The timing of building a website for your online business can vary based on several factors. Here are some considerations that might help you determine when to start building your website:

Validation of your business idea: If you're in the initial stages of your business and are still validating your idea, you might want to start with a minimal viable product (MVP) or test the market through other means before investing in a website.

Market research and planning: Take the time to conduct thorough market research to understand your target audience, their needs, and preferences. Develop a comprehensive business plan that outlines your goals, strategies, and how your website fits into the overall business strategy.

Brand identity and positioning: Before creating a website, ensure you have a clear understanding of your brand identity, including your brand message, logo, color scheme, and overall brand positioning. These elements will need to be reflected in your website design.

Product or service readiness: Ensure your products or services are ready for launch or at least in a state where they can be showcased or sold. Your website will need content and images related to what you're offering.

Resource availability: Consider the resources needed to build and maintain a website. This includes budget, time, technical skills, and personnel. Determine whether you have the necessary resources or need to allocate them before starting the website development.

Timeline and priorities: Assess your timeline for launching the business and how crucial a website is for your initial launch. If it's a critical component, plan accordingly to have the website ready before the launch. If not, you might prioritize other aspects initially.

In general, having a website is essential for most online businesses, as it serves as a central hub for information, sales, and customer interaction. However, the exact timing can vary depending on your specific circumstances and business model. It's often beneficial to have at least a basic online presence early on to start establishing your brand and engaging with potential customers.