9 Best Commercial Interior Design Firms in Singapore (2026)

Before the list, the checks that matter most for a commercial space. Start with builder registration: the firm building your fit-out should hold the appropriate BCA registration or builder licence for the works involved, particularly for interior decoration and finishing or general building works. This is a genuine quality and compliance signal, not a formality.

Next, approvals. A commercial fit-out typically needs a BCA permit, SCDF fire-safety approval for any changes affecting fire protection or means of escape, and sign-off from the building management or landlord. The good firms handle these submissions in-house and build the approval time into the schedule. Ask exactly who manages them, because if the answer is vague, that risk lands on you.

Then judge them on commercial fit. Look for a real portfolio in your space type, office, retail, F&B or clinic, because a great office designer is not automatically a great restaurant designer. Look for MEP coordination capability, since air-conditioning, electrical and data are where commercial projects get complicated. And look for speed and project management, because in commercial work every extra week is rent on an empty space. Transparent cost-per-square-foot budgeting is the final tell of a firm that knows this market.

Delco is the firm I would lead with for serious commercial work, because it carries the hardest credential on this list: a BCA CR06 licence at the top interior-works grade, verifiable in the BCA directory, alongside a full set of ISO certifications for quality, environment and safety. In business since 2001 with more than a thousand projects across office, retail and F&B, it has the depth few can match.

It also runs its own in-house carpentry and joinery workshop, which gives it real control over fabrication quality and timelines, a meaningful advantage on a fit-out. For a business that wants a properly credentialled main contractor with breadth across commercial space types, Delco is my top pick.

Website: delcoart.com.sg
Location: 1079 Eunos Avenue 7, Eunos Industrial Estate
Reviews: BCA CR06 Grade L5, ISO 9001/14001/45001, since 2001
Best known for: Top-grade BCA interior-works licence with in-house joinery

OSCA is a dedicated commercial and corporate office specialist with no residential distraction, which shows in the focus of its work. It has delivered for more than five hundred MNC and local companies across Singapore and the region, and positions itself around turnkey office design-and-build, project management and design consultancy under one roof.

It references BCA Green Mark and sustainability in its fit-outs, which increasingly matters to corporate tenants and their own ESG commitments. For a company that wants an office specialist used to working with MNCs and regional rollouts, OSCA is a strong, focused choice. As with most office-only firms, it is not a Qanvast-rated business, so judge it on portfolio and client list rather than a star score.

Website: osca.asia
Location: 12 Kallang Avenue, Aperia
Reviews: 500+ corporate clients, regional delivery
Best known for: Turnkey corporate office design-and-build for MNCs

Sennex is a pure workplace design-and-build consultancy with a people-centred, data-driven approach, and a project count north of eight hundred across Asia and the Middle East. What sets it apart is technical range: alongside offices, it handles laboratory design-and-build, which is services-heavy and demands real engineering discipline, a good sign for any complex commercial project.

It holds bizSAFE STAR and ISO 45001 for safety, and works end-to-end from workplace strategy through design, compliance and fit-out. For a corporate or institutional client who wants a strategy-led workplace partner rather than just a contractor, Sennex is an excellent option.

Website: sennexconsultants.com
Location: 315 Outram Road, Tan Boon Liat Building
Reviews: 800+ projects, bizSAFE STAR and ISO 45001
Best known for: Strategy-led workplace and laboratory design-and-build

ADM positions itself as an integrated total-solutions provider for corporate office fit-out, with in-house design, project management and construction teams. Its client list does a lot of the talking: it has delivered for names like Cartier and the Singapore Symphony Group, including a documented office project delivered on budget and schedule, which is exactly the reassurance a corporate client is looking for.

The in-house model means fewer handoffs and clearer accountability across the design-to-build journey. For a company that wants a single accountable team for a polished corporate workspace, ADM is a credible, well-regarded choice.

Website: admdesign.com.sg
Location: 62 Ubi Road 1, #07-14 Oxley Bizhub 2
Reviews: Blue-chip corporate clients, integrated in-house teams
Best known for: Turnkey corporate office fit-out with single-team accountability

Constructivity is a British-run office-interior and carpentry contractor with over a decade in the market and more than five hundred completed projects. Its standout is process: it explicitly manages BCA permit submissions, building-management approvals and fire-safety compliance in-house, which takes a genuine headache off a tenant's plate.

Its own carpentry capability adds control over finishes and joinery. It focuses on the CBD and central business districts, so it knows the landlord and building-management landscape there well. For a company fitting out in the city centre that wants the approvals handled properly, Constructivity is a dependable pick.

Website: constructivity.com.sg
Location: Central business district focus
Reviews: 500+ projects, handles BCA and landlord submissions
Best known for: CBD office fit-outs with in-house approvals management

ISH Interior brings genuine cross-typology commercial range and regional reach, delivering for MNC offices across Singapore, Thailand, Korea and Malaysia. Its portfolio spans corporate headquarters, logistics hubs, dental clinics, casual-dining F&B and retail front-of-house, which makes it a strong option for businesses that need more than a standard office fit-out.

