Arkitektkontoret Nils Tveit

What Arkitektkontoret Nils Tveit does

Arkitektkontoret Nils Tveit AS (ANT) is a Norwegian architecture firm headquartered in central Drammen, with project work spanning the country from Kirkenes in the north to Arendal in the south. The firm specializes in five practice areas — rehabilitation and building preservation, swimming facilities (badeanlegg), industrial and laboratory buildings, retail and commercial centers, and residential projects — and serves both public sector clients (Statsbygg, Modum Kommune, Viken Fylkeskommune) and private enterprises (Thermo Fisher Scientific, ALTI Forvaltning, VIA Outlets/Oslo Fashion Outlet, Cooling Partner, Olav Thon Gruppen, Arendal Fossekompani). Its service offering covers the full project lifecycle: architectural design (arkitekturprosjektering), responsible applicant (ansvarlig søker), regulatory planning (regulering), landscape design (landskapsutforming), interior architecture, BIM coordination, daylight assessment, and BREEAM-certified sustainable design. Notable technical capabilities include BIM-koordinering across project phases, 3D scanning for building preservation and material reuse (ombruk), and daylight assessment as a specialist service.

The firm operates on a project-based professional services model, with revenue derived from commissions acquired through competitive tenders, direct awards from repeat clients, and architectural competitions. Pricing is not publicly disclosed but is structured as a percentage of construction cost or fixed project fees tailored to scope and complexity. ANT's credibility is anchored by the Statens pris for byggkvalitet 2018 (National Building Quality Award) for Ulstein Arena, Nordic Shopping Center of the Year 2014 (Gulskogen Senter), and Miljøfyrtårn environmental certification since 2019. The firm has cultivated a substantial co-development partner network, collaborating with Henning Larsen Architects, Hille Melbye Arkitekter, Lund+Slaatto Arkitekter, and Link arkitektur on projects that exceed its standalone capacity.

On May 18, 2026, ANT became part of Halvorsen & Reine AS, lifting the combined organization to 31 employees and relocating to renovated premises at Gamle Kirkeplass in Drammen. The merger represents the most significant structural event in the firm's recent history and creates one of the larger regional architecture practices in the Drammen area. Prior to the merger, ANT was jointly led by Joost Kors (daily manager/partner), Pawel Bogdan Kruk (technical/professional lead, partner), and founder Nils Tveit. The firm holds no public listing, has not raised outside funding, and does not disclose revenue figures.

Name

Arkitektkontoret Nils Tveit

Legal name

Arkitektkontoret Nils Tveit AS

Website

https://nilstveit.no

Company type

Private

Founded year

1952

Operating status

Acquired

Headcount range

1–10 employees

Short description

Arkitektkontoret Nils Tveit (ANT) is a Norwegian architecture firm specializing in rehabilitation, swimming facilities, industrial/laboratory buildings, retail, and residential design. As of May 2026, the firm is part of Halvorsen & Reine AS, forming a combined 31-employee practice serving public and private clients nationwide.

Ownership category

akta.pro rank

Product category

Architectural Services

NAICS

Architectural Services (54131), Architectural Services (541310), Interior Design Services (54141), Landscape Architectural Services (54132)

akta.pro primary industry

Interior Design Services (BPAHAKAB)

akta.pro secondary industry

Landscape Architecture & Site Design (BPAHAKAC)

Keywords

• Architectural design services
• Building rehabilitation
• Swimming pool facilities
• BIM coordination
• Heritage preservation

Headquarters

HQ city

Drammen

HQ country

Norway

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Technology or R&D

Revenue model

1. Arkitekturprosjektering: ANT generates revenue through providing architecture design and engineering services across multiple project categories: rehabilitation and building preservation, swimming pools and sports facilities, industry and laboratories, retail and commercial, and residential. Revenue is project-based, with each commission ranging from early-stage concept (ideutvikling) through to detailed design, permitting, and construction oversight. The firm acts as responsible applicant (ansvarlig søker) in planning processes.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels7 records

Core offering

ANT is a Norwegian architecture firm providing comprehensive architectural design (arkitekturprosjektering), responsible applicant services (ansvarlig søker), regulatory planning, landscape design, interior architecture, BIM coordination, and daylight assessment. The firm specializes in rehabilitation and building preservation, swimming pools and sports facilities, industry and laboratories, retail and commercial, and residential projects across Norway.

Product overview

Arkitektkontoret Nils Tveit (ANT) is an established Norwegian architecture firm offering comprehensive architectural services. The firm provides a full range of services including architectural design (arkitekturprosjektering), permit processing (ansvarlig søker), zoning and regulation (regulering), landscape design (landskapsutforming), interior architecture (interiørarkitektur), BIM coordination (BIM-koordinering), and daylight assessment (dagslysvurdering). The firm specializes in rehabilitation and heritage conservation (rehabilitering og vern), bathing facilities (badeanlegg), industry and laboratories (industri og laboratorie), commercial retail (handel og næring), and residential housing (bolig). Projects span Norway from Kirkenes to Arendal, with particular expertise in complex renovation of historic buildings, swimming pool facilities, and large-scale commercial developments.

