dia architecten

What dia architecten does

dia architecten is a small multidisciplinary architecture bureau based in Hasselt, Belgium, operating under a brand name that stands for Design, Interieur, Architectuur. The firm delivers architectural, interior, and design services for clients across Belgium, with principal architect Philippe Dreesen serving as the named lead and central creative authority. Its project portfolio spans residential (e.g., Villa BJ), commercial/retail (Zyso), sports (Tenkie tennis hall), recreation (HEES swimming facility), institutional (Essers refectory), and hospitality (Cafe Overpelt, Opuz) typologies, indicating a generalist practice rather than a single-sector specialist.

The firm explicitly positions itself as a small bureau that draws on a network of external partners — engineers, drafters, and specialist consultants — for larger projects, rather than maintaining a large permanent in-house team. This variable-cost operating model is the core of its business mechanics: project-based fees derived from architectural commissions on a case-by-case basis, with capacity flexed up or down via collaboration partners. The integrated Design-Interieur-Architectuur offering allows the firm to capture both shell and interior scope on individual projects. No digital platform, proprietary technology stack, AI tooling, or recurring-revenue product is part of the offering.

dia architecten competes as a founder-led boutique practice, with client acquisition appearing to rely on portfolio reputation, personal referrals, and direct principal engagement rather than marketing scale or geographic reach. The absence of disclosed headcount, revenue, or growth indicators — combined with a Belgium-only footprint — frames the firm as a stable but small-scale professional services practice. The principal risk and opportunity both center on key-person dependency: the brand and project outcomes are tightly coupled to Philippe Dreesen's involvement, which is a single point of failure for continuity and a structural constraint on scaling.

Name

dia architecten

Legal name

DIA architecten

Website

https://dia-architecten.be

Company type

Private

Operating status

Operating

Short description

dia architecten is a small multidisciplinary architecture bureau based in Hasselt, Belgium, delivering integrated architecture, interior, and design services for residential, commercial, and institutional clients, led by principal architect Philippe Dreesen.

Ownership category

akta.pro rank

Product category

Architectural Services

NAICS

Architectural Services (541310), Interior Design Services (541410)

SIC

Operative Builders (1531)

akta.pro primary industry

Architectural Design Services (BPAHAKAA)

akta.pro secondary industry

Interior Design Services (BPAHAKAB)

Keywords

• Architectural design services
• Interior architecture
• Residential architecture
• Commercial building design
• Project management

Headquarters

HQ city

Hasselt

HQ country

Belgium

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B and B2C

Offering type

Services

Cost components

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

Revenue model

1. Architecture and Design Services: DIA Architecten generates revenue through providing architectural design and project management services for residential, commercial, and institutional projects. Services include design from concept, project supervision through construction, and coordination with contractors and builders.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels3 records

Core offering

DIA architecten is a multidisciplinary architecture bureau providing Design, Interior, and Architecture (DIA) services across scales ranging from small renovations and interiors to full complexes including sports facilities, retail stores, group housing, and industrial buildings. The firm delivers end-to-end architectural services from initial site selection through schematic design, construction documentation, and final finishes, working personally with clients throughout the entire process.

Product overview

DIA Architecten is a multidisciplinary architectural firm offering a unified service portfolio spanning Design, Interior, and Architecture (DIA). The core offering is comprehensive architectural design services that cover projects of all scales—from small renovations and residential homes to large commercial complexes including sports facilities, retail stores, group housing, and industrial buildings. The firm provides end-to-end project management from initial site selection through to the final coat of paint. Their design philosophy centers on contemporary warm minimalism, though they also adapt traditional styles for modern contexts. As a small firm, they maintain flexibility while partnering with engineers, contractors, and other specialists for larger projects.

Differentiator

Problem solved

Functional benefit

Products and services

• Architectural Design Services Full-service architectural design covering Design, Interior, and Architecture (DIA), from small renovations and residential homes to large commercial complexes including sports facilities, retail stores, group housing, and industrial buildings. Service encompasses site selection, schematic design, construction documentation, and project supervision through final finishes, delivered personally by the principal architect for residential, commercial, and institutional clients in Belgium.

Named customers7 records

Segments3 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Scale indicators2 records

Expansion highlights2 records

Direct peers

• Jaspers-Eyers: Jaspers-Eyers is a Belgian multidisciplinary architecture and engineering practice serving building and urban projects. Its architecture-led services and Belgium focus make it a close regional comparator for DIA's design and project-coordination model.
• 51N4E: 51N4E is a Brussels-based architecture and design practice working across cultural, public, and residential projects. Its multidisciplinary, project-based practice is comparable to DIA's architecture and interior services.
• B-architecten: B-architecten is a Belgian architecture studio focused on buildings, interiors, and master planning. It is a direct regional peer because it combines design and realization support for residential and complex projects.
• Robbrecht en Daem: Robbrecht en Daem is a Belgian architecture office known for public, cultural, residential, and urban work. Its bespoke architecture practice and design-led orientation are similar to DIA's client-specific model.
• KAAN Architecten: KAAN Architecten is a Netherlands-based architecture firm working on cultural, residential, and public projects. Its integrated, design-led services and willingness to handle complex buildings are relevant comparables.
• Neutelings Riedijk Architects: Neutelings Riedijk Architects is a Dutch architecture studio known for cultural, residential, and mixed-use projects. Its bespoke design and large-project focus are comparable to DIA's architecture offering.

Broad incumbents

• MVRDV: MVRDV is a Dutch architecture and urbanism studio with a multidisciplinary, design-led practice. It is comparable through its architecture, interior, and large-project work, although it operates at a much larger scale.
• UNStudio: UNStudio is a Dutch architecture and design network working across buildings, interiors, and urban environments. Its multidisciplinary design and project-delivery capabilities overlap with DIA's service scope.
• OMA: OMA is an international architecture and design practice with broad experience across building types and scales. It is a broad incumbent comparator because DIA operates in the same architecture and project-realization space.
• Buro Happold: Buro Happold is a global engineering and design consultancy with strong building-sector overlap. It is a broad incumbent comparator for DIA's project coordination, technical collaboration, and delivery-oriented architecture model.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat2 records

Key risks4 records

Key highlights5 records

Customer concentration

• Facebookfacebook.com/dia.architecten
• LinkedInlinkedin.com/company/dia-architecten

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

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 dia architecten