Steffen Duemler Architekten

What Steffen Duemler Architekten does

Steffen Duemler Architekten is a Berlin-based architecture firm founded in 1989 by Steffen Duemler, a registered architect with the Bayerische Architektenkammer since 1989 and a Master of Science from California Polytechnique State University (1992). The firm operates from Pfalzburger Strasse 72 A in Berlin-Charlottenburg and delivers professional architectural design services for commercial, hospitality, residential, and institutional projects, with a 25+ project portfolio that includes landmark German developments such as SONY Center Berlin, SIGN Düsseldorf, Weser Tower Bremen, Seminaris Campus Hotel Berlin-Dahlem, Kongresshotel Ingolstadt, Galeria Kaufhof Chemnitz, and the VOITH Head Office. Bärbel Herrmann is a Project Architect with prior tenure at Murphy/Jahn Architects, and the firm maintains a 20-year close cooperation with Murphy/Jahn Architects (Chicago), evidence of a long-running transatlantic design partnership that anchors its high-end commercial work.

The practice is small — six architects in total as of the most recent team listing — and runs on project-based commissions, with fees determined by scope, complexity, and project size. Pricing is not publicly disclosed. The technology stack centres on Building Information Modeling (BIM) via AutoDesk Revit, supplemented by domain partnerships with Transsolar Climate Engineering (Munich) for sustainability and climate engineering, Rehle Ingenieure (Stuttgart) for structural engineering, and Nowak Landschaftsarchitekten (Munich) for landscape architecture. GTM is sales-led and direct: the firm pursues enterprise clients through relationship-driven outreach and a portfolio showcased on sdarchitekten.de, with no platform, app, or SaaS product layer. Revenue is generated purely through professional services fees, with no ancillary product, licensing, or transaction revenue streams identified.

Customer segments are horizontal across large enterprise categories: commercial real estate developers (VOITH, Google Berlin, Weser Tower Bremen), hospitality operators (Seminaris, Kongresshotel), retail (Galeria Kaufhof), and institutional/public-sector clients. The firm is founder-owned and operates independently with no external investors, parent company, or institutional funding. Geographic operations focus on Germany, with current and historical projects in Berlin, Bavaria, Baden-Württemberg, North Rhine-Westphalia, Bremen, and Lower Saxony. Distribution is direct and regional, mediated through professional reputation and portfolio rather than paid marketing channels.

Name

Steffen Duemler Architekten

Legal name

Steffen Duemler Architekten

Website

https://sdarchitekten.de

Company type

Private

Founded year

1989

Operating status

Operating

Headcount range

1–10 employees

Short description

Steffen Duemler Architekten is a Berlin-based architecture firm delivering professional design services for commercial, hospitality, residential, and institutional projects across Germany, with a portfolio of landmark developments including SONY Center Berlin and SIGN Düsseldorf.

Ownership category

akta.pro rank

Product category

Architectural Services

NAICS

Architectural Services (54131), Interior Design Services (54141)

SIC

Services-Engineering, Accounting, Research, Management (8700)

akta.pro primary industry

Architectural Design Services (BPAHAKAA)

akta.pro secondary industry

Interior Design Services (BPAHAKAB)

Keywords

• Architectural design services
• Commercial building design
• Hotel architecture
• Sustainable building design
• Facade engineering

Headquarters

HQ city

Berlin

HQ country

Germany

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Supply Chain, Technology or R&D, Marketing or Sales

Revenue model

1. Architectural Design Services: Professional architectural services for commercial, residential, hotel, and institutional buildings. Revenue generated through project-based fees for design, planning, and project supervision services.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels3 records

Core offering

Steffen Duemler Architekten is a Berlin-based architecture practice providing professional architectural design services for commercial, hospitality, residential and institutional buildings across Germany. Services span concept design, detailed design, construction documentation, facade engineering, interior design and project supervision, delivered through BIM (AutoDesk Revit) and in collaboration with specialist engineering and landscape consultants.

Product overview

Steffen Duemler Architekten is an architecture firm providing architectural design services rather than a software product company. The firm offers design and execution of various building types including residential, office, hotel, educational, leisure, urban development, interior design, facade design, and traffic/transportation facilities. Their service portfolio encompasses project types such as campus hotels (Seminaris Campus Hotel, Kongresshotel Ingolstadt), office towers (Weser Tower Bremen, Skyline Tower Munich, Hegau Tower Singen), commercial buildings (Galeria Kaufhof Chemnitz, VOITH Head Office), facade engineering services, and urban development projects. The firm maintains partnerships with Transsolar Climate Engineering, Rehle Ingenieure, and Nowak Landschaftsarchitekten for specialized consulting on climate engineering, engineering, and landscape architecture respectively.

