Graner + Partner GmbH

What Graner + Partner GmbH does

Graner + Partner GmbH is a privately held German engineering consultancy headquartered in Bergisch Gladbach, North Rhine-Westphalia, founded around 1959 and operating for over 65 years. The firm specializes in building acoustics, thermal building physics, sound immission protection, room acoustics, audio and media technology, measurement and controlling, testing facilities, and certified sustainability consulting (DGNB, LEED, BREEAM). It is registered with the Ingenieurkammer-Bau NRW and maintains professional liability insurance for engineering services. Its clients include architects, developers, and public/institutional building owners requiring specialist technical engineering on complex new-build and renovation projects such as concert halls, opera houses, conference centers, stadiums, and parliamentary buildings. Notable reference projects include the World Conference Center Bonn (with a Meyer Sound Constellation acoustic reinforcement installation), Kö-Bogen Düsseldorf, the Deutscher Bundestag former Plenary Chamber, Oper Leipzig, Congress Center Hamburg, Coque Luxembourg, and Stade de Luxembourg.

The firm operates through a headquarters office in Bergisch Gladbach, a dedicated media technology branch in Bergisch Gladbach/Bensberg, and three wholly-owned subsidiaries: GRANER INGENIEURE GmbH in Leipzig, GRANER PETER @ Associés in Luxembourg, and Graner+Partner Sp. z o.o. in Wrocław, Poland. Management is led by Geschäftsführende Gesellschafterin Brigitte Graner and Geschäftsführer Bernhard Graner-Sommer, the latter also serving as Vice President of the regional Chamber of Industry and Commerce. Headcount is approximately 26 employees. Revenue is generated through project-based consulting engagements with pricing that is not publicly disclosed. Marketing relies on the company website, social media channels (LinkedIn, Instagram, YouTube), and earned media through regular trade-press coverage in industry publications.

Name

Graner + Partner GmbH

Legal name

Graner + Partner GmbH

Website

https://graner-ingenieure.de

Company type

Private

Founded year

1959

Operating status

Operating

Headcount range

11–50 employees

Short description

Graner + Partner GmbH is a 65-year-old German engineering consultancy headquartered in Bergisch Gladbach, specializing in building acoustics, thermal building physics, and AV/media technology consulting for architects, developers, and public institutional clients across Germany, Luxembourg, and Poland.

Ownership category

akta.pro rank

Headquarters

HQ city

Bergisch Gladbach

HQ country

Germany

HQ region

Europe

Offices5 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Distribution channels1 record

Marketing channels6 records

Core offering

Graner + Partner GmbH is a specialist engineering consultancy that designs acoustic, thermal, and media-technology solutions for buildings. The firm delivers nine interconnected services—thermal building physics, certified sustainability (DGNB/LEED/BREEAM), building acoustics and sound insulation, sound immission protection, room acoustics, audio and media technology, measurement and controlling, testing facilities, and expert opinions—for new construction and renovation projects across Germany, Luxembourg, and Poland.

Product overview

Graner + Partner GmbH is an engineering firm providing specialized consulting services across building physics and acoustics disciplines. The company operates as a unified service portfolio rather than a software platform, offering nine interconnected specialist areas including thermal building physics, certified sustainability, building acoustics, sound immission protection, room acoustics, audio and media technology, measurement/controlling, testing facilities, and expert witness services. These services are delivered through the headquarters in Bergisch Gladbach, Germany, and four subsidiary/branch offices located in Leipzig, Luxembourg, and Wroclaw (Poland). The company has been operating for over 65 years and serves clients across Germany and internationally.

Differentiator

Problem solved

Functional benefit

Products and services

• Thermische Bauphysik (Thermal Building Physics) Engineering consulting for thermal performance analysis of buildings, including energy efficiency assessments and thermal insulation consulting for architects, developers, and institutional building owners.
• Zertifizierte Nachhaltigkeit (Certified Sustainability) Sustainability certification consulting supporting clients in achieving DGNB, LEED, and BREEAM green building ratings and environmental certifications.
• Bauakustik / Schallschutz (Building Acoustics / Soundproofing) Engineering services for building acoustics and sound insulation, including design consultation to ensure optimal acoustic performance in residential, commercial, and industrial buildings.
• Schallimmissionsschutz (Sound Immission Protection) Assessment and consulting services for noise immission protection, helping projects comply with environmental noise regulations and minimize sound impact on surrounding areas.
• Raumakustik (Room Acoustics) Room acoustics design and optimization for concert halls, theaters, offices, educational facilities, and other spaces requiring specific acoustic characteristics.
• Ton- und Medientechnik (Audio and Media Technology) Planning and consulting for audio and media systems including sound reinforcement, conference systems, and multimedia solutions for venues and buildings.
• Messtechnik / Controlling (Measurement Technology / Controlling) Measurement and controlling services for on-site acoustic and thermal performance verification, including testing and quality assurance of completed installations.
• Prüfeinrichtungen (Testing Facilities) Testing facilities and equipment for conducting accredited acoustic and building-physics measurements and evaluations.
• Sachverständigengutachten (Expert Opinions) Expert witness services and technical assessments for legal proceedings, insurance claims, and regulatory compliance documentation related to building acoustics and physics.

Named customers10 records

Segments2 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature1 record

Scale indicators1 record

Recent moves1 record

Expansion highlights5 records

Direct peers

• SoundPLAN: Specialist in noise immission modeling and sound protection software/services. Comparable to Graner's Schallimmissionsschutz practice and competes for environmental noise mandates across Europe.
• Wölfel Engineering: German engineering firm offering acoustics, vibration, and structural dynamics services. Comparable in technical discipline overlap (building acoustics, measurement) and client types (industrial, infrastructure, public sector).
• Köhler + Partner (Stuttgart): Independent German consultancy focused on building and room acoustics. Direct niche peer to Graner + Partner for cultural venues, offices, and residential developments.
• Müller-BBM: German acoustic engineering and building-physics consultancy offering building acoustics, room acoustics, sound immission, and measurement services. Direct competitor to Graner + Partner in the German institutional and industrial acoustics market.
• Akustikbüro Schwartzenberger: German room and building acoustics consultancy. Niche peer with similar service profile to Graner + Partner, focused on cultural and educational venues.
• Peutz Group: Netherlands-based independent consultancy specializing in acoustics, building physics, and sustainability. Comparable in scope and niche positioning to Graner + Partner, with cross-border European project reach.

Broad incumbents

• Ramboll: International engineering consultancy with acoustics, building physics, and sustainability capabilities. Overlaps with Graner + Partner on European institutional projects but competes from a much broader service platform.
• Arup: Global engineering and design firm with a dedicated acoustics team. Addresses the same concert halls, conference centers, and parliamentary projects as Graner + Partner but typically as the lead multi-disciplinary consultant.
• Buro Happold: Global multi-disciplinary engineering consultancy with a strong built-environment acoustics practice. Competes for the same institutional and cultural venue commissions but as part of a broader structural, MEP, and sustainability portfolio.

Emerging players

• Four Engineering: German engineering firm with acoustics and building-physics offerings. Smaller-scope competitor with growing presence in DACH cultural and commercial projects.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat5 records

Key risks5 records

Key highlights6 records

Customer concentration

• YouTubem.youtube.com/channel/UCuKYCzTjs8hGtSo2yzUy6Ig
• LinkedInlinkedin.com/company/graner-partner-ingenieure-gmbh
• Instagraminstagram.com/granerundpartner

Compliance3 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Subsidiaries4 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 Graner + Partner GmbH