Risk grade updatedRisk gradeEvidence verified
18 Oct 2026 · BUSINESS.fi / Opterom LuottoluokitusAutomatic grade D.Business profile
Arkkitehtitoimisto Mämmi Oy
Arkkitehtitoimisto Mämmi Oy's registered office is Palojoki. It is a limited company. The company was established on 2025-01-19. It operates in the industry of interior design activities. In its latest retained statement for 2025-12-31, revenue was €34,501 and operating profit was -€4,448.
Business ID 3502537-1ValidUnclaimed company profile
Trusted core data
Public company details from the trade register.
- Business ID
- 3502537-1
- Sector
- Interior design activities
- Municipality
- Palojoki
- Company form
- Limited company
- Registration date
- 2025-01-19
- Business ID registration date
- 2025-01-13
- Business status
- Valid
- Profile ownership
- Unclaimed company profile
Contact and location summary
Visiting address: Arolantie 10a, 01940, Palojoki
Website: https://mammiarkkitehdit.fiSource observation
People and decision-makers
Itoh MayumiToimitusjohtaja
About Arkkitehtitoimisto Mämmi Oy
Financial position and key figures for the company.
Arkkitehtitoimisto Mämmi Oy's location municipality is Palojoki. It is a limited company. The company was established on 2025-01-19. It operates in the industry of interior design activities. In its latest retained statement for 2025-12-31, revenue was €34,501 and operating profit was -€4,448. The latest retained financial statement for 2025-12-31 shows revenue of €34,501 and profit for the financial year of -€4,487. Based on the latest retained statement, revenue growth was not currently available, operating margin was -12.9%, and equity ratio was -134.9%.
Auxiliary business names
Public alternate names materialized from source observations.
Mämmi Architects Ltd
Financial highlights
Key figures from the latest financial period.
Latest financial period
2025-12-31
0
0
Enriched source observation
Derived indicators
Operating margin-12.9%
Equity ratio-134.9%
Revenue€34,501Previous comparison not availablePrevious: No comparison value
Operating profit (loss)-€4,448Previous comparison not availablePrevious: No comparison value
Profit (loss) for the financial year-€4,487Previous comparison not availablePrevious: No comparison value
Assets€3,326Previous comparison not availablePrevious: No comparison value
Balance-sheet contextLatest financial period
Profit before taxes-€4,487Previous: No comparison value
Employees0Previous: No comparison value
Financial ratios
Financial ratios based on financial statement data. Source: Rikastettu lähdehavainto.
Equity ratioWeak
0/100 · Trend unavailable
Current ratioNot assessable
0/100 · Trend unavailable
Operating profit marginWeak
18/100 · Trend unavailable
Registry status and identifiers
Current registry information and identifiers based on YTJ data.
YTJ statusValid
Trade RegisterRegistered
Business ID3502537-1
VAT IDFI35025371
EU IDFIFPRO.3502537-1
MunicipalityPalojoki
Current registered entries
2025-01-13VAT-liable for business activity in Tax Administration (VAT Register)
2025-01-13Registered in Tax Administration (Prepayment Register)
2025-01-19Registered in Patent and Registration Office (Trade Register)
2025-01-20Registered in Tax Administration (Tax Administration)
Responsible people
Public role relationships materialized from source observations.
Itoh MayumiToimitusjohtajaSources: 4 · Confidence: 78%
Lounela Kalle EliasVarajäsenSources: 2 · Confidence: 78%
Itoh MayumiVarsinainen jäsenSources: 1 · Confidence: 72%
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 riskArkkitehtitoimisto Mämmi Oy
Grade unchangedD · new analysis 2026-10-18
26/100
Medium
Usable financial evidenceFinancial data included
Same industry and sizeDescriptive comparison – does not change the model score.
93 peersSolvency6%
Below 94% of peers
Profitability40%
Below 60% of peers
Supporting factors
- Active registered status
- A newer financial statement filing has been reported
- Lower industry distress context
Risk factors to note
- Negative equity
- Negative profitability or net result
- Severe registry event 6–12 months ago
Automatic assessment developmentChanges are derived from evidence differences between persisted automatic assessments.
2 assessmentsD
2026-10-1826/100 · v0.15
D → D- Risk factor cleared: High balance-sheet leverage.
D
2026-10-0126/100 · v0.14
Oldest retained automatic assessment in this comparisonD
2026-10-18
open-risk-grade-v0.15
The grade can use open digital financial statement data together with registry signals.
A serious registry signal affects this grade. Review the profile registry and notification details 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 risklow
82/100
Industry context is low based on normalized open statistical inputs.
Age and continuityNuori
10/100
The company has about 1 years of registry continuity.
Registry and status signalsSeurattava
45/100
A severity-mapped registry signal 6–12 months ago remains relevant with reduced component weight.
Events & news
Verified events and sourced external company news in one timeline.
Risk grade updatedRisk gradeEvidence verified
1 Oct 2026 · BUSINESS.fi / Opterom LuottoluokitusAutomatic grade D.Registry timeline
Trade register notifications shown on a timeline.
4 register eventsLatest event: 2026-03-28
Profile source and ownership
Profile based on public registry data
BUSINESS.fi has created this profile from public company information. Source data updated 2026-03-28.
This company profile has not been claimed yet
Arkkitehtitoimisto Mämmi Oy shows public core facts. A company representative can claim the profile, update public information, and access owner tools.