S+B Inbau

What S+B Inbau does

S+B Inbau s.àr.l. is a Luxembourg-headquartered interior fit-out contractor that delivers multi-discipline interior construction services for public institutions, financial-sector tenants and select private clients. The company's portfolio spans nine integrated service lines: drywall, cooling ceilings, general contracting, residential fit-out, steel and metalwork, in-house joinery, interior doors, acoustic treatment, and modular partition walls. Its most differentiated capability is radiant ceiling heating and cooling systems, protected by European Patent EP 1457614 (granted 2006), for which the company self-identifies as the Luxembourg market specialist. Metalwork and structural steel are produced at a wholly-owned subsidiary, S+B Inbau GmbH, in Irrel, Germany.

The business operates as a project-based, tender-driven contractor. Revenue is non-recurring and tied to individual construction contracts; pricing is awarded through competitive public procurement and private tendering rather than published rate cards. The customer base is concentrated in Luxembourg government and institutional buyers — including the European Court of Justice, European Court of Auditors, Cité de la Sécurité Sociale, CCK Centre de Conférences and Lycée Junglinster — alongside financial-sector occupiers such as BCEE, Deutsche Bank, KPMG, J.P. Morgan and EY. The firm is privately held and insider-controlled: the three managing directors, Daniel Hack, Christian Wolff and Dirk Eppers, completed a full takeover in 2013. Headcount stands at roughly 90-95, and disclosed revenue was €28.9M in 2021, recovering from a €22.0M pandemic dip in 2020 against a €30.4M base in 2019; the company separately claims revenue above €35M. Certifications include ISO 9001 (held since 2002), ESR, SuperDrecksKëscht, Made in Luxembourg, and Sécher & Gesond mat System, which support eligibility for institutional tenders.

Name

S+B Inbau

Legal name

S+B Inbau s.àr.l.

Website

https://sb-inbau.lu

Company type

Private

Founded year

1998

Operating status

Operating

Headcount range

11–50 employees

Short description

S+B Inbau is a Luxembourg-headquartered interior fit-out contractor offering drywall, patented radiant cooling ceilings, metalwork, joinery, acoustic and modular partition services to public institutions and financial-sector clients primarily in Luxembourg.

Ownership category

akta.pro rank

Product category

Interior Construction Services

NAICS

Building Finishing Contractors (2383), Drywall and Insulation Contractors (238310), Plumbing, Heating, and Air-Conditioning Contractors (238220)

SIC

Construction - Special Trade Contractors (1700), General Bldg Contractors - Nonresidential Bldgs (1540), Sheet Metal Work (3444), Metal Doors, Sash, Frames, Moldings & Trim (3442)

akta.pro primary industry

Drywall, Partitions & Suspended Ceilings (IMAFANAG)

akta.pro secondary industries

Painting, Decorating & Wallcoverings (IMAFANAI), Metal Cladding, Soffits & Trim (Non-Panel Components) (IMADACAM), New Construction HVAC Rough-In & Final Set (Residential/Light Commercial) (HSAOAGAL)

Keywords

• Interior fit-out services
• Cooling ceiling systems
• Drywall construction
• Metalwork and joinery
• Modular partition walls

Headquarters

HQ city

Niederanven

HQ country

Luxembourg

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Interior Fit-out Contracts: Project-based revenue from interior fit-out contracts including dry construction, carpentry, metalwork, and acoustic solutions. Revenue is non-recurring and tied to individual construction projects. Revenue 2019: €30,358,438; 2020: €22,020,686; 2021: €28,939,732.

Go-to-market motion1 record

Distribution channels3 records

Core offering

S+B Inbau is an interior construction company specializing in drywall construction, cooling ceilings (with proprietary European patented radiant ceiling technology), interior doors, room acoustics, modular partition walls, steel and metalwork, and joinery services. The company operates as a general contractor and specialist subcontractor, executing interior fit-out projects ranging from small residential attic conversions to multi-story commercial and institutional buildings for public and private sector clients in Luxembourg.

Product overview

S+B Inbau is a single unified service offering—interior finishing and construction services—not a software platform. The portfolio consists of nine integrated service lines: (1) Trockenbau/Kühldecken for drywall and cooling ceilings (their specialty, with a European patent), (2) Generalunternehmer Innenausbau as general contractor coordination, (3) Privatkunden for residential work, (4) Stahl- und Metallbau for structural metalwork, (5) Schreinerei for in-house joinery and custom millwork, (6) Innentüren for door systems, (7) Raumakustik for acoustic treatment, and (8) Systemtrennwände for modular partitions. These services are offered both independently and in combination, allowing S+B Inbau to act as a one-stop general contractor for complete interior fit-out projects.

