9 Best Commercial Interior Design Firms in Singapore (August 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.

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.

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.