Differentiator

Problem solved

Functional benefit

Products and services

• Architectural Design Services for Commercial and Office Buildings Professional architectural services covering concept design, detailed design, construction documentation and project supervision for office towers, corporate headquarters and commercial complexes across Germany.
• Architectural Design Services for Hotels and Conference Facilities Design services for hotels, campus hotels and conference facilities, including concept to project supervision, with emphasis on premium guest experience, energy efficiency and distinctive architectural identity.
• Architectural Design Services for Residential and Mixed-Use Developments Architectural services for residential buildings and mixed-use developments, including the H-55 residential and commercial building in Rottweil, focusing on sustainable construction, urban integration and cost efficiency.
• Facade Design and Engineering Services Specialized facade design and engineering services delivered as part of the firm's architectural portfolio, leveraging Transsolar Climate Engineering and engineering partner expertise for high-tech, energy-efficient envelopes.
• Interior Design Services Interior design services offered as part of the firm's broader architectural practice for commercial, residential and hospitality projects.
• Urban Development Planning Services Planning and design services for urban development and master planning projects, including integration with landscape architecture partner Nowak Landschaftsarchitekten.
• Institutional and Educational Building Design Services Architecture services for educational and institutional buildings, including campus and university-related facilities such as the Seminaris Campus Hotel at Free University Berlin.

Quantifiable outcome

• Buildings designed with lowest possible energy consumption through decentralized HVAC systems
• +1 more outcomes

Named customers7 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

Feature2 records

Partnerships

Three partnerships are on record, tiered core.

• Transsolar Climate EngineeringcoreStrategic or Co-development PartnerLong-standing partnership with Transsolar Climate Engineering based in Munich for sustainable climate design in building projects. Transsolar is a leading firm specializing in climate engineering for buildings.
• Nowak LandschaftsarchitektencoreStrategic or Co-development PartnerPartnership with Nowak Landschaftsarchitekten based in Munich for landscape architecture services integrated into building projects.
• Rehle IngenieurecoreStrategic or Co-development PartnerPartnership with Rehle Ingenieure based in Stuttgart for engineering services, bringing additional technical expertise to building projects.

Scale indicators2 records

Recent moves5 records

Expansion highlights4 records

Direct peers

• HPP Architekten: Düsseldorf-headquartered German architecture firm of comparable mid-scale with portfolios across office towers, hotels, and commercial developments — directly comparable in geography, project typologies, and enterprise client mix.
• Sauerbruch Hutton: Berlin-based architecture firm of comparable boutique-mid scale with a strong portfolio in commercial, cultural, and sustainable design — directly comparable in city, segment mix, and design-led positioning. Team member Philipp Brand previously worked at Sauerbruch Hutton.
• Barkow Leibinger: Berlin-based architecture firm of comparable boutique scale with international project portfolio in commercial, cultural, and industrial buildings. Comparable in size, city, and design-led positioning.
• Kuehn Malvezzi: Berlin-based architecture firm comparable in boutique scale, with portfolios across cultural, commercial, and urban development projects. Comparable in city, size, and project typologies.
• Staab Architekten: Berlin-based architecture firm of comparable boutique scale working in commercial, cultural, and institutional projects. Comparable in geographic market, size, and design-led positioning.
• David Chipperfield Architects: Berlin office of the international David Chipperfield practice, comparable in high-design positioning and Berlin location, with strong portfolios in cultural, commercial, and hotel sectors — directly comparable client segments.
• Max Dudler Architekten: Berlin-based architecture firm comparable in boutique-mid scale and design-led positioning, with project portfolios spanning commercial, cultural, and urban development. Comparable in geographic market and project mix.
• HENN Architekten: Munich-based architecture firm comparable in mid-scale and segment focus, with strong portfolios in office towers, hotels, and corporate headquarters. Directly competes for the same enterprise commercial commissions in Germany.
• Murphy/Jahn Architects: Chicago-based architecture practice that has been the firm's 20-year collaborating partner. Shares a similar high-design aesthetic and works in commercial towers and landmark projects; many projects attributed to the firm reference Murphy/Jahn involvement.

Broad incumbents

• gmp Architekten: Hamburg-headquartered German architecture practice, significantly larger than the subject firm, working across stadiums, office towers, hotels, and public buildings. Broader incumbent operating in the same German commercial and institutional segments.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat3 records

Key risks5 records

Key highlights5 records

Customer concentration

• LinkedInlinkedin.com/company/steffen-duemler-architekten

Revenue estimate

Valuation estimate

Number of profiles

Profiles6 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 Steffen Duemler Architekten