What IRIS architecten does

IRIS architecten is a privately held Dutch architecture partnership founded in 2019 by three architects (Wouter van Riet Paap, Diederik van den Berg, and Daan Briedé) who had worked together since 2006. The firm is headquartered in Watertoren Heuveloord, a converted water tower in Utrecht, and operates with a team of approximately 11 architects and staff. It delivers bespoke architectural design services across the Netherlands, with particular specialization in heritage building transformation — including monument renovation, industrial heritage adaptive reuse, and water tower conversion — alongside residential design (villas, apartments, CPO projects), educational facilities, and select urban development. Notable completed work includes the Dudok aan het Diep restoration and public space project in Groningen (winner of four awards at the Groninger Architectuurprijs 2025) and multiple water tower transformations (Heuveloord, Lauwerhof, Culemborg).

The firm's core offering is professional architectural services billed on a project-fee basis, generated through direct client engagement, competition wins (prijsvragen), public tenders, and referrals from a network of contractors, structural engineers, and advisors. Customer segments span four verticals: private individuals seeking custom residential design, developers and housing corporations commissioning residential and urban projects, municipalities requiring public buildings and heritage restoration, and CPO groups coordinating collective private commissions. The firm has experimented with productized innovation outside core bespoke practice, including a Telescopic Mobile Home modular concept (2015) and CLT prefabrication methods (Gansstraat Utrecht, 2022).

IRIS architecten competes on a differentiated positioning of "doordachte concepten met oog voor detail" — thoughtful concepts with an eye for detail — emphasizing apparent simplicity achieved through rigorous design effort. Its competitive advantages are domain specialization (water tower and monument expertise), long-tenured partner continuity, and brand recognition amplified by the 2025 Groninger Architectuurprijs sweep. The firm operates without external investment, subsidiaries, or international expansion, and discloses no revenue figures.

Name

IRIS architecten

Legal name

IRIS architecten

Website

https://irisarchitecten.nl

Company type

Private

Founded year

2019

Operating status

Operating

Headcount range

1–10 employees

Short description

IRIS architecten is a privately held Dutch architecture partnership based in Utrecht, with a team of approximately 11, that delivers bespoke architectural design services across the Netherlands — specializing in heritage monument transformation, water tower conversion, residential design, and adaptive reuse for developers, housing corporations, municipalities, and private individuals.

Ownership category

akta.pro rank

Product category

Architectural Services

NAICS

Architectural Services (54131), Architectural Services (541310)

SIC

Services-Engineering, Accounting, Research, Management (8700)

akta.pro primary industry

Architectural Design Services (BPAHAKAA)

Keywords

• Residential architecture
• Heritage restoration
• Monument renovation
• Adaptive reuse
• Urban development

Headquarters

HQ city

Utrecht

HQ country

Netherlands

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B and B2C

Offering type

Services

Cost components

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

Revenue model

1. Architectural Design Services: IRIS architecten provides bespoke architectural design services to private individuals, developers, housing corporations, and municipalities across the Netherlands. Services include new-build residential design, renovation, heritage transformation, and adaptive reuse. Revenue is generated through professional fees for design, planning, and project supervision services.

Go-to-market motion1 record

Distribution channels3 records

Marketing channels4 records

Core offering

IRIS architecten is a Dutch architecture firm providing full-service architectural design for residential, commercial, and public buildings across the Netherlands. Their work spans new construction, renovation, monument restoration, and adaptive reuse, with particular specialization in water tower transformations, heritage buildings, educational facilities, and urban development. They serve developers, housing corporations, municipalities, and private individuals through project-based engagements, competitions, and public tenders.

Product overview

IRIS architecten is a Dutch architecture firm based in Utrecht that offers comprehensive architectural design services. Their portfolio spans residential architecture (individual homes, villas, housing complexes), urban development (large-scale residential projects), monument renovation (water towers, De Stijl buildings, post-war monuments), educational facilities, and specialized commercial projects. The firm is particularly known for water tower transformations and has developed innovative products like the Telescopic Mobile Home for modular housing. They work with developers, housing corporations, municipalities, and private individuals across the Netherlands.

Differentiator

Problem solved

Functional benefit

Products and services

• Architectural Design Services Full-service architectural design for residential, commercial, and public buildings, including new construction, renovation, and repurposing of monuments. Provided to developers, housing corporations, municipalities, and private individuals across the Netherlands.
• Residential Architecture Design of individual homes, villas, apartments, and housing complexes including CPO (collective private commissioning) projects for private individuals and developers.
• Water Tower Transformation Specialized architectural service for transforming historic water towers into modern living and working spaces. The firm's headquarters itself is located in Watertoren Heuveloord in Utrecht, demonstrating their applied expertise.
• Monument Renovation Architectural service for renovation and repurposing of national monuments, including De Stijl villas and post-war reconstruction icons. Notable project includes Dudok aan het Diep which won four of five awards at the Groninger Architectuurprijs 2025.
• Educational Building Design Design and renovation of schools and educational facilities, including extensions and internal restructuring. Clients include school foundations such as PCOU.
• Urban Development and Large-Scale Residential Design of large-scale residential complexes and urban planning projects, including apartment buildings, mixed-use developments, and courtyard housing. Served by developers and housing corporations.

