Risk grade updatedRisk gradeEvidence verified
19 Oct 2026 · BUSINESS.fi / Opterom LuottoluokitusAutomatic grade D.Business profile
Maanrakennus Martti Rantanen Oy
Maanrakennus Martti Rantanen Oy's registered office is Lahti. It is a limited company. The company was established on 1987-07-29. It operates in the industry of site preparation. In its latest retained statement for 2026-04-30, revenue was €280,904 and operating profit was -€23,700.
Business ID 0662689-9ValidUnclaimed company profile
Trusted core data
Public company details from the trade register.
- Business ID
- 0662689-9
- Sector
- Site preparation
- Municipality
- Lahti
- Company form
- Limited company
- Registration date
- 1987-07-29
- Business ID registration date
- 1987-06-23
- Business status
- Valid
- Profile ownership
- Unclaimed company profile
Contact and location summary
Visiting address: Kanukkakatu 11, 15320, Lahti
Phone: +358409010991Source observation
Email: [email protected]Source observation
Website: https://maanrakennusrantanen.fiSource observation
People and decision-makers
Rantanen Marko TapioToimitusjohtaja
About Maanrakennus Martti Rantanen Oy
Financial position and key figures for the company.
Maanrakennus Martti Rantanen Oy's location municipality is Lahti. It is a limited company. The company was established on 1987-07-29. It operates in the industry of site preparation. In its latest retained statement for 2026-04-30, revenue was €280,904 and operating profit was -€23,700. The latest retained financial statement for 2026-04-30 shows revenue of €280,904 and profit for the financial year of -€34,352. Based on the latest retained statement, revenue growth was -32.4%, operating margin was -8.4%, and equity ratio was -8.7%.
Financial highlights
Key figures from the latest financial period.
Latest financial period
2026-04-30
0
0
Enriched source observation
Derived indicators
Revenue growth-32.4%
Operating margin-8.4%
Equity ratio-8.7%
Revenue€280,904-€134,758 (-32.4%) vs previous periodPrevious: €415,662
Operating profit (loss)-€23,700+€41,575 (+63.7%) vs previous periodPrevious: -€65,275
Profit (loss) for the financial year-€34,352+€40,470 (+54.1%) vs previous periodPrevious: -€74,822
Assets€352,831-€34,725 (-9.0%) vs previous periodPrevious: €387,557
Balance-sheet contextLatest financial period
Profit before taxes-€34,352Previous: -€74,822
Employees3Previous: 4
Revenue trend5 periods
€495,406
2022-04-30
€631,727
2023-04-30
€387,963
2024-04-30
€415,662
2025-04-30
€280,904
2026-04-30
Operating profit (loss) trend5 periods
€53,890
2022-04-30
€68,365
2023-04-30
€20,182
2024-04-30
-€65,275
2025-04-30
-€23,700
2026-04-30
Profit (loss) for the financial year trend5 periods
€48,234
2022-04-30
€60,206
2023-04-30
€9,127
2024-04-30
-€74,822
2025-04-30
-€34,352
2026-04-30
Assets trend5 periods
€433,816
2022-04-30
€426,221
2023-04-30
€415,299
2024-04-30
€387,557
2025-04-30
€352,831
2026-04-30
Financial ratios
Financial ratios based on financial statement data. Source: Rikastettu lähdehavainto.
Equity ratioWeak
0/100 · Declining
Current ratioNot assessable
0/100 · Trend unavailable
Operating profit marginWeak
29/100 · Improving
Ratio history
| Ratio | 2022-04-30 | 2023-04-30 | 2024-04-30 | 2025-04-30 | 2026-04-30 |
|---|---|---|---|---|---|
| Equity ratio | 5.2 % | 19.4 % | 20.5 % | 0.9 % | -8.7 % |
| Current ratio | - | - | - | - | - |
| Operating profit margin | 10.4 % | 10.8 % | 5.1 % | -15.5 % | -8.4 % |
Registry status and identifiers
Current registry information and identifiers based on YTJ data.
YTJ statusValid
Trade RegisterRegistered
Business ID0662689-9
VAT IDFI06626899
EU IDFIFPRO.0662689-9
MunicipalityLahti
Current registered entries
1987-06-01Registered in Tax Administration (Employer Register)
1987-06-23Registered in Tax Administration (Tax Administration)
1987-07-29Registered in Patent and Registration Office (Trade 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.
Rantanen Marko TapioToimitusjohtajaSources: 5 · Confidence: 78%
Rantanen Marko TapioVarsinainen jäsenSources: 2 · Confidence: 78%
Harjula Anne-Mari KatariinaTilintarkastajaSources: 2 · Confidence: 78%
Rantanen Heidi 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
D
High riskMaanrakennus Martti Rantanen Oy
Grade unchangedD · new analysis 2026-10-19
16/100
Medium
Usable financial evidenceFinancial data included
Several key financial indicators have weakened across comparable fiscal periods.
4 comparable periodsProfitabilityVolatile
LiquidityNot enough history
Same industry, size and age groupDescriptive comparison – does not change the model score.
283 peersSolvency7%
Below 93% of peers
Profitability10%
Below 90% of peers
Revenue growth10%
Below 90% of peers
Supporting factors
- Active registered status
- A newer financial statement filing has been reported
- Long registry continuity
Risk factors to note
- Negative equity
- Negative profitability or net result
- Losses in the latest and previous available periods
Automatic assessment developmentChanges are derived from evidence differences between persisted automatic assessments.
2 assessmentsD
2026-10-1916/100 · v0.15
D → D- Risk factor cleared: High balance-sheet leverage.
D
2026-09-1616/100 · v0.14
Oldest retained automatic assessment in this comparisonD
2026-10-19
open-risk-grade-v0.15
The grade can use open digital financial statement data together with registry signals.
A serious financial risk signal affects this grade. Review the profile financial indicators as well.
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 riskelevated
46/100
Industry context is elevated based on normalized open statistical inputs.
Age and continuityVakiintunut
90/100
The company has about 39 years of registry continuity.
Registry and status signalsVakaa
85/100
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
16 Sept 2026 · BUSINESS.fi / Opterom LuottoluokitusAutomatic grade D.Registry timeline
Trade register notifications shown on a timeline.
23 register eventsLatest event: 2026-07-18
Profile source and ownership
Profile based on public registry data
BUSINESS.fi has created this profile from public company information. Source data updated 2026-03-03.
This company profile has not been claimed yet
Maanrakennus Martti Rantanen Oy shows public core facts. A company representative can claim the profile, update public information, and access owner tools.