The Answer in 60 Seconds

A Singapore interior design firm typically needs the following, with CaseTrust optional: CaseTrust Renovation accreditation (a voluntary scheme run by CASE, with a joint version for members of the Singapore Renovation Contractors and Material Suppliers Association (RCMA)) including the associated Deposit Performance Bond if accepting customer deposits, Professional Indemnity for design and consultancy work (the limit set against project values and any limit client contracts require), Public Liability for site visits and showroom, work injury compensation insurance for the employees the Work Injury Compensation Act 2019 requires it for (all employees doing manual work, and non-manual employees such as designers, draftsmen and admin staff whose salary, not counting overtime, bonuses, the annual wage supplement, incentive payments and allowances, is S$2,600 a month or less), Contractors All Risks (CAR) for renovation works (typically the contractor's responsibility but verify scope), Property/Fire for office/showroom fit-out, and Cyber for client data and design IP. Firms that also act as renovation contractors (combined ID/contractor model) need contractor-side liability cover, a listing in HDB's Directory of Renovation Contractors to renovate HDB flats, and BCA Contractors Registration System registration if they hire construction S Pass or Work Permit holders or tender for public-sector construction work. Registration baseline: business registration with ACRA, and a listing in HDB's Directory of Renovation Contractors before carrying out renovations in HDB flats. CaseTrust is a voluntary accreditation, not a licence.

The Sourced Detail

Interior design firms in Singapore operate across two distinct business models that affect the insurance build:

Model A: Pure design - design services only, with renovation works subcontracted to or directly engaged by the client. Lower physical-works exposure; PI is primary.

Model B: Combined design + renovation contractor - firm provides design and manages/executes renovation works. Significant physical-works exposure; multiple liability lines engaged.

The CaseTrust renovation accreditation and HDB's contractor listing are aimed at firms that carry out renovation work.

The CaseTrust Renovation framework

Per the CaseTrust Accreditation for Renovation Businesses, this is a voluntary accreditation run by CASE (Consumers Association of Singapore). CASE has two renovation schemes: CaseTrust for Renovation Businesses, and the CaseTrust-RCMA Joint Accreditation Scheme, developed with the Singapore Renovation Contractors and Material Suppliers Association (RCMA) for its members. The scheme:

  • Provides consumer protection for renovation deposits
  • Requires accredited firms to maintain a Deposit Performance Bond
  • Imposes business practices standards (transparent pricing, written contracts, dispute resolution)
  • Lets accredited firms display the CaseTrust logo on their shopfronts and marketing materials

Deposit Performance Bond: The bond protects customer deposits against firm failure (insolvency, business closure). It is taken out deposit by deposit: CASE says each customer receives a proof of protection showing their details and the protected sum, and calls it an insurance bond, arranged through CaseTrust's appointed insurance broker.

CaseTrust-RCMA accreditation is the joint version of the scheme, open to members of RCMA; non-members apply for CaseTrust for Renovation Businesses. See how it differs from CaseTrust alone.

HDB renovation considerations

For renovation work in HDB flats:

  • Only contractors listed in HDB's Directory of Renovation Contractors (DRC) may carry out renovations in HDB flats (Rule 6 of the Housing and Development (Renovation Control) Rules 2006, with a fine of up to S$5,000)
  • The HDB Directory of Renovation Contractors lists registered firms
  • Renovation permits required for specific work types
  • Regulations on demolition, structural changes, hacking, plumbing/electrical alterations

An ID firm must be listed in HDB's DRC before it carries out renovations in HDB flats itself; otherwise the works are carried out by a DRC-listed contractor. The compliance dimension overlaps with insurance underwriting.

Stage-by-stage insurance build

Pre-launch:

  • Confirm ACRA business registration
  • Decide on Model A vs Model B
  • Apply for CaseTrust Renovation accreditation (recommended early - process takes time)
  • For Model B: Apply for HDB Renovation Contractor registration
  • For Model B: Register under the BCA Contractors Registration System before hiring construction S Pass or Work Permit holders (required since 1 June 2025) or tendering for public-sector construction work

Year 1 (small firm, 1-5 staff):

