Why Most Agency Projects Go Wrong Before They Even Start

Ask any digital agency what the single biggest cause of project delays and budget overruns is, and most will give you the same answer: a poor brief. Not bad developers. Not unclear timelines. Not even mismatched tools. A weak brief.

When a business owner or team sends a vague scope — something like "we need an app, kind of like Airbnb but for pet care, we'll figure out the details later" — the agency is left guessing. And guessing costs everyone time and money.

The good news is that writing a strong brief is a learnable skill. You don't need a product management background or a technical degree. You just need to know what information actually matters to the people building your product — and how to communicate it clearly before a single line of code is written or a single screen is designed.

What a Good Brief Actually Contains

A strong brief isn't a 40-page document. It's a focused, honest summary of what you're trying to achieve, who it's for, and what success looks like. Here's what it should include.

1. The Problem You're Solving (Not the Solution You Want)

This is the most important part of any brief, and the most commonly skipped. Business owners often come to agencies with a solution already locked in — "we need a mobile app" — without explaining the underlying problem they're trying to solve.

A better approach: describe the current situation and what's broken about it. Are customers dropping off at checkout? Is your team wasting hours on manual reporting? Are users confused by your current interface? The agency's job is to find the best solution. Yours is to describe the problem clearly.

For example, a Melbourne-based trade services company might brief an agency with: "Our admin team spends three hours a day manually scheduling jobs from a spreadsheet. We lose bookings when customers can't self-schedule online. We need this fixed." That's a brief an agency can work with.

2. Your Target Audience

Who is this for? The more specific you can be, the better. Age range, geography, technical confidence, what device they use, what they currently use instead of your product — all of this shapes design and development decisions in meaningful ways.

A fintech startup targeting retirees in Canada will need a very different interface from one targeting twenty-something freelancers in Singapore. If you haven't defined your audience clearly, now is the time. You can even use a tool like the free brand health score assessment to surface gaps in how your brand connects with your intended market before briefing an agency.

3. Scope and Must-Have Features

List the core features your product needs at launch — not everything you'd love in an ideal world, but the minimum set that makes the product useful. This is your MVP scope.

A common mistake is treating a brief like a wish list. Agencies appreciate ambition, but they need clarity. Separate your "must-haves" from your "nice-to-haves" and label them accordingly. This helps with accurate scoping, realistic timelines, and smarter prioritisation on both sides.

4. Examples of What You Like (and Don't Like)

Visual references save hours of back-and-forth. Share three to five examples of apps, websites, or products whose design or UX you admire — and explain what specifically resonates. Is it the navigation structure? The clean data layout? The onboarding flow?

Equally useful: tell the agency what you don't want. If you've seen a competitor's product and found it cluttered, say so. These negative examples are often just as valuable as the positive ones.

5. Technical Context

Your agency needs to understand the environment they're building into. Do you have an existing tech stack? Are there third-party tools that need to integrate — a CRM, a payment gateway, a booking system? Are there compliance requirements specific to your industry or region (like data localisation rules in Australia or accessibility standards in the US)?

You don't need to be technical yourself to communicate this. Just list the tools your business currently uses and flag anything that might affect the build. Your agency will ask the right follow-up questions.

6. Budget and Timeline

Many businesses are reluctant to share a budget upfront, worried the agency will simply fill it. But withholding this information actually makes scoping harder and slower for everyone.

A good agency will use your budget as a constraint to prioritise smartly — not as a ceiling to hit. Sharing a realistic range (even a broad one) allows them to recommend the right approach for what you can actually invest. Similarly, if you have a hard launch deadline — a trade show, a product release date, a regulatory deadline — say so from the start.

Common Briefing Mistakes to Avoid

Briefing by Committee Without a Single Decision-Maker

One of the fastest ways to derail a project is to have five stakeholders with equal say and no defined point of contact. Decide who owns the relationship with the agency before the project begins. This person approves feedback, resolves internal disagreements, and gives the agency a single source of truth.

Changing the Brief Mid-Project

Scope changes mid-project are a leading cause of budget blowouts. That's not to say requirements never evolve — they do. But every change to the scope should go through a formal change request, not a casual Slack message. A good agency will flag when a request falls outside the original brief. It's not bureaucracy — it's how projects stay on track.

Confusing Inspiration With Direction

Saying "we want something like Instagram" is inspiration. It's not a brief. Pull out the specific element you're referencing — the Stories format, the grid layout, the explore algorithm — and explain why it's relevant to your product. Vague references lead to misaligned expectations.

Leaving Out Business Context

Agencies do better work when they understand your broader business. What's your revenue model? What does success look like in 12 months? Are you planning to raise funding, expand into new markets, or integrate this product into a larger platform? This context changes how the agency thinks about architecture, scalability, and design decisions.

How to Structure the Actual Document

A one-page brief is often enough for a straightforward project. For more complex builds — a multi-platform SaaS product, for instance — a structured brief might run three to five pages. Either way, here's a simple format that works:

Project Overview: One paragraph describing what you're building and why.
Problem Statement: The specific gap or pain point this addresses.
Target Audience: Who uses this and what they need from it.
Scope: Must-have features, nice-to-haves, and explicit out-of-scope items.
Design References: Three to five examples with notes on what you like.
Technical Requirements: Existing stack, integrations, compliance considerations.
Timeline: Hard deadlines, preferred milestones.
Budget Range: A realistic range you're working within.
Decision-Maker: Who the agency reports to and how feedback is managed.

You don't need to use formal language or fill every section with long paragraphs. Bullet points work. Honest, direct language works. What matters is that the agency finishes reading and has a clear picture of what you need and why.

What Happens After You Share the Brief

A good agency won't just quote from your brief — they'll probe it. Expect questions. That's a sign they're thinking carefully about your project, not rushing to invoice you. The discovery conversation that follows a well-written brief is where the best work actually begins.

At Lenka Studio, for example, the first step after receiving a brief is usually a structured discovery session — not to restate what's already in the document, but to surface assumptions, identify risks, and align on outcomes before any design or development work begins. A brief that's been thoughtfully written makes that session far more productive for everyone involved.

If you find yourself unsure where to start with your brief, consider starting with your brand positioning and growth goals. The brand health score assessment can help clarify where your business stands today — which often informs what the product needs to do and for whom.

A Better Brief Means a Better Partnership

Working with a digital agency is a collaboration, not a transaction. The brief is how that collaboration begins. When you take the time to think through what you need, who it's for, and what success looks like, you're not just helping the agency — you're protecting your own investment.

The businesses that get the most from agency relationships are the ones that come prepared. They've done the internal thinking before asking for external execution. And they treat the brief not as a formality, but as the foundation the entire project is built on.

If you're preparing to kick off a digital project and want to make sure you're set up for success, the team at Lenka Studio is happy to walk through your brief before you commit to a scope. Get in touch and let's make sure you start on solid ground.