Architektei GmbH

What Architektei GmbH does

Architektei GmbH is a privately held German full-service architecture firm (Gesellschaft mit beschränkter Haftung) headquartered in Köln, with additional offices in Krefeld and Puderbach. The firm traces its origins to Architektei Karsten, founded by Peter Karsten in 1991, and was reorganized as ARCHITEKTEI GmbH in 2009 with Tom Kleinmann joining the Geschäftsführung; Esra Özdemir joined the leadership team at the start of 2025, succeeding Peter Karsten. Architektei delivers architectural planning across all nine HOAI service phases — from preliminary design and feasibility analysis through construction supervision — for residential, commercial, and municipal clients, with a stated specialization in sustainable construction, energy-efficient renovation (Energetische Sanierung), urban quarter development (Städtebauliche Quartiersentwicklung), and fire-safety-related building refurbishment (Brandschutztechnische Gebäudesanierung). A team of approximately 20 architects, junior architects, drafters, and support staff executes integrated general planning that incorporates structural engineering, building services (HVAC), acoustics, building physics, surveying, and landscape architecture from the early project stages.

The business operates as a professional services practice compensated under HOAI fee regulations on a project-based, multi-year contract basis, with the GTM motion being sales-led via direct engagement, professional reputation, and referrals across German-speaking markets. Its primary client segment is housing companies (Wohnungsbaugesellschaften) and cooperatives (Genossenschaften), with secondary segments in industrial/commercial enterprises, public-sector clients (Städte Köln and Krefeld, GGH Heidelberg), and private Bauherren. Documented enterprise engagements include the Deutsche Post AG Verbund-Zustellstützpunkte program, a Wegener International GmbH exhibition and training facility, and residential developments totaling 218 units for GGH Heidelberg. Marketing is conducted through a corporate website (architektei.de), an active Facebook channel for project updates, and word-of-mouth referrals within the German architecture and construction network; a 2012 first-place "Nachhaltige Quartiere" award from the Baden-Württemberg state initiative "So wollen wir wohnen" underpins credibility for sustainable neighborhood work. The firm has no outside funding, operates exclusively across multiple German federal states, and discloses no APIs, software products, or AI/ML capabilities in its offering.

Name

Architektei GmbH

Legal name

ARCHITEKTEI GmbH

Website

https://architektei.de

Company type

Private

Founded year

2009

Operating status

Operating

Headcount range

1–10 employees

Short description

Architektei GmbH is a privately held German full-service architecture firm in Köln with offices in Krefeld and Puderbach, delivering HOAI-regulated planning, energy-efficient renovation, urban quarter development, and municipal/commercial projects for housing companies, cooperatives, enterprises, and public-sector clients.

Ownership category

akta.pro rank

Product category

Architectural Services

NAICS

Architectural Services (541310), Landscape Architectural Services (54132)

SIC

General Bldg Contractors - Residential Bldgs (1520), General Bldg Contractors - Nonresidential Bldgs (1540), Operative Builders (1531)

akta.pro primary industry

Architectural Design Services (BPAHAKAA)

akta.pro secondary industries

Architectural Reconfiguration & Structural Alterations (HSAPAEAB), Whole-Home Interior Renovation (Non-Structural) (HSAPAEAC), Residential Design-Build & Renovation-Integrated Builders (IMAFABAE), Landscape Architecture & Site Design (BPAHAKAC)

Keywords

• Architectural planning services
• Sustainable building design
• Urban quarter development
• Energy-efficient renovation
• General planning services

Headquarters

HQ city

Köln (Cologne)

HQ country

Germany

HQ region

Europe

Offices3 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Architektenleistungen nach HOAI: Professional architecture services according to German HOAI (Honorarordnung für Architekten und Ingenieure) covering all 9 service phases from preliminary design to project supervision. Revenue is project-based and calculated according to German fee regulations.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels3 records

Core offering

ARCHITEKTEI GmbH is a full-service German architecture firm delivering professional architectural planning and design services regulated under HOAI, covering all nine service phases (Leistungsphasen 1-9) from preliminary design and feasibility analysis through construction supervision and project completion. The firm serves housing companies, cooperatives, industrial and commercial clients, municipal authorities, and private clients with sustainable, energy-efficient solutions spanning new construction, conversions, extensions, renovations, and urban quarter development across Germany.

Product overview

Architektei GmbH is an architecture firm offering a unified portfolio of architectural services, not a software product company. Their core offerings include residential architecture (Wohnen), commercial architecture (Gewerbe), and municipal/public architecture (Kommunal) services. They provide full-service architectural planning from concept to completion, encompassing urban development, architectural design, project control, and property analysis. The company operates across three main service categories delivered as integrated professional services rather than discrete software products.

Differentiator

Problem solved

Functional benefit

Products and services

• Residential Architecture Services (Wohnen)

Quantifiable outcome

• First place award in 2012 for sustainable neighborhoods category
• +1 more outcomes

Named customers8 records

Segments4 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration3 records

Feature3 records

Scale indicators2 records

Recent moves6 records

Expansion highlights5 records

Broad incumbents

• HPP Architekten: Major German architecture practice with deep experience in residential, commercial, and public-sector projects including municipal buildings. Comparable to Architektei across its Wohnen/Gewerbe/Kommunal segmentation, but operating at a national scale.
• gmp Architekten: One of Germany's largest and most internationally active architecture practices, with a full-service portfolio spanning residential, commercial, cultural, and urban planning — directly comparable to Architektei's HOAI-based full-service model but at vastly greater scale and geographic reach.
• KSP Engel: Established German architecture firm with multiple offices covering residential, commercial, and public-sector projects. Comparable in full-service orientation and German HOAI-style delivery, but with substantially larger headcount and broader geographic footprint.
• Henn Architekten: Internationally active German architecture firm with comparable full-service and integrated engineering planning capabilities. Provides a relevant benchmark for what a scaled-up version of Architektei's general-planner offering could look like.

Direct peers

• Léon Wohlhage Wernik Architekten: German architecture practice with comparable full-service scope including residential, public-sector, and renovation projects. Similar in size and integrated-service positioning to Architektei.
• ASTOC ARCHITECTS AND PLANNERS: Mid-sized German architecture and urban planning firm with comparable focus on residential quarter development, public-sector buildings, and integrated planning services. Most directly analogous to Architektei in size, scope, and urban-planning emphasis.
• Hascher Jehle Architektur: German architecture and engineering practice offering full HOAI service phases and integrated general planning across residential, commercial, and public projects — comparable business model to Architektei with similar integrated-planning positioning.
• Ackermann Architekten: Mid-sized German architecture practice with comparable full-service offering across residential, commercial, and municipal work. Comparable in scale and German HOAI-based delivery model to Architektei.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat4 records

Key risks5 records

Key highlights5 records

Customer concentration

• Facebookfacebook.com/118689801124622
• LinkedInlinkedin.com/company/architektei

Revenue estimate

Valuation estimate

Number of profiles

Profiles10 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 Architektei GmbH