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.
