Civil Law Act (Cap. 43): Primary legislation governing civil law matters and contractual relationships in Singapore, providing the fundamental legal framework for option agreements

Contract Law: Common law principles governing contract formation, validity, and enforcement, essential for option agreement structuring

Sale of Goods Act (Cap. 393): Regulates the sale of goods and may be relevant if the option pertains to goods rather than real estate

Specific Relief Act (Cap. 321): Provides remedies for breach of contract, including specific performance which may be relevant for option agreements

Land Titles Act (Cap. 157): Governs registration and transfer of land titles in Singapore, crucial for real property option agreements

Residential Property Act (Cap. 274): Regulates the purchase of residential properties by foreign persons and entities in Singapore

Housing and Development Act (Cap. 129): Relevant for options involving HDB properties, including restrictions and requirements for such transactions

Stamp Duties Act (Cap. 312): Governs stamp duties payable on option agreements and subsequent property transactions

ABSD Regulations: Additional Buyer's Stamp Duty regulations affecting property purchases, particularly relevant for foreign buyers and entities

TDSR Framework: Total Debt Servicing Ratio framework limiting the amount buyers can borrow for property purchases

Competition Act (Cap. 50B): Relevant for business-related options to ensure compliance with competition law requirements

Companies Act (Cap. 50): Governs corporate entities' capacity to enter into option agreements and related corporate requirements

Electronic Transactions Act (Cap. 88): Provides legal framework for electronic execution of option agreements and related documents