Interior Design Agreement (Singapore)

An Interior Design Agreement in Singapore records the terms the parties accept and the commitments each makes to the other.

HDB flat renovations — which account for approximately 80 percent of residential renovation projects in Singapore — must comply with HDB's renovation guidelines and the HDB Renovation Contractor Registration Scheme. Only contractors registered under the HDB Directory of Renovation Contractors may carry out renovation works in HDB flats, and the interior designer must coordinate with a registered contractor to obtain the required renovation permit from the HDB Branch Office before commencing works. Unauthorised renovations can result in reinstatement orders and fines under the Housing and Development Act.

For private residential properties — condominiums, landed houses, and apartments — the management corporation's by-laws under the Building Maintenance and Strata Management Act (Cap. 30C) regulate renovation hours, noise levels, and structural modifications. The Building Control Act requires a Professional Engineer (PE) registered with the Professional Engineers Board (PEB) to endorse structural alteration works, and a Qualified Person (QP) to submit plans to BCA for works involving load-bearing walls, floor slabs, or building services.

The Consumers Association of Singapore (CASE) and the Singapore Renovation Contractors and Material Suppliers Association (RCMA) operate the CaseTrust-RCMA Joint Accreditation Scheme for renovation businesses, providing consumer protection through mandatory project deposits held in escrow and structured payment milestones. Interior design agreements involving CaseTrust-accredited firms follow prescribed payment schedules — typically 10 percent deposit, followed by progressive payments tied to completion milestones.

The Building and Construction Industry Security of Payment Act (Cap. 30B) — commonly known as the SOP Act — protects contractors and subcontractors in the construction industry by providing adjudication mechanisms for payment disputes. While primarily applicable to construction contracts, the SOP Act extends to renovation contracts exceeding certain thresholds, giving interior design firms the right to adjudication for disputed progress payments.

Intellectual property considerations arise where the interior design firm creates original design concepts, drawings, and specifications. The Copyright Act 2021 protects original artistic works, and the agreement should address ownership of design intellectual property — whether the client receives a licence to use the designs or full assignment upon payment.

The Personal Data Protection Act 2012 (PDPA) applies to interior design firms that collect personal data from clients — residential addresses, identification documents, financial information — requiring compliance with the PDPC's data protection obligations.

The Sale of Goods Act (Cap. 393) applies to the supply of materials and furnishings incorporated into renovation works. Implied conditions of satisfactory quality and fitness for purpose under Sections 14 and 15 of the Act protect the client against defective materials, and the interior design agreement should clarify whether the design firm assumes responsibility for materials procurement and quality or whether the client sources materials independently.

The Workplace Safety and Health Act (Cap. 354A) requires contractors to maintain safe working conditions during renovation works, and the interior design firm coordinating the project bears responsibility for confirming that subcontractors comply with WSH requirements at the project site.

An Interior Design Agreement in Singapore becomes necessary when a property owner engages an interior design firm to plan, design, and supervise renovation or fit-out works for residential or commercial premises.

Purchasing a new Build-To-Order (BTO) flat from the Housing and Development Board (HDB) triggers the need for an interior design agreement as new flat owners plan their renovation before or shortly after key collection. HDB requires all renovation works to be carried out by contractors registered under the HDB Renovation Contractor Registration Scheme, and the interior design agreement formalises the relationship between the homeowner and the design firm coordinating the renovation.

Resale HDB flat purchases and Executive Condominium (EC) acquisitions also commonly require interior design services. Resale flat buyers often undertake more extensive renovations — hacking existing finishes, reconfiguring layouts within HDB's permitted guidelines, replacing flooring and cabinetry — making a detailed agreement essential for scope definition and cost control.

Private condominium and landed property owners engage interior designers for projects ranging from minor cosmetic updates to full-scale reconstruction. The Building Control Act (Cap. 29) requires Qualified Person endorsement for structural works, and the interior design agreement should define responsibility for obtaining BCA approvals and coordinating with Professional Engineers registered with the Professional Engineers Board (PEB).

