How to Prepare a Website Development Brief for an Outsourcing Partner

Your agency has signed a new website project.

The client has explained what they want, your team has discussed the design, and now you're ready to involve a development partner.

You send a message saying:

"We need a modern, responsive WordPress website with around 10 pages. Please send a quote."

The developer comes back with questions.

Are the designs ready? How many unique templates are needed? Does the client need a booking system? Who provides the content? Is there an existing website? Are there integrations?

Suddenly, a project that seemed straightforward needs several more conversations before anyone can estimate the work.

This is where a website development brief helps.

A clear brief gives your outsourcing partner the information needed to understand the project, estimate the development effort and identify technical questions before work begins.

For agencies, it also makes client delivery easier to manage.

In this guide, we'll explain what to include in a website development brief, how much detail is necessary and how to prepare a reusable template for your future projects.

What Is a Website Development Brief?

A website development brief is a document explaining what needs to be built, how it should work and what the development team is expected to deliver.

It connects your agency's client requirements with the technical work required to complete the website.

A development brief may include:

• Project objectives
• Website platform
• Page structure
• Approved designs
• Functional requirements
• Content requirements
• Integrations
• SEO requirements
• Responsive behaviour
• Testing expectations
• Timeline
• Handover requirements

It doesn't need to be unnecessarily long.

A simple landing page may only require a short brief, while a custom ecommerce website or application may need detailed specifications.

The goal is to give the developer enough information to understand the agreed work without guessing.

Why a Development Brief Matters When Outsourcing

When your agency handles design, client communication and project management, the development partner may not have direct access to the end client.

That makes the project brief particularly important.

More Accurate Quotations

A developer can estimate a project more effectively when the required pages, features and integrations are known.

Fewer Misunderstandings

Clear requirements reduce disagreements about what was supposed to be included.

Better Project Planning

The development team can identify dependencies, technical limitations and information needed before starting.

Easier Quality Review

Your agency can compare the completed website against the documented requirements.

Better Control Over Scope Changes

When a client requests something new, you can determine whether it was included in the original brief.

A good brief doesn't eliminate every project risk, but it gives everyone a shared reference point.

1. Start With the Project Overview

Begin by explaining what the website is for.

Developers need to understand the project's purpose, not just the list of pages.

For example:

• Project: Website redesign for a UK accounting firm.
• Objective: Replace the existing website with a modern, mobile-friendly WordPress website that clearly presents the firm's services and makes it easier for prospective clients to enquire.
• Target audience: Small business owners looking for accounting and tax services.
• Agency responsibility: Design, content, client communication and approvals.
• Development partner responsibility: WordPress development, agreed functionality, testing and technical handover.

This short overview gives the technical team useful context.

It also clarifies what your agency will manage and what you're outsourcing.

2. Specify the Website Platform

Identify the preferred development platform.

Common examples include:

• WordPress
• WooCommerce
• Shopify
• Webflow
• Wix
• Custom HTML, CSS and JavaScript
• React or Next.js
• Other custom development frameworks

If the platform hasn't been decided, explain the client's requirements rather than selecting one without technical review.

For example, a client may need:

• Editable service pages
• A blog
• Multiple team members with CMS access
• Online payments
• CRM integration
• Custom account functionality

These requirements can help determine which platform is suitable.

If your client has already selected a platform, mention any restrictions or preferences.

3. Provide a Complete Page List

One of the most common problems in website quotations is an unclear page count.

A client might say they need a 15-page website, but not every page requires a unique design or development template.

For example:

This structure helps the development team understand the actual implementation work.

Include a sitemap or page list showing the required website structure.

If some pages are planned for a later phase, identify them separately.

4. Share Approved Designs and Design Assets

If your agency has completed the website design in Figma, share the relevant file with the development team.

The brief should explain whether the designs are final or still being reviewed.

Include:

• Figma file link
• Approved desktop designs
• Mobile designs, where available
• Tablet requirements
• Brand guidelines
• Fonts
• Colours
• Logos
• Icons
• Image assets
• Animation references

If the designs don't include mobile layouts, explain who is responsible for defining responsive behaviour.

Avoid assuming that the developer will automatically make the same design decisions your creative team intended.

Example Design Instruction

"Develop the website using the approved Figma layouts. Use the supplied brand assets and typography. Mobile behaviour should follow the provided responsive designs. Any layout changes not covered by the designs should be reviewed with our agency before implementation."

