callactive

Architectural Servicescallactive.nl

Callactive Architects is a Netherlands-based architecture practice founded in 2020 by brothers Kaan and Okan Kalak, offering architectural design, concept development, urban planning, and feasibility studies for housing corporations, project developers, and private individuals across the Etten-Leur, Breda, Roosendaal, and Moerdijk regions.

Company typePrivate
Founded2020
HeadquartersEtten-Leur, Netherlands
Headcount—
GTM typeB2B
OfferingServices

What callactive does

Callactive Architects is a Netherlands-based architecture practice founded in 2020 by brothers Kaan Kalak and Okan Kalak, headquartered in Etten-Leur, North Brabant. The firm offers a portfolio of professional architecture and spatial design services spanning residential new-build, transformation and renovation projects, concept development, urban and area development, feasibility studies, and specialized nature-inclusive and circular living solutions. Its project work covers scales from individual housing to city-center masterplans, with documented engagements including an 18-studio development (Schoonhout), an office-to-residential transformation for housing corporation Alwel, the Hof van den Houte Centrumplan in Etten-Leur, a nature-inclusive new-build feasibility study in Breda (Gageldonksestraat 24), and a 75-unit youth apartment concept ("Rock").

The firm operates as a micro-practice (stated headcount of 2+), with the two founding partners functioning as the primary architects and client-facing principals. Revenue is generated on a project-based, quote-based professional services model, with each engagement scoped and priced individually rather than through published rate cards. Go-to-market is direct, relationship-led engagement with housing corporations, project developers, and private individuals across the Etten-Leur, Breda, Roosendaal, and Moerdijk regions, supplemented by a website portfolio, LinkedIn, and Instagram for top-of-funnel visibility. There is no technology platform, AI/ML capability, or recurring software product; the offering is human-led architectural and urban design services.

The customer base is concentrated in Dutch social housing providers (notably Alwel) and regional real-estate developers pursuing residential and area development projects. Pricing is bespoke and not publicly disclosed, and the firm maintains no announced funding rounds, partnerships, or M&A activity. The company's stated differentiator is an "integral" methodology combining architecture, concept development, and urban planning under a forward-looking 2050 sustainability lens, with founders positioning the practice as a collective that activates space from neighborhood to building scale.

callactive firmographics

Firmographics

Name: callactive
Legal name: Callactive Architects
Website: https://callactive.nl
Company type: Private
Founded year: 2020
Operating status: Operating
Short description: Callactive Architects is a Netherlands-based architecture practice founded in 2020 by brothers Kaan and Okan Kalak, offering architectural design, concept development, urban planning, and feasibility studies for housing corporations, project developers, and private individuals across the Etten-Leur, Breda, Roosendaal, and Moerdijk regions.
Ownership category
akta.pro rank

callactive industry classification

Industry

Product category: Architectural Services
NAICS: Architectural Services (54131), Architectural Services (541310)
akta.pro primary industry: Architectural Design Services (BPAHAKAA)
akta.pro secondary industries: ADU Design, Architecture & Engineering (HSAPAMAF), Architectural Reconfiguration & Structural Alterations (HSAPAEAB), Residential Design-Build & Renovation-Integrated Builders (IMAFABAE)

Keywords

Architecture services
Spatial design
Urban planning
Concept development
Residential development

Where callactive is headquartered

Location

Headquarters

HQ city: Etten-Leur
HQ country: Netherlands
HQ region: Europe

Offices1 record

Markets served

callactive business model

Business model

GTM type: B2B
Offering type: Services
Cost components: Personnel, Operations, Marketing or Sales

Revenue model

Architecture and Design Services: Project-based architecture and spatial design services for housing corporations, project developers, and private individuals. Revenue generated through conceptual development, design, and project realization across residential and urban development projects.

Go-to-market motion2 records

Distribution channels1 record

Marketing channels4 records

callactive product offering

Product offering

Core offering

Callactive Architects provides professional architecture and spatial design services across scales ranging from individual housing to city centers. Its core offerings include architectural design for residential new-build and transformation projects, spatial concept development, area and urban planning services, feasibility studies, and specialized nature-inclusive and circular housing design. Services are delivered through project-based engagements for housing corporations, project developers, and private individuals in the regional Netherlands market.

