4I HDB Resale Interior Design Singapore

Give Your 4I a Clearer, Smarter Layout

For this 4I, the design opportunity is using the proportions of an improved four-room flat to create more generous everyday shared space. That shifts the conversation away from a standard renovation package and towards clean circulation, better furniture scale and carpentry that supports rather than dominates the rooms. We also resolve existing conditions, structural limits and ageing services early, so the final home feels natural to use rather than simply new.
RENOVATION COST CALCULATOR

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renovation budget

Get a preliminary estimate for your Singapore home based on its size, the work you need and your preferred finish.

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What type of property are you renovating?

This helps us set a realistic starting point for the estimate.

What is the approximate size of your home?

Select the closest range. Exact measurements can be reviewed later.

How much of the home are you planning to renovate?

What are you planning for the kitchen?

How many bathrooms will you renovate?

Which custom carpentry items do you need?

Select all that apply.

How much flooring and finishes work do you need?

How extensive will the electrical and lighting work be?

What level of finish are you looking for?

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YOUR PRELIMINARY ESTIMATE

Based on the home and renovation scope you selected.

Carpentry S$0
Wet Works S$0
Finishes S$0
M&E + Lighting S$0

This is a preliminary budget estimate. Actual costs may vary with site conditions, measurements, materials, design requirements and the final scope of work. It is not a quotation.

Want a more accurate estimate?

Share your floor plan with our designers and we’ll help you understand where your renovation budget is likely to go.

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Total Estimated Cost: S$0

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4I interior design by Luxior Concept
Property category
HDB Resale
Layout character
4-room resale HDB flat
Best opportunity
Better circulation, storage and daylight
Key constraint
Existing conditions, structural limits and ageing services
Planning reference
$65,000-$140,000+ · 8-12 weeks

Why a 4I should not be planned like every other home

What makes the 4I worth planning carefully is using the proportions of an improved four-room flat to create more generous everyday shared space. In practice, that means testing clean circulation, better furniture scale and carpentry that supports rather than dominates the rooms against the actual floor plan, site condition and household routines. Because existing conditions, structural limits and ageing services can affect what is feasible, those constraints should be understood before the visual scheme becomes fixed.
4I
Line icon of a floor plan with circulation arrows, a sofa and a plant.
Make every route through the home count for the 4I
Test the circulation of the 4I against the goal of using the proportions of an improved four-room flat to create more generous everyday shared space. Door swings, furniture clearances and the route between high-use spaces should support that idea before any built-in is drawn in detail.
Line icon of a wardrobe and storage drawers beside a plant.
Store more without closing the room in for the 4I
Let storage in the 4I reinforce clean circulation, better furniture scale and carpentry that supports rather than dominates the rooms. Concentrate capacity where it removes daily clutter, and avoid using carpentry simply to fill blank walls that could otherwise keep the home visually open.
Line icon of a dining table beneath a pendant light and air conditioner.
Let services support the design for the 4I
Coordinate lighting and services in the 4I around clean circulation, better furniture scale and carpentry that supports rather than dominates the rooms. Power points, switching, air-conditioning and task lighting should be resolved with the furniture plan so practical requirements do not appear as afterthoughts.
Line icon of wood, stone and terrazzo material samples.
Balance tactility with easy maintenance for the 4I
Choose materials for the 4I that can handle Singapore humidity, cleaning and regular use while supporting using the proportions of an improved four-room flat to create more generous everyday shared space. The palette should become quieter as the plan becomes stronger, not rely on more finishes to create interest.
Design INSPIRATION

Make Better Use of Space in a 4I

Use design references to explore clean circulation, better furniture scale and carpentry that supports rather than dominates the rooms. For a 4I, the strongest ideas are the ones that support using the proportions of an improved four-room flat to create more generous everyday shared space, while still leaving enough flexibility for furniture, storage and routines to evolve after move-in. The result should feel specific to this home, not copied from a generic style board.
Resolve the practical questions first in a 4I

Before detailing the 4I, turn the household brief into specific decisions. The planning should test clean circulation, better furniture scale and carpentry that supports rather than dominates the rooms, then check the proposal against HDB renovation requirements and the unit's actual condition. This sequence is especially important here because the project is trying to achieve using the proportions of an improved four-room flat to create more generous everyday shared space.

0
7
pl
Years of Architectural Excellence
  • Confirm HDB renovation requirements that apply to the proposed 4I works
  • Map furniture and circulation around the actual 4I floor plan
  • Prioritise better circulation, storage and daylight before adding decorative features
  • Coordinate existing conditions, structural limits and ageing services before carpentry and ceiling work are finalised
  • Set the renovation scope against the household's storage, cooking and daily routines
Smiling woman with a brown blazer and jewelry standing indoors with blurred people in background.
CLEAR FROM THE START
We explain the design, scope, quotation and next steps clearly before work begins.
DESIGNED AROUND YOU
Your layout, routines, preferences and priorities guide the design instead of a fixed house style.
INVOLVED THROUGHOUT
Your project is managed by people who understand both the design intent and what needs to happen on site.

Where to spend first on a 4I

Layout, hacking and core works in a 4I

Protect the work that establishes using the proportions of an improved four-room flat to create more generous everyday shared space. In the 4I, layout changes and anything affected by existing conditions, structural limits and ageing services should be priced before decorative upgrades because these decisions are far harder to revisit after completion.

Kitchen function before finishes in a 4I

Shape the kitchen in the 4I around actual cooking frequency, appliance needs and storage habits. The kitchen should support clean circulation, better furniture scale and carpentry that supports rather than dominates the rooms rather than becoming a fixed block of cabinetry that competes with the wider plan.

