Lemay

What Lemay does

Lemay is a privately held, integrated architecture and design firm founded in 1957 in Montreal, Quebec, operating across architecture, interior design, landscape architecture, structural engineering, sustainability consulting, urban design, urban planning, branding, and digital services. The firm serves enterprise clients, real estate developers, and government entities on residential, commercial, hospitality, healthcare, transportation, educational, and cultural projects, with marquee mandates including the Réseau Express Métropolitain (REM) station program in consortium with Perkins&Will and Bisson Fortin, the Humaniti vertical village, the Bellechasse Transport Centre for the Société de transport de Montréal, and the zero-carbon UAP headquarters.

The firm's proprietary technology stack centers on the trademarked NET POSITIVE™ sustainability framework (Health, Environment, Carbon), supported by sub-brands Lemay Place (workspace optimization), Lemay Dev™ (development advisory), Lemay_id (interior design studio), Lemay Connex (digital twins and 3D modeling), and the post-2024 Fusion EI platform, which embeds AI-integrated control algorithms and energy consumption forecasting into a managed energy intelligence service. Approximately 350 professionals work out of the Montreal headquarters, with nine additional offices across Canada (Toronto, Quebec City, Calgary, Edmonton), the United States (Brooklyn), the Middle East (Dubai), Latin America (São Paulo), and Europe (Copenhagen, Aarhus).

Revenue is generated primarily through project-based professional services fees tied to scope and complexity, complemented by managed-services revenue from digital and energy intelligence offerings that grew materially with the 2024 merger with Fusion Énergie. The go-to-market is direct enterprise field sales with consortium partnerships on tier-one infrastructure, coordinated through an internal Project Management Office (PMO). Customer mix spans enterprise and government anchors, and the firm ranks 27th worldwide on the 2026 World Architecture 100 and 4th in Canada on the 2026 Architizer ranking, with 500+ design awards and 13 consecutive years as a Deloitte Canada's Best Managed Companies Platinum winner.

Name

Lemay

Legal name

Lemay CO Inc.

Website

https://lemay.com

Company type

Private

Founded year

1957

Operating status

Operating

Headcount range

251–500 employees

Short description

Lemay is a privately held, integrated architecture and design firm founded in 1957 in Montreal, delivering architecture, urban design, interior design, sustainability, and energy intelligence services to enterprise clients, developers, and governments across ten global offices.

Ownership category

akta.pro rank

Product category

Architecture and Design Services

NAICS

Management, Scientific, and Technical Consulting Services (5416), Interior Design Services (541410)

SIC

Services-Engineering Services (8711), Services-Engineering, Accounting, Research, Management (8700)

akta.pro primary industry

Sustainable/Green Building & LEED Consulting (BPAHAKAG)

akta.pro secondary industry

EHS Management Systems & ISO Consulting (ISO 14001/45001) (BPAHAJAF)

Keywords

• Architecture design services
• Sustainable building design
• Urban planning services
• Interior design services
• Energy intelligence platform

Headquarters

HQ city

Montreal

HQ country

Canada

HQ region

North America

Offices10 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Architecture and Design Services: Professional services revenue from architecture, interior design, landscape architecture, structural engineering, sustainability consulting, urban design, and urban planning services for various project types including residential, commercial, hospitality, healthcare, transportation, and institutional projects.
2. Digital and Energy Intelligence Services: Lemay Connex digital services and Fusion EI energy optimization platform providing ongoing consulting and optimization services for building energy transition and decarbonization.

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels5 records

Core offering

Lemay is an integrated architecture and design firm that delivers professional services across architecture, interior design, urban design, landscape architecture, structural engineering, sustainability, branding, digital services, and energy intelligence. It sells project-based design and consulting engagements to enterprise, institutional, and government clients, supported by proprietary platforms including the NET POSITIVE™ sustainability framework, the AI-driven Fusion EI energy intelligence platform, and the Lemay Connex digital-twin and 3D modeling offering.

Product overview

Lemay is an architecture and design firm offering a comprehensive portfolio of services including architecture, interior design, branding, landscape architecture, structural engineering, sustainability, urban design, urban planning, digital services, and energy intelligence. The firm provides proprietary optimization services through Lemay Place (workspace optimization), Lemay Dev (development approach), Lemay Connex (digital services including digital twins and 3D modeling), and the Fusion EI Platform (AI-powered energy intelligence and building optimization).

Differentiator

Problem solved

Functional benefit

Brands

• NET POSITIVE: Lemay's sustainability approach framework focused on Health, Environment, and Carbon, aimed at creating sustainable and transformative spaces
• Lemay Dev
• Lemay Place
• Lemay Connex
• Lemay_id

