ABOUT US

3+i Design Studio Singapore Our Team

Innovation drives how we think – challenging conventions and ideas to create solutions that are both relevant and practical.

Imagination shapes how we design – translating concepts, narratives, and intent into spaces that feel purposeful and considered.

Interaction defines how we work – through close collaboration and open dialogue, we align design decisions with real needs, budgets, and timelines.

Together, these principles allow us to design with clarity and deliver spaces with intent.

FOUNDER & CEO

CHIEF HUMAN OFFICER (CHO)

PROJECT MANAGER

HENG KAI SIEN (KS)

PENY YU

XAVIER TAN

DESIGN & PROJECT COORDINATOR

SENIOR DESIGN CONSULTANT

QS ACCOUNTANT

DARREN SIN

CHAN JING YING (JY)

EDWARD KEE

FOUNDER & CEO

HENG KAI SIEN (KS)

CHIEF HUMAN OFFICER (CHO)

PENY YU

PROJECT MANAGER

XAVIER TAN

PROJECT MANAGER

DARREN SIM

PROJECT MANAGER

LAI JING YING (JY)

ACCOUNTS MANAGER

EDWARD KEE

OUR SERVICES

1. DESIGN & BUILD
SERVICES
2. CONCEPT & DESIGN
STRATEGY
3. SPACE PLANNING
& PROGRAMMING
Integrated design and construction
delivery under a single team.

Defining design intent, direction, and
overall project approach.

Functional planning based on operational
needs and spatial requirements.

4. COST MANAGEMENT
& BUDGETING
5. DESIGN DEVELOPMENT
& 3D VISUALISATION
6. TECHNICAL &
CONSTRUCTION DRAWINGS
Cost planning and budget control
throughout the life cycle.

Developing designs through detailed
studies and visual representations.

Comprehensive drawings prepared for construction and coordination.

7. PROJECT MANAGEMENT
& SITE COORDINATION
8. POST-COMPLETION
& DEFECTS MANAGEMENT
6. TECHNICAL & CONSTRUCTION DRAWINGS
Managing site coordination, timelines,
and multi-party execution.

After-handover support, defects
coordination, and close-out
management.

After-handover support, defects coordination, and close-out management.


1. DESIGN & BUILD SERVICES
Integrated design and construction delivery under a single team.
2. CONCEPT & DESIGN STRATEGY

Defining design intent, direction, and overall project approach.

3. SPACE PLANNING & PROGRAMMING

Functional planning based on operational
needs and spatial requirements.

4. COST MANAGEMENT & BUDGETING

Cost planning and budget control
throughout the life cycle.

5. DESIGN DEVELOPMENT & 3D VISUALISATION

Developing designs through detailed studies
and visual representations.

6. TECHNICAL & CONSTRUCTION DRAWINGS

Comprehensive drawings prepared for construction and coordination.

7. PROJECT MANAGEMENT & SITE COORDINATION

Managing site coordination, timelines,
and multi-party execution.

8. POST-COMPLETION & DEFECTS MANAGEMENT

After-handover support, defects coordination,
and close-out management.