If you're asking whether you need a lawyer to draft a contract, legally, the answer is no. Anyone can draft a contract on their own and as long as the elements above are included and both parties are legally competent and consent to the agreement, it is generally lawful.
How do you write a contract for sale? Title the document appropriately. List all parties involved in the agreement. Detail the product or service, including all rights, warranties, and limitations. Specify the duration of the contract and any important deadlines.
To draft a contract from scratch, start by identifying the parties involved and clearly outlining the agreement. Include consideration (what is exchanged), define the terms and conditions, ensure all parties are legally competent, and finalise it with signatures. These essential elements make the contract enforceable.
First and foremost, it is typically the buyer's responsibility — not yours as the seller — to draft the Definitive Agreement. This will not begin until both the buyer and the seller sign a Letter of Intent indicating their intention to buy/sell the business.