Products and services

• Architecture Services Full-scope architecture services for residential, commercial, hospitality, healthcare, transportation, educational, cultural, and industrial projects, delivered by transdisciplinary teams under the firm's integrated design process and NET POSITIVE™ sustainability framework; for enterprise, government, and institutional clients.
• Interior Design Services (Lemay_id) Interior design services for commercial, hospitality, cultural, residential, and workplace interiors, with the New York-based Lemay_id studio exploring connections between identity, culture, and space; for enterprise and institutional clients.
• Urban Design and Planning Urban design, urban planning, public realm and parks services for cities and developers, integrated with the firm's architecture and landscape architecture capabilities; for municipal authorities and developers of large neighbourhoods and transit precincts.
• Landscape Architecture Services Landscape architecture services for parks, public squares, memorials, and urban realms, led by CSLA-credentialed practitioners; for municipalities, public authorities, and private developers of mixed-use and public-space projects.
• Structural Engineering Services Structural engineering services for buildings and major infrastructure, delivered by the ELEMA partnership and integrated with the firm's architecture and design teams; for enterprise, institutional, and government clients.
• NET POSITIVE™ Sustainability Consulting Sustainability consulting services based on the proprietary NET POSITIVE™ framework focused on Health, Environment, and Carbon, supporting LEED, Zero Carbon Building, WELL, Fitwel and other green-building certifications; for enterprise and government clients.
• Branding Services Brand identity, wayfinding and experiential branding services integrated with architecture, interiors, and the firm's proactive development approach (Lemay Dev™); for developers, corporations, hospitality, and institutional clients.
• Lemay Connex Digital Services Digital services for built environments providing evidence-based data collection, optimized 3D modeling, and digital twins to enhance user experience, facilitate project marketing, and optimize daily operations; for enterprise, institutional, and public-sector project owners.
• Fusion EI Energy Intelligence Platform AI-integrated energy intelligence platform that identifies data trends in building operations, generates energy consumption forecasts, and anticipates measures to reduce energy consumption and carbon emissions; for building owners and operators seeking decarbonization outcomes.

Quantifiable outcome

• 40% reduction in material-related emissions compared to standard practices (GEOpark project)
• +3 more outcomes

Named customers8 records

Segments8 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

AI capability2 records

Feature5 records

Partnerships

Seven partnerships are on record, tiered core and regional.

• Fusion ÉnergiecoreStrategic or Co-development Partner · 23 January 2024Strategic union to accelerate building decarbonization through combined design and energy intelligence solutions. Fusion Énergie brings AI-integrated control algorithms and energy optimization capabilities through their Fusion EI platform.
• Giovanni Tassone (Toronto practice)regionalStrategic or Co-development Partner · 1 January 2023Toronto-based architectural practice merged with Lemay in 2023, bringing residential, commercial and industrial design expertise to the GTA market.
• Toker and AssociatesregionalStrategic or Co-development Partner · 1 January 2017Calgary-based architectural and interior design firm integrated into Lemay in 2017, expanding westward operations.
• Andres Escobar DesignregionalStrategic or Co-development Partner · 1 January 2015New York-based architectural practice established in 2015, later becoming Lemay_id, the firm's interior design studio.
• ELEMAcoreStrategic or Co-development Partner · 1 January 2014Structural engineering firm partnership established through acquisition of three entities from IBI Group in 2014, providing integrated structural engineering services.
• Perkins&WillcoreStrategic or Co-development PartnerConsortium partner for the Réseau Express Métropolitain (REM) project, developing 26-station, 67 km automated public transit network - the largest in North America.
• Bisson FortincoreStrategic or Co-development PartnerConsortium partner for the REM stations project, contributing to the transdisciplinary approach balancing technical ambition with social and environmental considerations.

Scale indicators7 records

Recent moves8 records

Expansion highlights6 records

Direct peers

• Perkins&Will: Global architecture and design firm that is Lemay's consortium partner on the REM stations project. Comparable in size, sustainability leadership, and multidisciplinary service model, with similar focus on healthcare, transportation, and education.
• Diamond Schmitt Architects: Toronto-based architecture firm with comparable Canadian footprint and a strong portfolio in healthcare, education, and cultural buildings. Direct competitor for institutional and healthcare design mandates.
• B+H Architects: Toronto-headquartered global architecture, interior design, and planning firm. Closely comparable in scale, transdisciplinary model, and international office network across the Middle East, Asia, and the Americas.
• KPMB Architects: Toronto-based architecture and design firm comparable in scale, with strong sustainability credentials and portfolio in cultural, academic, and healthcare buildings. Direct competitor for high-design Canadian mandates.
• Bisson Fortin: Quebec-based architecture firm and Lemay's REM consortium partner. Directly comparable regional peer with strong institutional and transportation portfolios in the Quebec market.

Broad incumbents

• Stantec: Canadian-based global design and engineering firm with architecture, structural engineering, and sustainability practices. Overlaps with Lemay on integrated design, urban planning, and infrastructure, but operates at much larger scale across water, environment, and energy.
• Gensler: Largest global architecture and design firm, ranked #1 in WA100. Competes with Lemay on large-scale commercial, hospitality, and workplace projects, though much broader portfolio and deeper international footprint.
• HOK: Global architecture, engineering, and planning firm with extensive healthcare, aviation, and sustainability practices. Overlaps with Lemay on large-scale infrastructure and net-zero design mandates.
• IBI Group: Toronto-based global design and technology firm. Lemay acquired three IBI Group entities in 2014 to form ELEMA; comparable on integrated design, urban planning, and smart-city advisory, though much broader technology scope.

Regional players

• WZMH Architects: Toronto-based architecture firm with comparable Canadian focus on healthcare, commercial, and institutional projects. Smaller scale than Lemay but direct overlap on core market segments.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks5 records

Key highlights7 records

Customer concentration

• Xx.com/lemayonline

Compliance10 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles16 records

Subsidiaries4 records

Funding overview

Funding rounds

Investors

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

M&A2 records

Investments

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

Frequently asked questions about Lemay