What Atelier 21 does

Atelier 21 is a privately held architecture and design firm headquartered in Quebec City, Canada, at 925 Grande Allée Ouest. The firm specializes in the design, planning, and construction administration of large-scale institutional and commercial buildings, with supporting expertise in urban design, sustainable architecture, LEED certification, building envelope rehabilitation, and heritage preservation. Its technical foundation rests on standard industry tools, primarily Revit software for execution plans, augmented by LEED-accredited professionals and decades of accumulated project experience. The firm has completed nearly 2,000 projects over its operating history and has been recognized with multiple provincial awards, including from the Ordre des architectes du Québec (OAQ), the Institut royal d'architecture du Canada (IRAC), and the Commission d'urbanisme de la Ville de Québec.

The firm's client base spans two primary verticals: government and public sector institutions (Government of Canada, Government of Quebec, Assemblée nationale du Québec, Commission de la Capitale nationale, Ville de Québec) and private commercial enterprises (Desjardins, Ivanhoé Cambridge, Sobeys, Couche-Tard, Familiprix). Notable heritage and civic projects include the Grand Théâtre de Québec, Palais Montcalm, the Assemblée nationale du Québec, Casino du Lac-Leamy, and the École nationale de police du Québec. Revenue is generated through professional service fees under a quote-based engagement model, with no publicly disclosed pricing. The firm reaches clients through direct engagement, architectural competitions, and referrals from existing government and private sector clients.

The firm is led by Carlo Peirolo, Senior Associate Architect, Lead Designer, and Project Leader, who has been designing projects since 1990. Atelier 21 operates as a single integrated practice rather than a platform, delivering end-to-end architectural services from feasibility studies through construction administration. The firm is currently actively recruiting, posting open positions for architectural technologists and candidate architects in early 2025, with roles situated at the Quebec City office.

Name

Atelier 21

Legal name

Atelier 21

Website

https://a21.ca

Company type

Private

Operating status

Operating

Headcount range

11–50 employees

Short description

Atelier 21 is a Quebec City-based architecture firm specializing in large-scale institutional and commercial buildings, urban design, sustainable architecture, and heritage preservation, serving government and private sector clients across Quebec.

Ownership category

akta.pro rank

Product category

Architectural Services

NAICS

Architectural Services (54131), Architectural, Engineering, and Related Services (5413), Interior Design Services (54141)

SIC

Construction - Special Trade Contractors (1700)

akta.pro primary industry

Green Building & Energy-Efficient Construction (LEED, Weatherization) (EDAOAAAO)

akta.pro secondary industry

Hospitality & Entertainment Venue Construction (IMAFACAC)

Keywords

• Architectural design services
• Urban design planning
• LEED certification consulting
• Building envelope rehabilitation
• Heritage building preservation

Headquarters

HQ city

Québec

HQ country

Canada

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Architecture and Design Services: Professional architecture and design services for institutional and commercial buildings, including project design, planning, construction management, and consulting. Revenue generated through professional service fees for architectural mandates.

Go-to-market motion1 record

Distribution channels1 record

Core offering

Atelier 21 is an architecture and design firm providing full-service architectural design for institutional and commercial buildings, including concept development, execution plans, construction administration, and site coordination. The firm also delivers urban design, LEED consultation and implementation, building envelope rehabilitation, and heritage preservation services. Its work is delivered by LEED-accredited architects and technologists to public and private sector clients primarily in Quebec.

Product overview

Atelier 21 is an architecture and design firm offering a unified suite of services centered on institutional and commercial architecture, urban design, and sustainable building practice. Its core offering consists of architecture services for large-scale institutional and commercial buildings, supplemented by specialized modules in LEED consultation, building envelope rehabilitation, and heritage preservation. The firm operates as a single integrated practice rather than a platform with modular products, delivering end-to-end architectural services from feasibility studies through construction administration.

Differentiator

Problem solved

Functional benefit

Products and services

• Architecture Services Full-service architecture and design for institutional and commercial buildings of scale, including concept development, execution plans, construction administration, and site coordination. Targeted at government and private sector clients with large building mandates.
• Urban Design Urban design services encompassing master planning, streetscape design, and public space development for municipal and institutional clients.
• LEED Consultation and Implementation LEED system consultation and implementation services provided by LEED-accredited professionals, covering sustainable design strategy and certification pursuit.
• Building Envelope Rehabilitation Expertise in building envelope assessment and rehabilitation, addressing waterproofing, thermal performance, and facade restoration.
• Heritage Preservation Conservation and restoration services for heritage buildings, both ancient and modern, integrating preservation principles with contemporary functionality.

Quantifiable outcome

• Nearly 2,000 projects completed for major government and private sector clients
• +1 more outcomes

Named customers10 records

Segments2 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature2 records

Scale indicators3 records

Recent moves3 records

Expansion highlights3 records

Direct peers

• Cardinal Hardy Architectes: Cardinal Hardy is a Quebec-based architecture firm with strong institutional and heritage portfolios. Comparable to Atelier 21 in public sector mandates, heritage preservation, and building envelope work in Quebec.
• GCAC (Gauthier, Guitard, Castonguay, Aubin): GCAC is a Quebec-based architecture firm with institutional and commercial practice. Comparable to Atelier 21 in Quebec institutional market and project-based delivery model.
• Saint-Gelais Montminy & Associés: Saint-Gelais Montminy is a Quebec City-based architecture firm serving institutional and commercial clients. Directly comparable to Atelier 21 in geographic market, customer segments, and project types in Quebec.
• Lapointe Magne Architectes: Lapointe Magne is a Quebec-based architecture firm specializing in institutional and commercial buildings. Comparable to Atelier 21 in geographic focus, customer base, and project portfolio.
• Jodoin Lamarre Pratte Architectes: Jodoin Lamarre Pratte is a Montreal-based architecture firm with leading institutional and healthcare portfolios. Comparable to Atelier 21 in Quebec public sector focus and large-scale institutional building work.
• Provencher Roy: Provencher Roy is a Montreal-based architecture and design firm specializing in institutional, cultural, and commercial projects. Directly comparable to Atelier 21 in serving Quebec institutional clients with strong urban design and heritage preservation portfolios.
• Birtz Bastien Beaulieu Architecture: Birtz Bastien Beaulieu is a Quebec architecture firm with institutional and commercial expertise. Comparable to Atelier 21 in Quebec market, public sector clients, and recognition through OAQ awards.

Broad incumbents

• Lemay: Lemay is one of Canada's largest architecture and design firms with deep institutional and commercial portfolios. Directly comparable to Atelier 21 in serving Quebec government, institutional, and commercial clients, but operates at much greater scale across multiple Canadian cities.
• Diamond Schmitt Architects: Diamond Schmitt is a Toronto-based architecture firm with major institutional and cultural portfolios across Canada. Comparable to Atelier 21 in institutional architecture focus and award-winning design (IRAC-aligned), but broader geographic reach.
• KPMB Architects: KPMB is a Toronto-based architecture firm with strong institutional, cultural, and sustainable design portfolios. Comparable to Atelier 21 in institutional design excellence and LEED-aligned practice, though at broader Canadian scale.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat3 records

Key risks5 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/atelier-21

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

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 Atelier 21