Insights

Global expansion Marshall Day Acoustics has recently expanded its footprint to include new office presence in Australia, the United Kingdom, and other regions, while closing older locations in Hong Kong and Shanghai. This signals growth ambitions and potential cross-border projects where integrated acoustic consultancy services could be introduced or scaled.

Award and client focus The firm won the 2025 Client Choice Award for Best Acoustical Consulting Firm, indicating strong client satisfaction and credibility. This presents an opportunity to leverage case studies and referrals in new bids, especially for high-profile performing arts, civic, and large-scale infrastructure projects.

Diverse project portfolio MDA specializes in noise and vibration for performing arts spaces, civic and commercial developments, and transportation infrastructure, with capabilities in marine and underwater acoustics and data acquisition. This breadth enables cross-selling to clients undertaking complex multidisciplinary projects requiring advanced acoustic and vibration expertise.

Proprietary tools The company develops high-quality acoustic design tools such as INSUL, IRIS, dBWav, dBSea, and Zorba used globally. These tools represent potential value-adds in proposals and can be offered as technology-driven services or licensed to partners and clients for ongoing acoustic optimization.

Employee ownership Being 100 percent employee-owned for over 25 years can be a differentiator in competitive bids, signaling stability, long-term commitment, and aligned incentives. This may resonate with government and large enterprise clients seeking trusted, enduring advisory partners.

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Marshall Day Acoustics Tech Stack

Marshall Day Acoustics uses 8 technology products and services including Hotjar, Amazon Web Services, Squarespace, and more. Explore Marshall Day Acoustics's tech stack below.

Media & News

Marshall Day Acoustics's Email Address Formats

Marshall Day Acoustics uses at least 6 email formats:
Marshall Day Acoustics Email FormatsExamplePercentage
First.Last@marshallday.co.nzJohn.Doe@marshallday.co.nz
81%
First@marshallday.co.nzJohn@marshallday.co.nz
19%
FLast@marshallday.comJDoe@marshallday.com
86%
Last@marshallday.comDoe@marshallday.com
5%
First.Last@marshallday.comJohn.Doe@marshallday.com
6%
FirstLast@marshallday.comJohnDoe@marshallday.com
3%

Frequently Asked Questions

What is Marshall Day Acoustics's official website and social media links?

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Marshall Day Acoustics's official website is marshallday.com and has social profiles on LinkedIn and Crunchbase.

How much revenue does Marshall Day Acoustics generate?

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As of August 2026, Marshall Day Acoustics's annual revenue is estimated to be $100M - $250M.

What is Marshall Day Acoustics's NAICS code?

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Marshall Day Acoustics's NAICS code is 54131 - Architectural Services.

How many employees does Marshall Day Acoustics have currently?

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As of August 2026, Marshall Day Acoustics has approximately 115 employees across 4 continents, including Oceania, Europe and North America. Key team members include Chief Executive Officer: C. D., Head Of Technology: M. J. and Director: M. O. Explore Marshall Day Acoustics's employee directory with LeadIQ.

What industry does Marshall Day Acoustics belong to?

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Marshall Day Acoustics operates in the Architecture and Planning industry.

What technology does Marshall Day Acoustics use?

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Marshall Day Acoustics's tech stack includes Hotjar, Amazon Web Services, Squarespace, Squarespace Commerce, Office 365, AfterPay, Microsoft Azure and Bootstrap.

What is Marshall Day Acoustics's email format?

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Marshall Day Acoustics's email format typically follows the pattern of First.Last@marshallday.co.nz. Find more Marshall Day Acoustics email formats with LeadIQ.

How much funding has Marshall Day Acoustics raised to date?

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As of August 2026, Marshall Day Acoustics has raised $25K in funding. The last funding round occurred on Jul 01, 2024 for $6.7K.

When was Marshall Day Acoustics founded?

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Marshall Day Acoustics was founded in 1981.
Marshall Day Acoustics logo

Marshall Day Acoustics

Architecture and PlanningAuckland, New Zealand51-200 Employees

Marshall Day Acoustics is a specialist acoustics consultancy that addresses noise and vibration across diverse projects, from intricate performing arts venues to large-scale civic and commercial developments and transportation infrastructure. The firm combines traditional environmental, building, and room acoustics with more technical areas such as vibration, marine and underwater acoustics, and sound insulation theory and data acquisition. Its advisory work is delivered in varied forms, including reports, design guidance, peer reviews, expert evidence, seminars, stakeholder consultation, policy development, and virtual reality simulations.

Headquartered in Auckland, New Zealand, the company traces its origins to 1981 when Sir Harold Marshall and Christopher Day founded it, with an Australian arm established in 1987 by Peter Fearnside; it has operated as entirely employee-owned for more than a quarter-century. Positioned as one of the world's leading acoustic consultancies within the architecture and planning sector, it serves clients across New Zealand and Australia and develops design tools that are used globally by researchers, consultants, designers, and manufacturers. In 2025 the firm expanded its offices to Australia and the United Kingdom, and the Auckland team moved to a new Level 5 office at 2 Commerce Street.

Section iconCompany Overview

NAICS Code
54131 - Architectural Services
Founded
1981
Employees
51-200

Section iconFunding & Financials

  • $25K

    Marshall Day Acoustics has raised a total of $25K of funding over 4 rounds. Their latest funding round was raised on Jul 01, 2024 in the amount of $6.7K as a Grant.

  • $100M - $250M

    Marshall Day Acoustics's revenue is estimated to be in the range of $100M - $250M

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