Differentiator

Problem solved

Functional benefit

Products and services

• Trockenbau (Drywall Construction) Drywall and dry construction services for interior walls and ceilings, delivered by qualified project managers and trained specialist fitters for commercial, institutional, and residential clients.
• Kühldecken (Cooling Ceilings) Cooling ceiling systems using proprietary radiant ceiling technology for heating and cooling buildings; S+B Inbau is the recognized specialist for cooling ceilings on the Luxembourg market and holds European Patent EP 1457614 granted in 2006.
• Generalunternehmer Innenausbau (General Contractor for Interior Fit-Out) General contracting services for interior finishing projects of any size, coordinating S+B Inbau's in-house specialties with competent partner firms to deliver complete fit-out solutions.
• Privatkunden (Private Residential Clients) Interior finishing services for private residential customers, ranging from small attic conversions to multi-story residential buildings.
• Stahl- und Metallbau (Steel and Metalwork) Steel and metal construction services including railings, balconies, canopies, wall and ceiling claddings, doors, gates, fences, stairs, and custom glass-steel constructions, supported by a dedicated metalwork workshop at the Irrel, Germany production facility.
• Schreinerei (Joinery Workshop) In-house joinery workshop producing custom woodwork including reception counters, built-in furniture, custom millwork, wall and ceiling claddings, exterior HPL facades, interior and fire-rated doors, acoustic elements, and solid surface furniture in Corian and HiMacs.
• Innentüren (Interior Doors) Supply and installation of interior doors in wood, metal, and glass from own production and from renowned brand manufacturers, including fire-rated and acoustic doors.
• Raumakustik (Room Acoustics) Sale and installation of acoustic absorbers and cladding from renowned manufacturers in fabric, wood, or metal, in various shapes and dimensions, for commercial, institutional, and high-end residential spaces.
• Systemtrennwände (Modular Partition Walls) Modular partition wall systems with integrated acoustic and fire protection solutions, featuring laminate, wood veneer, glass, and metal surfaces for office and institutional interiors.

Quantifiable outcome

• Revenue over €35 million annually
• +1 more outcomes

Named customers18 records

Segments2 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature1 record

Partnerships

One partnership is on record.

• Specialized Subcontractor FirmscoreOthers · 1 January 1998S+B Inbau partners with specialized subcontractors for aspects of general contracting projects where in-house capabilities are supplemented. This allows the company to act as general contractor on large multi-discipline projects while maintaining quality control on core specialties.

Scale indicators5 records

Recent moves11 records

Expansion highlights4 records

Direct peers

• Tralux: Major Luxembourg-based general contractor and interior fit-out firm serving public infrastructure and commercial construction. Direct comparable given the same local market, public sector client base, and multi-trade interior finishing capabilities.
• Hörmann: European manufacturer and supplier of interior doors, frames, and acoustic door systems. Comparable for S+B Inbau's interior door product line, with similar fire-rated and acoustic specifications.
• Cegelec Luxembourg: Subsidiary of Vinci Energies providing HVAC, electrical, and multi-technical building services in Luxembourg. Comparable for cooling ceiling, mechanical, and building equipment contracting work.

Regional players

• Reynaers Aluminium: Belgian-headquartered manufacturer of aluminium building envelope systems including interior partition and door solutions. Comparable on metal-based interior systems and proximity to the BeNeLux market.

Broad incumbents

• SPIE: European multi-technical services group covering HVAC, electrical, and interior building systems. Comparable for cooling ceiling installation and integrated building services on commercial/institutional projects.
• Strabag: European construction group with interior fit-out, drywall, and building services operations. Comparable as a large incumbent with similar interior finishing product offerings.
• Eiffage Construction: Major French construction group with interior fit-out, drywall, and finishing contracting capabilities. Comparable on multi-discipline interior work for institutional and commercial buildings.
• ENGIE Solutions Luxembourg: Broader facility services and HVAC provider operating in Luxembourg. Comparable on cooling/heating systems installation and large institutional building projects, though it spans a wider portfolio beyond interior fit-out.

Emerging players

• Schüco: European building envelope specialist providing metal/glass facades, partition systems, and interior fit-out components. Comparable on modular partition walls and metalwork interior systems.
• Knauf: Global drywall and insulation systems manufacturer with installer networks. Comparable as a drywall systems provider in the same specialty, though operating as a manufacturer/integrator rather than a local fit-out contractor.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks7 records

Key highlights7 records

Customer concentration

Compliance5 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Subsidiaries1 record

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 S+B Inbau