Dietrich Untertrifaller Architekten

What Dietrich Untertrifaller Architekten does

Dietrich Untertrifaller Architekten (DTFLR) is a privately held international architectural practice founded in 1994 in Bregenz, Vorarlberg, Austria, by Helmut Dietrich and Much Untertrifaller. The firm operates from eight offices in five countries — Austria (Bregenz, Vienna), Switzerland (St. Gallen), Germany (Munich, Frankfurt), France (Paris), and Serbia (Belgrade) — through six legally separate entities, and serves public-sector and enterprise clients across urban development, culture, education, sport, housing, and refurbishment typologies. Named clients include the City of Vienna, City of Frankfurt, Stadtwerke München, Deutsche Wohnwerte, and the Rudolf Steiner Schulverein, with project scale ranging from neighbourhood-scale quarters (e.g., the ~11,000 m² Hospital Quarter Heidelberg competition 1st prize) to corporate housing developments (e.g., KREA Living Munich with ~350 company flats).

The firm's core technical proposition rests on three pillars: a pioneering specialisation in modern timber construction (prefabricated elements, ribbed and hollow box elements, hybrid timber-and-solid systems); an integrated digital planning stack anchored by Building Information Modeling (BIM) adopted from 2020; and the BIG ROOM integral planning methodology that embeds clients, consultants and contractors in a shared workspace governed by agile/Scrum project management. These methodologies support a service portfolio spanning architectural design, timber-construction design, urban planning, sustainable and regenerative architecture, and adaptive reuse of existing buildings. The practice holds ClimatePartner certification since end-2024 and has received high-credibility industry awards including wienwood 21 and 25, a Mies van der Rohe Award 2025 nomination, and a Piranesi Award 2025 nomination.

The business model is a traditional professional-services architecture practice: revenue is generated from project-specific fee agreements (competitions, direct commissions, VgV procedures, public tenders) with no public pricing or disclosed revenue. The firm is wholly partner-owned — no external institutional investors — and is currently run by three sole partners (Dominik Philipp, Patrick Stremler, Much Untertrifaller) following co-founder Helmut Dietrich's November 2023 exit. Distribution is direct and local through the eight offices, supported by a multilingual website (German, English, French) and earned-media channels (Instagram, LinkedIn, Pinterest, press relations). Customer acquisition relies primarily on competition participation and direct engagement with municipal, educational, and real-estate developer clients across Central Europe.

Name

Dietrich Untertrifaller Architekten

Legal name

Dietrich Untertrifaller Architekten ZT GmbH

Website

https://dtflr.com

Company type

Private

Founded year

1994

Operating status

Operating

Headcount range

101–250 employees

Short description

Dietrich Untertrifaller Architekten is a privately held international architectural practice founded in 1994 in Bregenz, Austria, operating from eight offices across Austria, Switzerland, Germany, France, and Serbia with 170+ staff, serving public-sector and enterprise clients in timber construction, education, urban development, housing, and adaptive reuse.

Ownership category

akta.pro rank

Product category

Architectural Services

NAICS

Architectural Services (541310)

SIC

Services-Engineering Services (8711)

akta.pro primary industry

Architectural Design Services (BPAHAKAA)

akta.pro secondary industries

Community Engagement & Participatory Planning (BPAHAKAO), Architectural Reconfiguration & Structural Alterations (HSAPAEAB)

Keywords

• Architectural design services
• Sustainable architecture
• Timber construction design
• Urban planning
• Building renovation

Headquarters

HQ city

Bregenz

HQ country

Austria

HQ region

Europe

Offices7 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Architectural Services: Full-service architectural design services for public and private clients including competition entries, new construction, refurbishment, and urban development projects.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels6 records

Core offering

Dietrich Untertrifaller Architekten is an international architectural practice providing full-service design for residential, commercial, educational, cultural, sport, and urban development projects across Europe. The firm has pioneering expertise in modern timber construction and sustainable, context-sensitive design, supported by an interdisciplinary BIG ROOM integral planning methodology that brings clients, consultants, and contractors into a shared collaborative workspace throughout the project lifecycle.