It is listed as a registered contractor in the BCA directory, and its regional footprint suits companies expanding across Southeast Asia that want one design partner across markets. For varied or multi-market commercial work, ISH is worth shortlisting.

Website: ish.com.sg
Location: 7B Crane Road
Reviews: BCA-registered contractor, regional delivery
Best known for: Cross-typology commercial work across Southeast Asia

Space Atelier is the crossover pick: primarily known for residential, but with a genuine commercial arm covering office and retail, and, importantly, a BCA Licensed General Builder status that many pure-ID firms lack. It is also one of the few firms here with a strong, review-verified reputation, holding a long Qanvast SuperTrust run.

The residential polish carries into its commercial work, which suits design-forward offices, showrooms and boutique retail. If you are a business owner who also wants your home done, or you want a designer's eye on a client-facing commercial space, Space Atelier bridges both worlds well.

Website: spaceatelier.com.sg
Location: 6 Harper Road, #05-07 Leong Huat Building
Reviews: 4.69 on Qanvast (390+ reviews), BCA Licensed General Builder
Best known for: Design-forward commercial work with a builder licence

Office Empire does one thing and has done it since 2007: offices. That single-minded focus covers the full lifecycle, design, build, reinstatement, furniture and aftercare, as a one-stop service, which suits companies that want the whole office journey handled by a specialist rather than pieced together.

Its reinstatement capability is a genuine differentiator, because returning a leased office to its original state at lease-end is a real obligation many tenants forget to plan for. Registered with BCA and described as a Class 2 qualified builder, with operations in Singapore, Malaysia and Guangzhou, it is a solid office-only choice.

Website: office-empire.com
Location: 8 Admiralty Street, Admirax
Reviews: Office-only since 2007, BCA-registered builder
Best known for: Full-lifecycle office fit-out including reinstatement

Xponent pairs commercial interior design with exhibition and event build, which makes it a natural fit for showrooms, galleries, brand spaces and client-facing retail where the space itself is part of the marketing. That experiential edge sets it apart from firms that only do conventional offices.

It is also refreshingly transparent about cost, publishing office fit-out bands from basic through mid-range to premium, which is genuinely useful when you are budgeting. For a brand-led or retail-facing commercial project that needs more than a standard office, Xponent is a distinctive, worthwhile option.

Website: xponent.com.sg
Location: Ang Mo Kio Industrial Park 2A, AMK Tech II
Reviews: Commercial plus exhibition and event build
Best known for: Brand-led retail, showroom and experiential commercial spaces

Commercial work is priced per square foot, and the number swings with the space type and the specification. Offices are the baseline, retail costs more for its finishes and shopfront, and F&B is the most expensive because of kitchens, extraction and heavy services. Here are the ballpark 2026 ranges I would budget for, covering construction and fit-out.

On top of the fit-out, budget for mechanical and electrical works, furniture, and any reinstatement obligation at lease-end. Get an itemised, per-square-foot quote so you can compare firms on a like-for-like basis rather than a single lump sum.

Here is the shortlist in one view, by what each firm does best for a commercial space.

No firm paid to be on this list. Most commercial fit-out specialists are not on consumer review platforms, so I judged them on portfolio depth, verifiable BCA registration and builder grade, project counts and named corporate clients rather than star ratings, and I flagged where a credential is self-published versus directory-confirmed. Details were accurate when I wrote this but they move, so confirm licensing and scope directly before you engage anyone. I update the list when my view changes.

Most commercial fit-outs need a BCA permit for the building works, SCDF fire-safety approval where the works affect fire protection or escape routes, and approval from the building management or landlord under the tenancy. Depending on the use, there can be further agency requirements, for example food-related licensing for F&B. A capable commercial firm manages these submissions for you and schedules around the approval timelines, which is one of the main reasons to hire a specialist rather than a general renovator.

A design-and-build firm handles both the design and the construction under one contract, giving you a single accountable party from concept to handover. A fit-out contractor executes a design that someone else, often a separate interior designer or architect, has already produced. Design-and-build is usually faster and simpler to manage for a straightforward office, while separating design from build can suit complex or design-critical projects where you want independent oversight. Most firms on this list offer design-and-build.

A typical office fit-out runs about 8 to 12 weeks of construction once the design is locked and approvals are in, but the full timeline including design, landlord and authority submissions is usually longer, often three to five months end to end. Larger or more complex spaces, and anything needing significant mechanical and electrical work, take longer. Because every week of delay is rent on an empty space, agree a realistic schedule with milestones and penalties up front.

For most commercial building works, the contractor should hold the appropriate BCA registration or licence for the type and value of works, for example the CR06 category for interior decoration and finishing. It protects you on quality and compliance and is often required for permit submissions. Always confirm a firm's BCA registration and grade in the official directory rather than taking a logo on a website at face value.