Spending power
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Spending power
Key facts
Counted staff
118
self-reported 51–200 band
Founded
1981
45 years
Legal entities
None matched
Office countries
3
15 addresses
Funding rounds
4
Grant · Aug 2024 · US$ 6.7K
Company type
Privately Held
self-reported
Description
Marshall Day Acoustics (MDA) is one of the world's leading acoustic consultancies. We provide specialist consulting in all areas of acoustics, with expertise in noise and vibration for a wide variety of projects including intricate performing arts spaces, large-scale civic and commercial developments, and expansive industry and transportation infrastructure.
Sir Harold Marshall and Christopher Day established Marshall Day Acoustics in Auckland, NZ in 1981. Peter Fearnside came on board as the third partner and founded Marshall Day Acoustics in Australia in 1987. MDA has been proudly 100% employee owned for more than 25 years, with over 30 employees in New Zealand and Australia invested in the company.
In our team, we have expert skills in traditional areas (environmental, building and room acoustics) as well as more specialised fields like vibration, marine and underwater acoustics, sound insulation theory and data acquisition.
We provide our advice in the most appropriate way for each project. This may include delivering reports, design advice, peer reviews, expert evidence, seminars, community and stakeholder consultation, developing policies and guideline or virtual reality simulations.
In addition to our specialist acoustic consulting work, we develop high quality acoustic design tools (INSUL, IRIS, dBWav, dBSea, Zorba) that are used globally by scholars, consultants, designers, and manufacturers. We are continually looking to improve our services, expand our technical expertise and develop our equipment and systems in order to provide the most comprehensive and cutting-edge design tools.
Specialties
All 15 specialties
- Acoustic Consulting
- Acoustic Engineering
- Acoustic Design
- Building Acoustics
- Room Acoustics
- Noise and Vibration Monitoring
- Noise and Vibration Assessments
- Sound System Design
- Environmental Noise
- Noise Control
- Underwater Acoustics
- Sound Insulation
- Architectural Acoustics
- Construction Noise
- Expert Witness Services
Locations
3
Countries with an office address15 addresses on record
Country footprint
Show as table · Offices in 3 countries
| Countries | 3 |
|---|
All codes: AU FR NZ
Addresses
- NZ290-292 Montreal Street; Christchurch, Canterbury 8013
- NZ3 Fairway Drive; Level 2; Kerikeri, Northland 0230
- NZ8 Stafford Street; Dunedin, Otago 9016
- NZQueenstown
- NZ148 Durham Street; Tauranga, Bay of Plenty 3110
- FR6, Avenue Ariane; Mérignac, Nouvelle-Aquitaine 33700
- NZLevel 5, 2 Commerce Street; Auckland Central, 1010Primary
- FR68, Boulevard Carnot; Cannes, Provence-Alpes-Cote d'Azur 06400
- AU31 Vardon Avenue; Adelaide, SA 5000
- NZ42 Egmont St; New Plymouth, Taranaki 4310
- AU6/448 Roberts Road; Subiaco, WA 6008
- NZ5 Willeston St; Level 2; Wellington, Wellington Region 6011
Showing 12 of 15 addresses on record.
Grid intelligence Members
Funding
Rounds4
Round typeGrant · non-equity funding
Amount (USD)6,700
Stage rank1
Investors named1
Since last round1 yr 5 mo
Funding
Show as table · 4 funding rounds
| Rounds | 4 |
|---|---|
| Axis | 1981 to 2026 |
| Grant · 1 Aug 2024 | US$ 6.7K |
Dated rounds only. The axis ends at the date this profile was last observed, not at today.
Signals & hiring
Hiring, headcount and registry-change signals, streamed to members.
Latest signal
Hiring activity
Headcount trend
Financials
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Paid-up capital
Fiscal period
Registered charges
Revenue
Profit / loss
People & contacts
4 employee profiles on record · names withheld.
Names and titles are intentionally absent from this page. The source relation carries no consent record across the privacy regimes this directory spans, so it is never requested and never stored. Search engines see exactly what you see here.
The people relation is never requested, so there is nothing here to unlock.
FAQ
How many people work at Marshall Day Acoustics?
118 counted staff profiles at January 2026, inside the self-reported 51–200 band.
Where does Marshall Day Acoustics have offices?
15 addresses on record across 3 countries. Primary: Level 5, 2 Commerce Street, Auckland Central 1010.
Has Marshall Day Acoustics raised funding?
Four rounds. Latest 1 August 2024: grant, US$6,700, investor Callaghan Innovation.
What does Marshall Day Acoustics list as its specialties?
15 tags on the brand's own list, among them Acoustic Consulting, Acoustic Engineering and Acoustic Design.
Which companies are listed alongside Marshall Day Acoustics?
29 profiles list Marshall Day Acoustics as a peer — 98th percentile in Architecture and Planning. It lists ten peers of its own. Resonate Consultants and Acoustic Logic list it back.