Heggelund & Koxvold

What Heggelund & Koxvold does

Heggelund & Koxvold AS (HK Arkitekter) is a Norwegian architectural consultancy firm founded in Oslo in 1983 by Jon Heggelund and Tore Koxvold, providing design and planning services across seven practice areas: residential (Bolig), holiday homes (Fritidsboliger), public buildings (Offentlig), culture and commercial (Kultur/Næring), transport and offshore (Samferdsel/Offshore), competition entries (Konsept/Konkurranse), and rehabilitation (Rehabilitering). The 15-person team comprises chartered architects (MNAL/SAFA), an interior architect (MNIL), a structural engineer, a spatial planner, CAD operators, and administrative staff, with Frank Trømborg Bjørnsen as Managing Director since January 2020. Core methodology is BIM-prosjektering and 3D visualisering, applied to a portfolio that spans southern Norway (Trysil, Ringebu, Norefjell) to northern Norway (Mo i Rana, Båtsfjord) and Svalbard.

The firm serves two primary verticals: public sector clients (Norwegian municipalities, county entities, and government agencies such as Undervisningsbygg Oslo KF, Oslobygg KF, Bane NOR, and Hole and Ringerike kommuner) and private sector clients (hotel and ski-resort operators including Skistar, The Lodge Trysil AS, Norefjell Prosjektutvikling, and Radisson Blu Resort Trysil, plus property developers). Revenue is generated through project-based professional service fees, awarded via public tenders and architectural competitions or via direct commissions from established private clients. Differentiating credentials include Sentral godkjenning at Tiltaksklasse 3 from DIBK, Miljøfyrtårn environmental certification, and a track record of BREEAM Excellent, FutureBuilt, and Plusthus certifications on delivered projects (Hasselhaugen barnehage, Stasjonsfjellet skole).

HK Arkitekter has been majority-owned (78%) by Dark Design Group since February 2026, with the firm continuing to operate as an independent entity alongside DDG's sister companies Dark Arkitekter, Zinc, and LARK Landskap from shared premises at Drammensveien 130, Skøyen, Oslo. GTM is direct enterprise field sales into the public tender system and private developer relationships, supported by Instagram/Facebook organic content, earned media (Aftenposten, Byggeindustrien, regional press), and Open House Oslo participation. Pricing is per-project and not publicly disclosed.

Name

Heggelund & Koxvold

Legal name

Heggelund & Koxvold AS

Website

https://hkark.no

Company type

Private

Founded year

1983

Operating status

Operating

Headcount range

11–50 employees

Short description

HK Arkitekter is a 15-person Oslo-based architecture firm, founded in 1983, providing design, planning, and rehabilitation services across residential, public, commercial, and hospitality projects in Norway. Since February 2026, 78% of the firm is owned by Dark Design Group.

Ownership category

akta.pro rank

Product category

Architectural Services

NAICS

Architectural Services (54131), Architectural Services (541310), Interior Design Services (54141)

akta.pro primary industry

Architectural Design Services (BPAHAKAA)

akta.pro secondary industry

Interior Design Services (BPAHAKAB)

Keywords

• Architectural design services
• Building rehabilitation
• Public sector architecture
• Sustainable building design
• Heritage restoration architecture

Headquarters

HQ city

Oslo

HQ country

Norway

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. Arkitektur- og prosjekteringstjenester: Professional services firm generating revenue through architecture, spatial planning, interior design, and project management consulting fees for public and private clients. Revenue is project-based, driven by awarded commissions, competitions, and direct engagements.

Go-to-market motion1 record

Distribution channels2 records

Marketing channels4 records

Core offering

HK Arkitekter delivers professional architectural design and planning services across seven service areas — residential (Bolig), holiday homes (Fritidsboliger), public buildings (Offentlig), cultural and commercial (Kultur/Næring), transport and offshore (Samferdsel/Offshore), competition entries (Konsept/Konkurranse), and rehabilitation (Rehabilitering). Engagements span concept studies, planning, detail design, interior architecture, project management, and follow-through for public sector bodies and private property developers across Norway. Design delivery is supported by BIM-prosjektering and 3D visualisering as standard tools.

Product overview

HK Arkitekter is an established Norwegian architectural consultancy firm founded in 1983, providing comprehensive architectural design services across seven core service categories: Bolig (residential), Fritidsboliger (holiday homes), Offentlig (public buildings), Kultur/Næring (cultural/commercial), Samferdsel/Offshore (transport/offshore), Konsept/Konkurranse (competition entries), and Rehabilitering (rehabilitation). The firm employs 15 staff including civil architects, building engineers, interior architects, spatial planners, CAD operators, and administrative personnel. Their design methodology incorporates BIM-prosjektering (Building Information Modeling) and 3D-visualisering (3D visualization) as core tools in their work process. The firm operates under Dark Design Group following a 78% acquisition in 2026, while maintaining its independent brand and operations.

