Keggenhoff Partners

What Keggenhoff Partners does

Keggenhoff Partners is a privately held German architecture and interior design firm founded in 2001 by Sabine Keggenhoff and Michael Than in Arnsberg-Neheim, Sauerland, operating under the trade name KEGGENHOFF | PARTNER. The firm combines the disciplines of architecture and interior design into a single integrated service, describing its methodology as working "from the inside to the outside, from the outside back." Its core technology is an interdisciplinary design practice rather than a software product, with particular specialization in "Bauen im Bestand" (building in existing contexts) — adaptive reuse, conversion, and renovation projects that preserve existing structures while introducing contemporary functions. The portfolio spans cultural venues (Elbphilharmonie Hamburg interior), corporate headquarters (Telekom Campus Bonn, Magenta Mitte Berlin, Dallmer Office, Henkel Kasino, Wirtgen Invest Family Office), retail flagships (Falke across Berlin, Zurich, Moscow, Bicester, Ascona; Zwilling Düsseldorf; Burlington trade fair stands), educational and religious projects (Erzbischöfliches Berufskolleg Köln, St. Victor parish hall, Christuskirche Gemeindehaus, K3 Citypastoral), and private commissions.

The firm is led by Prof. Sabine Keggenhoff, who has held a professorship in Interior Architecture at the Detmold School of Architecture and Interior Design (TH OWL) since 2020 and serves on the University Council of FH Dortmund, giving the firm an academic and industry-association presence through bdia, AKNW, and IFI. Michael Than serves as co-founder and is the listed recruitment contact. Headcount is not publicly disclosed; the firm is independently operated with no parent company, no funding rounds, no subsidiaries, and no documented M&A activity.

Revenue is generated exclusively through project-based professional services engagements, won primarily via architectural competitions and direct commission from enterprise, institutional, religious, and private clients. Pricing is project-specific and not publicly disclosed. Operations are Germany-wide (Berlin, Hamburg, Bonn, Cologne, Düsseldorf, Arnsberg, Siegen) with selected international projects in Switzerland, the UK, Russia, and Spain. Marketing is predominantly reputation-based, relying on 40+ design awards (German Design Awards, IDA Awards, Iconic Awards, bdia prizes), editorial coverage in major architecture publications, and academic teaching rather than paid acquisition.

Name

Keggenhoff Partners

Legal name

Keggenhoff Partners

Website

https://keggenhoff.de

Company type

Private

Founded year

2001

Operating status

Operating

Headcount range

1–10 employees

Short description

Keggenhoff Partners is a German architecture and interior design firm founded in 2001, delivering integrated architecture and interior design services with a specialization in building conversion and adaptive reuse for corporate, retail, cultural, educational, and religious clients across Germany and selected international markets.

Ownership category

akta.pro rank

Product category

Architectural and Interior Design Services

NAICS

Interior Design Services (54141), Architectural Services (541310)

SIC

General Bldg Contractors - Residential Bldgs (1520)

akta.pro primary industry

Specialty Finishes & Decorative Installations (Plaster, Stone Veneer, Feature Walls) (IMAFANAM)

akta.pro secondary industry

Residential Design-Build & Renovation-Integrated Builders (IMAFABAE)

Keywords

• Architectural design services
• Interior design services
• Building conversion design
• Retail store design
• Adaptive reuse architecture

Headquarters

HQ city

Arnsberg

HQ country

Germany

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Architecture and Interior Design Services: Professional services revenue generated through architecture and interior design consulting, project execution, and competition-winning commissions for corporate, institutional, and private clients.

Go-to-market motion1 record

Distribution channels2 records

Marketing channels5 records

Core offering

Keggenhoff Partners is an architecture and interior design firm offering integrated architecture and interior architecture services from concept through execution. The firm serves corporate, institutional, retail, cultural, religious, educational, and private residential clients across Germany and selected international markets. Its distinctive specialization is conversion culture and sustainable renovation of existing buildings, delivered via competition wins and direct commissions.

Product overview

Keggenhoff Partners is an architecture and interior design firm founded in 2001 by Sabine Keggenhoff and Michael Than in Arnsberg, Germany. The firm offers a unified service combining architecture and interior architecture as a single holistic discipline, working nationwide on diverse project typologies. Their portfolio spans cultural buildings (Elbphilharmonie Hamburg, St. Victor Parish Hall), corporate offices (Telekom Campus Bonn, Magenta Mitte Berlin), educational facilities (SchulStadtbücherei, EBK Cologne), retail environments (Falke flagship stores, Zwilling), and sacred buildings. The firm specializes in building conversion and renovation, combining disciplines to convey spatial potential in a targeted, appropriate, and sustainable manner.

Differentiator

Problem solved

Functional benefit

Quantifiable outcome

• Multiple first-place competition wins including Deutscher Innenarchitekturpreis 1st Prize 2019, IDA Award Gold 2023, and numerous competition first places

Named customers13 records

Segments5 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Scale indicators2 records

Recent moves5 records

Expansion highlights4 records

Broad incumbents

• KSP Engel: German architecture firm with multi-sector practice covering corporate, educational, cultural, and public buildings. Overlaps with Keggenhoff in corporate and educational typologies but operates at materially larger scale as a generalist incumbent.
• HPP Architekten: Major German architecture firm with broader service portfolio spanning architecture, interior, and urban planning at much larger scale than Keggenhoff. Overlaps in corporate and cultural client segments but operates as a broad incumbent rather than boutique specialist.
• gmp Architekten: One of Germany's largest and most internationally recognized architecture firms, active in the same corporate, cultural, and public building segments. Serves as a broad incumbent reference point with significantly larger scale and global footprint.
• Sauerbruch Hutton: Berlin-based German architecture firm with strong sustainability and material-driven design philosophy similar to Keggenhoff's conversion-culture emphasis. Operates as a recognized broader incumbent with comparable design-recognition profile but larger scale.
• Henn Architekten: Munich-based German architecture firm with international portfolio spanning corporate headquarters, cultural, and educational buildings. Comparable client typologies to Keggenhoff but at broader incumbent scale with global delivery capability.

Direct peers

• Blocher Partners: Stuttgart-based architecture and interior design firm that similarly integrates both disciplines under one roof with a comparable focus on identity-forming corporate and retail spaces. Most directly comparable peer given shared interdisciplinary model and German mid-market positioning.
• Ippolito Fleitz Group: Stuttgart-based identity-driven architecture and interior design firm with comparable project typologies (retail, corporate, hospitality) and similar award-recognition profile. Both firms pursue holistic design narratives combining architecture and interior disciplines.
• Kinzo: Berlin-based architecture and interior design firm with comparable scale, integrated architecture-interior approach, and focus on brand-driven environments for corporate and retail clients in the German market.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/dipl.-ing.-sabine-keggenhoff

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 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 Keggenhoff Partners