“Can you build us a modern website?”

Sounds simple.

It isn't.

That one sentence can produce five completely different proposals, five different budgets, and five very different websites. And honestly, that's where many website projects start going wrong.

A website brief is supposed to prevent that.

It's the document that tells a designer or development agency what you're trying to achieve, who the website is for, what it needs to do, what you already have, and what the project cannot include. Current 2026 guidance from web agencies consistently emphasises goals, audience, scope, functionality, content ownership, design direction, budget, and timeline as core parts of a useful brief. (Wise Media)

But there's a bigger idea here.

Don't brief someone on the website you think you need. Brief them on the problem the website needs to solve.

That's the difference between getting a website and getting the right website.

Before Writing a Website Brief, Diagnose the Real Problem

First things first.

Do you actually need a new website?

Maybe you only need a refresh. Maybe the structure is wrong and you need a redesign. Or perhaps the technology underneath has become such a mess that a complete rebuild makes more sense.

These aren't the same project.

And they certainly shouldn't receive the same proposal.

Think of it like taking your car to a mechanic. You don't walk in and say, “Replace the entire engine,” when the actual problem is a flat tyre.

The same principle applies to websites.

Before approaching developers, understand what is broken, what is outdated, what users struggle with, and what the business actually needs to improve.

Recent 2026 website-brief guidance also recommends explaining the current situation and the problem before prescribing a technical solution, because a good agency needs enough context to recommend the right approach rather than simply execute assumptions. (Platform)

Why Most Website Briefs Fail

They Describe the Solution Instead of the Problem

“We need a new WordPress website.”

“We need a React website.”

“We need a modern redesign.”

“We need 15 pages.”

These statements might be useful eventually.

But they don't explain why.

What isn't working today?

Are visitors unable to find information? Are leads dropping? Is the CMS impossible for staff to manage? Is the website slow? Does the checkout process lose customers?

That's the stuff your developer actually needs to know.

Otherwise, vendors start filling the gaps themselves.

And that's when proposals go in completely different directions.

One agency sees “redesign” and imagines a visual makeover. Another sees it as a structural redesign. A third thinks you need a complete rebuild.

Nobody is necessarily wrong.

Your brief just wasn't specific enough.

What Happens When Your Brief Is Too Vague?

Usually, one of three things happens.

The website gets delivered, but it doesn't feel like what you expected.

Or the developer says, “That wasn't included.”

Or the project keeps expanding until the original budget and timeline become almost meaningless.

That's scope creep.

And it rarely arrives dramatically.

It starts with tiny sentences.

“Can we add this too?”

“What about a booking system?”

“Could we also integrate WhatsApp?”

“Can you add another user type?”

“Actually, we need a customer dashboard.”

Before you know it, your five-page website has become a small SaaS platform.

A good brief is like a fence around a construction site. It doesn't stop improvements. It simply makes it clear where the project ends.

How to Write a Website Brief Step by Step

1. Start With the Business Problem

Don't start with the homepage.

Start with the pain.

Write two or three sentences explaining what isn't working and why the project matters.

For example:

“Our current website receives traffic but generates very few qualified enquiries. Visitors struggle to understand our services, find relevant case studies, and contact the right team. The new website should simplify those journeys and increase qualified leads.”

Much better than:

“We need a modern website.”

The second describes an object.

The first describes a business problem.

And that's what your developer can work with.

2. Define Your Target Audience Clearly

“Everyone” is not a target audience.

You know that, right?

Yet businesses still write things like “our website is for anyone interested in our services.”

That's almost useless.

Instead, identify your major user groups and explain what each one wants from the website.

A B2B software company might have:

Business owners looking for solutions and pricing.

Operations managers comparing features and integrations.

Technical decision-makers checking security and implementation details.

Each audience may need a different journey.

You don't need a 40-page persona document. Two or three useful sentences per audience can be enough to give a developer meaningful context. (Wise Media)

3. Explain What Success Looks Like

This is one of the most important sections.

Don't simply write:

“Improve user experience.”

Okay... but how will you know you've improved it?

Instead, define an observable outcome.

For example:

“Visitors should be able to find the correct service within two clicks.”

