The SaaS Building Roadmap

Most SaaS founders fail not because they can't build, but because they build the wrong thing. This roadmap is designed to help you avoid that — from validating an idea all the way to charging real money.

Phase 1: Validate Before You Build

The graveyard of SaaS is full of well-built products nobody wanted. Spend at least a week here before writing a single line of code.

Find a real pain point

• Browse Reddit communities where your target users hang out (use SaasNiche to do this systematically)
• Look for threads where people complain, ask for workarounds, or describe friction in their workflow
• A good pain point has: frequency (people mention it often), intensity (people are frustrated), and spend signal (they're already paying for a partial solution)

Talk to 10 people

DM or email 10 people who match your target user. Ask:

1. "How do you currently handle [problem]?"
2. "What's the most annoying part of that process?"
3. "Have you paid for anything to solve this?"

If 7 out of 10 give you a similar answer — you have something.

The pre-sell test

Before building anything, create a landing page (use v0.dev or Carrd) with a pricing section and a "Join waitlist" CTA. Share it in 2–3 relevant communities. If people sign up with their email, validation passed.

Phase 2: Define Your MVP

Your MVP should do exactly one thing well. Not two things. Not three.

The MVP formula

"Who is it for?" + "What problem does it solve?" + "What's the one outcome they get?"

Write this in one sentence. If you can't, your scope is too broad.

Pick your stack

For speed, use what you already know. If you're starting fresh:

This stack lets a solo founder ship in days, not months.

Define done

List the 5 features that make up your MVP. Anything else goes on a "later" list. Be ruthless. A landing page, auth, one core feature, and Stripe is a complete MVP.

Phase 3: Build

This is where most developers spend 80% of their time. The goal is to flip that ratio.

Build in sprints, ship weekly

• Week 1: Auth + database schema + skeleton UI
• Week 2: Core feature working end-to-end
• Week 3: Stripe integration + basic onboarding
• Week 4: Polish, fix bugs, soft launch

Use AI tools aggressively

Tools like Cursor, Claude, and Copilot can write 60–70% of your boilerplate. Let them. Your job is to architect and make decisions, not type useState.

Don't gold-plate

• No custom design system on week 1
• No microservices
• No complex caching
• No multi-tenant architecture until you have multi tenants

Shipping beats perfect every time.

Phase 4: Charge From Day One

This is the most common mistake: building for months before charging anyone.

Set your pricing before you launch

Pick one of these models:

• Flat monthly: $29/mo, $49/mo — simple, easy to explain
• Usage-based: charge per API call, document, seat, etc. — scales with value
• One-time: $99–$299 lifetime — great for getting first revenue fast

For your first 10 customers, offer a Founding Member price (e.g., 50% off forever). This creates urgency and rewards early adopters.

Don't give it away free

A free plan sounds generous but attracts users with zero intent to pay. Start with a paid plan or a short trial. Free users give you noise, not signal.

Phase 5: Iterate Based on Real Usage

Once people are using and paying, your job shifts to listening.

Set up usage tracking

Use PostHog, Plausible, or Mixpanel. You want to see:

• Where users drop off in onboarding
• Which features they use most
• Which they never touch

Talk to churned users

Email every person who cancels and ask one question: "What was the main reason you left?" You'll learn more from 10 churned users than 100 blog posts.

Ship fast, kill features fast

• If a feature has been live for 60 days and nobody uses it, remove it
• If a feature is getting 80% of the usage, double down on it
• Your roadmap should be driven by data, not opinions

The Mental Model

Think of building a SaaS in three phases:

1. Problem/Solution fit — does the problem exist? Can you solve it?
2. Product/Market fit — do people pay and stick around?
3. Scale — can you grow it?

You cannot skip phases. Don't try to scale before you have retention. Don't obsess over retention before you have paying users.

Stay in the phase you're in.