Product overview

Callactive Architects is an architecture firm founded in 2020 by Kaan and Okan Kalak, operating as a single unified practice offering architectural design, concept development, urban development, and feasibility study services. The firm works at every scale level, from individual housing to city centers, providing integral spatial solutions for corporations, project developers, and private clients. Their core service portfolio includes Architecture Services, Concept Development, Urban Development, Feasibility Studies, Nature-Inclusive & Circular Living Solutions, and Housing Development. The firm focuses on collaboration, space activation, and creating future value for a better 2050.

Differentiator

Problem solved

Functional benefit

Products and services

Architecture Services
Concept Development
Urban Development
Feasibility Studies
Nature-Inclusive & Circular Living Solutions
Housing Development

Companies that use callactive

Customer profile

Named customers3 records

Segments3 records

Ideal customer profiles2 records

callactive technology and API

Technology

Technology focussed No

API detail

Has API: No
API docs
API detail

Core technology

AI maturity

App detail

callactive partnerships and signals

Strategic signal

Scale indicators2 records

Recent moves5 records

Expansion highlights4 records

callactive competitors and assessment

Company assessment

Direct peers

KAW Architecten: Dutch architecture firm with deep focus on social housing, residential transformation, and area development for housing corporations. Highly comparable to Callactive's enterprise client base and residential/transformation project mix.
K3 architectuur: Mid-sized Dutch practice working on housing, urban development, and concept design. Closely aligned with Callactive's integral, multi-scale approach and its mix of housing corporations and developer clients.
Bedaux de Brouwer Architecten: Dutch residential architecture firm known for custom housing and transformation projects. Comparable in service scope and customer segments to Callactive's private-client and developer engagements.
De Zwarte Hond: Dutch architecture and urbanism firm working on housing, area development, and sustainable residential projects. Comparable mix of social housing and urban-scale assignments served by Callactive.
Dam & Partners Architecten: Dutch residential architecture specialist focused on housing corporations and developer-led residential projects. Closely matches Callactive's project types and enterprise client profile.
VMX Architects: Dutch architecture practice with residential, transformation, and urban development work. Comparable service portfolio and project scale to Callactive.
Studio MAKS: Small Dutch architecture studio with comparable founder-led practice model and residential/urban design focus. Similar in size, positioning, and design-led value proposition to Callactive.

Broad incumbents

Mecanoo: Established Dutch architecture firm operating across residential, urban, and public commissions. Represents the larger, established end of the Dutch market that competes for the same housing corporation and developer briefs Callactive targets.
MVRDV: Internationally recognized Dutch architecture firm with significant residential and urban development portfolio. Sets the competitive ceiling for Dutch firms working in area development and high-density housing.
UNStudio: Global Dutch architecture firm with sustainability-oriented residential and mixed-use projects. Comparable sustainability positioning and serves as a scaled competitor for premium developer-led briefs.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat2 records

Key risks6 records

Key highlights5 records

Customer concentration

callactive financial estimates

Financial estimate

Revenue estimate

Valuation estimate

callactive leadership team

Management profile

Number of profiles

Profiles2 records

callactive funding detail

Funding detail

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

callactive M&A and investment

M&A and investment

M&A

Investments

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

Frequently asked questions about callactive

What does callactive do?

Is callactive a public or private company?

callactive is a private company. It is classified as founder individual operated bootstrapped and is currently operating.

When was callactive founded?

callactive was founded in 2020.

Where is callactive based?

callactive is headquartered in Etten-Leur, Netherlands, in the Europe region.

How does callactive make money?

One revenue line is on record: architecture and Design Services.

Who are callactive's main competitors?

Direct peers on record are KAW Architecten, K3 architectuur, Bedaux de Brouwer Architecten, De Zwarte Hond, Dam & Partners Architecten, VMX Architects and Studio MAKS. Broad incumbents are Mecanoo, MVRDV and UNStudio.

Does callactive have an API?

No public API is recorded for callactive.

What industry is callactive in?

callactive's product category is Architectural Services. Its primary akta.pro industry code is BPAHAKAA, Architectural Design Services, with a secondary code of HSAPAMAF, ADU Design, Architecture & Engineering. Its NAICS code is 54131.