ioo Architekten

What ioo Architekten does

ioo Architekten (legal name: ioo Planungsgesellschaft mbH) is a Berlin-based architecture firm founded in 1998 by Barbara Elwardt and Klaus Lattermann as Büro Elwardt Lattermann Architekten and rebranded to ioo in 2014. The firm operates as a private GmbH and provides full-service architectural planning across all HOAI performance phases (LPH 1–9), from preliminary design through construction supervision and handover. Its practice spans residential new construction (with particular emphasis on large-scale affordable housing), office buildings, hotels, care homes, and existing building development including heritage-conscientious renovation. The firm operates from a single headquarters at Obentrautstraße 72 in Berlin and serves clients primarily in Berlin, Brandenburg, and selected European projects including Austria.

The firm serves two principal customer segments: public municipal housing corporations (Gewobag, STADT UND LAND Wohnbauten-Gesellschaft, HOWOGE, degewo) and private developers/investors (Kondor Wessels, Laborgh Investment, H'Group Berlin, Berlinovo). Notable clients also include hotel operator R&B Room & Board. The firm's technology stack rests on Building Information Modeling up to 5D using ArchiCAD, complemented by serial and modular construction methods executed under GdW (Bundesverband deutscher Wohnungs- und Immobilienunternehmen) framework agreements, as deployed in the Wasserstadt Oberhavel TP3c project (288 units). It pursues KfW 55/70 energy efficiency standards and DGNB certification targets on selected projects.

Revenue is generated through professional services fees calculated under German HOAI regulations, which govern architect compensation by performance phase and project construction cost. Projects are secured via design competitions, competitive public tendering, direct commission from repeat municipal clients, and preferred positioning through GdW framework agreements. Active projects include Konnekt (~1,400 units), Stern-Center (929 units), Buschkrugallee (860 units), Tal-Center (624 units), Märkisches Quartier (690 units), and Das Neue Gartenfeld (~1,100 units), with the firm describing its portfolio as 50+ projects completed or underway across residential, office, hotel, and care home typologies. Geographic concentration is in Berlin and Brandenburg; secondary footprint extends to Austria, evidenced by the award-winning Cōmodo hotel renovation in Bad Gastein.

Name

ioo Architekten

Legal name

ioo Planungsgesellschaft mbH

Website

https://ioobln.de

Company type

Private

Founded year

1998

Operating status

Operating

Headcount range

11–50 employees

Short description

ioo Architekten is a Berlin-based architecture firm founded in 1998 providing full-service HOAI-compliant planning (LPH 1–9) across residential, office, hotel, and care home typologies, primarily serving Berlin municipal housing corporations and private developers on large-scale affordable housing projects.

Ownership category

akta.pro rank

Product category

Architecture Services

NAICS

Architectural Services (54131), Architectural Services (541310)

SIC

Non-Operating Establishments (9995)

akta.pro primary industry

Urban Planning & Master Planning (BPAHAKAD)

Keywords

• Architectural design services
• Residential building planning
• Affordable housing design
• Heritage building renovation
• Urban development planning

Headquarters

HQ city

Berlin

HQ country

Germany

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Architectural Planning and Design Services: Professional architecture services covering all Leistungsphasen (LPH 1-9) under German HOAI regulations. Project-based fees for new construction, renovation, and urban development projects ranging from single buildings to large-scale mixed-use schemes.

Go-to-market motion1 record

Distribution channels3 records

Marketing channels7 records

Core offering

ioo Architekten is a Berlin-based architecture firm that delivers full-service architectural planning and design across all German HOAI Leistungsphasen (LPH 1-9). Its portfolio spans new residential construction (including large-scale affordable housing), office buildings, hotels, care homes, and the renovation/adaptive reuse of existing and historic buildings. The firm differentiates through BIM 5D planning methodology and serial/modular construction under GdW framework agreements, enabling large-scale, cost-efficient subsidized housing delivery primarily for Berlin's municipal housing companies and select private developers.

Product overview

ioo Architekten is a full-service architectural firm offering comprehensive planning services across multiple building typologies. Their core portfolio includes residential new construction (Neubau Wohnen), office buildings (Büro), hotels (Hotel), care homes (Pflegeheim), and existing building development (Bestandsentwicklung). The firm provides services across all HOAI performance phases (LPH 1-9), from initial concept through completion and handover. A notable specialization is serial and modular construction methods (Serielles und modulares Bauen) under GdW framework agreements, enabling efficient, high-quality prefabricated building solutions. The firm operates from Berlin and serves clients throughout Europe.

Differentiator

Problem solved

Functional benefit

Products and services

• Neubau Wohnen (Residential New Construction)

Quantifiable outcome

• 50+ residential and commercial projects completed or underway
• +3 more outcomes

Named customers10 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

Feature3 records

Partnerships

18 partnerships are on record, tiered core, major, strategic and minor.

