Name

GK

Legal name

GK Gruppen AS

Website

https://gk.no

Company type

Private

Founded year

1964

Operating status

Operating

Headcount range

1,001–5,000 employees

Ownership category

akta.pro rank

Headquarters

HQ city

Oslo

HQ country

Norway

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B and B2C

Offering type

Services

Cost components

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

Revenue model

1. Project / Construction services (Entreprise): GK delivers large multi-disciplinary technical construction projects including ventilation, building automation, electrical, plumbing, and refrigeration. Revenue is project-based, typically won through competitive tendering. Projects range from new construction (e.g., Vikingtidsmuseet new building, 286 MNOK contract) to rehabilitation (e.g., Vikingtidsmuseet old building, 48 MNOK contract). These are typically multi-year engagements with general contractors or directly with building owners.
2. Service and maintenance (Service): GK provides ongoing service, maintenance, and technical operations for building systems including heating, ventilation, electrical, and plumbing. Service includes both planned preventive maintenance and emergency response. For customers like Porsche Center Oslo, service also includes digital monitoring via Smart digital driftsstøtte. Revenue is recurring through service contracts.
3. Energy optimization and consulting: GK provides energy mapping and analysis services for buildings, producing reports with quick-win measures, investment costs, payback periods, and emission reduction estimates. GK also offers financing so energy savings measures can be covered through operating budgets. This service generates both one-time project fees and ongoing optimization engagement.
4. Private residential services: GK delivers plumbing and electrical services directly to private homeowners, including kitchen and bathroom renovation, hot water heater replacement, and outdoor faucets. Revenue is transaction-based per service call or project.
5. Technical due diligence: GK provides technical assessments of building installations for property buyers and owners, evaluating condition, future upgrade needs, lifecycle costs (LCC), and compliance. Revenue is fee-based per assessment.

Go-to-market motion2 records

Distribution channels3 records

Marketing channels7 records

Core offering

GK is Scandinavia's leading supplier of building technology, delivering multi-disciplinary technical contracting (ventilation, building automation, electrical, plumbing, refrigeration and heat pumps) for commercial, public, and residential buildings. The company bundles these trades as totalteknisk entreprise (total technical contracting), supports them with a proprietary cloud-based monitoring platform (GK Cloud / Smart digital driftsstøtte), and provides recurring service, maintenance, and energy optimization across 42 offices in Norway.

Product overview

GK is a multi-discipline technical contractor and service partner operating primarily in Norway (with sister companies in Sweden and Denmark under the GK Gruppen umbrella). The company delivers a unified portfolio of five core technical trades — Ventilasjon (ventilation), Byggautomasjon (building automation), Elektro (electrical), Rør (plumbing/pipe), and Kulde og varmepumpe (refrigeration and heat pumps) — both individually and bundled as a totalteknisk entreprise (total technical contracting) service. These core trades are supported by a suite of specialized service offerings including Smart digital driftsstøtte (cloud-based digital monitoring and analytics), Energioptimalisering (energy optimization), Energirådgivning (energy advisory), Datasenter (data center), Renrom (cleanroom), Solcelleanlegg (solar PV), Ladeanlegg (EV charging infrastructure), Teknisk drift (technical operations), Service og vedlikehold (maintenance), and Vannbehandling (water treatment). GK serves both commercial (enterprise) and residential (private) market segments across 42 offices.

Differentiator

Problem solved

Functional benefit

Brands

• GK Cloud: A cloud-based service platform for building management and technical operations
• GK Whistle