Differentiator

Problem solved

Functional benefit

Products and services

• Residential Architecture (Bolig) Architectural design and project delivery for residential projects including apartments, terraced housing, and single-family homes for private developers and individuals across Norway.
• Holiday Home Architecture (Fritidsboliger) Architectural design for vacation properties, mountain cabins, ski resort apartments, and resort hotels in Norwegian ski destinations such as Trysil, Geilo, Norefjell, Hemsedal, and Kvitfjell.
• Public Buildings Architecture (Offentlig) Architectural services for public sector projects including schools, kindergartens, healthcare facilities, nursing homes, and special-needs schools, delivered to municipalities and government real estate entities across Norway.
• Cultural and Commercial Architecture (Kultur/Næring) Design services for cultural venues, theaters, restaurants, and commercial properties, including projects such as Nordland Teater, Edderkoppen Teater, and Olympique Norefjell.
• Transport and Offshore Architecture (Samferdsel/Offshore) Architectural and engineering design for transport infrastructure (including glass elevator additions at Fredrikstad stasjon and Lørenskog stasjon for Bane NOR) and offshore platform design for oil and gas operators.
• Competition Entries (Konsept/Konkurranse) Design submissions for open architectural competitions for public and cultural buildings such as Svalbard Kulturhus, Båtsfjord Ungdomsskole, and Bjørvika Fire Station, used to acquire public-sector commissions.
• Building Rehabilitation and Restoration (Rehabilitering) Building rehabilitation and restoration services including listed/heritage building restorations and adaptive reuse projects such as Nedre Foss Gård reconstruction (post-fire), Fagerborg Skole, and Sjokoladefabrikken.

Quantifiable outcome

• Stasjonsfjellet skole achieved 58% reduction of CO2 compared to TEK10 new build standard, meeting Passivhus (Passive House) standard through FutureBuilt program
• +2 more outcomes

Named customers14 records

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature2 records

Partnerships

Six partnerships are on record, tiered core and minor.

• Dark Design Group (DDG)coreStrategic or Co-development Partner · 1 February 2026Dark Design Group acquired 78% of the shares in HK Arkitekter. HK continues as an independent company while operating in close collaboration with DDG. HK moved into Dark's offices at Drammensveien 130, Skøyen, Oslo in March 2023 alongside sister companies Dark Arkitekter, Zinc, and LARK Landskap. DDG is a multidisciplinary architecture and design house.
• Stein Halvorsen ArkitekterminorStrategic or Co-development Partner · 1 January 2018Collaborated with Stein Halvorsen Arkitekter on the Båtsfjord Ungdomsskole competition project (BRA 6,018 m2, competition 2018).
• Puls Arkitekter ASminorStrategic or Co-development Partner · 1 January 2002Collaborated with Puls Arkitekter AS on the Voksentoppen skole project (special school for children with chronic health conditions, approx. 2,200 m2, completed 2002).
• Dark ArkitekterminorOthersSister company within Dark Design Group. Dark Arkitekter shares office premises with HK Arkitekter at Drammensveien 130, Oslo.
• ZincminorOthersSister company within Dark Design Group. Zinc shares office premises with HK Arkitekter at Drammensveien 130, Oslo.
• LARK LandskapminorOthersSister company within Dark Design Group. LARK Landskap shares office premises with HK Arkitekter at Drammensveien 130, Oslo.

Scale indicators4 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• AART: Nordic architecture firm with Norwegian projects across housing, public buildings and urban design. Comparable in scale and building-type mix, particularly for residential and public-sector competition entries.
• Dark Arkitekter: Norwegian architecture firm with overlapping building-type coverage (residential, public, commercial, interior). Now a sister company within Dark Design Group after HK's 2026 acquisition, sharing office space at Skøyen, Oslo.
• Dyrvik Arkitekter: Mid-sized Norwegian architecture firm with comparable portfolio in public, cultural and residential projects, including rehabilitation work. Direct competitor for the same pool of mid-tier Norwegian public commissions.
• LARK Landskap: Sister company within Dark Design Group specializing in landscape architecture, sharing the Skøyen office. Direct peer because HK's portfolio (e.g., Hasselhaugen, public squares) integrates landscape elements and the two firms cross-refer within DDG.
• Lund+Slaatto Arkitekter: Oslo-based architecture firm with comparable mid-size scale and a portfolio spanning public, commercial and residential work. Direct competitor for Norwegian public-sector competitions and private commissions.
• Hille Melbye Arkitekter: Oslo-based architecture firm of similar mid-size profile, active in public buildings, schools, healthcare and residential work. Competes head-to-head with HK for Norwegian public tenders and framework agreements.

Broad incumbents

• Snøhetta: Norwegian-founded global architecture and design firm with strong cultural and public-building credentials (e.g., libraries, performing arts). Competes for high-profile cultural commissions and represents a much larger, established benchmark in the same design space.
• Nordic Office of Architecture: Large Norwegian-headquartered architecture firm with strong public-sector and transport infrastructure credentials, including rail and stations. Comparable to HK's transport/offshore and public-building work, but at substantially greater scale.
• Link Arkitektur: Large Norwegian architecture firm part of the Sweco group, with broad coverage in public buildings, schools and healthcare. Overlaps with HK's public-sector focus but at significantly greater scale and with broader geographic reach.
• C.F. Møller: Major Scandinavian architecture and design firm with deep Norwegian presence. Comparable because HK's MD Frank Trømborg Bjørnsen spent 10 years at C.F. Møller, and the firms compete for similar public and healthcare commissions in Norway.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• Instagraminstagram.com/hkarkitekter_
• Facebookfacebook.com/hk.arkitekter

Compliance3 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles4 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 Heggelund & Koxvold