The quality of a website quote depends heavily on the quality of the brief behind it. A vague request gets a vague, padded estimate. A clear brief gets an accurate one, and a smoother project once work begins.
What your business does and who it is for
Agencies need to understand your business and your customers before they can design around them. A short paragraph on what you sell, who buys it, and what makes you different is more useful than a long company history.
What the website needs to achieve
Be specific about the outcome you want. Getting more enquiry form submissions, selling products directly, or building credibility for a new business are different goals, and they lead to different designs.
Pages and features you know you need
List the pages you expect: home, about, services, contact, and anything specific to you such as a portfolio, a booking system, or a product catalogue. If you are not sure, say so. A good agency will help shape this.
Examples of sites you like
Two or three examples, even from other industries, communicate style far faster than a written description. Note what you like about each one specifically.
What content already exists
Let the agency know whether you have existing copy, photos, and branding, or whether these need to be created. This single item affects both cost and timeline more than almost anything else.
Your budget range
A real range, even an approximate one, helps an agency propose something realistic rather than either underselling what you need or overbuilding what you can afford.
Your timeline
Mention any fixed dates, such as a launch event or a busy season you want to be ready for.
Why this matters
A brief like this takes twenty minutes to put together and saves weeks of back and forth later. It also means the quotes you get back are comparing the same thing, which makes it much easier to judge who is offering genuine value.