Interior Design & Renovation Experts in Singapore
Transforming Singapore Homes with Design Precision & Craftsmanship
At Cosmos Decor, we don’t just weave dreams, we build them.
As a leading interior design and renovation contractor in Singapore, we combine creative design expertise with hands-on craftsmanship from our private in-house carpentry and renovation workshop in Defu Industrial City.
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From HDBs and condos to landed homes, we deliver seamless, end-to-end renovation experiences that balance style, practicality, and value.
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Canberra Link
A standard 4-room Resale HDB layout into a warm, character-filled family home. The homeowners wanted a calm yet contemporary design that maximizes light and space which creating a relaxing retreat after a long day
The Clementi Peaks Residence
An open, contemporary living space that blends functionality and calm sophistication. The homeowners wanted a design that connects the kitchen, dining, and living areas seamlessly, perfect for both daily living and entertaining.
Our Design Philosophy —
Functional Elegance, Built to Last
Every home is a canvas.
At Cosmos Decor, design isn’t just about aesthetics — it’s about function, flow, and long-term comfort.
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Spatial Mastery: We reimagine compact BTOs and resale flats to maximize every square foot.
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Material Curation: We source durable, eco-friendly materials that thrive in Singapore’s tropical climate.
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Holistic Integration: From 3D visuals to site execution, what you see is what we build.
Why Choose Cosmos Decor for Interior Design & Renovation in Singapore?
Unlike traditional interior design firms or standalone renovation contractors, Cosmos Decor offers a one-stop solution — design, carpentry, and renovation all under one roof.
All-in-One Interior Design & Renovation
From space planning and concept design to fabrication and finishing touches, we manage every stage of your home renovation journey with in-house teams — no third-party outsourcing.
Tailored Design Solutions
Our experienced interior designers in Singapore craft bespoke concepts that reflect your lifestyle — whether it’s Modern Minimalist, Japandi, Industrial Chic, or Luxury Contemporary.
Direct Carpentry & Quality Control
Our Defu workshop houses skilled carpenters and renovation specialists who oversee every measurement, edge-band, and joinery detail — ensuring durability, precision, and consistency.
Transparent & Guaranteed Workmanship
We provide detailed timelines, clear quotations, and licensed electrical and plumbing contractors to ensure your renovation is HDB- and BCA-compliant. Every handover undergoes a final quality inspection.
Our Full Range of Interior Design + Renovation Services in Singapore
Whether you’re planning a small renovation or a full home makeover, our services cover every aspect of your space.
Interior Design & Space Planning
Every great renovation begins with a solid design foundation. Our design consultants will analyse your lifestyle, preferences, and budget — then craft 3D visuals so you can visualize your dream home before renovation begins.
Electrical Works & Rewiring
We handle rewiring, lighting layout, power points, and appliance setup — managed by licensed electrical contractors to ensure safety and compliance.
Plumbing & Sanitary Works
From bathroom renovation and toilet fittings to waterproofing and piping upgrades, our plumbing specialists deliver comfort and reliability.
Painting & Wall Finishes
We offer full-house painting, wallpaper, and feature-wall finishing using premium, eco-friendly paints for a healthier home environment.
False Ceiling & Lighting Design
From cove lighting to recessed ceilings, we craft ambient moods that elevate your interior aesthetics.
Custom Carpentry
Our in-house carpenters create custom wardrobes, kitchen cabinets, study tables, and feature walls that combine style, precision, and lasting quality.
Shaney May
3-room BTO in Woodlands
Reliable ID and Carpentry Services!
I had to redo my wardrobe due to a poor design by my previous interior designer. Even though it was just a wardrobe, Penny responded promptly and helped redesign, re-do it in a short timeline. The workmanship is excellent, price is reasonable and I'm really satisfied with both the quality and service. I only wish I had found your company sooner! :)
Phoebe Eu
4-room Condo in Tampines
A very professional and experienced team for any carpentry work. From designing from my request and ideas, to fabrication and installation, everything was detailed and over my expectation. We had discussed on the design and prompt decisions were made on improving the final drawings. Providing excellent communication, useful suggestions and effective solutions, Cosmo Decor will be the one stop you can rely and trust on, delivering the exceptional best results for your home. Thank you!
Ken Loo Wong
4-room HDB in Jurong
I’m truly very happy with the custom carpentry work done by cosmos decor . From the beginning, he took the time to understand what I wanted and gave honest, practical suggestions. You can really see the care and effort put into every detail of the work.
The workmanship is excellent, finishing is neat, and the final result turned out even better than I imagined. It’s rare to find someone who is so patient, responsible, and takes pride in his work.
Thank you for delivering such quality work and making the whole process stress-free. I would definitely recommend him to anyone looking for a reliable and skilled carpenter for custom work.
Frequently Asked Questions - Renovation
Contact Cosmos Decor Today
If you’re looking for a trusted interior design and renovation company in Singapore, Cosmos Decor is here to make your dream home a reality.
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With Cosmos Decor, you get design, renovation, and carpentry services all under one roof. Your renovation journey is smoother, faster, and stress-free.
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Call us to schedule a free consultation. To explore more renovation tips, please follow our Blog article.