HJK architecten
HJK architecten is a Groningen-based Dutch architecture firm, founded in 1957, specializing in social housing, care facilities, and community buildings for housing corporations, healthcare organizations, and municipalities, using BIM-based design with growing focus on circular and biobased construction.
- Company typePrivate
- Founded1957
- HeadquartersGroningen, Netherlands
- Headcount11–50
- GTM typeB2B
- OfferingServices
What HJK architecten does
HJK architecten is a privately held architectural practice headquartered in Groningen, Netherlands, founded in 1957 (originally as Haykens & Jansma). The firm specializes in architectural design and realization services for residential social housing, care-housing complexes, schools, commercial buildings, and community utility projects, serving housing corporations, healthcare organizations, municipalities, and private developers primarily in northern and increasingly central/western Netherlands. Its technical foundation rests on Building Information Modeling (BIM), with in-house capabilities spanning 2D and 3D design, energy performance, daylight, and ventilation calculations from concept (telmodel) through execution-ready drawings.
The firm's service portfolio covers new construction, renovation, restoration, urban planning, and monument restoration, with a growing emphasis on circular and biobased construction methods, including the ClickBrick Pure dry-stacked facade system and biobased renovations using wood frame, cellulose insulation, and Riwood biocomposites. It operates under a project-based professional services model with project-by-project engagement and direct client relationships, notably including Actium since 2008. HJK maintains an ecosystem of co-development partnerships with construction firms such as Brands Bouw, Hunebouw, Geveke, Hesco Bouw, Dura Vermeer, and Bouwgroep DE Jong, as well as landscape architect Polyfern.
The firm is small (~13 employees) and currently led by architects Harry Nanninga and Jens Wind following the retirement of former co-leader Cees Gelens. It is currently temporarily operating from De Halm at Halmstraat 1 in Hoogkerk while its Maupertuus headquarters undergoes renovation by developer MWPO. The firm has earned regional recognition through nominations such as the Drentse Architectuurprijs 2023 and Duurzame 30, and relies on its project portfolio website, industry publications, Facebook presence, and referrals as primary marketing channels.
HJK architecten firmographics
Firmographics- Name
- HJK architecten
- Legal name
- HJK architecten
- Website
- https://hjk-architecten.nl
- Company type
- Private
- Founded year
- 1957
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- HJK architecten is a Groningen-based Dutch architecture firm, founded in 1957, specializing in social housing, care facilities, and community buildings for housing corporations, healthcare organizations, and municipalities, using BIM-based design with growing focus on circular and biobased construction.
- Ownership category
- akta.pro rank
HJK architecten industry classification
Industry- Product category
- Architectural Services
- NAICS
- Architectural Services (54131), Architectural Services (541310), Interior Design Services (54141)
- SIC
- General Bldg Contractors - Residential Bldgs (1520)
- akta.pro primary industry
- Architectural Design Services (BPAHAKAA)
- akta.pro secondary industries
- Architectural Reconfiguration & Structural Alterations (HSAPAEAB), Office & Corporate Building Construction (IMAFACAA)
Keywords
Where HJK architecten is headquartered
LocationHeadquarters
- HQ city
- Groningen
- HQ country
- Netherlands
- HQ region
- Europe
Offices3 records
Markets served
HJK architecten business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Operations, Marketing or Sales, Technology or R&D, Infrastructure
Revenue model
- Architectural Design Services: Professional and creative services in design and realization of construction projects including new construction, renovation, restoration, urban planning explorations, and monument restoration
Go-to-market motion1 record
Distribution channels1 record
Marketing channels4 records
HJK architecten product offering
Product offeringCore offering
HJK architecten provides professional architectural design services for residential housing, social housing, care-housing complexes, schools, sports facilities, and commercial/utility buildings. Their offering spans new construction, renovation, restoration, urban planning, and monument restoration across the northern and central/western Netherlands. Services include BIM trajectory management, energy performance and daylight/ventilation calculations, construction management, and multi-year maintenance planning for housing corporations, healthcare organizations, municipalities, and private developers.
Product overview
HJK architecten is an architectural firm established in 1957 in Groningen, Netherlands, offering professional design and construction management services. The company provides architectural services across residential housing (social and private), care-housing complexes, schools, commercial buildings, and utility projects, covering new construction, renovation, and urban planning. Their service portfolio includes BIM trajectory management, energy performance calculations, daylight and ventilation calculations, and project management. The firm operates throughout the northern provinces and central/western Netherlands, with key projects including Horstendaal en Saanensduin (64 care studios), Maranathaflat (43 apartments), Sonnevanck (48 care studios), De Steiger (36 apartments), and the Wijk van de Toekomst circular housing development. The firm emphasizes sustainable and circular construction practices, with projects like biobased renovations and energy-efficient retrofits.
Differentiator
Problem solved
Functional benefit
Quantifiable outcome
- Circular carport with 450 solar panels for Actium - CO2-neutral charging for employees and visitors
- +2 more outcomes
Companies that use HJK architecten
Customer profileNamed customers10 records
Segments4 records
Ideal customer profiles3 records
HJK architecten technology and API
TechnologyAPI detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature4 records
HJK architecten partnerships and signals
Strategic signalPartnerships
Eight partnerships are on record, tiered core and major.