Storage with a clear purpose in a 4I

Use bespoke carpentry in the 4I only where it helps achieve using the proportions of an improved four-room flat to create more generous everyday shared space. Storage should support the household's real belongings and routines, while loose furniture is retained wherever flexibility is more valuable than another built-in.

Power and lighting that match the plan in a 4I

Set lighting, sockets, data and switching around the final furniture plan for the 4I. This is especially useful when the concept relies on clean circulation, better furniture scale and carpentry that supports rather than dominates the rooms, because poorly placed services can quickly undermine an otherwise clear layout.

Bathrooms built for long-term use in a 4I

Keep waterproofing, plumbing, ventilation and easy-clean finishes protected within the 4I budget. Durable wet areas support the wider aim of using the proportions of an improved four-room flat to create more generous everyday shared space by reducing maintenance problems that can disrupt the home later.

Designer comparing wood and stone finish samples on a table.

Explore interior design by space

Start with the room you are thinking about now. Each guide explores planning considerations, renovation possibilities, materials, storage and design ideas for that specific part of a Singapore home.
HDB BTO interior design icon - Luxior Concept Singapore home renovation
Living & Hosting Spaces
Planning your living room, dining area or entertaining space? Luxior Concept designs shared spaces for Singapore homes around comfortable circulation, practical storage and the way your household relaxes, hosts and spends time together.
PLAN MY LIVING SPACES
PLAN MY LIVING SPACES
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HDB BTO interior design icon - Luxior Concept Singapore home renovation
Kitchens & Utility Spaces
Planning a kitchen renovation in Singapore? We coordinate cooking flow, appliances, storage, ventilation and easy-maintenance finishes across kitchens, pantries, service yards and laundry areas to make everyday household work more efficient.
PLAN MY KITCHEN
PLAN MY KITCHEN
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HDB BTO interior design icon - Luxior Concept Singapore home renovation
Bedrooms & Storage Spaces
Create bedrooms and storage spaces that feel calm without sacrificing function. We plan wardrobes, lighting, furniture clearances and flexible storage around rest, dressing and the changing needs of Singapore households.
PLAN MY LIVING ROOM
PLAN MY LIVING ROOM
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HDB BTO interior design icon - Luxior Concept Singapore home renovation
Work & Flexible Spaces
Need a home office, study or adaptable spare room? We design flexible spaces with suitable lighting, power, storage and acoustic comfort so the room can support work today and different household needs tomorrow.
PLAN MY FLEXIBLE SPACE
PLAN MY FLEXIBLE SPACE
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HDB BTO interior design icon - Luxior Concept Singapore home renovation
Wellness & Lifestyle Spaces
Design a personal space around the routines that help you feel at home. From bathrooms and home gyms to reading, music and meditation rooms, every detail is planned around comfort, privacy and practical daily use.
PLAN MY LIFESTYLE SPACE
PLAN MY LIFESTYLE SPACE
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OUR FEATURED PROJECTS

From minimalist residences to complex urban landscapes, discover how we shape spaces that inspire, function, and stand the test of time.
HDB Resale
Modern Luxe - 227B Bartley Walk
Modern Luxe - 227B Bartley Walk
Singapore Residence
HDB Resale
Contemporary Eclectic - 328C Yishun Ave 6
Contemporary Eclectic - 328C Yishun Ave 6
Singapore Residence
What Could Your Renovation Cost?
Choose your property type, rooms and level of work to build an initial renovation estimate for your Singapore home.
Takes about 3 minutes · No obligation
CALCULATE MY RENOVATION
CALCULATE MY RENOVATION

General Questions

These Dual-Key renovation questions cover privacy between living zones, acoustic separation, budgeting, approvals and the planning decisions that shape everyday use.
How much does a 4I renovation cost in Singapore?
A realistic 4I renovation budget depends on the unit condition, floor area, hacking, wet works, carpentry and material specification. A useful early planning reference in this collection is $65,000-$140,000+ · 8-12 weeks. The final figure should only be set after the floor plan and scope are defined, because two 4I homes can require very different levels of work.

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How long does a 4I renovation usually take?
The programme for a 4I depends on approvals, design sign-off, material lead times and how much custom work is involved. The current planning reference shown for this property type is 8-12 weeks. Allow time before site work for drawings, selections and coordination so the renovation is not rushed into construction.

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What should I prioritise when renovating a 4I?
For a 4I, start with better circulation, storage and daylight. Then review storage, kitchen and bathroom function, lighting and furniture scale as one connected plan. These choices affect daily comfort more than isolated decorative features, so they should be resolved before the material palette becomes too fixed.

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What approvals are needed for a 4I renovation?
Approval requirements for a 4I depend on the proposed works. Review HDB renovation requirements before confirming hacking, structural changes, wet works, external alterations or service modifications. The safest approach is to identify approval-sensitive items during design, not after the contractor is ready to start.

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Can Luxior Concept review my 4I floor plan first?
Yes. For a 4I, start by sharing the floor plan and explaining what is difficult about the current layout. It is also useful to describe the household routines that relate to using the proportions of an improved four-room flat to create more generous everyday shared space. Add your preferred style, budget range and target timing, and Luxior Concept can identify the first planning decisions worth resolving before a full scope is confirmed.

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Still Have Questions?
We’re Here to Help.
Our team is ready to provide personalized support and guide you through every step of your real estate journey.
Address:
1 Kampong Ampat, #08-12
OneKA @ Macpherson,
Singapore 368314
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