Differentiator

Problem solved

Functional benefit

Products and services

• Arkitekturprosjektering (Architectural Design) Comprehensive architectural design services for projects across public and private sectors, from early-phase concept development (ideutvikling) through detailed design, permitting, and construction oversight.
• Ansvarlig søker (Responsible Applicant) Responsible applicant services for building permits and regulatory compliance throughout the construction approval process, acting as the firm's regulatory submission lead.
• Regulering (Zoning and Land Development Planning) Zoning and land development planning services, including regulatory analysis and municipal planning coordination.
• Landskapsutforming (Landscape Architecture) Landscape architecture and design services for outdoor spaces, gardens, and urban environments.
• Interiørarkitektur (Interior Architecture) Interior architecture and design services including space planning, material selection, and interior specifications.
• BIM-koordinering (BIM Coordination) Building Information Modeling (BIM) coordination services for multi-disciplinary project collaboration and clash detection.
• Dagslysvurdering (Daylight Assessment) Daylight assessment services to evaluate natural lighting conditions and compliance with daylight requirements.
• Bærekraftig byggeprosjektering (Sustainable Building Design) Sustainable building design with focus on environmental certifications including BREEAM, climate accounting, and material reuse assessment.

Quantifiable outcome

• Ulstein Arena (completed 2018, 10,000 m²) won Statens pris for byggkvalitet (National Building Quality Prize) 2018.
• +2 more outcomes

Named customers7 records

Segments5 records

Ideal customer profiles3 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 major, minor and core.

• Henning Larsen ArchitectsmajorStrategic or Co-development PartnerANT collaborated with Henning Larsen Architects on the Arendal Folkebad project (2022–ongoing), commissioned by Arendal Fossekompani and AS Backe. ANT has primary responsibility for the swimming pool portion of the building, while Henning Larsen handles the floor plan for the rest of the building as well as outdoor areas and connections to surrounding areas.
• Hille Melbye ArkitektermajorStrategic or Co-development PartnerANT collaborated with Hille Melbye Arkitekter on multiple projects including: NIH rehabilitation (2018–2021, Statsbygg commission), Økern Senter urban development project (2015–2030), and Strømmen Badeland (2015–ongoing, Olav Thon Gruppen commission).
• Link arkitekturminorStrategic or Co-development PartnerANT won the design competition for Skien Fritidspark in 2004 in collaboration with Link arkitektur. The project includes various pool types, sports facilities, and a spa area.
• Lund+Slaatto ArkitekterminorStrategic or Co-development PartnerANT collaborated with Lund+Slaatto Arkitekter on Ulstein Arena (2018, 10,000 m²), where ANT was responsible for the swimming facility portion.
• Thermo Fisher ScientificcoreOthersThermo Fisher Scientific is a major recurring client for whom ANT has completed multiple projects: chemical warehouse (2022), Oslo Cancer Cluster L4 laboratories (2024), and a rooftop cover at Svelleveien 29, Lillestrøm (2024). ANT has served as tenant advisor for laboratory design, needs assessment, user participation, and construction follow-up.
• Ingeniør Rybergs gate 48 ASminorOthersANT was commissioned to create a sketch project (skisseprosjekt) for the expansion of office premises at Ingeniør Rybergs gate 48 in Drammen, including rooftop extension with mass timber construction.
• Moderne Hytter ASminorOthersANT collaborated with Moderne Hytter AS as landowner and developer for Nesbyen Fjellgrend, developing concepts for 5 cabin models (80–130 m²) and 5 apartment buildings with 30 apartments (40–100 m² each) on a 9–163 daa area.
• Bar Bakke LandskapsarkitekterminorStrategic or Co-development PartnerANT collaborated with Bar Bakke Landskapsarkitekter on the Strømvik stupetårn (diving tower) competition proposal in Stavanger (2020), along with Luminator and Steelmaster.
• ALTI Forvaltning AScoreOthersALTI Forvaltning AS is a key client for whom ANT completed the Gulskogen torg project (2020–2025) and interior design of commercial premises in Lorkenesgata, Ålesund (2025).

Scale indicators2 records

Recent moves7 records

Expansion highlights6 records

Direct peers

• Link arkitektur: Nordic architecture firm partnering with ANT on Skien Fritidspark; overlapping expertise in leisure, sports and pool facilities with comparable Nordic project scale.
• DARK Arkitekter: Norwegian architecture firm with comparable mid-size footprint and similar residential, commercial and public project mix in the Norwegian market.
• Lund+Slaatto Arkitekter: Long-established Norwegian architecture firm that co-delivered Ulstein Arena with ANT; similar project scale and engagement model for large public facilities in Norway.
• LPO Arkitekter: Norwegian full-service architecture firm of comparable mid-size, working across residential, healthcare, education and commercial sectors; the closest direct match to ANT's broad-scope, mid-sized Norwegian practice model.
• Reiulf Ramstad Arkitekter: Norwegian architecture firm with analogous profile in public, cultural and masterplan projects and similar regional scale — a strong peer for ANT's civic/cultural competition work.
• Helen & Hard: Norwegian architecture and design practice active in residential, public and adaptive reuse work; comparable mid-size Nordic practice aligned with ANT's sustainability-led rehabilitation focus.
• Hille Melbye Arkitekter: Norwegian architecture firm collaborating with ANT on NIH and Økern Senter; comparable scale, multi-sector scope, and similar special handling of public commissions in Norway.

Broad incumbents

• White Arkitekter: One of the largest Nordic architecture practices with strong Norwegian presence in healthcare, education and sustainable design; represents the broader regional incumbent that ANT competes against for mid- and large-scale commissions.
• Nordic Office of Architecture: Large Norwegian-headquartered, multi-disciplinary architecture firm covering healthcare, education, transport and commercial sectors — competes for the same public commissions but at a larger enterprise scale.
• Snøhetta: The leading Norwegian-founded global architecture brand with a much broader portfolio and multinational footprint; competes for the same high-prestige public and cultural commissions as ANT but at a different scale.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks7 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/ArkitektkontoretNilsTveit
• LinkedInlinkedin.com/company/ant-as
• Instagraminstagram.com/ant_arkitekter

Compliance4 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles6 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 Arkitektkontoret Nils Tveit