in the Netherlands across both physical and online channels.
• Brico: Belgian DIY retail chain (formerly part of Brico/Unilin/Maxeda) with a comparable broad assortment and franchise-style footprint, directly competing with GAMMA Belgium and Karwei for DIY consumers in Belgium.
• Leroy Merlin: Adeo Group's flagship DIY brand and a leading home improvement retailer in Belgium, directly overlapping with GAMMA Belgium and competing with Karwei on home improvement projects.
• Bauhaus: German-owned DIY retail chain with strong Benelux presence, competing head-to-head with GAMMA on assortment depth, store format, and trade/DIY customer overlap. Similar focus on broad building materials and project-based shopping.

Emerging players

• bol.com: Leading Dutch and Belgian online marketplace expanding into home improvement categories. Increasingly competing with GAMMA/Karwei webshops on selection, price, and delivery convenience, and a potential partner for retail media and last-mile services.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/intergamma

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles9 records

Subsidiaries2 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 Intergamma