Risk grade updatedRisk gradeEvidence verified
17 Oct 2026 · BUSINESS.fi / Opterom LuottoluokitusAutomatic grade A2.Business profile
Insinööritoimisto Risto Castren Oy
Insinööritoimisto Risto Castren Oy's registered office is Lahti. It is a limited company. The company was established on 1974-07-12. It operates in the industry of engineering design and technical consultancy incidental to heating, plumbing and air-conditioning. In its latest retained statement for 2025-12-31, revenue was €120,000 and operating profit was €58,216.
Business ID 0148753-5ValidUnclaimed company profile
Trusted core data
Public company details from the trade register.
- Business ID
- 0148753-5
- Sector
- Engineering design and technical consultancy incidental to heating, plumbing and air-conditioning
- Municipality
- Lahti
- Company form
- Limited company
- Registration date
- 1974-07-12
- Business ID registration date
- 1978-03-15
- Business status
- Valid
- Profile ownership
- Unclaimed company profile
Contact and location summary
Visiting address: Kanukkakatu 6, 15320, Lahti
About Insinööritoimisto Risto Castren Oy
Financial position and key figures for the company.
Insinööritoimisto Risto Castren Oy's location municipality is Lahti. It is a limited company. The company was established on 1974-07-12. It operates in the industry of engineering design and technical consultancy incidental to heating, plumbing and air-conditioning. In its latest retained statement for 2025-12-31, revenue was €120,000 and operating profit was €58,216. The latest retained financial statement for 2025-12-31 shows revenue of €120,000 and profit for the financial year of €49,683. Based on the latest retained statement, revenue growth was +0.0%, operating margin was +48.5%, and equity ratio was +90.3%.
Financial highlights
Key figures from the latest financial period.
Latest financial period
2025-12-31
4
2
PRH/XBRL financial statement
Derived indicators
Revenue growth0.0%
Operating margin48.5%
Equity ratio90.3%
Balance-sheet contextLatest financial period
Cash and bank€199,254Previous: €300,051
Retained earnings€2,444,391Previous: €2,674,849
Equity€2,502,483Previous: €2,733,069
Liabilities€269,533Previous: €38,647
Current assets€2,029,542Previous: €2,129,241
Current liabilities€269,533Previous: €38,647
Revenue trend2 periods
€120,000
2024-12-31
€120,000
2025-12-31
Operating profit (loss) trend2 periods
€58,264
2024-12-31
€58,216
2025-12-31
Profit (loss) for the financial year trend2 periods
€49,811
2024-12-31
€49,683
2025-12-31
Assets trend2 periods
€2,771,716
2024-12-31
€2,772,017
2025-12-31
Financial ratios
Financial ratios based on financial statement data. Source: PRH/XBRL-tilinpäätös.
Equity ratioGood
100/100 · Declining
Current ratioPassable
25/100 · Declining
Operating profit marginGood
100/100 · Declining
Ratio history
| Ratio | 2024-12-31 | 2025-12-31 |
|---|---|---|
| Equity ratio | 98.6 % | 90.3 % |
| Current ratio | 7.76x | 0.74x |
| Operating profit margin | 48.5 % | 48.5 % |
Registry status and identifiers
Current registry information and identifiers based on YTJ data.
YTJ statusValid
Trade RegisterRegistered
Business ID0148753-5
VAT IDFI01487535
EU IDFIFPRO.0148753-5
MunicipalityLahti
Current registered entries
1974-07-12Registered in Patent and Registration Office (Trade Register)
1978-03-15Registered in Tax Administration (Tax Administration)
1978-04-01Registered 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)
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
A2
Very goodInsinööritoimisto Risto Castren Oy
Grade unchangedA2 · new analysis 2026-10-17
84/100
High
Strong financial evidenceFinancial data included
Several key financial indicators have weakened across comparable fiscal periods.
3 comparable periodsRevenueStable
ProfitabilityStable
Same size nationallyDescriptive comparison – does not change the model score.
486 peersSolvency86%
Better than 86% of peers
Profitability94%
Better than 94% of peers
Liquidity59%
Better than 59% of peers
Revenue growth49%
Close to the peer-group midpoint
MixedBased on observed PRH financial period end and registration dates. This descriptive evidence does not change the v0.14 score.
3 observed filings147 days after period end
143 days after period end
3 consecutive periods
Supporting factors
- Strong equity ratio
- Strong operating profitability
- Active registered status
Risk factors to note
- Weak current ratio
- Coordinated deterioration across 2 financial domains
Automatic assessment developmentChanges are derived from evidence differences between persisted automatic assessments.
5 assessmentsA2
2026-10-1784/100 · v0.15
A2 → A2A2
2026-09-16 06:1884/100 · v0.14
A3 → A2 · +13 points- Evidence strengthened: a PRH/XBRL financial statement was added to the assessment (2025-12-31).
- Assessment confidence: Medium → High.
- Evidence quality: Registry and statistical evidence → Strong financial evidence.
A3
2026-09-1471/100 · v0.14
A3 → A3A3
2026-09-1471/100 · v0.13
Oldest retained automatic assessment in this comparisonA2
2026-10-17
open-risk-grade-v0.15
The grade can use open digital financial statement data together with registry signals.
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 riskmedium
62/100
Industry context is medium based on normalized open statistical inputs.
Age and continuityVakiintunut
97/100
The company has about 52 years of registry continuity.
Registry and status signalsVakaa
83/100
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 A3 → A2.Risk grade updatedRisk gradeEvidence verified
14 Sept 2026 · BUSINESS.fi / Opterom LuottoluokitusAutomatic grade A3.Registry timeline
Trade register notifications shown on a timeline.
16 register eventsLatest event: 2026-05-27
Financial statements availability
Available financial statement periods and PRH source filings.
4 financial statement periodsLatest financial period: 2025-12-31
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
Insinööritoimisto Risto Castren Oy shows public core facts. A company representative can claim the profile, update public information, and access owner tools.