  • CaseTrust accreditation + Deposit Performance Bond
  • Professional Indemnity
  • Public Liability
  • Work injury compensation insurance for the employees the Work Injury Compensation Act 2019 requires it for (all employees doing manual work, and non-manual employees whose salary, not counting overtime, bonuses, the annual wage supplement, incentive payments and allowances, is S$2,600 a month or less)
  • Property/Fire for office/showroom
  • Group Medical / Group PA for staff
  • Cyber Liability
  • For Model B: Contractors All Risks for active projects
  • For Model B: Possibly Performance Bond on individual contracts

Years 2-5:

  • Higher PI limits as project values scale
  • D&O for incorporated structures
  • EPL as headcount grows
  • Specialist extensions

Mature firm:

  • Comprehensive programme
  • Multiple project specific covers
  • Possibly Trade Credit if extending credit to commercial clients

The Professional Indemnity layer

What ID firm PI covers:

  • Design errors causing client loss
  • Project specification errors
  • Failure to identify code/regulatory issues affecting design
  • Negligent advice on materials, finishes, suppliers
  • Defamation arising from professional engagement
  • Loss of documents

What PI typically doesn't cover:

  • Bodily injury (PL or WICA)
  • Property damage from physical works (CAR or PL)
  • Failure to deliver as breach of contract distinct from negligence
  • Intentional misconduct
  • Specific carve-outs per wording

Limit considerations:

  • Set the PI limit against the value of the projects you design and any limit your client contracts require

Claims-made structure: PI is claims-made and notified. Retroactive date matters - see how it can leave past work uncovered. The retroactive date is the one stated in the policy schedule; keep it continuous if switching insurers.

The physical works layer (Model B)

Contractors All Risks (CAR):

  • Covers physical damage to the works during construction
  • Can cover accidental damage to the client's existing property during works, where the policy is extended to include it
  • Project-specific or annual programme

Public Liability for site work:

  • Third-party injury at site (worker, visitor, neighbour)
  • Damage to neighbouring property (water leak, fire spread, structural impact)

Performance Bond:

  • Customer protection for project completion
  • Required by some commercial clients
  • May overlap with CaseTrust Deposit Performance Bond

Workmen's Compensation / WICA:

  • For employed workers on site
  • For subcontractor workers, the subcontractor is the employer, but under section 13 of the Work Injury Compensation Act 2019 the Commissioner may direct the principal to pay compensation to a subcontractor's employee injured where the principal has undertaken the work, with a right to be indemnified by the subcontractor
  • Verify subcontractor insurance before site mobilisation

Insurance verification of subcontractors: For Model B firms engaging subcontractors:

  • Each subcontractor should have own WICA, PL, possibly CAR
  • Certificates of Insurance verified before mobilisation
  • "Indemnity to Principal" extension (see what it does and does not cover) on subcontractor's PL

Cyber considerations for ID firms

Interior design firms hold:

  • Client personal information (contact, address, lifestyle preferences)
  • Property floor plans and security details
  • Photographs of client homes
  • Payment records (deposits, progress payments)
  • Design IP (proprietary specifications, materials sourcing, supplier relationships)

PDPA exposure on client data; commercial exposure on design IP and supplier relationships.

For residential ID firms specifically, the photographs and floor plans of client homes (especially high-net-worth clients) have privacy and security sensitivity. Cyber Liability with appropriate limits and panel response infrastructure addresses this.

Property and showroom

ID firms typically operate from:

  • Office only (Model A - pure design)
  • Office with small showroom
  • Larger showroom + office (more common for established firms)

Property cover:

  • Building/lease structural cover (typically landlord's responsibility)
  • Tenant improvements and fit-out (firm's responsibility)
  • Showroom samples, displays, materials
  • Equipment (computers, design software, plotters, samples)
  • Stock of materials if any

Sums insured can be set at reinstatement value and depend on showroom scale.

Specific project-related considerations

Material defects and product issues:

  • Defective products supplied/specified by firm - Product Liability angle
  • Manufacturer warranties as primary coverage
  • ID firm's exposure typically limited to negligent specification

Schedule and completion exposure:

  • Delays causing client loss
  • Performance bond response if covered
  • Liquidated damages clauses in contracts
  • Generally not insurable; commercial risk

Variation and scope creep disputes:

  • Common ID firm dispute area
  • Documentation discipline matters
  • Generally not insurable; commercial risk

Designer-contractor coordination disputes:

  • Where ID firm designs and another contractor executes
  • Defects allocation between design and execution
  • PI vs CAR boundary issues
  • Documentation of design specs vs as-built variations

Premium considerations

For a typical Singapore interior design firm:

