How to Estimate a Software Project When You're Still Figuring It Out

SaNdun SriMal — Sat, 21 Jun 2025 16:16:56 +0000

Estimation is one of the most uncomfortable parts of any software project. You’ve got an idea, maybe a few requirements jotted down, and someone asks:

“How much is this going to cost?”

Or worse: “Can you build this in 6 weeks?”

If you've ever thrown out a number and immediately regretted it, you're not alone.

In this post, I’ll break down how to approach rough estimates in a way that’s:

Practical,
Defensible, and
Adaptable—even if the project is still fuzzy.

No fluff, no selling—just real ways to think about timelines, budgets, and feasibility.

Why Rough Estimates Matter (Even If They're Wrong)

Early estimates aren’t about precision. They’re about framing reality before you spend time and money.

A good rough estimate helps you:

Catch mismatches between scope and budget early
Avoid wasting time scoping impossible features
Prioritize what actually matters
Set reasonable expectations with clients, teams, or investors

The goal is not to be exact, but to be directionally accurate.

First: Define What “Estimate” Means to You

When someone says “Can I get an estimate?”, ask back:

Do they mean a dollar figure?
A timeline?
A team size or cost breakdown?

Clarifying the goal helps you focus. A “2-month, \$30k MVP” is more useful than a vague “medium-sized project.”

What You Actually Need to Estimate

Forget the full spec. To build a useful estimate, try to identify:

Project Type
Are we talking about a mobile app? A SaaS dashboard? A chatbot with LLM integration?
Core Features
Focus on essentials. Think: auth, dashboards, chat, admin tools, etc.
Complexity Triggers
Anything that adds risk or scope creep—real-time sync, multi-language support, external APIs, etc.
Non-Functional Requirements
Things like scalability, compliance, uptime targets. They can double your budget if you’re not careful.
Budget Range
Yes, ballparks are fine. “Under \$20k” vs. “\$100k+” is a big shift in planning and architecture.
Desired Timeframe
Do they need it soon, or is this a long-term rollout? Are we talking weeks or quarters?

Three Ways to Approach a Rough Estimate

1. Use Relative Projects

If you’ve done something similar before, use that as a benchmark:

“We built X for \$40k in 10 weeks. This is about 80% of that.”

Just be honest about how similar the projects really are.

2. Think in Time Blocks

Estimate using dev-weeks:

Basic auth and user setup = ~1–2 weeks
A simple dashboard = ~2–3 weeks
Admin features = ~1–2 weeks

Multiply by average hourly/daily rate (e.g., \$75/hr × dev time × team size).

3. Use a Quick Estimation Tool

If you want a fast, structured estimate to get the conversation started, you can try something like this software estimation form. It lets you describe the project, pick a budget range, and get back an estimated cost and timeline—along with suggestions for making the scope more feasible if needed.

It's not a final quote, but it's useful for ballpark planning—especially before talking to agencies or developers.

What Makes Estimates Fall Apart

Be careful of:

Missing context (e.g., “build a chat system”—but for how many users?)
Overconfidence in best-case timelines
Ignoring edge cases, which often account for 30% of dev time
Not including PM, QA, or design—dev time is only part of the total

Also: the more stakeholders you have, the more coordination you’ll need. That adds time.

Better Than Perfect: Use Phases

Break projects into:

MVP / Core build
Post-launch feedback fixes
Phase 2 improvements
Scale / production hardening

Estimate only Phase 1 to start. That’s where the real learning begins anyway.

TL;DR — How to Estimate Smarter

You don’t need every detail to make a useful estimate.
Be honest about complexity and constraints.
Think in terms of effort, not just features.
Use tools and past projects to anchor your numbers.
Build in flexibility: scope can change, estimates should too.

Final Thought

No one loves estimation, but everyone needs it. The earlier you tackle it—even roughly—the more clarity you get for everything that follows.

And remember: the goal isn’t to be perfectly right. It’s to be usefully close.

💬 Have a strategy or tool you use for early estimates? Share in the comments—I’d love to hear how others approach this.

DEV Community: SaNdun SriMal