Business profile

Rakennustyöt K. Rönkkö Oy

Rakennustyöt K. Rönkkö Oy's registered office is Jännevirta. It is a limited company. The company was established on 2005-06-14. It operates in the industry of construction of residential and non-residential buildings. In its latest retained statement for 2026-03-31, revenue was €498,055 and operating profit was €12,558.

Claim profileContact details
Business ID 1967275-5ValidUnclaimed company profile

Trusted core data

Public company details from the trade register.

Business ID
1967275-5
Sector
Construction of residential and non-residential buildings
Municipality
Jännevirta
Company form
Limited company
Registration date
2005-06-14
Business ID registration date
2005-05-25
Business status
Valid
Profile ownership
Unclaimed company profile

Contact and location summary

Visiting address: Puitinlahdentie 69, 70940, Jännevirta

Phone: +358407659031Source observation

Email: [email protected]Source observation

Website: https://www.rakennustyotkronkko.fiSource observation

People and decision-makers

Rönkkö Kari Ilkka TapaniToimitusjohtaja

About Rakennustyöt K. Rönkkö Oy

Financial position and key figures for the company.

Rakennustyöt K. Rönkkö Oy's location municipality is Jännevirta. It is a limited company. The company was established on 2005-06-14. It operates in the industry of construction of residential and non-residential buildings. In its latest retained statement for 2026-03-31, revenue was €498,055 and operating profit was €12,558. The latest retained financial statement for 2026-03-31 shows revenue of €498,055 and profit for the financial year of €9,274. Based on the latest retained statement, revenue growth was -2.1%, operating margin was +2.4%, and equity ratio was not currently available.

Extended business activity

A longer directory- or registry-backed activity description that complements the short registry industry label.

Yhtiön toimiala on saneerausrakentamispalvelut, uusien kiinteistöjen ja asunto- ym. huoneistojen rakentaminen sekä alaan liittyvä tarvikekauppa. Yhtiö voi omistaa osakkeita, kiinteistöjä ja arvopapereita, sekä käydä kauppaa niillä.

Financial highlights

Key figures from the latest financial period.

Latest financial period

2026-03-31

Imported periods0
PRH parsed0
Profile sourceEnriched source observation
Derived indicators
Revenue growth-2.1%
Operating margin2.4%
Revenue€498,055-€10,661 (-2.1%) vs previous periodPrevious: €508,716
Operating profit (loss)€12,558-€15,562 (-55.3%) vs previous periodPrevious: €28,120
Profit (loss) for the financial year€9,274-€14,472 (-60.9%) vs previous periodPrevious: €23,746
Balance-sheet contextLatest financial period
Employees3Previous: No comparison value
Revenue trend5 periods
€399,077
2022-03-31
€1,679,642
2023-03-31
€506,705
2024-03-31
€508,716
2025-03-31
€498,055
2026-03-31
Operating profit (loss) trend5 periods
-€18,618
2022-03-31
-€14,215
2023-03-31
€17,597
2024-03-31
€28,120
2025-03-31
€12,558
2026-03-31
Profit (loss) for the financial year trend5 periods
-€29,466
2022-03-31
-€26,985
2023-03-31
€14,530
2024-03-31
€23,746
2025-03-31
€9,274
2026-03-31
Assets trend3 periods
€1,081,572
2022-03-31
€92,813
2023-03-31
€134,723
2024-03-31

Financial ratios

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

Equity ratioNot assessable
0/100 · Trend unavailable
Not available2024-03-31: 22.6 %
Current ratioNot assessable
0/100 · Trend unavailable
Not available2025-03-31: Ei saatavilla
Operating profit marginPassable
56/100 · Declining
2.4 %2025-03-31: 5.5 %
Ratio history
Ratio2022-03-312023-03-312024-03-312025-03-312026-03-31
Equity ratio5.9 %22.7 %22.6 %--
Current ratio-----
Operating profit margin-4.7 %-0.8 %3.5 %5.5 %2.4 %

Registry status and identifiers

Current registry information and identifiers based on YTJ data.

YTJ statusValid
Trade RegisterRegistered
Business ID1967275-5
VAT IDFI19672755
EU IDFIFPRO.1967275-5
MunicipalityJännevirta
Current registered entries
2005-06-14Registered in Tax Administration (Employer Register)
2005-06-14VAT-liable for business activity in Tax Administration (VAT Register)
2005-06-14Registered in Tax Administration (Prepayment Register)
2005-06-14Registered in Tax Administration (Tax Administration)
2005-06-14Registered in Patent and Registration Office (Trade Register)

Responsible people

Public role relationships materialized from source observations.

Rönkkö Kari Ilkka TapaniToimitusjohtajaSources: 6 · Confidence: 78%
Rönkkö Kari Ilkka TapaniVarsinainen jäsenSources: 3 · Confidence: 78%
Natunen Helge JuhaniTilintarkastajaSources: 2 · Confidence: 78%
Kinnunen Minna-JohannaVarajäsenSources: 2 · Confidence: 78%

Risk certificate

An open-data based company stability and risk signal.

BUSINESS.fi

BUSINESS.fi Luottoluokitus

Profile-specific risk signal based on open data

Automatic gradeNot a credit decision
B1
StableRakennustyöt K. Rönkkö Oy
Grade unchangedB1 · new analysis 2026-10-19
Model score60/100
Assessment confidenceMedium
Evidence qualityLimited financial evidenceRegistry and statistics based
Financial trajectoryFinancial development is mostly stable or mixed.
4 comparable periods
RevenueStable
ProfitabilityDeteriorating
SolvencyNot enough history
LiquidityNot enough history
Supporting factors
  • Active registered status
  • A newer financial statement filing has been reported
  • Long registry continuity
Risk factors to note
  • Elevated industry distress context
  • Sufficient structured financial metrics are not available
Rating historyAutomatic assessment developmentChanges are derived from evidence differences between persisted automatic assessments.
2 assessments
B1
2026-10-1960/100 · v0.15
B1 → B1
B1
2026-09-2360/100 · v0.14
Oldest retained automatic assessment in this comparison
Automatic model gradeB1
Automatic model snapshot2026-10-19
Automatic model versionopen-risk-grade-v0.15
Registry and statistics based

The grade uses registry, industry, and regional signals because sufficient source-backed financial metrics are not available for a Tier 1 assessment.

Verify assessment

Risk context

When sufficient source-backed financial metrics are not available for a Tier 1 assessment, BUSINESS.fi shows registry, industry, and regional context.

Industry riskhigh
25/100

Industry context is high based on normalized open statistical inputs.

Age and continuityVakiintunut
80/100

The company has about 21 years of registry continuity.

Registry and status signalsVakaa
86/100

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

Events & news

Verified events and sourced external company news in one timeline.

Risk grade updatedRisk gradeEvidence verified
19 Oct 2026 · BUSINESS.fi / Opterom LuottoluokitusAutomatic grade B1.
Risk grade updatedRisk gradeEvidence verified
23 Sept 2026 · BUSINESS.fi / Opterom LuottoluokitusAutomatic grade B1.

Registry timeline

Trade register notifications shown on a timeline.

16 register eventsLatest event: 2026-08-08

Profile source and ownership

Profile based on public registry data
BUSINESS.fi has created this profile from public company information. Source data updated 2026-02-03.

This company profile has not been claimed yet

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