Ks Construction (ks Groupe)

What Ks Construction (ks Groupe) does

KS Construction, founded in 1964 and headquartered in Bischheim (Alsace, France), is a family-owned general contracting company operating as the core entity of the multi-subsidiary KS Groupe. The company delivers building construction, design-and-execution project management, technical engineering (Bureau d'Études Techniques), structural work (gros œuvre), civil engineering, and all-trades general contracting (Tous Corps d'État) for new build and renovation projects. It holds sustainability credentials including BBC-Effinergie, Qualibat, MASE-UIC, RGE, and BREEAM certifications, with particular expertise in energy-efficient construction and work on SEVESO-classified industrial sites.

The business operates on a project-based revenue model with one-time, multi-year contracts quoted per project scope. KS Construction serves four primary customer segments: residential developers and property managers (Bouygues Immobilier, Edifipierre, Proudreed, Pôle Habitat), tertiary/commercial real estate, industrial clients (Amazon, STEF, Mars), and public sector clients (CMCO Schiltigheim hospital, Conseil Départemental du Bas-Rhin). Geographic operations are concentrated in the Grand Est region of France. Customer acquisition is driven by direct enterprise sales and long-standing developer relationships rather than broad marketing.

KS Groupe is structured as a vertically integrated ecosystem of 10 wholly-owned subsidiaries covering the full construction and real estate value chain: KS Aménagement (interior design), KS Énergie (electrical/automation), Polytherm (renewable energy/HVAC), E3C (electrical/home automation), Creatio (decoration/masonry), Paris Construction Est (regional construction), Altherm (structural/fluid engineering), Aréfim (commercial real estate), CICAL Synergies (industrial general contracting), and KS Promotion (property development). The group is family-controlled under the Sauer family, with no disclosed external institutional investment.

Name

Ks Construction (ks Groupe)

Legal name

KS construction

Website

https://ks-construction.fr

Company type

Private

Founded year

1964

Operating status

Operating

Short description

KS Construction (KS Groupe) is a family-owned French general contractor headquartered in Bischheim, delivering building construction, renovation, and project management across residential, commercial, industrial, and public sectors in the Grand Est region. It operates a 10-subsidiary vertically integrated construction group.

Ownership category

akta.pro rank

Product category

Construction Services

NAICS

Commercial and Institutional Building Construction (23622), Industrial Building Construction (23621), Nonresidential Building Construction (2362)

SIC

General Bldg Contractors - Nonresidential Bldgs (1540), Operative Builders (1531)

akta.pro primary industry

Office & Corporate Building Construction (IMAFACAA)

akta.pro secondary industries

Food & Beverage Processing Plant Construction (IMAFADAH), Healthcare Facility Construction (Hospitals, Clinics, Labs) (IMAFACAD), Government & Civic Building Construction (Courthouses, City Halls, Public Safety) (IMAFACAF)

Keywords

• General contracting services
• Construction project management
• Building renovation services
• Sustainable construction contracting
• Industrial construction works

Headquarters

HQ city

Bischheim

HQ country

France

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Construction Services: KS Construction generates revenue through general contracting services for construction projects. This includes project conception, design, execution, and delivery across residential, commercial, industrial, and public building segments. Revenue is project-based and one-time per contract.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels5 records

Core offering

KS Construction is a general contractor (entreprise générale) delivering building construction, renovation, and project management services in the Grand Est region of France. The company operates across all building segments including collective housing, offices, schools, hospitality, healthcare, industrial facilities, and logistics platforms, with in-house technical engineering, structural work, and all-trades execution capabilities.

Product overview

KS Groupe is a construction and real estate development group comprising multiple specialized subsidiaries. The core entity KS Construction provides master contracting, design & execution, technical study services, all-trade general contracting, and structural/civil engineering. Supporting subsidiaries include: KS Aménagement (interior design/renovation), KS Énergie (electrical/automation/hVAC), Polytherm (renewable energy/maintenance), E3C (electrical/home automation), Creatio (decoration/masonry), Paris Construction Est, Altherm (structural/fluid engineering), Aréfim (commercial real estate), CICAL synergies (general contracting/industrial), and KS Promotion (development/promotion). The group operates primarily in the Grand Est region of France, serving sectors including residential, commercial, industrial, healthcare, hospitality, and public facilities.

