IS Design Portfolio
IS Design Studio · Singapore
Penthouse Interior Design Singapore
Private sanctuaries at altitude — premium materials, layered lighting and space to entertain, designed around the way you live.
Speak With Our Designer35 Google Reviews · 5.0 Rating · Site Assessment Before Every Proposal
Drama and Comfort Can Live Together
A penthouse gives you what most homes never will: scale, light and views. But scale without warmth feels like a lobby, and drama without comfort is a showroom you happen to sleep in.
IS Design Studio designs penthouses as personal sanctuaries first. We work with proportion, layered lighting and premium materials to create rooms that impress when you host — and hold you gently when it is just you. High-ceiling volumes, double-height spaces and vertical detailing are our signature territory as The Loft Builder.
Scale, Light & Proportion
Double-height living, generous sightlines and views framed deliberately — volume shaped, never wasted.
Premium Materials & Lighting
Natural stone, warm timber and layered lighting that shifts from entertaining to everyday calm.
Privacy With Room to Host
Entertaining zones and private quarters planned so guests flow naturally — and your sanctuary stays yours.
Featured Penthouse Projects
Explore the full IS Design portfolio, or see our signature loft design Singapore work.
5.0 ★
35 Google Reviews · Singapore Homeowners
Clients consistently highlight our responsive communication, practical yet beautiful design suggestions, hands-on renovation coordination and responsible follow-up after handover.
Condo Renovation Questions, Answered
What makes penthouse design different?
Scale and light change everything — proportion, acoustics and lighting need deliberate design, and high-ceiling volumes reward vertical thinking.
Do you source premium materials for penthouse projects?
Yes. Material selection — stone, timber, metals and textiles — is central to our penthouse design process.
How involved will I be in the process?
As involved as you would like. We begin with a site assessment and design consultation to understand your lifestyle before proposing a concept.
How long does a penthouse renovation take?
Most penthouse projects run 12 to 18 weeks from confirmed design, depending on scope and material lead times.
Create Your Personal Sanctuary
Your penthouse design journey starts with one conversation.
Speak With Our Designer Book a Design Consultation