Buying a Micro-SaaS? The “Code Inspection” Checklist for Non-Coders (5 Steps)

Buying a Micro-SaaS? The “Code Inspection” Checklist for Non-Coders (5 Steps)

Key takeaway: You don’t need to code — you need proof the app is maintainable, deployable, and not held together with duct tape.

You wouldn’t buy: A house without an inspection. But people buy SaaS businesses every day without checking the foundation: the code and deployment setup.

Financial due diligence is easier — revenue proof is visible. Technical due diligence scares non-coders because sellers often “protect IP” by hiding the repo.

So the real question becomes: Is this a real business… or a fragile wrapper around an API that breaks next week?

Good news: You don’t need to read JavaScript to spot a mess. You just need a few proxy signals.

Step 1: Ask for the Tech Stack (No stack = no deal)

Verdict: If the stack isn’t standard, you’re buying a future hiring problem — not a scalable asset.

Ask this exactly: “What’s the exact stack — frontend, backend, database, hosting?”

Green flags: These are common stacks that are easy to hire for later.

• React, Next.js, Node.js
• Tailwind CSS
• Postgres (often via Supabase)

Red flags: These usually create a maintenance nightmare.

• Obscure languages nobody hires for quickly
• “Custom proprietary framework”

Reality check: If the seller built their own framework, you’re not buying a business — you’re buying dependency on one person.

This is basic SaaS technical due diligence: if the stack is standard, you can always hire help.

Step 2: Interrogate the Deployment Path (How do updates go live?)

Key takeaway: If deploying requires manual SSH steps, expect higher breakage and slower fixes.

Ask one question: “How do I push an update live?”

Green flag: One-click or simple deploy via Vercel / Heroku / Supabase.

Red flag: “You SSH into a VPS and run scripts manually.”

Manual deployments usually mean higher maintenance cost, more downtime risk, and slower bug fixes.

Simple scales: If your goal is to grow or resell, the deployment path must be replicable. Complex manual setups break the model.

Example reference for scalable, replicable products:

Browse Ready-Made Apps (examples of scalable setups)

Step 3: Ask for ONE Screenshot: package.json (Secret weapon)

Verdict: One file can reveal whether the app is maintained — or a time bomb of old dependencies.

If it’s JavaScript: Ask for a screenshot of package.json (just that file).

You’re looking for age: This isn’t about “understanding code” — it’s about spotting neglect.

What to check:

• Are core dependencies ancient (like from 2020–2021)?
• Is the framework version very old?

Old dependencies often mean heavy technical debt. Updating them can break the app — so you’re buying a renovation project, not a cashflow asset.

Step 4: Run a Lighthouse Audit (Zero-code quality signal)

Key takeaway: Lighthouse scores expose neglect fast — messy builds often show weak performance and best practices.

Do this in Chrome: Open the app landing page → Right Click → Inspect → Lighthouse → Analyze.

Look at:

• Performance
• Accessibility
• Best Practices
• SEO

Pattern you’ll notice: “Spaghetti” builds often produce weak performance and best-practice scores. Clean builds tend to score better because the builder cares about structure.

You’re not hunting perfection — you’re looking for obvious neglect.

Step 5: Check the “Bus Factor” (Docs exist or walk away)

Verdict: If setup lives only in the seller’s head, you’re one bug away from being stuck.

Ask this: “Is there a README.md that explains setup, keys, and deployment?”

Green flag: Written docs + setup steps + environment variables list.

Red flag: “It’s easy, I’ll explain on Zoom.”

Zoom explanations don’t transfer. Written documentation does.

No docs: You’re one unexpected error away from the app stalling.

Conclusion: Trust, but Verify

Key takeaway: If a seller resists these five checks, assume they’re hiding technical debt.

You’re buying cashflow: Not a hobby that forces you into bug-fixing. If the seller creates friction around these checks, treat it as a red flag.

At Ecom Chief, we pre-vet the tech stack and ensure apps are built on modern, standard frameworks so you aren’t left holding the bag.

Final CTA

Verdict: The easiest way to avoid tech debt is to buy apps that were built to be handed over — not “held hostage” by a developer.

Stop guessing: If you want a cleaner acquisition path, start with vetted apps that are built for business owners, not just developers.

Browse our Vetted Ready-Made Apps