Agn Niederberghaus & Partner

What Agn Niederberghaus & Partner does

AGN Niederberghaus & Partner GmbH is a privately held German architecture and general planning firm founded in 1950 and headquartered in Ibbenbüren, North Rhine-Westphalia. The group employs over 850 architects, engineers, building physicists, sustainability consultants, and BIM specialists across 15+ German office locations, organized around the core offering of Generalplanung — full-responsibility planning across all Leistungsphasen 1–9 per Germany's HOAI fee ordinance, delivered from a single source. Subsidiaries include siganet (security technology, building automation, networks), energum (building physics, energy concepts, sustainability), convis (structural engineering), agn Leusmann GmbH (Hamburg), Hammerschmidt Architects (Frankfurt), and the newly established agn Magdeburg GmbH (October 2025).

The firm's revenue model is professional services, with fees governed by HOAI for public clients and negotiated individually for private engagements. Projects are acquired through public procurement tenders (VgV-Verfahren for general planning, ÖPP-Verfahren for public-private partnerships), architectural competitions, and direct commissions from repeat clients. Customer segments are dominated by public administration — state construction and real estate agencies (BLB NRW, Land Berlin, NLBK Niedersachsen), ministries, universities (Humboldt-Universität, Universität Potsdam, Universität Paderborn), and municipalities — supplemented by real estate developers (Landmarken AG, Tishman Speyer) and corporate clients (DZ HYP, BAM Sports). Marketing relies primarily on the agn.de project showcase website, the 'agn Einblicke' magazine, the career portal, and press coverage of completions rather than broad digital advertising.

Technically, agn applies Building Information Modeling across all planning phases, including BIM 5D cost integration via RIB iTWO and California AVA, with Revit for 3D modeling and the upmesh platform for digital construction site documentation, defect tracking, and plan management. The firm differentiates itself through single-source general planning responsibility, sustainability expertise (BNB, DGNB, KfW 40 standards), Urban Mining concepts demonstrated in the Rathaus Korbach project, and the ability to coordinate the specialist planning for complex landmark projects such as the Berlin Tegel TXL conversion, the Wildparkstadion Karlsruhe, and the NRW Financial Administration PPP campus in Kaarst.

Name

Agn Niederberghaus & Partner

Legal name

agn Niederberghaus & Partner GmbH

Website

https://www.agn.de/

Company type

Private

Founded year

1952

Operating status

Operating

Headcount range

501–1,000 employees

Short description

AGN Niederberghaus & Partner GmbH is a privately held German general planning firm founded in 1950, employing over 850 architects, engineers, and specialists across 15+ German cities to deliver single-source architecture, engineering, and technical building planning for public sector, education, and real estate developer clients.

Ownership category

akta.pro rank

Product category

Architecture and General Planning Services

NAICS

Corporate, Subsidiary, and Regional Managing Offices (551114)

akta.pro primary industry

Design-Build / EPC General Contracting (IMAFAAAD)

Keywords

• Architecture and general planning
• Structural engineering services
• Technical building equipment
• Building information modeling
• Sustainable construction consulting

Headquarters

HQ city

Nordheim

HQ country

Germany

HQ region

Europe

Offices18 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Architecture and General Planning Services: agn generates revenue through fees for architecture, engineering, and general planning services across all phases of construction projects (Leistungsphasen 1-9 per HOAI). As general planners, they assume full responsibility for projects and provide all specialist planning from a single source, which is the core revenue driver.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels5 records

Core offering

AGN provides comprehensive architecture and general planning services for building projects across all nine Leistungsphasen of the German HOAI fee framework. As a true Generalplaner, it delivers all specialist planning disciplines — architecture, structural engineering, technical building equipment (HVAC, electrical, building automation), building physics, sustainability/energy consulting, and project management — from a single contractual source with unified responsibility. The portfolio spans educational, governmental, healthcare, sports, office, and residential projects for public-sector clients, real estate developers, and corporate owners across Germany.

Product overview

Agn Niederberghaus & Partner operates as a large architecture and general planning firm with over 850 employees, offering unified general planning services through a multi-office, multi-subsidiary structure. The core offering is general planning (Generalplanung) combining architecture, engineering, building physics, and technical building equipment from a single source. The company operates through regional offices across Germany (Ibbenbüren as headquarters, Berlin, Hamburg, Hannover, Münster, Düsseldorf, Wiesbaden, Bremen, Braunschweig, Halle/Saale, Stuttgart, Munich, Magdeburg) plus affiliated subsidiaries: energum (building physics and sustainability), siganet (security technology and building automation), convis (engineering services), and Hammerschmidt Architects (architecture/transformation). The portfolio spans educational buildings, healthcare facilities, government buildings, sports stadiums, office buildings, and residential projects, with emphasis on sustainable construction and BIM methodology.