Or:

“Generate 50 qualified enquiries per month.”

Or:

“Increase online bookings by 20% within six months.”

The more measurable the goal, the easier it becomes to make design and development decisions.

A website brief should function like a GPS destination. “Drive somewhere nice” isn't much help. “Take me to this exact address” is.

4. Describe Your Current Website

Now explain what you're starting with.

Include your current website URL, CMS or platform, hosting arrangement, major integrations, analytics setup, forms, payment systems, CRM connections, and any important technical limitations.

Also mention what you want to keep.

Maybe your existing blog content is valuable. Maybe your SEO rankings are strong. Maybe your CRM integration cannot be interrupted.

Developers need to know this before they estimate the project.

Otherwise, you're asking them to price a house without telling them whether there's already a basement underneath it.

5. Define the Website Scope

This is where you get specific.

List the major pages and, more importantly, the unique templates and functionality the project needs.

For example:

Home
About
Services
Service detail template
Case studies
Blog
Contact
Booking
Customer dashboard

But don't stop at pages.

Say what the website needs to do.

Will it accept payments?

Handle appointments?

Connect with a CRM?

Support multiple languages?

Allow customer accounts?

Include advanced search?

Integrate WhatsApp?

Connect to Facebook or Instagram campaigns?

Recent 2026 brief guidance recommends explicitly naming integrations and functionality because these requirements can significantly affect scope and pricing. (Wise Media)

6. Explain Your Design Direction

You don't have to be a designer.

Thank goodness.

Instead, show examples.

Give your developer three to five websites you like and explain why you like them.

Maybe you like:

The clean navigation.

The typography.

The product presentation.

The animation.

The amount of whitespace.

The mobile experience.

Also explain what you don't like.

“Make it modern” is vague.

“Clean, minimal, professional, with strong typography and subtle animations” is much more useful.

Your references are like showing a tailor a photograph of the suit you want. They don't need to copy the suit. They need to understand the direction.

7. Decide Who Owns the Content

This gets forgotten constantly.

Who writes the website copy?

Who provides photographs?

Who creates product descriptions?

Who supplies case studies?

Who writes blog content?

Who provides videos?

And who approves everything?

If nobody owns these tasks, the project can sit around waiting for content while the development team waits for the green light.

Recent 2026 website-brief guidance specifically identifies content ownership as a major project consideration and a common source of delays. (Wise Media)

So put it in the brief.

Don't assume.

8. Include SEO Requirements From Day One

SEO shouldn't be an afterthought.

If organic traffic matters, say so before development begins.

Mention requirements such as:

Technical SEO.

Mobile performance.

URL structure.

Redirects.

Metadata.

XML sitemap.

Schema markup where appropriate.

Analytics and Search Console.

Content migration.

Existing rankings that must be protected.

This is particularly important if you're replacing an established website.

A redesign that looks fantastic but accidentally destroys years of search visibility isn't successful.

It's a very expensive makeover.

9. Include Social Media and Facebook Requirements

Your website doesn't live alone anymore.

It sits inside a larger digital ecosystem that might include Facebook, Instagram, Messenger, WhatsApp, LinkedIn, TikTok, YouTube and email marketing.

So tell the developer how social media fits into the project.

Do you need social sharing?

Links to your social profiles?

Facebook or Instagram campaign landing pages?

Meta Pixel?

Conversions API?

Lead forms?

WhatsApp or Messenger integration?

This matters because Meta's advertising tools can send people from Facebook and Instagram directly to websites and landing pages, while Meta's Conversions API can connect website and CRM data with Meta's advertising systems for measurement and optimization. (Facebook)

So if your business relies heavily on Facebook or Instagram advertising, the landing-page experience and conversion tracking should be part of the website brief—not something discussed three weeks before launch.

Meta also allows businesses to drive traffic from Facebook Pages to specific website destinations, products and pages, making the relationship between your social presence and website even more important. (Facebook)

Your website is the shop.

Social media is often the road bringing people to the shop.

Designing one without thinking about the other is like building a beautiful store at the end of a road nobody can find.

10. Be Honest About Your Budget and Timeline

This can feel uncomfortable.

It shouldn't.