Small firm (1-5 staff, residential focus, Model A or B):

  • CaseTrust Deposit Performance Bond: per scheme calculation
  • Premium for each line depends on project values, headcount, the limits chosen and claims history, so price it on your own figures

Mid-size firm (5-15 staff, mix of residential and commercial):

  • Premium for each line depends on project values, headcount, the limits chosen and claims history, so price it on your own figures

Larger firm:

  • Comprehensive programme
  • Per-project cover for major commercial work
  • Total varies materially with project mix

Specific scenarios

Scenario A: HDB residential renovation, ID firm as designer + contractor

  • CaseTrust + Deposit Performance Bond
  • PI for design
  • CAR for the works
  • Public Liability
  • Work injury compensation insurance for own staff where the Act requires it (all manual workers, and non-manual staff whose salary, not counting overtime, bonuses, the annual wage supplement, incentive payments and allowances, is S$2,600 a month or less, unless an excluded class applies); verify subcontractor WICA
  • HDB renovation registration

Scenario B: Commercial office fit-out (Model B)

  • Higher PI limits (project value scales)
  • Larger CAR scope
  • Possibly Performance Bond required by client
  • BCA CRS registration if the firm hires construction S Pass or Work Permit holders or tenders for public-sector construction work
  • PI/CAR coordination on defect allocation

Scenario C: Pure design consultancy (Model A) for high-net-worth residential

  • High PI limits (project values can be substantial)
  • Cyber for client data sensitivity
  • Limited physical works exposure
  • CaseTrust if accepting deposits

Scenario D: Commercial design with overseas project execution

  • Cross-border PI scope
  • Possibly local insurance in execution country
  • Specialised broker engagement

Common Mistakes / What Goes Wrong

  1. Operating without CaseTrust accreditation when accepting deposits. Consumer trust gap; competitive disadvantage.
  2. PI limits set too low for typical project values. Single design error claim can exceed limits.
  3. No CAR for combined design+contractor model. Physical works damage uninsured.
  4. Subcontractor insurance not verified. Cascade liability if subcontractor is uninsured.
  5. No Cyber for client data and floor plans. PDPA exposure and HNW client privacy concerns.
  6. At lawyer-style PI structure (firm-level only), missing individual designer cover. Design Director departures may leave coverage gaps.
  7. No performance bond strategy. Customer deposits at risk; CaseTrust may not cover all amounts.
  8. HDB DRC listing or BCA CRS registration overlooked. Renovating HDB flats without a DRC listing is an offence with a fine of up to S$5,000, and since 1 June 2025 a firm must register with the CRS before hiring construction S Pass or Work Permit holders.

What This Means for Your Business

For Singapore interior design firms, the insurance build reflects the dual nature of the business - professional service plus physical works. The discipline:

  1. Make the model choice deliberately. Pure design vs combined design+contractor has different insurance, regulatory, and commercial implications.

  2. Pursue CaseTrust early. The accreditation process takes time; deposits without protection mean both consumer trust gap and potential gap in coverage if the firm has issues.

  3. Match PI limits to project values. Set the limit against the value of the projects you design and any limit your client contracts require.

  4. Coordinate PI / CAR / PL. Each addresses a different exposure; gaps appear at the boundaries.

  5. Verify subcontractor insurance. Every subcontractor mobilising on a project should have current WICA and PL; check certificates.

  6. Maintain documentation discipline. Design specs, change orders, client sign-offs, photographs - all support both quality assurance and claim defence.

  7. Plan for scaling. Project values, headcount, and geographic scope all drive insurance requirements.

Operating with appropriate insurance and CaseTrust accreditation is competitive positioning; CaseTrust itself is voluntary, while work injury compensation insurance is compulsory for employees doing manual work and for non-manual employees whose salary, not counting overtime, bonuses, the annual wage supplement, incentive payments and allowances, is S$2,600 a month or less.

Questions to Ask Your Adviser

  1. For my project mix and typical contract values, what PI limit is appropriate?
  2. Should I have annual CAR cover or per-project cover, given my pipeline?
  3. How does my CaseTrust Deposit Performance Bond requirement interact with my other insurance?
  4. For combined design+contractor model, how do I structure subcontractor insurance verification?
  5. As my firm scales (more staff, larger projects, possibly commercial work), what insurance changes should I plan for?

Related Information

Published 4 May 2026. Source verified 4 May 2026.