This gives the development team a clearer expectation.

5. Explain the Website Functionality

A page list tells the developer what pages exist.

A functionality list explains what those pages need to do.

For example, a service website might require:

• Contact forms
• Dropdown navigation
• Blog functionality
• Search
• FAQ accordions
• Interactive tabs
• Booking functionality
• File uploads
• Newsletter signup
• CRM integration

An ecommerce website may require:

• Product listings
• Product variants
• Collections or categories
• Shopping cart
• Checkout
• Payment provider integration
• Shipping configuration
• Discount functionality
• Customer accounts

For each important feature, explain the expected behaviour.

Instead of writing "CRM integration required," explain what information needs to move and when.

For example:

"When a visitor submits the consultation form, the agreed contact details should be sent to the client's CRM. The form should display a confirmation message and handle unsuccessful submissions appropriately."

That is much more useful for development estimation.

6. Define the Content Responsibilities

Your development partner needs to know who will supply the website content.

Clarify whether your agency will provide:

• Final page copy
• Images
• Videos
• Team profiles
• Service descriptions
• Product information
• Blog articles
• Testimonials
• Legal pages

If content isn't ready, explain whether placeholders can be used during development.

Also specify who will upload the final content.

A project can be technically complete but still unable to launch because essential content hasn't been approved.

Content responsibilities should be agreed early.

7. Include SEO Requirements

If your agency provides SEO services, technical requirements should be included in the development brief.

Don't assume every developer knows which SEO elements are important for your client's project.

On-Page SEO Requirements

Specify relevant requirements such as:

• Editable SEO titles and meta descriptions
• Appropriate heading structure
• Descriptive page URLs
• Internal linking
• Image alternative text support
• Canonical tags
• XML sitemap
• Robots directives
• Structured data where appropriate

Existing Website Redesigns

If the client already has a website, include:

• Existing URLs to preserve
• Pages receiving organic traffic
• Approved URL changes
• Redirect mapping
• Important content to retain
• Metadata that should be preserved
• Existing search indexing requirements

Technical SEO Checks

The launch checklist may include:

• Correct canonical URLs
• No accidental noindex directives
• Working redirects
• Internal links pointing to live URLs
• Mobile usability
• Crawlable page content
• Appropriate sitemap entries

No development process can guarantee unchanged Google rankings, but documenting technical SEO requirements can help reduce avoidable mistakes.

8. Explain Third-Party Integrations

Many website projects depend on external systems.

Your brief should identify the integrations and explain what they need to achieve.

Examples include:

• CRM systems
• Payment providers
• Email marketing platforms
• Booking tools
• Analytics systems
• Live chat tools
• Inventory software
• Shipping services
• External APIs

For each integration, include:

• Platform name
• Required functionality
• Available documentation
• Who manages the third-party account
• Any relevant technical limitations
• Testing requirements

Don't include passwords, API keys or sensitive credentials in the brief.

These should be shared separately through an agreed secure process when required.

9. Define Responsive and Browser Requirements

A website may look correct on a desktop screen but behave differently on mobile devices.

Your brief should explain the expected responsive behaviour.

Consider:

• Mobile navigation
• Tablet layouts
• Image scaling
• Text wrapping
• Form usability
• Buttons and interactive elements
• Responsive tables
• Sticky headers
• Animations

Also specify any required browser support.

For example:

"The website should be tested on current versions of Chrome, Safari, Firefox and Edge, with mobile testing on agreed iOS and Android devices or representative environments."

The exact testing coverage should reflect the project requirements and agreement.

10. Agree on Testing and Quality Assurance

Testing is an important part of website delivery.

Your agency should define what needs to be checked before the website is considered ready.

Visual Testing

Compare developed pages with the approved designs.

Functional Testing

Check forms, navigation, buttons, interactive components and required features.

Responsive Testing

Review the website on the agreed screen sizes.

Integration Testing

Confirm that connected systems behave as expected.

SEO Testing

Review agreed technical SEO requirements.

Content Review

Check that approved content has been implemented correctly.

Accessibility Review

Test against the agreed accessibility requirements.

Launch Checks

Confirm domain configuration, SSL, indexing settings and other agreed launch requirements.

