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Interior Designers in Singapore: 593 interior designers · 3-room BTO typically S$36,100–S$43,700 per flat

Updated October 2026How we rank
Most HDB interior design firms in Singapore are design-and-build: they design, then subcontract the works. Since 2025 data puts 4-room HDB renovations at about $51,000–$80,000, choose a firm that is HDB-registered (DRC) for the building works and, ideally, CaseTrust-accredited so your deposit is capped at 20% and bonded.

12 of the best-documented interior designers in Singapore

Businesses with the most complete public records first, photos, licence matches, hours and track record. Never ordered by payment.

Unimax Creative

Unimax Creative

Novena

24+ years in business

12 min walk from Novena MRT

Singapore Interior

Singapore Interior

Geylang

20+ years in business

4 min walk from Aljunied MRT

Meng Design & Build

Meng Design & Build

Clementi

46+ years in business

14 min walk from Clementi MRT

Hong Lee Building Materials

Hong Lee Building Materials

Hougang

38+ years in business

15 min walk from Hougang MRT

ID21

ID21

Singapore River

27+ years in business

1 min walk from Great World MRT

Square Room Interior Design

Square Room Interior Design

Novena

23+ years in business

9 min walk from Toa Payoh MRT

Simple Closet (S) Pte. Ltd.

Simple Closet (S) Pte. Ltd.

Sembawang

17+ years in business

17 min walk from Sembawang MRT

Grandwork Interior

Grandwork Interior

Serangoon

30+ years in business

23 min walk from Ang Mo Kio MRT

Valencia Design Pte. Ltd.

Valencia Design Pte. Ltd.

Geylang

23+ years in business

8 min walk from Geylang Bahru MRT

Designscale pte ltd

Designscale pte ltd

Bukit Merah

21+ years in business

13 min walk from Queenstown MRT

LS2 Design and Construction

LS2 Design and Construction

Bishan

22+ years in business

2 min walk from Marymount MRT

Acoustics Wall System

Acoustics Wall System

Bedok

21+ years in business

5 min walk from Kaki Bukit MRT

Ordered by verifiable signals, licence matches, track record and completeness of public records. Featured placements are labelled and never change this order.

Show all 593

Compare 8 interior designers side by side

Location, MRT walk, years in business, licence and published hours, facts from public records.

How much do interior designers charge in Singapore?

Total renovation budgets for projects handled by interior design firms in 2025 (Qanvast data). Design fees are usually built into the package rather than charged separately.

  • 3-room BTO

    S$36,100–S$43,700 per flat

    Indicative; small sample

  • 4-room BTO

    S$51,000–S$61,800 per flat

  • 5-room BTO

    S$67,000–S$82,400 per flat

  • 4-room resale

    S$64,300–S$80,300 per flat

  • 5-room resale

    S$84,300–S$97,000 per flat

  • Custom carpentry, kitchen cabinets

    S$180–S$360 per foot run

    Laminate finish; veneer or spray paint costs more

Sources: Qanvast: How much is a 3, 4 and 5-room HDB renovation in 2025? (15 Jan 2025); SmartCalculator.sg: Carpentry cost Singapore (2026). Prices in SGD, before GST unless stated.

What licence should an interior designer have?

  • Directory of Renovation Contractors (DRC)

    Housing & Development Board (HDB) · Required by law

    The firm (or the contractor it uses) must be DRC-listed to carry out renovation works in an HDB flat. Interior design itself is not licensed, but the building works are.

    Check the official register

  • CaseTrust accreditation for renovation businesses

    Consumers Association of Singapore (CASE) · Optional accreditation

    Deposit capped at 20% and protected by a performance bond, standard renovation contract, milestone payments and a minimum 12-month workmanship warranty.

    Check the official register

How to choose a interior designer

  • Shortlist by portfolio of completed (not 3D-rendered) homes of your flat type and age, and ask to speak to a past client.
  • Ask for an itemised quotation with quantities, materials and brands; compare it with at least two other firms using the same brief.
  • Clarify whether the design fee is separate or bundled, and how many revisions of drawings are included.
  • Check the firm's CaseTrust status and HDB DRC listing, and who will be the site supervisor day to day.
  • Agree on a timeline with handover date, and how delays caused by the firm are handled.

Red flags

  • Large 'package' discounts that disappear once the quotation is itemised.
  • Portfolio made up mostly of 3D renders rather than completed homes.
  • Requests for a big upfront deposit before drawings are finalised.
  • Reluctance to put verbal promises (materials, timelines, warranty) into the contract.

Questions to ask before you book

  • Is your firm CaseTrust-accredited and listed in HDB's Directory of Renovation Contractors?
  • Which works do you do in-house and which are subcontracted?
  • What is your payment schedule, and what deposit do you require?
  • Who is my project manager, and how will progress be reported?
  • What warranty do you give for carpentry, waterproofing and electrical works?

Questions about interior designers in Singapore

Should I hire an interior designer or a contractor directly?

An interior design firm handles design, drawings, coordination and supervision, which suits owners with little time or complex layouts. Going to a contractor directly is usually cheaper but you manage the design and the trades yourself. Either way, the firm doing building works in an HDB flat must be in HDB's Directory of Renovation Contractors.

How much does interior design cost for a 4-room HDB?

Qanvast's 2025 data puts total renovation costs for a 4-room BTO at about $51,000–$61,800 and a 4-room resale flat at about $64,300–$80,300. Most Singapore ID firms bundle the design fee into the renovation quote. Carpentry is often the largest line item, at roughly $180–$360 per foot run for laminate kitchen cabinets.

How do I avoid interior design deposit scams?

Keep the initial deposit low and tie later payments to completed milestones. CaseTrust-accredited firms cap initial deposits at 20% of the total and must buy a deposit performance bond that protects it if the business closes. Check the firm on CASE's accredited list and on HDB's renovation contractor directory before signing.

Is RenoTrust the same as CaseTrust?

We could not find an official scheme called RenoTrust. The recognised consumer scheme for renovation firms is CASE's CaseTrust accreditation for renovation businesses, including a joint CaseTrust–RCMA scheme for members of the Singapore Renovation Contractors and Material Suppliers Association. Verify any claimed accreditation on CASE's list of accredited businesses.

How many interior designers are there in Singapore?

Lookup lists 593 interior designers in Singapore as of October 2026, with the largest concentration in Geylang (140). Listings are compiled from government registers and open map data and refreshed regularly.