- Polyfern Landscape architectscoreCollaborative partnership on urban development projects such as the Dreuplein project in Assen, transforming commercial areas into green residential environments.
- ZorgbalanscoreHealthcare organization specializing in care housing. HJK has designed multiple care complexes for Zorgbalans including Horstendaal & Saanensduin (64 studios) and Sonnevanck (48 studios).
- Bouwgroep DE JongmajorConstruction partner for biobased renovation project in Bovensmilde (14 homes) in collaboration with Actium.
- Brands BouwmajorRegular construction partner on multiple projects including Maranathaflat, Eikenwal, and Harm Kuiper sports complex.
- HunebouwmajorConstruction partner for Wijk van de Toekomst projects in Gieten using circular ClickBrick facade system.
- GevekemajorConstruction partner for multiple residential projects including Parkwonen De Eendracht (24 homes) and Dreuplein Assen (38 apartments + 2 homes).
- Hesco BouwmajorConstruction partner for Van Linschotenstraat project in Hoogezand (18 social apartments).
- Dura VermeermajorConstruction partner for De Steiger apartment complex in Assen (36 apartments).
Scale indicators3 records
Recent moves7 records
Expansion highlights6 records
HJK architecten competitors and assessment
Company assessmentDirect peers
- KAW: Rotterdam-based Dutch architectural firm specializing in social housing, area development, and regeneration — the closest direct peer to HJK in terms of client base (Dutch housing corporations) and project type (social housing and area renewal).
- Tangram Architekten: Dutch architecture firm working on residential, care, and educational projects for housing corporations and public clients — comparable in scale, service portfolio, and Dutch social housing focus.
- Studio MAKS: Dutch architecture practice focused on residential and social housing projects, including renovations and new construction for housing corporations — directly comparable in scale, sector focus, and Dutch regional delivery model.
- Klunder Architecten: Dutch architecture firm with a strong portfolio in residential, social housing, and inner-city redevelopment projects — comparable in size and in serving Dutch housing corporations.
- Mei architects: Mid-sized Dutch architecture firm with extensive social housing and care facility experience, serving housing corporations and healthcare organizations — directly comparable in mission, sector, and project type.
- Arons en Gelauff Architecten: Amsterdam-based Dutch architecture firm with experience in housing, healthcare, and public buildings — a comparable mid-sized Dutch practice serving similar institutional clients.
- LAP architects & advisors: Dutch architecture firm with a comparable size and focus on social housing, healthcare, and educational buildings, working with housing corporations and municipalities — a strong direct comparability match for HJK's niche.
Broad incumbents
- De Zwarte Hond: Larger Dutch architecture firm with a broad portfolio including housing, healthcare, education, and urban development — overlapping with HJK in residential and care segments but operating at greater scale and broader geography.
- Wissing Stedenbouw en Architectuur: Dutch urban planning and architecture firm with a long-standing presence in residential and area development across the Netherlands — overlapping with HJK's urban planning explorations and housing corporation work.
Emerging players
- Buro Lubbers: Dutch landscape/urban design firm collaborating with housing corporations and municipalities on area-oriented projects — overlapping with HJK's Dreuplein/Polyfern-style urban regeneration work and sustainable site design.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat4 records
Key risks6 records
Key highlights7 records
Customer concentration
HJK architecten social profiles
Digital presenceHJK architecten financial estimates
Financial estimateRevenue estimate
Valuation estimate
HJK architecten leadership team
Management profileNumber of profiles
HJK architecten funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
HJK architecten M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about HJK architecten
What does HJK architecten do?
HJK architecten provides professional architectural design services for residential housing, social housing, care-housing complexes, schools, sports facilities, and commercial/utility buildings. Their offering spans new construction, renovation, restoration, urban planning, and monument restoration across the northern and central/western Netherlands. Services include BIM trajectory management, energy performance and daylight/ventilation calculations, construction management, and multi-year maintenance planning for housing corporations, healthcare organizations, municipalities, and private developers.
Is HJK architecten a public or private company?
HJK architecten is a private company. It is classified as management employee owned and is currently operating.
When was HJK architecten founded?
HJK architecten was founded in 1957. It employs 11 to 50 people.
Where is HJK architecten based?
HJK architecten is headquartered in Groningen, Netherlands, in the Europe region.
How does HJK architecten make money?
One revenue line is on record: architectural Design Services.
Who are HJK architecten's main competitors?
Direct peers on record are KAW, Tangram Architekten, Studio MAKS, Klunder Architecten, Mei architects, Arons en Gelauff Architecten and LAP architects & advisors. Broad incumbents are De Zwarte Hond and Wissing Stedenbouw en Architectuur. Buro Lubbers is listed as an emerging player.
Does HJK architecten have an API?
No public API is recorded for HJK architecten.
What industry is HJK architecten in?
HJK architecten's product category is Architectural Services. Its primary akta.pro industry code is BPAHAKAA, Architectural Design Services, with a secondary code of HSAPAEAB, Architectural Reconfiguration & Structural Alterations. Its NAICS code is 54131 and its SIC code is 1520.