STANDARD RØR AS

Signals

2 flags

• ▼ Negativ egenkapital 2025 Bokført egenkapital er negativ (−323k kr).
• ▼ Driftsunderskudd 2025 Siste driftsresultat er negativt (−242k kr).

STANDARD RØR AS is registered as a limited company in Oslo, Oslo with organisation number 925433004. The business is classified under plumbing installation (NACE 43.221). The company was incorporated in 2020. Registered share capital is NOK 30,000, divided into 1000 shares. The company's stated purpose is: “Rørlegger VVS. Rørlegger - og ventilasjonsarbeid.”. The most recent filed accounts, for the 2025 financial year, show NOK 4.3m in revenue and NOK −242,000 in operating profit.

Key figures · 2025

Revenue

NOK 4.3m

▲ +17 %

Operating profit

NOK −242,000

▼ −253 %

Equity

NOK −323,000

▼ −1309 %

Financial health · 2025

Liquidity

0.69

Weak

Current assets ÷ current liabilities

Profitability

-35.5%

Not satisfactory

Return on total assets

Solidity

-81.4%

Weak

Equity as a share of total capital

Solidity capped at Weak because equity is below NOK 100,000.

Who owns STANDARD RØR AS?

Izabela Castor Private shareholder

50.0%

Karl-Heinz Siegfried Castor Private shareholder

50.0%

STANDARD RØR AS

NOK 4.3m rev. · NOK −242,000 profit

STANDARD RØR AS has 2 registered shareholders:

• Izabela Castor 50.0%
• Karl-Heinz Siegfried Castor 50.0%

All shareholders and roles →

Frequently asked questions about STANDARD RØR AS

Who owns STANDARD RØR AS?

Izabela Castor is the largest registered owner, with 50.0%.

What is the revenue of STANDARD RØR AS?

STANDARD RØR AS had revenue of NOK 4.3m in 2025.

Who is the general manager of STANDARD RØR AS?

Karl-Heinz Siegfried Castor is registered as general manager of STANDARD RØR AS.

Where is STANDARD RØR AS based?

STANDARD RØR AS has its business address in Oslo.

Source: Biztrac.no · Data from the Brønnøysund Register Centre and the Norwegian Tax Administration · Last updated 03.10.2026.