What is a PRD and How to Write One as a Non-Technical Founder
A Product Requirements Document doesn't need to be a 40-page enterprise artifact. Here's the lean version that gives dev teams what they need to ship — in 2 hours.
Table of Contents
A PRD — Product Requirements Document — is the bridge between your idea and a working product. It's not a specification document, it's not a contract, and it shouldn't take a week to write. For early-stage startups, a good PRD is 2–5 pages that answers the questions every engineer and designer needs answered before starting work. Here's the format we use with every founder before starting a build.
Why Bother With a PRD?
Without a PRD, every assumption lives in someone's head. The founder assumes the login screen works one way; the engineer builds it another; the designer creates a third version. These misalignments cost 3× as much to fix as they do to prevent. A PRD doesn't eliminate all misalignment — but it forces you to write down the assumptions that matter most before they become expensive bugs.
- Reduces mid-build surprises by 60–80% in our experience
- Forces you to think through edge cases before they cost dev time
- Gives the design team a brief without requiring you to design anything
- Creates a reference for scope disputes ('that's not in the PRD')
Section 1: Problem and Context (Half a Page)
Who is the user? What problem do they have today? What are they doing instead of using your product? What's the measurable outcome you want from this feature or release? Write this as narrative, not bullet points. Engineers and designers make better decisions when they understand why — not just what. Three sentences is enough if they're the right sentences.
Section 2: User Stories (The Core)
For each piece of functionality, write a user story: 'As a [user type], I can [action] so that [outcome].' Then write the acceptance criteria: specific, testable conditions that define 'done.' Example: As a dog owner, I can sign up with my email so that I have an account. Acceptance criteria: (1) I can enter my email and a password. (2) I receive a verification email within 60 seconds. (3) If my email is already taken, I see an error message. (4) After verifying, I'm taken to the onboarding flow. This is all an engineer needs to build sign-up correctly.
- User story format: 'As a [user], I can [action] so that [outcome]'
- Acceptance criteria: specific, testable, covers the happy path AND error states
- Write for the edge case: what happens if the user does the wrong thing?
- One story per feature, not one story per screen
Section 3: Out of Scope
List what you are explicitly not building in this version. This is as important as what you are building — it prevents scope creep, sets expectations, and forces you to prioritize. 'Out of scope for v1: social login (Google/Apple), password reset, profile photo upload, notification preferences.' Every item you put in out-of-scope is a conscious decision, not an oversight.
Section 4: Design References and Open Questions
Drop screenshots of apps whose UX you want to reference, with notes on what specifically you like. 'The booking flow should feel like Uber's — single action per screen, no decision fatigue.' List any open questions that need to be answered before build starts: 'Do we send a confirmation email at booking or at payment?' Open questions that aren't resolved before build starts become mid-sprint interruptions that slow everything down.
The PRD Template (Steal This)
Problem: [Who has what problem today, what's the context]. Success metric: [One measurable outcome]. User stories: [Format: As a [user], I can [action] so that [outcome]. Acceptance criteria: [testable list]]. Out of scope: [Explicit list]. Design references: [Screenshots + specific notes]. Open questions: [List anything that needs a decision before build]. Priority: [Must have / nice to have / later for each story]. The entire document should fit in a Notion page or a Google Doc. If it doesn't, you're writing a spec, not a PRD.
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