Arton

Arton was a 1955-built office property at Linnégatan 18 in Östermalm, Stockholm, a short walk from Stureplan and Humlegården. Genesta acquired it in 2020 and sold it to Folksam Group in January 2026.

Key Facts

Name: Arton
Country: Sweden
City: Stockholm
Address: Linnégatan 18, 114 60 Stockholm
Sector: Office
Fund: GNRE Fund III
Status: Realised
Acquisition: 2020
Divestment: 2026
Construction Year: 1955
Total Area: 7 306 m²
Parking: 45

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20220413 950 JLL Art8n office Lounge View WEB

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Investment Highlights

Location: Linnégatan 18 in Östermalm, steps from Stureplan and Humlegården and bordering Stockholm's CBD.
Scale: 7,306 m² across a 1955 building, with 45 parking spaces.
Acquired 2020: bought as Repslagaren 34 from Klara Norra Fastigheter AB on behalf of GNRE Fund III.
Repositioned: upgraded and rebranded as Arton, with new lobby, lounge and office interiors.
Tenant mix: a diversified mix of occupiers drawn by the central Östermalm location.
Divested 2026: sold to Folksam Group in January 2026.

Investment Story

Genesta acquired the property in March 2020 as Repslagaren 34, a 1955 office building on Linnégatan in Östermalm, from Klara Norra Fastigheter AB. Over the following years it was upgraded and repositioned under a new identity as Arton, with reworked lobby, lounge and office interiors aimed at occupiers wanting first-class facilities in a central Stockholm address.

The pitch during ownership was straightforward: a building for companies with important guests, regular meetings and a working schedule that demanded focus — with Stureplan and Humlegården on the doorstep. Genesta sold the property to Folksam Group in January 2026 on behalf of GNRE Fund III.

Investment Rationale

The investment case rested on location. Linnégatan 18 borders Stockholm's CBD, moments from Stureplan and Humlegården, in a submarket where supply is tightly constrained and tenant demand is consistently deep. At acquisition Genesta pointed to precisely that combination — a strong location bordering the CBD paired with a diversified tenant mix.

The asset was bought in March 2020 as the second acquisition for GNRE Fund III in quick succession, following Filmstaden 23 earlier the same year, as the fund built out its Nordic portfolio. Genesta held it for close to six years, executing the repositioning and rebranding before selling to Folksam Group in January 2026 — a full value-add cycle from acquisition through improvement to exit.

Our Insight

Property Updates

The latest news, transactions and announcements related to this property.

Divestments 22/01/26

Genesta Sells Office Property in Central Stockholm

Genesta sells the office property Art8n, also known as Repslagaren 34, on behalf of its fund GNRE Fund III. The 6,100 square meter building is located at Linnégatan 18 in Östermalm, Stockholm, just steps from Stureplan and Humlegården. The buyer is Folksam Group.

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News 01/09/24

Art8n Achieves BREEAM In-Use Excellent

The office building Art8n in central Stockholm has achieved the esteemed BREEAM In-Use certification at the Excellent level. Earning this certification involved a series of strategic upgrades and initiatives, all aimed at optimizing the building's energy efficiency and supporting sustainable practices.

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