The development brief should identify who performs each check and who approves the final result.

11. Define Project Milestones

A development brief should include the expected timeline.

Rather than listing only a final deadline, identify the main project stages.

For example:

Dates should be added after the scope and resource availability have been confirmed.

This helps avoid promising a client a launch date before the technical work has been properly assessed.

12. Clarify Revisions and Scope Changes

Revisions are normal, but they need a clear process.

Your brief should explain:

• How feedback will be submitted
• Who consolidates client feedback
• What constitutes a defect
• What constitutes a new requirement
• How additional work is approved
• Whether changes affect the timeline or quotation

For example, correcting a page that doesn't match an approved design may be different from adding a booking system that wasn't included in the original requirements.

Your agency should have a process for handling both situations.

13. Define the Final Handover

Before development begins, agree on what your agency will receive at completion.

Depending on the project, this may include:

• Website administrator access
• Source code
• Repository access
• Hosting or deployment details
• Custom theme files
• Plugin or app information
• Documentation
• CMS editing instructions
• Integration details
• Backup information
• Agreed testing records

Ownership, licensing and transfer of deliverables should be covered by the relevant project agreement.

Website Development Brief Template for Agencies

You can copy the following template and use it when requesting a quotation from an outsourcing partner.

Common Mistakes Agencies Make With Development Briefs

Even experienced agencies sometimes leave important details out of their briefs.

Sending Only a Figma Link

Designs show how a website should look, but they may not explain all the functionality, integrations or content management requirements.

Quoting Based Only on Page Count

Ten pages with custom functionality can require more work than 30 pages using reusable templates.

Forgetting Mobile Requirements

Responsive behaviour should be defined rather than left entirely to assumptions.

Leaving Integrations Until the End

CRM, payment or booking integrations can affect development architecture and timelines.

Not Defining Revisions

Unclear revision arrangements can create disagreements about additional work.

Ignoring Existing SEO Performance

A redesign or migration can affect established URLs, content and search visibility.

Failing to Define Handover

Your agency should know what files, access and documentation it will receive.

Promising a Deadline Before Technical Review

A client deadline should be discussed with the development team before it becomes a firm commitment.

How to Get a More Accurate Development Quote

A good brief helps a development provider prepare a more useful quotation.

However, a brief doesn't need to answer every technical question in advance.

If some requirements are uncertain, identify them clearly.

For example:

"The client needs an appointment booking system, but the provider hasn't been selected. Please identify what information you need before estimating this feature."

This is better than leaving the requirement out entirely.

When comparing quotations, check whether each provider has included the same deliverables, integrations, testing and handover responsibilities.

The lowest quotation may not represent the lowest total delivery cost if important work is excluded.

Frequently Asked Questions

What should a website development brief include?

A useful brief should cover the project objectives, platform, designs, page structure, functionality, content, integrations, SEO requirements, testing, timeline and handover.

How long should a development brief be?

It depends on the project. A simple landing page may need only a short document, while a complex website or application may require detailed specifications.

Can I request a quotation without completed designs?

Yes. However, the quotation may need assumptions or further clarification if the design scope isn't defined.

Is a Figma file enough for development?

Not always. Figma designs may not fully describe backend functionality, integrations, CMS requirements, SEO considerations or launch responsibilities.

Should agencies include a budget in the brief?

Sharing a realistic budget range can help a development provider assess the scope and suggest suitable approaches. It is optional unless required by the quotation process.

Who should prepare the development brief?

Usually the agency project manager, account manager or technical lead prepares it using the client's approved requirements.

Can the same template be used for WordPress and Shopify?

Yes, but the platform-specific sections should be adapted to the project.

Should SEO requirements be included?

Yes, especially for existing websites, redesigns and migrations where search visibility may be affected.

What happens if requirements change after development begins?

Changes should be reviewed against the agreed scope and may require adjustments to cost, deliverables or timeline.

Have a Website Project Ready for Development?

If your agency has a client website project and needs a development partner, White Label Agency can review your requirements.

We support agencies with WordPress, Shopify, WooCommerce, frontend development, backend development and custom website projects.

You can share your development brief, approved designs, preferred platform and expected timeline.

We'll review the information and discuss the next steps.

Our services are intended for agencies outsourcing development work for existing client projects, not freelancers looking for jobs or agencies seeking new customers.