Insinööritoimisto Matti Hallasaari Oy
Insinööritoimisto Matti Hallasaari Oy is a Finnish limited company (Oy), listed in the Finnish Trade Register since 17.11.1983. Primary activity is engineering design and technical consultancy incidental to heating, plumbing and air-conditioning (TOL 71124). The company is located in Helsinki.
Overview
About the company
Insinööritoimisto Matti Hallasaari Oy is a Finnish limited company (Oy), listed in the Finnish Trade Register since 17.11.1983. Primary activity is engineering design and technical consultancy incidental to heating, plumbing and air-conditioning (TOL 71124). The company is located in Helsinki.
Basic data
- Business name
- Insinööritoimisto Matti Hallasaari Oy
- Registry code
- 0550682-8
- Legal form
- Limited company (Oy)
- Status
- Active
- First registration
- 17.11.1983
- Address
- Kumpulantie, 00520, Helsinki
- Primary activity (TOL)
- 71124 – Engineering design and technical consultancy incidental to heating, plumbing and air-conditioning
- Website
- https://www.hallasaari.com
Financials
Revenue trend
Annual reports
| 2021 | 2022 | 2023 | 2024 | 2025 | |
|---|---|---|---|---|---|
| Revenue | 1,7 M€ | 1,7 M€ | 1,8 M€ | 1,8 M€ | 2,0 M€ |
| Operating profit | 510 k€ | 594 k€ | 667 k€ | 651 k€ | 724 k€ |
| Op. margin | 30.6 % | 35.0 % | 38.0 % | 35.8 % | 36.6 % |
| Growth | +12.2 % | +1.6 % | +3.7 % | +3.3 % | +9.0 % |
| Equity ratio | 90.0 % | 90.0 % | 90.0 % | 90.0 % | 90.0 % |
| Employees | – | 12 | 10 | – | 10 |
| Balance sheet | 2,6 M€ | 2,4 M€ | 2,5 M€ | 2,5 M€ | 2,7 M€ |
Tax data 2020–2024
| 2020 | 2021 | 2022 | 2023 | 2024 | |
|---|---|---|---|---|---|
| Taxable income | 452 k€ | 511 k€ | 587 k€ | 667 k€ | 598 k€ |
| Tax assessed | 92 k€ | 104 k€ | 119 k€ | 136 k€ | 122 k€ |
| Effective tax rate | 20.34 % | 20.34 % | 20.34 % | 20.34 % | 20.34 % |
| Tax refund | 4 k€ | 10 k€ | 2 k€ | 666 € | – |
| Back-tax owed | – | – | – | – | – |
Source: official public tax records.
Board and representatives
Active people registered in the official company register, by role.
Location on map
The company's registered location: Helsinki.
About Insinööritoimisto Matti Hallasaari Oy
Insinööritoimisto Matti Hallasaari Oy (Business ID 0550682-8) is a Finnish limited company (Oy), registered in the Trade Register on 17.11.1983. Latest reported revenue is 2,0 M€ (2025), with about 10 employees, based in Helsinki.
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