One X One Design

What One X One Design does

One X One Design is a Toronto-based luxury design and construction management firm, incorporated as ONE X ONE DESIGN INC. and founded in the late 1990s by Hilda Mohseni, who leads the firm as Founder, Principal, and Creative Director alongside Avida Mohseni as Principal and COO. The company delivers integrated design-build services for high-net-worth residential clients and select commercial accounts, spanning interior design, architecture, electrical and HVAC engineering, home automation integration, cabinetry, and turnkey construction management, supported by a post-delivery After Care Service. Project scale ranges from roughly 1,500 sq ft residential condos to 10,000+ sq ft estates and a 48,000+ sq ft commercial clinic, with notable signature work including the Uplands Estate, Modern Lake House, and Luxury Yacht Inspired Home.

Name

One X One Design

Legal name

ONE X ONE DESIGN INC.

Website

https://onexonedesign.com

Company type

Private

Founded year

1990

Operating status

Operating

Headcount range

11–50 employees

Ownership category

akta.pro rank

Product category

Luxury Design and Construction Management Services

NAICS

Interior Design Services (541410), Interior Design Services (54141), Architectural Services (54131), Architectural Services (541310)

SIC

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

akta.pro primary industry

Interior Design Services (BPAHAKAB)

akta.pro secondary industries

Architectural Design Services (BPAHAKAA), Design-Build / EPC General Contracting (IMAFAAAD)

Keywords

• Luxury interior design
• Design-build services
• Construction management
• Residential architecture
• Commercial showroom design

Headquarters

HQ city

Toronto

HQ country

Canada

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Design Services: Full interior design and architectural design services including electrical, HVAC, home automation, and cabinetry drawings. Project-based fees for design work.
2. Construction Management Consultation: Construction management consultation services with turnkey delivery. Collaborative approach with vendors and service providers. After Care Service for post-construction support.
3. Design and Build Projects: Integrated design and build services combining design, procurement, and construction management under one engagement.

Pricing tiers

Go-to-market motion2 records

Distribution channels1 record

Marketing channels5 records

Core offering

One X One Design is a luxury design and construction management firm that delivers integrated interior design, architecture, and construction management services for high-end residential and commercial projects. Core offerings include Design Services, Construction Management Consultation, integrated Design & Build Services, and a post-construction After Care Service, delivered by a multidisciplinary team of architects, engineers, project managers, and design professionals.

Product overview

ONE X ONE DESIGN is a Luxury Design & Construction Management Firm offering a unified portfolio of services. The company operates as a full design and build firm with two core offerings: Design Services (a collaborative, humanistic approach to interior design for residential and commercial spaces) and Construction Management Consultation (delivered by a multidisciplinary team of architects, engineers, and project managers with over two decades of experience). An After Care Service provides post-construction support to residential clients. The firm specializes in high-end residential projects including custom homes, estate properties, model suites, and commercial spaces such as medical clinics, showrooms, and golf facilities. Projects range from luxury yacht-inspired homes and lake houses to commercial showrooms for brands like Kohler, representing projects spanning from 1,500 sq ft condos to 10,000+ sq ft estates.

Differentiator

Problem solved

Functional benefit

Products and services

• Design Services Collaborative interior design services for residential and commercial spaces, emphasizing humanistic design approaches and integration of client lifestyle and vision.
• Construction Management Consultation Full design and construction management services delivered by a multidisciplinary team of architects, engineers, and project managers with over two decades of combined experience, including vendor coordination and turnkey delivery.
• Design and Build Services Integrated design and construction management engagement combining design, procurement, and construction management under a single contract for luxury residential and commercial projects.
• After Care Service Post-construction support service provided to residential clients after project delivery, extending the firm's relationship beyond handover.

Quantifiable outcome

• Over 98 showrooms designed across Canada and USA for Kohler
• +2 more outcomes

Named customers8 records

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature2 records

Partnerships

Three partnerships are on record, tiered major, core and flagship.

• KohlermajorStrategic or Co-development PartnerFive-year partnership designing over 98 showrooms across Canada and USA, four yearly trade shows, and two Ultimate Kohler Homes. Projects included Chicago flagship showroom, Denver, Las Vegas, and Toronto West showrooms. Fast-paced turnkey delivery requiring design, procurement, logistics, build, and teardown management.
• Eagles Nest Golf ClubcoreStrategic or Co-development PartnerDesigned state-of-the-art Titleist National Fitting Centre located at Eagles Nest Golf Club in Maple, Ontario. Combined sophisticated color palette, rich metals, custom wood cabinetry, and flooring to create warmth in modern facility.
• Princess Margaret Cancer CentreflagshipStrategic or Co-development PartnerDesigned two luxury condo units for Princess Margaret Home Lottery supporting cancer research—one 1,500 sq ft two-storey condo and one two-bedroom condo. Featured in Home Lottery program supporting one of top five cancer research centres in the world.

Scale indicators5 records

Recent moves6 records

Expansion highlights4 records

Direct peers

• Brian Gluckstein Interior Design: Toronto founder-led luxury interior design brand with strong media presence and HNW residential focus — comparable personal-brand-driven luxury design model.
• Yabu Pushelberg: Toronto-based luxury interior design and architecture studio serving high-end residential, hospitality, and retail clients globally — direct competitor for premium design mandates anchored in the GTA.
• DesignAgency: Toronto-based multidisciplinary design firm covering interior design, branding, and architecture for hospitality and luxury retail — comparable Toronto luxury design competitor.
• Kimberley Seldon Design: Toronto-based luxury residential interior design firm led by a principal designer with national brand presence — comparable founder-driven HNW interior design positioning.
• Union31: Toronto luxury interior design and project management studio serving high-end residential and commercial clients — comparable design-build services model in the same market.
• Cecconi Simone: Toronto multidisciplinary interior design and architecture practice covering luxury residential, commercial, and hospitality — directly overlapping design-build scope.
• Sarah Richardson Design: Toronto founder-led residential interior design brand with national media exposure and a comparable HNW residential client focus.
• Audax Architecture: Toronto boutique architecture and interior design firm with luxury custom home and high-end residential portfolio — directly comparable project type and scale.
• Burdifilek: Toronto luxury interior design firm known for high-end residential and hospitality projects — comparable boutique luxury interior design positioning and project scale.
• Ferris + Associates: Toronto luxury interior design firm serving HNW residential clients with a similar founder-led, custom residential mandate.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/onexonedesigninc
• Instagraminstagram.com/onexonedesign
• Pinterestpinterest.ca/onexonedesign
• Xx.com/ONEXONEDESIGNI1

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

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 One X One Design