Products and services

• Ventilasjon (Ventilation) Design, installation, and maintenance of ventilation systems — including demand-controlled ventilation (DCV / behovsstyrt ventilasjon) — to ensure indoor air quality and energy efficiency in commercial, public, and residential buildings.
• Byggautomasjon (Building Automation) Building automation and control systems (BMS / SD-anlegg) that coordinate HVAC, lighting, fire safety, and energy systems for optimal building performance, often delivered with GK Cloud-based SCADA and monitoring.
• Elektro (Electrical) Full electrical installation services for commercial and residential buildings, including low- and high-voltage systems, reserve power, UPS, lighting, and security systems.
• Rør (Plumbing/Pipe) Plumbing and piping installation for water supply, sanitation, heating systems, and water treatment in buildings of all types, including residential and commercial projects.
• Kulde og varmepumpe (Refrigeration and Heat Pump) Cooling and heat pump solutions for climate control, process cooling, and energy-efficient temperature management in buildings and industrial applications.
• Totalteknisk entreprise (Total Technical Contracting) Single-contract, multi-disciplinary technical contracting covering all engineering trades in a unified delivery, reducing interface complexity and improving coordination across HVAC, electrical, plumbing, automation, and refrigeration.
• Service og vedlikehold (Service and Maintenance) Ongoing maintenance and service agreements for all technical building systems — heating, ventilation, electrical, and plumbing — to ensure reliability and longevity across GK's commercial and public-sector clients.
• Teknisk drift (Technical Operations) Operational management of technical building systems ensuring continuous, efficient, and safe building performance for owners and operators.
• Smart digital driftsstøtte Cloud-based digital monitoring and analytics service using GK Cloud to collect real-time data from thousands of automated control points on a building's technical systems, identifying deviations and optimizing energy performance on a daily basis.
• Energirådgivning og -ledelse (Energy Advisory and Management) Consulting and management services for energy optimization, including energy mapping, savings reports, and implementation of energy reduction measures.
• Energioptimalisering i bygg (Energy Optimization in Buildings) Comprehensive energy analysis and optimization of technical building systems to reduce energy consumption, costs, and greenhouse gas emissions, including identification of quick-win measures, investment cost estimates, payback periods, and emission reduction estimates.
• Renrom og renluftsteknikk (Cleanroom and Clean Air Technology) Specialized ventilation and air treatment solutions for controlled environments requiring stringent air purity standards, including healthcare and laboratory facilities.
• Solcelleanlegg for næringsbygg (Solar PV Systems for Commercial Buildings) Solar photovoltaic system design and installation for commercial and industrial buildings, integrated with broader technical installations.
• Sertifisering av bygg (Building Certification) Assistance with obtaining building certifications and compliance assessments, including FutureBuilt, Passivhaus, and Miljøfyrtårn standards for commercial properties.
• Medisinske gasser (Medical Gases) Installation and maintenance of medical gas systems for healthcare facilities, supporting hospital and clinical environments.
• Vannbehandling (Water Treatment) Water treatment solutions to optimize energy utilization and quality of water systems in commercial buildings.
• Ladeanlegg til borettslag, sameier og næringsbygg (EV Charging Infrastructure) Design, installation, and maintenance of electric vehicle charging infrastructure for residential complexes, housing cooperatives, and commercial buildings, including heavy vehicles.
• Datasenter (Data Center Technical Delivery) End-to-end technical delivery for data centers, covering all engineering trades — power, cooling, automation, plumbing, and electrical — from design through construction, testing, and ongoing operations, delivered as a single integrated package.
• Teknisk takst / due diligence (Technical Due Diligence) Independent technical assessment of building systems condition and value, using the NS 3424:2012 standard, covering lifecycle costs (LCC), upgrade requirements, and compliance for property buyers and owners.

Quantifiable outcome

• 188,000 kWh energy reduction and 370,000 NOK savings per year for Porsche Center Oslo (8,000 sqm) after 12 months of Smart digital driftsstøtte
• +5 more outcomes

Named customers13 records

Segments6 records

Ideal customer profiles6 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Eleven partnerships are on record, tiered flagship / core, core and minor.