Differentiator

Problem solved

Functional benefit

Brands

• siganet: Security technology, building automation, and networks subsidiary
• energum
• agn Akademie

Products and services

• agn Generalplanung (General Planning Services) Full-service architectural and engineering general planning providing complete single-source responsibility for construction projects across all nine Leistungsphasen of the German HOAI fee framework, covering architecture, structural engineering, technical building equipment, building physics, and sustainability for public-sector, developer, education, and corporate clients.
• Technical Building Equipment (Technische Gebäudeausrüstung, TGA) Planning Complete technical building systems planning covering electrical engineering, HVAC (heating, ventilation, air conditioning), and building automation, developed as a division since the 1960s and offered as a standalone service or as part of general planning.
• Building Physics (Bauphysik) Consulting Building physics expertise including acoustics, thermal protection, and sound insulation integrated into construction project planning, supporting sustainability and energy efficiency certifications.
• Building Information Modeling (BIM) Services Advanced BIM methodology services enabling 5D planning with digital models for comprehensive project visualization and coordination, including Revit-based 3D modeling and RIB iTWO-based cost integration.
• upmesh Digital Construction Management Platform Digital construction management platform agn uses for object monitoring (Objektüberwachung), enabling ticket-based defect documentation with plan localization, photos, and descriptions, as well as plan management, task management, time tracking, and BIM viewer integration on construction sites.
• Urban Mining and Circular Construction Consulting Sustainable construction consulting service focused on Urban Mining concepts for selective deconstruction and near-site recycling of mineral demolition materials, enabling buildings to serve as material depots for future generations; demonstrated in the Rathaus Korbach project (Deutscher Nachhaltigkeitspreis finalist).

Quantifiable outcome

• BNB Silver certification achieved for multiple university and government projects (Optobiologie Berlin, ZeLB Potsdam, CAU Kiel).
• +2 more outcomes

Named customers12 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

Feature4 records

Partnerships

Eight partnerships are on record, tiered core and minor.

• Landmarken AGcoreStrategic or Co-development Partneragn serves as the planning partner (Planungspartner) to Landmarken AG in the ÖPP (public-private partnership) project for the NRW Financial Administration (RZF) in Kaarst. Landmarken AG leads the development and agn provides all planning services for the ~1,000 workspace campus.
• ZECH Bau SEcoreStrategic or Co-development PartnerZECH Bau SE is the construction partner (Baupartner) in the ÖPP consortium for the NRW Financial Administration (RZF) Kaarst project. agn works alongside ZECH Bau as the planning partner in this public-private partnership.
• noAarchitectencoreStrategic or Co-development Partneragn Leusmann and noAarchitecten from Brussels are jointly responsible for the architecture of the Klöpperhaus Hamburg revitalization project ('AJOUR'), in collaboration with Tishman Speyer as the client and JES Socialtecture for social planning aspects.
• heimspielarchitektenminorStrategic or Co-development Partneragn formed a working group (ARGE) with heimspielarchitekten for the Rathaus Korbach project, which won the German Sustainability Award finalist recognition and produced a pioneering Urban Mining concept.
• siganetcoreTechnology or Integrationsiganet is a subsidiary of the agn group specializing in security technology, building automation, and networks. It operates alongside agn's technical building planning to provide integrated building technology solutions, including at the Berlin office location.
• energumcoreTechnology or Integrationenergum is a subsidiary of the agn group specializing in building physics, energy concepts, and sustainability consulting. It supports agn's planning teams with expert input for BNB and DGNB certification projects.
• conviscoreTechnology or Integrationconvis is a subsidiary of the agn group providing structural engineering and construction planning services. With offices in Bautzen, Bochum, Chemnitz, and Würzburg, convis extends agn's reach in eastern Germany.
• BAM Sports GmbHcoreStrategic or Co-development PartnerBAM Sports is the client and stadium developer for the Wildparkstadion Karlsruhe project. agn won the design commission through a general contractor selection process (Generalübernehmer-Verfahren) led by BAM Sports.

Scale indicators2 records

Recent moves7 records

Expansion highlights5 records

Direct peers

• Drees & Sommer: German engineering and consulting firm providing integrated planning, real estate consulting, and project management across the full building lifecycle — directly comparable to AGN's general-planner model and public-sector client base.
• HPP Architekten: Major German architecture firm with a similar general-planning orientation, working on cultural, public, sports and commercial projects across Germany — comparable in scale, client mix, and integrated delivery approach.
• gmp Architekten: One of Germany's largest architecture practices (von Gerkan, Marg and Partners), working on stadiums, public buildings, and urban developments — closely comparable to AGN's project portfolio and public-institutional focus.
• Werner Sobek: German engineering and architecture firm specializing in structural design, building physics, and sustainable construction — directly comparable to AGN's energum/siganet integrated technical capabilities and sustainability positioning.
• KSP Engel: German architecture firm delivering integrated planning for office, public, and cultural buildings — comparable in scale, full-service positioning, and German institutional client base.
• Hascher Jehle Architektur: German architecture and engineering practice focused on sustainable and innovative building projects, including public-sector work — comparable to AGN's integrated general-planner model and sustainability credentials.
• Bollinger + Grohmann: German engineering firm specializing in structural engineering, building physics, and sustainable design — comparable to AGN's convis/energum technical subsidiaries and BIM-integrated delivery.
• RKW Architektur +: German architecture firm with strong public-sector and housing expertise across Germany — comparable in scale, regional office model, and project type mix to AGN.
• Behnisch Architekten: German architecture firm recognized for sustainable design across education, public, and commercial buildings — comparable to AGN's sustainability positioning and public/institutional project portfolio.
• JSK Architekten: German architecture and general-planning firm working on public, commercial, and residential projects — comparable in integrated delivery approach and German institutional client base.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

Revenue estimate

Valuation estimate

Number of profiles

Profiles9 records

Subsidiaries7 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 Agn Niederberghaus & Partner