Commercial fit-out projects — office spaces, retail outlets, food and beverage premises, clinics — involve additional regulatory requirements. The Urban Redevelopment Authority (URA) enforces change-of-use regulations, the Singapore Food Agency (SFA) prescribes kitchen layout requirements for F&B establishments, and the Fire Safety Act (Cap. 109A) requires SCDF approval for fire safety provisions in commercial premises.

Landlord-funded tenant improvement works in commercial leases often require a tripartite interior design agreement between the landlord, tenant, and interior design firm. The agreement addresses landlord approval requirements, reinstatement obligations at lease expiry, and compliance with the building's management corporation by-laws under the Building Maintenance and Strata Management Act (Cap. 30C).

Insurance and bonding requirements for larger projects may necessitate a formal agreement. The general insurance market through GIA member insurers offers contractor's all risks (CAR) policies and public liability coverage that reference the interior design agreement terms for coverage determination.

An Interior Design Agreement compliant with Singapore contract law (based on English common law, received under the Application of English Law Act 1993), the Building Control Act (Cap. 29), HDB renovation guidelines, and CaseTrust-RCMA accreditation standards should contain the following mandatory and recommended components. The forms-legal.com Singapore Interior Design Agreement template addresses each element with structured fields aligned to industry practice and regulatory requirements.

The parties section identifies the interior design firm (company name, ACRA UEN, registered address, CaseTrust accreditation number if applicable) and the client (full name, NRIC, property address). For HDB projects, the agreement should confirm that the firm's appointed renovation contractor is registered under the HDB Directory of Renovation Contractors.

The project details section specifies the property address, property type (HDB BTO, HDB resale, private condominium, landed, commercial), floor area, and a detailed description of the renovation scope — demolition and hacking, masonry, carpentry, electrical, plumbing, painting, and furnishing. Clarity in scope definition prevents disputes about included and excluded works.

The design deliverables clause lists the design outputs the firm will provide — concept drawings, 3D renderings, detailed floor plans, electrical and plumbing layouts, material and colour specifications, and furniture schedules. The agreement should specify the number of design revision rounds included in the fee and the cost of additional revisions.

The timeline section establishes the project commencement date, key milestones (design completion, permits obtained, demolition, carpentry installation, final handover), and the expected completion date. HDB renovation permits typically allow 3 months for a 3-room flat and 4 months for larger units, and the timeline should align with permit validity.

The payment schedule section defines the total contract sum, deposit amount, and progressive payment milestones. CaseTrust-RCMA accredited firms follow a prescribed schedule: 10 percent deposit upon signing, followed by payments at defined completion stages (typically 4 to 6 stages). Non-accredited firms should still structure payments against milestones rather than front-loading fees to protect the client from contractor default.

The defects liability clause establishes a warranty period — typically 12 to 24 months from handover — during which the interior design firm must rectify defects in workmanship and materials at no additional cost. The BCA Green Mark scheme and industry practice inform warranty standards for specific components: waterproofing (typically 10 years), carpentry (1 to 3 years), electrical and plumbing (1 year).

The HDB compliance clause addresses specific HDB requirements: approved renovation hours (Monday to Saturday, 9 AM to 6 PM), noise restrictions, prohibited works (hacking of structural walls, modification of bomb shelters, alteration of utility risers), and the requirement to obtain a renovation permit from the HDB Branch Office before commencing works.

The intellectual property and copyright clause addresses ownership of design drawings and specifications under the Copyright Act 2021. Standard industry practice in Singapore grants the client a licence to use the designs for the specific project, with the interior design firm retaining copyright for portfolio and marketing purposes.

The termination clause addresses early termination by either party, specifying the notice period (typically 14 to 30 days), the client's obligation to pay for work completed up to termination, and the firm's obligation to return unused funds and deliver design documents. The Unfair Contract Terms Act (Cap. 396) prohibits unreasonable termination penalties in consumer contracts.

The dispute resolution clause specifies the mechanism for resolving disagreements — CASE mediation, the Small Claims Tribunal (for claims up to $20,000), or the State Courts for larger disputes. CaseTrust-accredited agreements include mandatory CASE mediation as the first step before litigation. Under Singapore law, Section 169 of the Companies Act 1967 (Cap. 50) and Section 8 of the Employment Act 1968 (Cap. 91) govern the core requirements for this type of document.