How to Write a Technical Brief That Gets You Accurate Quotes
You email five development agencies describing your project. You get back five wildly different estimates—$20,000, $45,000, $80,000, $120,000, and "we need more information."
The problem isn't the agencies. It's the brief.
A vague brief forces developers to guess. Some guess low to win the work. Some guess high to cover risk. None of them are estimating the same thing, because you haven't defined the same thing.
Here's how to write a brief that gets consistent, accurate quotes.
What a Technical Brief Is (And Isn't)
A technical brief is a document that describes what you want built, who it's for, and what success looks like. It's not a 50-page requirements doc. It's not a wireframe. It's not a pitch deck.
Think of it as the minimum information a competent development team needs to give you a realistic estimate.
The Structure That Works
1. One-Paragraph Summary
Start with a single paragraph that explains the product. If you can't describe it in one paragraph, you're not ready to get quotes.
Good example:
"We need a web application where small business owners can create invoices, send them to clients via email, and track payment status. Clients can pay online via Stripe. The business owner sees a dashboard with outstanding and paid invoices."
Bad example:
"We're disrupting the invoicing space with an AI-powered fintech platform that leverages machine learning to optimize cash flow for SMBs in the creator economy."
The first one tells a developer exactly what to build. The second one tells them nothing.
2. User Roles
List every type of person who will use the application and what they can do.
| Role | Can Do |
|---|---|
| Business Owner | Create/edit/delete invoices, view dashboard, manage clients, connect Stripe |
| Client | View invoice, pay online, download PDF receipt |
| Admin | All of the above + manage business owner accounts |
This is critical. Every role adds complexity. A two-role app is dramatically simpler than a five-role app, and that difference will show up in the estimate.
3. Core Features (Prioritized)
List features in order of importance. Be specific about what each one means.
Must Have (MVP)
- User authentication (email + password)
- Create and send invoices (line items, tax, notes)
- Stripe payment integration
- Dashboard showing invoice status
- Email notifications (invoice sent, payment received)
Nice to Have (v2)
- Recurring invoices
- Multiple currency support
- QuickBooks integration
- Client portal with payment history
This prioritization tells developers what to estimate for the MVP and what can wait. Without it, some agencies will quote the full wish list and some will quote the minimum.
4. Design Expectations
Be honest about your design expectations. This significantly affects cost.
| Level | What It Means | Cost Impact |
|---|---|---|
| Use a template/component library | Functional but generic look | Lowest |
| Custom design based on brand guidelines | Unique look, you provide logos/colors/fonts | Medium |
| Full custom design from scratch | Hire a designer or expect the agency to design | Highest |
If you have existing brand guidelines, a Figma file, or even screenshots of apps you like—include them. "Make it look like Stripe's dashboard but with our colors" is infinitely more useful than "make it look professional."
5. Technical Constraints
If you have preferences or requirements, state them upfront.
Things worth mentioning:
- Hosting: Do you already have AWS, Vercel, or another provider?
- Existing systems: Does this need to integrate with your current tools?
- Compliance: HIPAA, SOC 2, GDPR—these add significant scope
- Scale: Are you expecting 100 users or 100,000?
- Mobile: Web only, or do you also need iOS/Android?
If you don't have opinions on these, say so. "We're open to your recommendation on tech stack" is a perfectly valid answer.
6. Timeline and Budget
Developers hate when clients hide their budget. Here's why:
A feature can be built in many ways. A $30,000 budget means one approach. A $100,000 budget means another. Both might be valid for your situation, but the agency can only recommend the right one if they know your constraints.
You don't need an exact number. A range works:
- "Our budget is $40,000-$60,000 for the MVP"
- "We need to launch by Q2 2026"
- "We have $25,000 now and can invest more after launch if it validates"
This helps agencies self-select. If your budget is $30,000 and an agency's minimum project is $75,000, you both save time by knowing that upfront.
7. Success Criteria
How will you know the project succeeded? Define this before development starts.
Examples:
- "Users can complete the invoice-to-payment flow in under 3 minutes"
- "The application handles 500 concurrent users without degradation"
- "We launch with zero critical bugs"
- "Onboarding a new client takes one email, not a phone call"
This gives developers a target, not just a task list.
Common Mistakes to Avoid
Writing a Novel
A 30-page brief doesn't get better estimates—it gets ignored. Keep it under 5 pages. If you need more detail, put it in an appendix.
Specifying Technology You Don't Understand
Don't write "must use microservices architecture with Kubernetes" unless you actually need that and know why. Let the development team recommend the technology. You describe the problem; they choose the tools.
Forgetting About the Boring Stuff
Features that don't feel exciting but always need to exist:
- Password reset flow
- Email verification
- Error pages
- Loading states
- Mobile responsiveness
- Data export (CSV, PDF)
- Account deletion (required by law in many jurisdictions)
If your brief doesn't mention these, some agencies will include them and some won't. That's where estimate inconsistency comes from.
Not Mentioning Integrations
Third-party integrations are often the most time-consuming part of a project. If you need Stripe, SendGrid, Twilio, QuickBooks, Salesforce, or any other service—list it explicitly.
"Stripe integration" can mean:
- One-time payments only (2-3 days)
- Subscriptions with plan management (1-2 weeks)
- Marketplace with split payments (2-4 weeks)
The difference matters.
A Template You Can Use
Here's the structure in one page:
PROJECT BRIEF: [Project Name]
SUMMARY
[One paragraph describing the product]
USERS
[Table of roles and what they can do]
FEATURES (MVP)
[Prioritized list with brief descriptions]
FEATURES (FUTURE)
[Nice-to-haves for after launch]
DESIGN
[Template / custom / full design — include references]
TECHNICAL NOTES
[Hosting, integrations, compliance, scale, mobile]
TIMELINE & BUDGET
[Target launch date and budget range]
SUCCESS CRITERIA
[How you'll measure if the project worked]
Fill this out and you'll get estimates that are actually comparable.
What Happens After You Send the Brief
A good agency will:
- Ask clarifying questions within 48 hours (this is a good sign)
- Propose a discovery call to walk through the brief
- Return a detailed proposal breaking down the estimate by feature
- Identify risks and assumptions in their estimate
If an agency sends back a number without any questions, they're guessing.
One More Thing
The brief isn't a contract. It's a starting point. Expect the scope to evolve during the first week or two of the engagement as both sides learn more about the problem.
The goal isn't to have a perfect brief. It's to have a clear enough brief that everyone is estimating the same thing.
Need Help Writing Yours?
We've reviewed hundreds of project briefs. If you've got a draft and want a sanity check, send it over. We'll tell you what's missing and what questions developers will ask.
Send us your brief or email hello@akronlabs.dev.
Related reading:
- How Much Does MVP Development Cost in 2026? — understand what drives pricing before you send your brief
- Why Startups Outsource Their First Product — deciding whether to outsource or hire in-house
Akron Labs builds web applications for companies who need to ship fast. We help founders go from idea to production without the guesswork.