Quantifiable outcome

• Dudok aan het Diep won all four categories at the Groninger Architectuurprijs 2025 — first prize professional jury, first prize public jury, GRONIEK (new Groningen classic), and most online votes
• +2 more outcomes

Named customers17 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

Feature3 records

Partnerships

Nine partnerships are on record, tiered core and minor.

• Marseille BuitencoreStrategic or Co-development Partner · 1 January 2019Marseille Buiten is a landscape architecture firm. IRIS architecten partnered with Marseille Buiten to win and execute the Dudok aan het Diep project (2019–2025), which involved the restoration, transformation, and public space design around a post-war reconstruction monument. Marseille Buiten handled the landscape design and public realm planning for the project.
• Sluijmer en van Leeuwen (Architectuurbureau)coreStrategic or Co-development Partner · 1 January 2015Architectuurbureau Sluijmer en van Leeuwen was the development partner for the Watertoren Rotsoord (Heuveloord) transformation, completed in 2015. Also collaborated on Kop van het Gildenkwartier (2016).
• Koen and Peter van der VeerminorOthersPrivate clients (Van der Veer family) for the Watertoren Culemborg transformation project, completed 2018.
• GremméminorOthersDeveloper/client for the Kubuswoning Terwijde project in Utrecht.
• Grand & JohnsonminorImplementation/ SI/ Consulting PartnerInterior design firm for the Bosvilla Bilthoven renovation project (2024). Grand & Johnson designed the interior while IRIS architecten handled the architectural renovation.
• Renomeer BVminorOthersReal estate client for the Parkvilla Haastrecht renovation project (2023).
• Cocoon LivingminorOthersInterior design firm collaborating on the Boerderij Loosdrecht transformation project (2022).
• Marseille BuitencoreStrategic or Co-development PartnerMarseille Buiten designed the garden/landscape for the Villa Johanna project in Nieuwegein (2022), integrating outdoor and indoor space.
• Lucas van der WeeminorOthersArchitectural photographer who has photographed the majority of IRIS architecten's projects, contributing to the firm's portfolio presentation and marketing materials.

Scale indicators3 records

Recent moves6 records

Expansion highlights5 records

Broad incumbents

• KAAN Architecten: Rotterdam-based Dutch architecture firm working across cultural, residential, and public building sectors. Comparable in serving Dutch municipalities and developers, though with a larger team and broader international portfolio than IRIS.
• cepezed: Dutch architecture firm known for industrial, technical, and adaptive reuse projects. Comparable specifically in the adaptive reuse and industrial-heritage segment where IRIS specializes in water towers and monuments.
• Mecanoo Architecten: Large established Dutch architecture firm with broad portfolio across residential, public, and heritage projects. Comparable as a Dutch-based architecture practice competing in similar public tenders and residential markets, though at significantly greater scale and with much broader international reach.
• Benthem Crouwel Architects: Amsterdam-based Dutch architecture firm with strong credentials in public buildings, transport, and residential design. Comparable as a Dutch competitor for municipal and developer-led commissions, with comparable pedigree but greater scale.
• Paul de Ruiter Architects: Dutch sustainable architecture firm known for energy-neutral and circular design. Comparable in Dutch market positioning and emphasis on sustainability in residential and commercial projects, though larger in scale.

Direct peers

• Office Winhov: Amsterdam-based boutique Dutch architecture practice focused on high-quality residential, monument restoration, and adaptive reuse projects. Closely comparable to IRIS in scale, philosophy, and emphasis on heritage and refined residential work.
• ZUS (Zones Urbaines Sensibles): Rotterdam-based Dutch architecture and urbanism practice with strong heritage, public space, and adaptive reuse credentials (similar to IRIS's Dudok aan het Diep approach). Directly comparable in philosophical approach to urban transformation and monument integration.
• Wiel Arets Architects: Maastricht-based Dutch architecture practice with strong credentials in residential, monument intervention, and adaptive reuse. Comparable in scale, philosophical positioning, and Dutch heritage-specialization segment to IRIS.
• MIX architectuur: Utrecht-based architecture firm with comparable scale and residential/urban development focus. Competes with IRIS in the Utrecht regional market for developer and housing corporation commissions.
• Studio MAKS: Utrecht-based Dutch architecture studio with similar boutique positioning and focus on residential and urban design. Comparable in scale, geography (Utrecht), and segment focus to IRIS architecten.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat3 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xtwitter.com/IRISarchitecten
• LinkedInlinkedin.com/company/irisarchitecten
• Facebookfacebook.com/IRISarchitecten

Revenue estimate

Valuation estimate

Number of profiles

Profiles8 records

Funding overview

Funding rounds

Investors

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M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about IRIS architecten