Business profile

Arkkitehdit Osara Oy

Arkkitehdit Osara Oy's registered office is Helsingfors. It is a limited company. The company was established on 1983-05-19. It operates in the industry of architectural activities. In its latest retained statement for 2025-12-31, revenue was €625,771 and operating profit was €24,029.

Claim profileContact details
Business ID 0534451-5ValidUnclaimed company profile

Trusted core data

Public company details from the trade register.

Business ID
0534451-5
Sector
Architectural activities
Municipality
Helsingfors
Company form
Limited company
Registration date
1983-05-19
Business ID registration date
1983-12-19
Business status
Valid
Profile ownership
Unclaimed company profile
Data source
Public registry data

Contact and location summary

Visiting address: Huvilakatu 4 A 1, 00150, Helsingfors

Phone: +35896877420Source observation

Website: https://www.osara-ark.fiSource observation

People and decision-makers

Havumäki Tiina KatriinaToimitusjohtaja

Email: Email available for logged-in usersSource: company website

Phone: Phone available for logged-in usersSource: company website

Elina SaarisaloDecision-maker

Email: Email available for logged-in usersSource: company website

Phone: Phone available for logged-in usersSource: company website

Erkki PirttiläRakennusinsinööri

Email: Email available for logged-in usersSource: company website

Phone: Phone available for logged-in usersSource: company website

Direct contact details available for logged-in usersSome person-level contact details are shown only to registered users. The data is based on public sources, such as the company's own website.Log in to view decision-maker contact details

About Arkkitehdit Osara Oy

Financial position and key figures for the company.

Arkkitehdit Osara Oy's location municipality is Helsingfors. It is a limited company. The company was established on 1983-05-19. It operates in the industry of architectural activities. In its latest retained statement for 2025-12-31, revenue was €625,771 and operating profit was €24,029. The latest retained financial statement for 2025-12-31 shows revenue of €625,771 and profit for the financial year of €19,280. Based on the latest retained statement, revenue growth was +19.2%, operating margin was +3.8%, and equity ratio was +75.6%.

Auxiliary business names

Public alternate names materialized from source observations.

Perusparannussuunnittelu Osara

Financial highlights

Key figures from the latest financial period.

Latest financial period

2025-12-31

Imported periods0
PRH parsed0
Profile sourceEnriched source observation
Derived indicators
Revenue growth19.2%
Operating margin3.8%
Equity ratio75.6%
Balance-sheet contextLatest retained period snapshot
Employees3Previous: No comparison value
Revenue trend5 periods
€290,052
2021-12-31
€344,108
2022-12-31
€312,074
2023-12-31
€525,014
2024-12-31
€625,771
2025-12-31
Operating profit (loss) trend5 periods
€19,272
2021-12-31
€29,383
2022-12-31
€24,307
2023-12-31
-€45,531
2024-12-31
€24,029
2025-12-31
Profit (loss) for the financial year trend5 periods
€16,451
2021-12-31
€20,453
2022-12-31
€19,500
2023-12-31
-€45,194
2024-12-31
€19,280
2025-12-31
Assets trend5 periods
€121,858
2021-12-31
€138,350
2022-12-31
€140,539
2023-12-31
€73,471
2024-12-31
€113,778
2025-12-31

Financial ratios

Financial ratios based on financial statement data. Source: Rikastettu lähdehavainto.

Equity ratioGood
95/100 · Declining
75.6 %2024-12-31: 90.9 %
Current ratioNot assessable
0/100 · Trend unavailable
Not available2024-12-31: Ei saatavilla
Operating profit marginSatisfactory
60/100 · Improving
3.8 %2024-12-31: -8.7 %
Ratio history
Ratio2021-12-312022-12-312023-12-312024-12-312025-12-31
Equity ratio63.2 %66.8 %79.7 %90.9 %75.6 %
Current ratio-----
Operating profit margin6.6 %8.5 %7.8 %-8.7 %3.8 %

Registry status and identifiers

Verified registry memberships and identifiers from the latest retained YTJ snapshot.

YTJ statusValid
Trade RegisterRegistered
Business ID0534451-5
VAT IDFI05344515
EU IDFIFPRO.0534451-5
MunicipalityHelsingfors
Current registered entries
1983-05-19Registered in Patent and Registration Office (Trade Register)
1983-12-19Registered in Tax Administration (Tax Administration)
1990-05-01Registered in Tax Administration (Employer Register)
1994-06-01VAT-liable for business activity in Tax Administration (VAT Register)
1995-03-01Registered in Tax Administration (Prepayment Register)

Responsible people

Public role relationships materialized from source observations.

Direct contact details available for logged-in users.

Havumäki Tiina KatriinaToimitusjohtajaSources: 6 · Confidence: 78%
Pirttilä Erkki OlaviPuheenjohtajaSources: 4 · Confidence: 78%
Havumäki Reino KustaaVarsinainen jäsenSources: 4 · Confidence: 78%
Havumäki Tiina KatriinaVarsinainen jäsenSources: 2 · Confidence: 78%
Kotiranta Kare IlariTilintarkastajaSources: 2 · Confidence: 78%
Erkki PirttiläRakennusinsinööriSources: 1 · Confidence: 76%

Risk certificate

An open-data based company stability and risk signal.

BUSINESS.fi

BUSINESS.fi Luottoluokitus

Profile-specific risk signal based on open data

Financial data includedNot a credit decision
A2
Very goodArkkitehdit Osara Oy
Updated2026-08-26
ConfidenceMedium
Score81/100

The grade can use open digital financial statement data together with registry signals.

Risk context

When open digital financial statements are unavailable, BUSINESS.fi shows registry, industry, and regional context.

Industry riskmedium
62/100

Industry context is medium based on normalized open statistical inputs.

Age and continuityVakiintunut
90/100

The company has about 43 years of registry continuity.

Registry and status signalsVakaa
81/100

Registry history, filing recency, and active register markings are still limited or mixed.

Registry timeline

Trade register notifications shown on a timeline.

26 register eventsLatest event: 2025-05-17

Profile source and ownership

Profile based on public registry data
BUSINESS.fi has created this profile from public company information. Source data updated 2025-12-31.

This company profile has not been claimed yet

Arkkitehdit Osara Oy shows public core facts. A company representative can claim the profile, update public information, and access owner tools.