Differentiator

Problem solved

Functional benefit

Products and services

• KS Construction General Contracting Services
• KS Aménagement Interior Design & Renovation
• KS Énergie Electrical & Automation Services
• Polytherm Renewable Energy & HVAC Services
• E3C Electrical & Home Automation Services
• Creatio Decoration & Masonry Services
• Altherm Technical Engineering Studies
• KS Promotion Property Development Services

Named customers9 records

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

Eight partnerships are on record, tiered core and minor.

• KS AménagementcoreStrategic or Co-development PartnerInterior design, renovation, and fitting subsidiary of KS Groupe. Provides specialized interior design services and finishing work for group projects.
• KS ÉnergiecoreStrategic or Co-development PartnerEnergy systems subsidiary providing instrumentation, electrical engineering, automation, and HVAC services for group construction projects.
• PolythermcoreStrategic or Co-development PartnerRenewable energy and HVAC specialist. Provides heating, sanitation, air conditioning, ventilation, and maintenance services for group projects.
• E3CcoreStrategic or Co-development PartnerElectrical and climate control subsidiary providing electricity, air conditioning, heating, ventilation (VMC), home automation, and security systems.
• CreatiominorStrategic or Co-development PartnerInterior decoration and masonry services for finishing work on group construction projects.
• AréfimminorStrategic or Co-development PartnerReal estate investment company specializing in commercial real estate. Collaborative partner for commercial development projects.
• CICAL SynergiesminorStrategic or Co-development PartnerGeneral contractor with expertise in industrial processes and engineering studies. Provides specialized industrial construction capabilities.
• KS PromotioncoreStrategic or Co-development PartnerProperty developer and operator within KS Groupe, providing development and project assembly capabilities for the group.

Scale indicators2 records

Recent moves5 records

Expansion highlights3 records

Direct peers

• Bouygues Construction: Major French general contractor with overlapping nonresidential, residential, and public-sector construction capabilities. Comparable all-trades general contracting model; KS's customer Bouygues Immobilier sits within the same group.
• Eiffage Construction: Large French general contractor active in building, energy, and civil engineering across Alsace and nationally. Comparable nonresidential building and energy-renovation capabilities, including BBC/HQE-certified delivery.
• Spie Batignolles: French general contractor covering nonresidential building, civil engineering, and energy works across regions including Grand Est. Comparable multi-specialty structure and public/private sector mix.
• Demathieu Bard: Independent French GC active in building, infrastructure, and industrial construction, with presence in eastern France. Comparable nonresidential building delivery and family-influenced governance.
• Rabot Dutilleul: Northern French family-owned general contractor active in nonresidential, residential, and sustainable construction. Comparable family ownership, regional focus, and energy-efficiency credentials.
• NGE (Nouvelles Générations d'Entrepreneurs): French multi-specialty construction group covering building, civil engineering, and energy. Comparable regional building execution and growing energy-renovation overlap.
• GCC (Générale de Construction): Independent French general contractor with strong regional delivery of nonresidential buildings and energy-efficient construction. Comparable BBC/HQE positioning and project scale.
• Léon Grosse: Family-owned French general contractor with strong regional positions and similar general contracting/all-trades capability across residential, commercial, and industrial buildings. Closely comparable ownership profile and project mix.
• Vinci Construction: One of France's largest general contractors delivering commercial, healthcare, industrial, and public building projects nationally and internationally. Comparable all-trades contracting and complex occupied-site execution.

Broad incumbents

• Fayat Bâtiment: Building division of the Fayat group, a large diversified French construction conglomerate. Comparable general contracting for nonresidential buildings but operating as part of a much broader infrastructure and industrial portfolio.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks2 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/ksgroupeconstruction
• LinkedInlinkedin.com/company/ks-construction-ks-groupe
• Instagraminstagram.com/ks_groupe

Compliance6 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Subsidiaries10 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 Ks Construction (ks Groupe)