Product overview

Dietrich Untertrifaller Architekten (DTFLR) is an international architectural practice with roots in Vorarlberg, Austria, operating from offices in Austria (Bregenz, Vienna), Switzerland (St. Gallen), Germany (Munich, Frankfurt), France (Paris), and Serbia (Belgrade). The firm employs over 170 staff and provides comprehensive architectural design services across residential, commercial, educational, cultural, and urban development sectors. The company has established pioneering expertise in modern timber construction and sustainable building practices. Their integrated approach includes agile project management methodologies (BIG Room), where all project stakeholders collaborate throughout the planning process. The firm specializes in sustainable and regenerative architecture using renewable materials such as timber and clay, with a focus on circular economy principles and minimizing environmental impact through building lifecycle management.

Differentiator

Problem solved

Functional benefit

Products and services

• Architectural Design Services Comprehensive architectural design services including competition entries, new construction, refurbishment, and urban development for public and private clients across Austria, Switzerland, Germany, France, and Serbia.
• Timber Construction Design Specialized expertise in modern timber construction, including prefabricated elements, ribbed and hollow box elements, and hybrid construction combining timber with solid elements.
• Urban Planning and City Development

Named customers5 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

Feature4 records

Partnerships

Four partnerships are on record, tiered minor.

• Schluder ArchitekturminorStrategic or Co-development PartnerCo-architecture partnership for Elementary school Christian-Bucher-Gasse, Vienna project.
• Bauchplan (landscape)minorStrategic or Co-development PartnerLandscape architecture partner for KREA Living Munich project.
• PorrminorImplementation/ SI/ Consulting PartnerGeneral contractor partner for Elementary school Christian-Bucher-Gasse project in Vienna.
• HandlerminorImplementation/ SI/ Consulting PartnerGeneral contractor for Waldorf School Vienna-Mauer project in Bad Schönau.

Scale indicators3 records

Recent moves7 records

Expansion highlights5 records

Direct peers

• MVRDV: Dutch architecture firm of comparable scale (300+ staff) with international offices, similar mix of cultural, residential and urban development commissions, and analogous award-driven positioning.
• HPP Architekten: German architecture practice of comparable scale, with strong DACH regional focus and similar service mix across education, cultural and public-sector building types — directly comparable on client profile and project types.
• Sauerbruch Hutton: Berlin-based architecture firm of comparable scale, with a strong sustainability and color/material-led design ethos that overlaps with DTFLR's emphasis on contextual, sustainable architecture in the DACH market.
• Allmann Sattler Wappner Architekten: Munich-based architecture firm with comparable DACH regional positioning, similar project-type breadth and overlapping public-sector client base — among the closest regional direct competitors.
• David Chipperfield Architects: UK-anchored practice with strong Berlin and broader European presence, comparable size and prestige profile; comparable in cultural and public-sector project mix and design-led positioning.
• Snøhetta: Norway-based international architecture practice with comparable scale (300+ staff) and a strong sustainability and contextual-design ethos; directly comparable in multi-disciplinary international project delivery and premium positioning.
• BIG (Bjarke Ingels Group): Danish-headquartered international architecture practice with similar multi-office European footprint, comparable scale of operation, and analogous mix of cultural, educational and residential commissions.
• Henning Larsen: Danish-headquartered international architecture firm of comparable scale with strong sustainability credentials; competes in similar cultural, civic and educational project categories across Europe.

Broad incumbents

• Foster + Partners: Global architecture firm operating at substantially larger scale across multiple sectors; overlaps with DTFLR on cultural, civic and urban projects but competes from a much broader portfolio and global delivery base.
• Zaha Hadid Architects: Global architecture firm with prestige and award profile directly comparable to DTFLR's Mies van der Rohe nominations; competes in the same cultural and large-scale public project category but from significantly larger scale.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks1 record

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/dietrich-untertrifaller
• Instagraminstagram.com/dietrich_untertrifaller
• Pinterestat.pinterest.com/dietrich_untertrifaller
• Facebookfacebook.com/dietrich.untertrifaller

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles4 records

Subsidiaries5 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 Dietrich Untertrifaller Architekten