FSN Nordfönster AB (tidigare FSN Fönsterspecialisten Norrland AB)

What FSN Nordfönster AB (tidigare FSN Fönsterspecialisten Norrland AB) does

FSN Nordfönster AB is a privately held Swedish window replacement contractor (fönsterentreprenör) that operates as a supplier-independent intermediary between multiple window manufacturers and end customers. Founded in 1989 in Ångermanland and re-headquartered in Skellefteå following a 2007 ownership change, the company delivers window replacement and renovation projects nationwide across Sweden, with a project office in Umeå. Its core services cover five customer verticals: housing cooperatives (bostadsrättsföreningar), municipal public housing companies (allmännyttiga bostadsföretag), private property companies and homeowners (privata fastighetsbolag), publicly owned property companies (offentliga fastighetsbolag), and public infrastructure projects (offentliga projekt). FSN does not manufacture windows; instead it selects and coordinates across leading window suppliers to match project-specific functional requirements such as noise reduction, energy efficiency, security, and aesthetics.

The company's primary technical differentiator is a domain specialization in noise reduction (bullersanering) solutions developed through years of work for government agencies including Trafikverket and Swedavia on infrastructure-driven noise mitigation. FSN is certified under ISO 9001, ISO 14001, and BF9K, holds an AAA credit rating from Dun & Bradstreet, and was recognized as a Dagens Industri Gazelle Company in 2013, 2014, and 2015. Operations are managed by a dedicated project manager assigned to each engagement, with on-site presence throughout installation and structured resident communication for housing association projects.

The business model is project-based and quote-driven, with revenue generated through one-time contracts rather than recurring subscriptions. Customers contact the company directly for custom proposals based on property size, window specifications, and scope. Turnover is reported at approximately 115 Mkr SEK, having tripled since the 2007 ownership transition, with consistent profitability. The company is led by CEO Ulf Rosenius under a board-led governance structure introduced after 2007.

Name

FSN Nordfönster AB (tidigare FSN Fönsterspecialisten Norrland AB)

Legal name

FSN Nordfönster AB

Website

https://fsnn.se

Company type

Private

Founded year

1989

Operating status

Operating

Headcount range

1–10 employees

Short description

FSN Nordfönster AB is a Swedish supplier-independent window replacement contractor serving housing cooperatives, public housing companies, private property firms, public property owners, and government infrastructure projects nationwide, with a specialized focus on noise-mitigation window solutions.

Ownership category

akta.pro rank

Product category

Window Replacement and Building Renovation Services

NAICS

Glass and Glazing Contractors (23815)

SIC

General Bldg Contractors - Residential Bldgs (1520)

akta.pro primary industry

Window Replacement (Residential) (HSAPAJAA)

Keywords

• Window replacement services
• Building envelope renovation
• Residential glazing services
• Property refurbishment
• Energy-efficient windows

Headquarters

HQ city

Skellefteå

HQ country

Sweden

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B and B2C

Offering type

Services

Cost components

Personnel, Operations, Supply Chain, Marketing or Sales, Others

Revenue model

1. Window Replacement Projects: Project-based revenue from window replacement and renovation services for housing associations, property companies, and public sector clients. Revenue is generated through one-time project contracts rather than recurring subscription models.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels1 record

Core offering

FSN Nordfönster AB is a Swedish window replacement specialist that plans, coordinates, and installs new windows for housing associations, property companies, public sector clients, and private homeowners across northern Sweden. The company acts as a project contractor rather than a manufacturer, managing end-to-end window renovation projects from initial survey and quotation through to installation and finishing works. It operates from its headquarters in Skellefteå with an additional project office in Umeå.

Product overview

FSN Nordfönster AB is a window replacement contractor (fönsterentreprenör) offering supplier-independent window replacement services across all of Sweden. The company does not manufacture windows itself but instead partners with multiple leading window manufacturers to ensure the optimal solution for each project. Their core offerings consist of five specialized window replacement service categories: (1) Fönsterbyte bostadsrättsföreningar for housing cooperatives, (2) Fönsterbyte offentliga projekt for public infrastructure projects, (3) Fönsterbyte allmännyttiga bostadsföretag for municipal housing companies, (4) Fönsterbyte privata fastighetsbolag for private property owners, and (5) Fönsterbyte offentliga fastighetsbolag for public property companies. Services span the entire project lifecycle from initial consultation through installation, with dedicated project managers on-site throughout execution. The company has built particular expertise in noise reduction (bullersanering) solutions and serves clients from Skellefteå in the north to Oxelösund in the south.

Differentiator

Problem solved

Functional benefit

Products and services

• Window Replacement Services
• Property Refurbishment Project Management

Quantifiable outcome

• Revenue tripled since new ownership in 2007 to approximately 115 Mkr

Named customers2 records

Segments5 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature1 record

Scale indicators4 records

Recent moves6 records

Expansion highlights4 records

Broad incumbents

• Skanska AB: Major Swedish construction and residential developer. Comparable as a broad incumbent that performs window replacement as part of larger renovation, residential, and infrastructure projects, competing for the same property-company and public-sector buyers.
• Inwido AB: Sweden-listed group and the largest window manufacturer in the Nordic region, owning brands such as Elitfönster. Comparable as a broad incumbent with end-to-end window capabilities that can encroach on FSN's pure-installer positioning.
• NCC AB: One of Sweden's largest construction groups with a building-renovation business line that includes window and facade upgrades. Comparable as a broad incumbent able to bundle window replacement into larger renovation contracts.
• NorDan AB: Nordic window and door manufacturer with strong presence in Sweden and Norway. Comparable as a large incumbent offering both manufactured products and project execution capabilities relevant to the same B2B property-company buyers.
• Elitfönster AB: One of Sweden's largest window manufacturers and a likely supplier to FSN. Comparable as a major incumbent in the Swedish window value chain that also offers installation-adjacent services, competing with FSN for end-customer relationships.
• SP Fönster (Traryd Fönster): Swedish window manufacturer with deep relationships across housing companies and public projects. Comparable as a producer-install hybrid competing for the same multifamily and property-company customers.

Others

• Beijer Byggmaterial AB: Swedish building materials merchant serving professional contractors and DIY customers. Comparable as an enabling supplier/distributor within the same Swedish construction ecosystem where FSN operates.
• Optimera Svenska AB: Sweden's largest distributor of building materials and interior products, serving contractors and construction firms. Comparable as an ecosystem participant that supplies many of the same products FSN installs and influences the supplier landscape.

Direct peers

• Hemmafönster AB: Swedish window replacement specialist focused on residential properties. Comparable as a direct peer offering installation of multi-manufacturer window solutions to homeowners and housing associations, mirroring FSN's core model.
• Alnova Balkong & Fönster: Swedish contractor specializing in window, door, and balcony replacements for residential property owners. Comparable as a direct peer in the multifamily window-replacement trade with similar B2B and BRF customer targeting.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks7 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/f%C3%B6nsterspecialisten-norrland

Compliance3 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 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 FSN Nordfönster AB (tidigare FSN Fönsterspecialisten Norrland AB)