You don't necessarily need to give one fixed number. A realistic budget range is often more useful because it helps agencies understand the level of solution you're considering. Current 2026 guidance increasingly recommends providing a budget range rather than hiding it completely. (Wise Media)

The same goes for the timeline.

Don't simply write:

“Launch ASAP.”

That's not a deadline.

Say:

“We need the website live by November 15 because our new product launches on November 20.”

Now the developer understands the reason behind the date.

And that changes planning.

11. State What Is Not Included

This little section can save you a lot of money.

Say what's outside the project.

For example:

“The member portal will remain unchanged.”

“Historical blog migration is not included.”

“Brand identity redesign is outside the current scope.”

“Mobile app development is not part of phase one.”

Simple.

Clear.

Powerful.

Because when exclusions are written down, they become much easier to manage when someone says, “Oh, we thought that was included.”

How AI Can Help You Improve Your Website Brief

Here's where things get interesting.

You don't need AI to write the entire brief for you.

In fact, I wouldn't.

You know your business better than a chatbot does.

But AI can be an excellent thinking partner.

Use AI as a Gap Finder

Paste your draft into an AI model and ask:

“What information is missing that a professional web development agency would need to estimate this project accurately?”

It can identify missing integrations, unclear audiences, vague goals, missing content responsibilities and technical unknowns.

That's useful.

Use AI as an Assumption Challenger

Try:

“What assumptions in this website brief could be interpreted differently by a web developer or agency?”

This is where the hidden problems often appear.

Maybe you wrote “e-commerce website,” but didn't specify the number of products.

Maybe you wrote “customer portal,” but didn't describe what customers actually need to do.

Maybe you said “social media integration,” but didn't explain which platforms or functionality.

AI can help expose those gaps before a vendor does.

Use AI as a Plain-Language Tester

Then ask:

“Summarise the core problem this website project is solving in two sentences.”

If the answer sounds confused, your brief probably is too.

If the summary is clear, you're getting somewhere.

And this matters even more now that AI-powered development tools are becoming capable of turning relatively simple descriptions into functional websites and digital products. Recent 2026 developments show AI website builders moving beyond basic page generation toward backend functionality, user management, e-commerce, AI integrations and ongoing optimisation. (TechRadar)

Better inputs are becoming more valuable, not less.

What a Good Website Brief Does for Vendors

Here's the payoff.

A strong brief makes proposals easier to compare.

Instead of five vendors inventing five different versions of your project, they're responding to the same core problem, audience, scope, constraints and success criteria.

That changes the conversation.

You can compare their strategy.

Their assumptions.

Their technical approach.

Their timeline.

Their pricing.

Their understanding of your users.

And their questions become better too.

Instead of:

“What did you mean by modern?”

You start hearing:

“How are you currently measuring qualified leads?”

“Which CRM needs to receive form submissions?”

“Which existing URLs need to be preserved for SEO?”

“Who will approve content?”

Those are useful questions.

Your Website Brief Is More Than a Document

Most organisations treat the brief as paperwork.

Write it. Send it. Forget it.

Don't.

Your brief should become the project's north star.

When a new feature is suggested, ask whether it supports the original goal.

When scope expands, check whether the addition belongs inside the agreed problem.

When vendors propose different solutions, compare them against the same outcomes.

That's how you keep a website project from drifting.

Final Thoughts: Write the Brief Before You Shop for Developers

A website brief doesn't need to be 40 pages.

It doesn't need fancy corporate language.

And it certainly doesn't need to tell an experienced developer exactly how to write every line of code.

It needs to answer the important questions.

What problem are we solving?

Who are we solving it for?

What should users be able to do?

What does success look like?

What already exists?

What needs to be built?

What is outside the scope?

Who provides the content?

What are the budget and timeline?

How will the website connect with SEO, analytics and social media?

That's it.

Well, mostly.

Because the best brief isn't the one with the most information.

It's the one with the least ambiguity.

A vague brief is like giving a builder a blank piece of land and saying, “Build me something nice.”

A strong brief gives them the map, the destination, the boundaries and the reason for the journey.

And honestly, that's how you stop shopping for a website...

and start commissioning one that actually does what your business needs.