Insights

Expansion momentum Mancini Duffy is actively expanding with new offices in Phoenix and Seattle and has recent leadership additions, signaling a growth trajectory and opportunities to partner on workplace design and project delivery in multiple regions.

Tech-forward practice The firm emphasizes a tech-forward approach and utilizes tools across design and collaboration ecosystems, suggesting opportunities to offer advanced design platforms, BIM/3D visualization, and integrated digital workflow solutions.

Strategic partnerships Recent collaboration with Selective Insurance to redesign workplace environments indicates openness to consulting-led design projects and long-term facilities programs with financial services or policy-adjacent clients.

Mature design firm With a 100-year history and a mid-sized team, Mancini Duffy combines established brand credibility with scalable delivery, presenting a fertile ground for repeat business across architecture, planning, and interior design services.

Financial capacity Revenue in the mid-range hundreds of millions and steady expansion activity imply capacity for larger, multi-location commissions and curated portfolios, making them a viable candidate for bundled services, sustainability upgrades, and capex-driven projects.

Mancini Duffy Tech Stack

Mancini Duffy uses 8 technology products and services including Register.com, Microsoft Excel, Microsoft 365, and more. Explore Mancini Duffy's tech stack below.

  • Register.com
    Domain Name Services
  • Microsoft Excel
    Editors
  • Microsoft 365
    Email
  • Microsoft Office
    Office Suites
  • Flywheel
    Platform As A Service
  • C#
    Programming Languages
  • JavaScript
    Programming Languages
  • Google Tag Manager
    Tag Management

Mancini Duffy's Email Address Formats

Mancini Duffy uses at least 1 format(s):
Mancini Duffy Email FormatsExamplePercentage
FLast@manciniduffy.comJDoe@manciniduffy.com
98%
FirstLast@manciniduffy.comJohnDoe@manciniduffy.com
1%
FirstLas@manciniduffy.comJohnDoe@manciniduffy.com
1%

Frequently Asked Questions

Where is Mancini Duffy's headquarters located?

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Mancini Duffy's main headquarters is located at 520 8th Avenue 23rd Floor New York, New York 10018 United States. The company has employees across 2 continents, including North AmericaAsia.

What is Mancini Duffy's phone number?

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You can contact Mancini Duffy's main corporate office by phone at . For more prospecting data, LeadIQ has access to up-to-date and accurate contact information within our platform. Find, capture, and sync contact data to your CRM and sales tools in one click.

What is Mancini Duffy's official website and social media links?

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Mancini Duffy's official website is manciniduffy.com and has social profiles on LinkedIn.

What is Mancini Duffy's SIC code NAICS code?

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Mancini Duffy's SIC code is 7389 - Business Services, Not Elsewhere Classified NAICS code is 54131 - Architectural Services.

How many employees does Mancini Duffy have currently?

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As of May 2026, Mancini Duffy has approximately 169 employees across 2 continents, including North AmericaAsia. Key team members include Chief Executive Officer: W. M. R.Chief Executive Officer: A. S.Chief Executive Officer: B. M.. Explore Mancini Duffy's employee directory with LeadIQ.

What industry does Mancini Duffy belong to?

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Mancini Duffy operates in the Architecture and Planning industry.

What technology does Mancini Duffy use?

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Mancini Duffy's tech stack includes Register.comMicrosoft ExcelMicrosoft 365Microsoft OfficeFlywheelC#JavaScriptGoogle Tag Manager.

What is Mancini Duffy's email format?

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Mancini Duffy's email format typically follows the pattern of FLast@manciniduffy.com. Find more Mancini Duffy email formats with LeadIQ.

When was Mancini Duffy founded?

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Mancini Duffy was founded in 1915.

Mancini Duffy

Architecture and PlanningNew York, United States51-200 Employees

Mancini Duffy is a national design firm based in New York City that specializes in architecture, planning, and interior design. The company traces its history back more than a hundred years. It pursues a technology-forward approach to design, reflecting an emphasis on modern processes and tools. As a mid-sized practice with national reach, it serves clients seeking integrated design leadership for their spaces.

In 2024 the firm expanded its regional footprint with a new office in metro Phoenix.

Section iconCompany Overview

Headquarters
520 8th Avenue 23rd Floor New York, New York 10018 United States
Phone number
SIC Code
7389 - Business Services, Not Elsewhere Classified
NAICS Code
54131 - Architectural Services
Founded
1915
Employees
51-200

Section iconFunding & Financials

  • $50M$100M

    Mancini Duffy's revenue is estimated to be in the range of $50M$100M

Section iconFunding & Financials

  • $50M$100M

    Mancini Duffy's revenue is estimated to be in the range of $50M$100M

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