• FutureBuilt, Grønn Byggallianse, and Skiftflagship / coreStrategic or Co-development Partner · 26 February 2025FutureBuilt, Grønn Byggallianse (Green Building Alliance), and Skift initiated an opprop (public petition) for predictable climate requirements in Norway's building technical regulations (TEK). GK signed this petition, calling for climate requirements to cover the entire building and entire lifecycle, not just the structural envelope. GK consernsjef Kim Robert Lisø signed on behalf of GK, emphasizing that today's climate requirements overlook 17-40% of building emissions from technical installations.
• AF Gruppenflagship / coreStrategic or Co-development PartnerAF Gruppen is the main contractor on the Vikingtidsmuseet project, with GK as a multi-technical subcontractor delivering ventilation, automation, plumbing, and electrical. GK was brought in during an early phase (intensjonsavtale signed beginning of 2021) as a collaborative samspills (co-development) arrangement. The partnership has been extended to include rehabilitation of the historic Vikingskipshuset building (48 MNOK contract) in addition to the original new building contract (286 MNOK). AF Gruppen is a major Norwegian construction and civil engineering group.
• StatsbyggcoreStrategic or Co-development PartnerStatsbygg (Norwegian government's building commissioner) is the building owner and client for the Vikingtidsmuseet project. GK delivers technical installations under contract with AF Gruppen. The project is being delivered as a samspillsentreprise (collaborative contract) where GK, AF Gruppen, and Statsbygg developed the project together from an early phase.
• SwegoncoreStrategic or Co-development PartnerSwegon is a leading supplier of indoor climate solutions including ventilation systems. GK partnered with Swegon on the Glynitveien 33 rehabilitation project in Ski, where a Swegon RX Gold ventilation unit was reused from KLP Eiendom in Trondheim. Swegon also provides update kits (reservedeler/utskiftningskits) that allow individual components to be replaced, extending equipment life by approximately 20 years. Both companies are partners in Grønn VVS.
• KLP EiendomminorOthersKLP Eiendom provided a surplus Swegon RX Gold ventilation unit from their Trondheim office that was reused in Höegh Eiendom's Glynitveien 33 rehabilitation project. The unit, from 2014, was identified by GK as suitable for reuse, demonstrating circular economy practices.
• Höegh EiendomcoreStrategic or Co-development PartnerHöegh Eiendom is a property developer and building owner. GK served as VVS contractor for a rehabilitation project at Glynitveien 33 in Ski, achieving 50% reuse of VVS installations and 36.4% lower climate emissions. The project set ambitious sustainability goals of 100% reuse.
• Grønn VVS (Erichsen & Horgen)coreStrategic or Co-development PartnerGrønn VVS is a research initiative (FoU-prosjekt) funded by Norges Forskningsråd (Research Council of Norway) and led by Erichsen & Horgen. The project aims to halve CO2 emissions from VVS installations by 2025. GK, Höegh Eiendom, Swegon, and KLP Eiendom are all partners in this initiative. GK's Mads Mysen (Fagdirektør) serves as an expert contributor. The Glynitveien 33 project was the first with so many partners involved.
• Enovaflagship / coreOthersEnova is a Norwegian government enterprise providing financial support for energy efficiency measures in buildings. Enova offers subsidies covering up to 25% of project costs (max 10 MNOK) for energy improvements, and up to 50% (max 400,000 NOK) for energy mapping in commercial buildings. From January 2026, extra support is available for conversion to waterborne heating systems. GK actively references Enova support as a financing option for customers undertaking energy optimization projects. Enova will stop support for heating centers in summer 2027.
• Varden EntreprenørminorChannel Partner/ Reseller/ DistributorVarden Entreprenør was the main contractor for the Glynitveien 33 rehabilitation project in Ski, with GK as the VVS (heating, plumbing, ventilation) subcontractor.
• Rørentreprenørene Norge (RørNorge)minorStrategic or Co-development PartnerGK's sustainability director Karina Nilsen participated in a working group with Rørentreprenørene Norge (Norwegian Plumbing Contractors Association) and NHO Byggenæringen to produce a joint report 'Åpenhetsloven 2025' providing the plumbing industry with a common fact base for transparency reporting under Norway's Transparency Act. The group included representatives from AssemblinCaverion, Bravida, and other major industry players.
• NHO ByggenæringenminorStrategic or Co-development PartnerNHO Byggenæringen (NHO Construction Industry) collaborated with Rørentreprenørene Norge and major plumbing contractors including GK on the 'Åpenhetsloven 2025' report. Jonas Blad Måøy, analysesjef in NHO Byggenæringen, conducted the analysis and interpretation of findings on import risks for plumbing products.

Scale indicators6 records

Recent moves6 records

Expansion highlights6 records

Broad incumbents

• Skanska: Global construction and project development group with a Nordic presence and technical building installation capabilities. Comparable on large public and cultural projects but much broader than GK's focused technical-trade positioning.
• YIT: Large Finnish construction and building services group offering technical building solutions, renovation, and smart building services. Comparable in technical disciplines and Nordic presence, but broader and more construction-heavy than GK.
• NCC: Major Nordic construction group with technical installation capabilities as part of a broader construction portfolio. Overlaps with GK on large commercial and public building projects but operates as a general contractor with technical work as one of several offerings.
• Siemens Smart Infrastructure: Global incumbent in building automation, energy management, and HVAC controls with strong Nordic presence. Comparable through its BMS/SD-anlegg and digital monitoring offerings that overlap with GK Cloud and Smart digital driftsstøtte.

Direct peers

• Assemblin: Nordic multi-technical contractor offering electrical, HVAC, and plumbing installation and service across Sweden, Norway, and Finland. Directly competes with GK in Scandinavian commercial and public building projects and service contracts.
• Bravida: Nordic market leader in multi-technical building services (electrical, HVAC, plumbing) with operations across Sweden, Norway, Finland, and Denmark. Directly comparable to GK as a multi-trade technical contractor serving commercial and public buildings with both project and recurring service revenue.
• Caverion: Northern European provider of technical building solutions, building automation, and energy services with strong Nordic presence (including via the AssemblinCaverion combination). Directly comparable multi-trade delivery and digital monitoring offerings.

Others

• AF Gruppen: Norwegian general contractor and key counterparty of GK on landmark projects such as Vikingtidsmuseet. Comparable as a partner in the same Norwegian building value chain, though operating as a GC rather than technical specialist.
• Multiconsult: Norwegian engineering and design consultancy providing technical due diligence and prosjektering on GK-led projects such as Glynitveien 33. Comparable as a project partner in the Norwegian building ecosystem rather than a direct installation competitor.
• Swegon: European indoor climate and ventilation equipment manufacturer partnering with GK on projects including the Glynitveien 33 reuse initiative. Adjacent rather than direct: an equipment supplier and circular-economy partner to GK's installation and service work.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks6 records

Key highlights6 records

Customer concentration

• YouTubeyoutube.com/@gk-norge
• Facebookfacebook.com/GKNorge
• LinkedInlinkedin.com/company/gk-gruppen
• Instagraminstagram.com/gk_gruppen
• Xx.com/GKNorge

Revenue estimate

Valuation estimate

Number of profiles

Profiles11 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 GK