What Eller + Eller Architekten does

Eller + Eller Architekten GmbH is a privately held German architecture practice headquartered in Düsseldorf with a regional office in Berlin-Mitte. Founded in 1964 as 'Eller Moser Walter' and rebranded under its present name in 1997, the firm employs approximately 60 architects delivering full-scope architectural and general-planning services across all nine HOAI service phases (LPH 1-9) for new construction, conversion, renovation, and heritage-protected buildings. Its project portfolio spans corporate headquarters and campuses (WPP MIZAL Düsseldorf, BASF HQ Ludwigshafen, DATEV Nuremberg, Henkel Z20, Bayer Open Innovation Center Berlin), research and education facilities (Max Planck Institute for Security and Privacy, Bochum), government and parliamentary buildings (Landtag NRW since 1988, Bundesministerium der Justiz, Deutsche Botschaft Jakarta), and cultural institutions (Deutsches Historisches Museum, Schokoladenmuseum Köln, Ludwiggalerie Schloss Oberhausen).

The firm's technology foundation combines BIM-based digital planning chains, VR visualization on tablets and headsets, 3D-printed physical models, and a proprietary Customer Integration (Kundenintegration) platform that gives clients 360-degree real-time access to project data and supports interactive, AI-assisted data analysis. Services are organized into five core offerings — Architecture, New Working Environments, Cost and Schedule Management, Construction Management, and General Planning — plus the digital customer-integration module. The firm has secured industry recognition including MIPIM AR Future Project Awards (2014, 2016) and DGNB Gold sustainability certification.

Commercially, Eller + Eller operates as a relationship-driven, enterprise field-sales professional services firm. Pricing follows the German HOAI fee structure for architectural and engineering services, with specific quotations for complex or large-scale commissions and multi-year contract cadences tied to project phasing. The go-to-market mixes direct client engagement, competitive tenders, design competitions (where the firm has repeatedly won, e.g., Hertie School, Deutsche Botschaft Jakarta), and presence at MIPIM Cannes and the NAX architecture export network. Customers are predominantly large enterprises (BASF, Bayer, Henkel, WPP, Siemens Healthineers, DATEV), public-sector bodies (federal and state ministries, embassies), and cultural institutions across Germany and select international markets including Austria, India, and Indonesia.

Name

Eller + Eller Architekten

Legal name

Eller + Eller Architekten GmBH

Website

https://eller-eller.de/

Company type

Private

Founded year

1964

Operating status

Operating

Headcount range

51–100 employees

Short description

Eller+Eller Architekten is an architecture firm that offers construction planning, architecture, interior, and project management services.

Ownership category

akta.pro rank

Product category

Architectural Services

NAICS

Architectural Services (54131)

SIC

Services-Engineering Services (8711)

akta.pro primary industry

Architectural Design Services (BPAHAKAA)

akta.pro secondary industry

Building Information Modeling (BIM) & Digital Design Services (BPAHAKAK)

Keywords

• Architectural services
• General planning
• Construction management
• Heritage renovation
• BIM design

Headquarters

HQ city

Düsseldorf

HQ country

Germany

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Architectural Services: Professional architecture and engineering services billed according to HOAI (Honorarordnung für Architekten und Ingenieure) fee structure, covering all 9 Leistungsphasen (service phases) from preliminary design to construction supervision for new construction, conversion, renovation, and heritage-protected buildings.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels8 records

Core offering

Eller + Eller Architekten is a full-service German architecture firm that provides architectural design, new working environment design, cost and schedule management, construction management, and general planning services across all 9 Leistungsphasen of the HOAI fee structure. The firm serves corporate enterprises, government bodies, cultural institutions, and developers on new construction, renovation, revitalization, and heritage-protected projects. A distinctive customer integration offering extends standard BIM with VR visualization, 3D-printed models, AI-supported data analysis, and real-time project data access for clients throughout the construction process.

Product overview

Eller + Eller Architekten is an architectural services firm offering a comprehensive portfolio of planning and construction services. The core offering spans five main service areas: Architecture, New Working Environments (Neue Arbeitswelten), Cost and Schedule Management, Construction Management, and General Planning. These are delivered across all 9 phases of the German HOAI fee structure for new construction, renovation, and heritage-protected projects. A distinctive Customer Integration module provides clients with digital access to 360-degree planning views, AI-supported interactive data analysis, VR visualization, and real-time project information, extending their services beyond traditional architectural delivery into integrated digital client engagement.

