Designing happy, enduring spaces across Singapore. Transparent BTO and resale packages backed by 15+ years of craft and an industry-leading 24-month warranty.
HDB Licensed
Compliant Works
SIDA 2023
Retail Winner
SME 500
Singapore Award
Entrepreneur
Industry Elite
Nippon Paint
Low Odour Tech
Blum Austria
Cabinet Joinery
Excel
Premium Fittings
Cosentino
Sintered Stone
Tailored renovation scopes engineered specifically for Singapore housing layouts. Every project is assigned dedicated support designers and site project managers to guarantee zero communication gaps.
Smart spatial optimization for 3-room, 4-room, and 5-room Built-To-Order flats. We eliminate cramped corridors and integrate space-saving platform storage.
Complete overhaul of vintage resale flats. We manage authorized partition hacking, Quicseal 104 waterproofing, floor screeding, and full rewiring.
Bespoke Modern Luxe and Japandi architecture for private developments. We seamlessly navigate MCST renovation guidelines and working curfews.
Award-winning commercial fit-outs reflecting your brand identity. Backed by our SIDA 2023 Retail Design winning commercial expertise.
Drag the interactive slider below to experience how our architectural team transformed a vintage, segmented HDB resale unit into an expansive, light-filled open-concept home.
Itemized pricing schedules published with exact scopes of work. Based on premium materials including Nippon Vinilex 5000, Quicseal 104 waterproofing membrane, and Blum cabinet fittings.
Full hacking, masonry, carpentry & quartz top
| 3-Room Flat | $13,788 |
| 4-Room Flat | $13,888 |
| 5-Room Flat | $13,988 |
| Executive Apt | $14,488 |
Full overhaul of kitchen plus two full bathrooms
| 3-Room Flat | $21,588 |
| 4-Room Flat | $22,188 |
| 5-Room Flat | $22,388 |
| Executive Apt | $22,688 |
Whole-flat vinyl flooring, wet works & painting
| 3-Room Flat | $25,988 |
| 4-Room Flat | $29,388 |
| 5-Room Flat | $30,488 |
| Executive Apt | $32,888 |
For flats with developer-supplied OCS flooring
| 2-Room Flat | $6,388 |
| 3-Room Flat | $6,788 |
| 4-Room Flat | $7,088 |
| 5-Room Flat | $7,388 |
Full 60x60cm tiling for Living, Dining & Bedrooms
| 2-Room Flat | $10,588 |
| 3-Room Flat | $12,888 |
| 4-Room Flat | $15,188 |
| 5-Room Flat | $16,988 |
Winner of the Singapore Interior Design Awards (SIDA 2023) for Retail Design. We believe you should touch, test, and experience your materials before committing.
Visit our physical design studio in Yishun to inspect true-to-scale living spaces, operational Blum soft-close joinery, Cosentino sintered stone slabs, and layered architectural lighting mockups.
Test real kitchen ergonomics, pull-out larders, and wardrobe configurations.
Compare quartz, sintered stone, vinyl planks, and fluted acoustic swatches in person.
Sit down with a senior designer to dissect hacking limits and structural load beams.
Our designers accompany you to trusted sanitary and lighting showrooms.
Demystifying the renovation journey from initial blueprint review to post-handover warranty support.
We analyze your HDB or condominium floor plan, identify structural boundaries, and formulate an itemized transparent quotation tailored to your timeline.
Photorealistic 3D visualisations bring your layout to life. We confirm laminate swatches, quartz counters, and accompany you for sanitary ware selection.
A dedicated support designer and on-site project manager oversee statutory HDB permits, contractor liaisons, Quicseal wet works, and bespoke carpentry.
Rigorous joint defect inspection before handover, whole-house chemical wash, and issuance of our industry-leading 24-month craftsmanship protection.
Explore authentic transformations across HDB estates, BTO precincts, and private residences from Yishun and Punggol to Pasir Ris.
Modern Luxe · HDB Resale
Complete kitchen overhaul with custom island, continuous 5mm vinyl flooring, custom platform bed, and quartz countertops.
Modern Luxe · Condominium
Polished marble-look porcelain finishes, bronze mirror wall cladding, integrated cove lighting, and bespoke media console.
Modern Luxe · HDB Flat
Dark wood veneers paired with fluted panel accents, stone-textured kitchen counters, and boutique hotel-grade master bedroom suite.
Japandi · Condominium
Organic wood finishes, wabi-sabi muted neutral textures, curved drywall corners, and seamlessly decluttered spatial flow.
Modern Farmhouse · BTO
Shaker-style cabinet profiles, warm organic timber tones, matte black vintage hardware handles, and cozy country-modern aesthetics.
Contemporary · Condominium
Clean architectural forms, monochromatic contrasts, custom open-concept bar counter, and integrated bedroom study nook.
Rated 4.9 ★ across 259 verified reviews. Real homeowners sharing their experience with our dedicated interior designers.
"We are extremely pleased with our decision to engage Cheryl for the renovation of our 5-room resale flat. From the beginning, she took the time to understand our design vision, budget, timeline and planned the project carefully while doing her best to meet our requirements. She was highly responsive, addressing our questions and concerns promptly and quickly coordinated the necessary arrangements whenever issues arose. We especially appreciated her careful selection of experienced contractors, which ensured high-quality workmanship and attention to detail throughout the renovation... Even after handover, she continued to follow up on outstanding items and provided excellent after-sales support."
"Jeff Wu from 21 Interior was truly a blessing in disguise. He played an incredible role in turning our vision into the dream home we had always imagined. His quick thinking, creativity, attention to detail, and honest feedback throughout the entire process gave us confidence that we were in good hands. Jeff was always approachable, responsive, and ready with practical solutions whenever challenges arose. We especially appreciated his sincerity—he was never afraid to give us his honest opinion while still respecting our ideas and preferences."
"We had a great experience working with 21 Interior Studio for our home renovation. Dillon, our interior designer, was incredibly responsive throughout the entire process always quick to reply and address any concerns we had. What really stood out was his strong coordination with the contractors, which made the whole renovation process much smoother and less stressful for us. Even when we had last-minute changes or new ideas, Dillon was very accommodating and adapted quickly without hesitation."
"After comparing and meeting 3-4 IDs, we decided to engage Jon from 21 Interior Studio as we could communicate well with him (very important!) He understood our budget & design requirements and provided practical suggestions on what can / cannot be done - which we really appreciate as first-time homeowners. He was also responsive and proactive in coordinating across the different contractors, ensuring the renovation works were completed on schedule."
"It's our first encounter with 21 interior Studio and their service is impeccable. We are lucky that Jeff who is in charge of our renovation has done a excellent job. Design ideas really match our needs and he follows up everything closely, I hardly need to worry and look out for the progress. Be frank the result exceeds our expectation and the price we pay. The flat now looks simple and cosy."
Upload your floor plan to receive a preliminary space layout and itemized cost estimation from our senior designers within 24 hours.
Essential facts about renovation timelines, licensing compliance, and material specifications in Singapore.
Experience our SIDA 2023 award-winning experiential showroom at North View Bizhub. Ample sheltered parking and direct lift access.
6 Yishun Industrial Street 1
#01-14 North View Bizhub
Singapore 768090
Monday – Saturday: 11:00 AM – 7:00 PM
Sunday & Public Holidays: Closed
Phone: (+65) 8802 2010
Email: hello@www.21interiorstudio.com.sg
Conveniently accessible via SLE / CTE (Yishun Ave 6). Sheltered level 1 visitor parking right in front of showroom #01-14. From Yishun MRT / Bus Interchange, take feeder bus 811.
