Helimaki Akustikot

What Helimaki Akustikot does

Helimäki Akustikot Oy is a Finnish acoustic design and consulting firm founded in 1996, headquartered in Espoo with offices in Lahti, Tampere, and Kuopio. The company delivers acoustic engineering, noise control, and vibration management services for building construction, renovation, infrastructure, and industrial clients across Finland. It currently operates as a subsidiary of Sitowise Group Oyj, a publicly listed design and consulting platform on Nasdaq Helsinki (SITOWISE), following an acquisition and subsequent merger with Sito Oy's environmental noise experts that formed what the firm describes as Finland's largest acoustics, noise, and vibration practice.

The service portfolio spans five core areas: acoustic design and consulting, on-site acoustic measurements and testing, acoustic training and applied research, environmental noise surveys and control, and vibration/structure-borne sound analysis. Engagement covers the full project lifecycle, from land-use planning through construction and the warranty period, and the firm contributes to national acoustic guidelines and R&D collaboration with building-product manufacturers. The team of 30+ specialists combines field instrumentation, acoustic simulation, and expert advisory work, supported by thought-leadership assets such as the 'Humisevat Kunnaat' podcast and an email newsletter.

Revenue is generated through fee-based professional consulting on a project and quote basis, sold via direct engagement rather than self-serve channels. Customer segments are diversified across government agencies (e.g., Kansallisarkisto, Senaatti-kiinteistöt), municipalities, healthcare operators (HEKA, Idän perhekeskus), educational institutions (Hyytiälän metsäasema), residential real-estate developers, construction firms, and industrial clients. The business is entirely domestic; there are no disclosed international operations, no external funding events (the firm is owned by Sitowise), and no AI/ML-driven product lines.

Name

Helimaki Akustikot

Legal name

Helimäki Akustikot Oy

Website

https://helimaki.fi

Company type

Private

Founded year

1996

Operating status

Acquired

Headcount range

11–50 employees

Short description

Helimäki Akustikot Oy, founded in 1996 and now part of Sitowise Group, is a Finnish acoustic design and consulting firm employing 30+ specialists who provide acoustic engineering, noise control, and vibration management services for construction, infrastructure, and industrial clients across Finland.

Ownership category

akta.pro rank

Product category

Acoustic Engineering Services

NAICS

Testing Laboratories and Services (541380), Testing Laboratories and Services (54138), Building Inspection Services (54135)

SIC

Services-Testing Laboratories (8734), Services-Commercial Physical & Biological Research (8731)

akta.pro industry

PRIMARYEUAHACAG

Noise & Vibration Monitoring (Environmental/Community/Construction)

Energy, Utilities & Environment/Environmental Compliance, Monitoring & Consulting/Environmental Monitoring & Sampling (Air/Water/Soil/Noise)

SECONDARYIMAFANAL

Acoustic & Soundproofing Works

Industrials, Manufacturing & Construction/Construction & Civil Engineering/Interior Fit-Out & Finishing Contractors

SECONDARYBPABACAJ

Testing, Adjusting & Balancing (TAB) & Performance Verification

Business & Public Services/Facilities Management & Building Services/Building Engineering & Technical Maintenance (MEP/HVAC)

Keywords

• Acoustic design services
• Noise control consulting
• Vibration analysis services
• Architectural acoustics
• Environmental noise measurement

Headquarters

HQ city

Helsinki

HQ country

Finland

HQ region

Europe

Offices5 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Technology or R&D, Marketing or Sales, Others

Revenue model

1. Professional Consulting Services: Fee-based consulting and design services for acoustic engineering, noise control, and vibration management in construction projects, infrastructure developments, and industrial applications

Go-to-market motion1 record

Distribution channels1 record

Marketing channels4 records

Core offering

Helimaki Akustikot provides acoustic design, acoustic and vibration measurements, noise control consulting, and acoustic testing services for buildings and infrastructure projects. The firm plans room and building acoustics, conducts environmental and occupational noise assessments, and verifies performance through on-site measurements and laboratory tests, serving public and private-sector clients across Finland.

Product overview

Helimaki Akustikot, operating as part of Sitowise, provides a comprehensive suite of acoustic services. The offering consists of five core service areas: acoustic design and consulting, acoustic measurements and testing, acoustic training and research, noise surveys and noise control, and vibration and structure-borne sound services. These services are delivered by over 30 acoustic, noise, and vibration experts with experience dating back to 1996. The company serves building construction projects, land-use planning, transportation infrastructure, and industrial clients across all project phases from planning through construction to warranty period.

Differentiator

Problem solved

Functional benefit

Products and services

• Acoustic Design and Consulting

Named customers9 records

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Scale indicators2 records

Recent moves6 records

Expansion highlights4 records

Broad incumbents

• Ramboll: Global engineering consultancy with a sizable Nordic acoustics practice; competes with Helimaki on building and environmental acoustic design as part of broader multi-disciplinary project commissions.
• Sweco: Nordic engineering and design consultancy with acoustics capabilities across buildings, infrastructure and environment; competes as a full-service alternative to a bundled Sitowise/Helimaki engagement.
• Arup: Global engineering consultancy with a renowned acoustics, AV and theatre consulting practice; competes for high-profile building, transport and cultural venue acoustics commissions.
• WSP: Global professional services firm with an acoustics and vibration practice serving built environment and infrastructure clients, providing multi-disciplinary competition to independent acoustic specialists.
• Buro Happold: International engineering consultancy with a dedicated acoustics team providing building and environmental acoustic design as part of multi-disciplinary building services offerings.
• AFRY: Large Nordic engineering firm (formerly ÅF / Pöyry) with acoustics resources supporting building, industrial and infrastructure projects across Finland and the Nordics.

Direct peers

• Akukon: Finnish acoustic consulting firm offering building acoustics, environmental noise and vibration services to construction, infrastructure and industrial clients — directly overlapping Helimaki's service portfolio and end-markets in Finland.

Regional players

• Brekke & Strand Akustikk: Leading Norwegian acoustics consultancy serving buildings, transport and environmental noise projects; comparable specialist offering but operating in a different Nordic geography.
• Müller-BBM: German acoustic engineering consultancy with deep building acoustics, environmental noise and vibration expertise; comparable in technical depth to Helimaki but focused on the DACH market.

Others

• Sitowise Group: Helimaki's publicly listed parent on Nasdaq Helsinki — relevant comparable because it sets the strategic, capital and cross-sell context within which the acoustics unit operates, even though it is not a direct competitor.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat3 records

Key risks6 records

Key highlights6 records

Customer concentration

• YouTubeyoutube.com/channel/UCyGGedLoh5L8ZKaM0rt77qQ
• Facebookfacebook.com/sitowise
• LinkedInlinkedin.com/company/sitowise
• Instagraminstagram.com/sitowisesuomi

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Helimaki Akustikot