Kungsleden

What Kungsleden does

Castellum, which absorbed Kungsleden, is one of the largest listed commercial property companies in the Nordic region, owning, managing, and developing office, logistics, retail, and public-sector properties in growth cities across Sweden, Denmark, and Finland, with additional Norwegian exposure through its ~34% stake in Entra ASA. As of March 2026 the portfolio comprised 669 properties, 5.3 million square metres of lettable area, and a property value of SEK 138 billion, with 7,400 commercial leases and 450 residential contracts in place. Castellum is listed on Nasdaq Stockholm Large Cap under the ticker CAST and has roughly 99,000 shareholders, a Moody's Baa2 rating, and a Nordic capital base supporting a SEK 138 Bn asset base.

The company operates three integrated service lines: Property Management, providing decentralised customer-centric management organised around six geographic regions (Stockholm, West/Gothenburg, Central, Mälardalen, Öresund, and Finland); Project Development, covering continual investment in existing assets and new developments such as Hagastaden in Stockholm and GreenHaus in Helsingborg (50+ ongoing projects); and Transactions, which manages portfolio rotation via acquisitions and divestments, including the June 2026 SEK 5.0 Bn Stockholm office sale to Alecta Fastigheter. Core technology is a physical and sustainability infrastructure platform rather than software: 130 solar PV systems (23 MW), 1,627 EV charging stations, 1,282 green leases, and certifications including Miljöbyggnad (Gold offices, Silver logistics), NollCO2, WELL Portfolio (covering nearly 18,000 tenant employees), DJSI membership, and Nasdaq Green Equity Designation.

Revenue is generated primarily through recurring rental income on long-term commercial leases billed monthly, with Q1 2026 income of SEK 2,321M and income from property management of SEK 1,079M (annualised roughly SEK 9.3 Bn). Customer segments are split between private commercial enterprises (office, logistics, retail) and public-sector tenants, served via country-specific websites (castellum.se, .dk, .fi), direct regional sales teams, and an investor-relations-driven B2B marketing approach. Castellum is led by CEO Pål Ahlsén and CFO Christoffer Strömbäck, with Filip Elland as Chief Sustainability Officer, and is pursuing a net-zero greenhouse gas target by 2040, having already reduced Scope 1 and 2 emissions by 83% since 2007.

Name

Kungsleden

Legal name

Castellum Aktiebolag

Website

https://kungsleden.se

Company type

Public

Founded year

1997

Operating status

Operating

Headcount range

51–100 employees

Short description

Castellum (formerly Kungsleden) is a Nasdaq Stockholm Large Cap commercial property company owning, managing, and developing 669 office, logistics, retail, and public-sector properties across Sweden, Denmark, Finland, and Norway, serving roughly 7,850 leases.

Ownership category

akta.pro rank

Product category

Commercial Real Estate

NAICS

Lessors of Nonresidential Buildings (except Miniwarehouses) (53112), Nonresidential Property Managers (531312)

SIC

Real Estate Operators (No Developers) & Lessors (6510), Operators Of Nonresidential Buildings (6512), Lessors Of Real Property, Nec (6519)

akta.pro primary industry

Mixed-Use Property Management (BPAJAGAE)

Keywords

• Commercial property management
• Nordic real estate
• Office leasing
• Logistics properties
• Sustainable buildings

Headquarters

HQ city

Stockholm

HQ country

Sweden

HQ region

Europe

Offices4 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Infrastructure, Operations, Personnel, Others

Revenue model

1. Property Management: Core revenue from managing commercial properties including office, logistics, industry/warehouse, retail, and public sector properties. Income from property management for Q1 2026 was SEK 1,079M
2. Project Development: Continual investment in existing portfolios and new development creating quality shift to more sustainable portfolio with increased earning power
3. Property Transactions: Portfolio development through acquisitions and divestments to strengthen position in attractive Nordic growth regions

Pricing tiers

Go-to-market motion2 records

Distribution channels2 records

Marketing channels4 records

Core offering

Kungsleden owns, manages, and develops commercial real estate properties — including office, logistics/warehouse, retail, and public-sector buildings — primarily across Nordic growth regions. The company generates revenue through rental income, property management services, project development, and real estate transactions. Following its merger with Castellum, Kungsleden continues to operate as part of a major Nordic commercial property platform.

Product overview

Castellum (formerly Kungsleden) is a Swedish property company offering integrated commercial property services across Sweden, Denmark, and Finland. The company operates three core service areas: Property Management (customer-centric management enabling tenants to achieve business goals), Project Development (investing in and developing new portfolios for sustainable growth), and Transactions (portfolio development to strengthen market position). Through its associated company Entra ASA, Castellum also has exposure to the Norwegian market, particularly central Oslo. The property portfolio includes office, logistics/warehouse, retail, and public sector properties across six geographic regions: Stockholm, West, Central, Mälardalen, Öresund, and Finland. As of March 2026, the portfolio comprises 669 properties with a total lettable area of 5.3 million square metres and a property value of SEK 138 billion.

Differentiator

Problem solved

Functional benefit

Products and services

• Office Properties Leasing and management of office buildings for commercial tenants in Nordic growth regions.
• Logistics and Industry Properties Warehouse, logistics, and industrial property leasing for supply-chain and industrial tenants across the Nordics.
• Retail Properties Retail-property leasing and management for retail tenants and consumer-facing businesses in Nordic growth markets.
• Public Sector Properties Leasing of purpose-built and adapted premises to government, municipal, and other public-sector tenants.
• Property Management Services
• Project Development Development of new commercial properties and redevelopment/upgrade of existing assets, including sustainability-focused retrofits.
• Urban Development
• Property Transactions

Quantifiable outcome

• 83% reduction in Scope 1 and Scope 2 carbon emissions since 2007
• +5 more outcomes

Named customers2 records

Segments3 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Eight partnerships are on record, tiered core and minor.

• Entra ASAcoreStrategic or Co-development PartnerAssociated company through which Castellum owns one third of Entra's property portfolio of high-quality commercial properties primarily in central Oslo, Norway. This provides exposure to strong growth areas in Norway.
• EPRA Sustainability CommitteecoreStrategic or Co-development PartnerMembership in European Public Real Estate Association sustainability committee for industry collaboration on sustainability standards
• CDPcoreStrategic or Co-development PartnerMembership in CDP (Carbon Disclosure Project) for climate reporting and transparency
• UN Global CompactcoreStrategic or Co-development PartnerSignatory to UN Global Compact principles covering human rights, labor, environment, and anti-corruption
• BELOKminorStrategic or Co-development PartnerEnergimyndighetens Beställargrupp för Lokaler - collaboration on energy efficiency in buildings with Swedish Energy Agency
• CMB ChalmersminorStrategic or Co-development PartnerResearch collaboration with Chalmers University of Technology on sustainable construction and property development
• Kista LimitlessminorGTM or Marketing PartnerUrban collaboration contributing SEK 4,000,000 in 2025 to sustainable urban development in Kista area
• FastighetsägarnaminorGTM or Marketing PartnerMembership contribution of SEK 144,000 to property industry association for sustainable real estate industry development

Scale indicators17 records

Recent moves6 records

Expansion highlights5 records

Market position

Competitive moat4 records

Key risks5 records

Key highlights6 records

Customer concentration

• YouTubeyoutube.com/user/CastellumAB
• Facebookfacebook.com/CastellumAB
• LinkedInlinkedin.com/company/kungsleden
• Instagraminstagram.com/castellum_ab
• Xx.com/kungsleden

Compliance8 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles4 records

Subsidiaries2 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 Kungsleden