Differentiator

Problem solved

Functional benefit

Products and services

• Architektur (Architecture)
• Neue Arbeitswelten (New Working Environments) Design of high-quality workplace environments that reflect company values, culture, and identity, with focus on employee identification, representation, and adaptable work patterns.
• Kosten- und Terminmanagement (Cost and Schedule Management) Structuring and managing complex construction processes to ensure projects remain within agreed time and cost frameworks without sacrificing quality.
• Baumanagement (Construction Management) Professional management and oversight guaranteeing smooth realization of construction projects from groundbreaking through completion.
• Generalplanung (General Planning) Overall responsibility for all architectural and engineering services of a project, serving as the single point of contact for clients across all disciplines.

Quantifiable outcome

• DGNB Gold certification achieved for FGS Campus Bonn
• +2 more outcomes

Named customers16 records

Segments6 records

Ideal customer profiles5 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration3 records

AI capability2 records

Feature3 records

Partnerships

One partnership is on record.

• NAX - Network for Architecture ExchangeminorOthers · 4 December 2025Firm participates in NAX programs including the North America Tour to NYC, engaging with peer architecture firms, the German American Chamber of Commerce, AIA New York, CTBUH New York Chapter, and visiting major practices like SOM. Provides international market exposure and knowledge exchange opportunities.

Scale indicators7 records

Recent moves7 records

Expansion highlights5 records

Direct peers

• HPP Architekten: Cologne/Düsseldorf-headquartered German architecture firm of similar scale (~250 architects) operating across corporate, healthcare, education, and government segments with comparable blue-chip client work. One of the closest structural peers to Eller+Eller in the German enterprise/government architecture market.
• gmp Architekten: Hamburg-based German architecture firm with global footprint, comparable typology (stadiums, airports, corporate HQs, cultural buildings), and similar general-planning service offering. Highly comparable on international reach and large-scale enterprise project delivery.
• KSP Engel: Frankfurt/Berlin/Munich-headquartered German architecture firm with similar corporate, government, and cultural building portfolio. Comparable in size, German market focus, and full-HOAI general-planning service model.
• JSK Architekten: Berlin/Düsseldorf-based German architecture firm with comparable corporate headquarters, airport, and government project experience. Similar regional footprint and client mix make JSK a closely matched structural peer.
• ingenhoven architects: Düsseldorf-based German architecture firm internationally renowned for sustainability-focused design and award-winning corporate headquarters. Direct peer on sustainability credentials, German enterprise client base, and MIPIM-recognized premium positioning.
• Hascher Jehle Architektur: Berlin-based German architecture firm of comparable scale serving cultural, corporate, and education sectors. Similar mix of heritage-sensitive and contemporary building work makes it a direct competitive peer.
• Behnisch Architekten: Stuttgart/Munich-based German architecture firm with strong sustainability and corporate campus credentials. Comparable on ESG-certified project delivery and enterprise/government client segments.

Emerging players

• BIG (Bjarke Ingels Group): Danish-headquartered international architecture firm with similar corporate HQ, cultural, and mixed-use typology exposure. Comparable on technology-forward design approach and rapid international expansion, though operating at a larger scale.

Broad incumbents

• Foster + Partners: Global architecture incumbent with extensive corporate headquarters, cultural institution, and government project portfolio. Competes with Eller+Eller for marquee enterprise and public-sector commissions but operates at vastly larger scale and global brand recognition.
• SOM (Skidmore, Owings & Merrill): Global architecture, engineering, and urban planning firm with significant corporate headquarters and government practice. Competes for large enterprise commissions but at much broader portfolio scale than Eller+Eller's specialist German enterprise/government niche.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/eearchitekten
• Facebookfacebook.com/ellerellerarchitekten
• LinkedInlinkedin.com/company/eller-eller-architekten
• Instagraminstagram.com/ellerellerarchitekten

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 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 Eller + Eller Architekten