• STADT UND LAND Wohnbauten-Gesellschaft mbHcoreStrategic or Co-development PartnerMajor Berlin municipal housing company. Multiple ongoing projects including Albert-Kuntz-Str. (284 units), Walküren Str. (234 units), Bruno-Bürgel-Weg (160 units), and Potsdamer Str. Ludwigsfelde (119 units). End buyer for subsidized housing developments.
• GewobagcoreStrategic or Co-development PartnerMajor Berlin housing company. Key projects include Konnekt (~1,400 units), Das Neue Gartenfeld (~521 units), Wasserstadt Oberhavel TP3c (288 units), and Stern-Center Potsdam (929 units).
• HOWOGE Wohnungsbaugesellschaft mbHcoreStrategic or Co-development PartnerBerlin housing company. Projects include Konnekt (~1,400 units), Falkenberger Chaussee (139 units), Konrad-Wolf-Str. (157 units), and Eitelstr. (106 units).
• degewocoreStrategic or Co-development PartnerLeading Berlin municipal housing company with 76,000 units. Projects: Fürstenwalder Allee (386 units) and Pöhlbergstr. (95 units). Target of 10% portfolio growth by 2026.
• Kondor WesselscoreStrategic or Co-development PartnerPrivate developer. Multiple joint projects including Konnekt, Tal-Center, Stern-Center Potsdam, and Grüne Freiheit (Fliegerhorst Staaken, 278 units).
• Laborgh Investment GmbHcoreStrategic or Co-development PartnerDeveloper. Joint venture with Kondor Wessels on Konnekt project (~1,400 affordable apartments for HOWOGE).
• Schrobsdorff Bau AGcoreImplementation/ SI/ Consulting PartnerConstruction company partner for multiple projects including TP3c Wasserstadt Oberhavel (288 units) and Luckenwalder Str. (115 units).
• Berlinovo Wohnimmobilien GmbHmajorStrategic or Co-development PartnerGovernment-related real estate investor. Project: Luckenwalder Str. (115 senior-friendly units) with Schrobsdorff Bau AG.
• H'Group Berlin GreenparkmajorStrategic or Co-development PartnerDeveloper. Greenpark project at Buschkrugallee (860 units) on former Blub Badeparadies site. Sustainable design with innovative energy concepts.
• BuntecoreImplementation/ SI/ Consulting PartnerConstruction partner for Fürstenwalder Allee project (386 units) with degewo.
• David Chipperfield ArchitectsstrategicStrategic or Co-development PartnerRenowned architecture firm. Urban design for Konnekt project integrating heritage buildings with new construction.
• Kleihues + KleihuesstrategicStrategic or Co-development PartnerArchitecture firm. Urban design competition winners for Märkisches Quartier project (690 units).
• Hadi TeheranistrategicStrategic or Co-development PartnerRenowned architect. Residential tower design for Gutenbergstrasse project near Spree.
• GoldbeckminorImplementation/ SI/ Consulting PartnerConstruction partner. Site visit with TU Berlin at Greenpark project.
• TU BerlinminorOthersAcademic institution. Joint site visit at Greenpark project with students from Switzerland.
• ECEmajorStrategic or Co-development PartnerProject developer. Stern-Center Potsdam project with Kondor Wessels (929 units, 4 residential towers).
• WBM Wohnungsbaugesellschaft Berlin-Mitte mbHcoreStrategic or Co-development PartnerBerlin housing company. Grüne Freiheit project (428 units total, 140 first phase) at Fliegerhorst Staaken with Kondor Wessels.
• Deutsche Stiftung DenkmalschutzstrategicStrategic or Co-development PartnerHeritage foundation. Collaboration on Malzfabrik renovation project (48,000 m², 2008-2018).

Scale indicators3 records

Recent moves7 records

Expansion highlights5 records

Direct peers

• Hilmer Sattler Architekten: Munich- and Berlin-based German architecture practice active in residential, office, and master planning. Comparable to ioo in delivering HOAI-compliant architectural services for institutional and public-sector clients across Germany.
• Sauerbruch Hutton: Berlin-based architecture firm known for sustainable office, cultural, and mixed-use buildings. Comparable to ioo in Berlin-headquartered practice, sustainability positioning, and engagement with institutional and developer clients on complex urban projects.
• Barkow Leibinger: Berlin- and New York-based architecture practice with comparable scale (≈40 people) and a portfolio spanning residential, commercial, and cultural projects. Similar in size, interdisciplinary ethos, and Berlin-anchored operations to ioo.
• COBE: Copenhagen- and Berlin-based architecture practice specializing in urban design, affordable housing, and large-scale residential master plans. Directly comparable to ioo in combining architecture with urban planning at affordable-housing scale across Northern Europe.
• Hascher Jehle Architektur: Berlin- and Frankfurt-based architecture firm specializing in commercial, public, and educational buildings with notable retail and office commissions. Similar in scale and Berlin positioning to ioo, with comparable engagement on institutional and developer clients.
• KSP Architekten: German architecture firm with strong Berlin office delivering office, residential, and public-sector projects. Frequently competes for Berlin municipal and developer commissions and overlaps with ioo in scale, public-client orientation, and HOAI-aligned service offerings.
• gmp · von Gerkan, Marg and Partners: One of Germany's largest architecture practices, headquartered in Hamburg with major Berlin presence. Competes directly with ioo for large-scale public residential, office, and infrastructure commissions across Germany, including stadium, transit, and housing projects.
• Bruno Fioretti Marquez: Berlin- and Frankfurt-based architecture firm focused on residential, urban, and educational projects. Direct overlap with ioo in HOAI-compliant service delivery and engagement with German public-sector and developer clients.
• Max Dudler: Berlin-, Munich-, and Zurich-based architecture firm active in residential, office, and cultural buildings. Comparable to ioo in German-market focus, mixed typology portfolio, and engagement on Berlin public and private commissions.

Broad incumbents

• David Chipperfield Architects: Internationally renowned architecture firm headquartered in Berlin with broad cultural, residential, and urban design portfolio. Already collaborates with ioo on Konnekt urban design and represents a larger, established presence in the same Berlin market.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

• Facebookfacebook.com/iooberlin
• Instagraminstagram.com/iooberlin
• LinkedInlinkedin.com/company/ioo-elwardt-lattermann-architekten

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 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 ioo Architekten