Estimate project scope, timeline, and resource requirements using multiple estimation techniques including bottom-up, top-down, and analogous estimation methods for accurate project planning.

Project Estimation Table of Contents [Overview]( overview) [When to Use]( when to use) [Quick Start]( quick start) [Reference Guides]( reference guides) [Best Practices]( best practices) Overview Accurate project estimation determines realistic timelines, budgets, and resource allocation. Effective estimation combines historical data, expert judgment, and structured techniques to minimize surprises. When to Use Defining project scope and deliverables Creating project budgets and timelines Allocating team resources Managing stakeholder expectations Assessing project feasibility Planning for contingencies Updating estimates during project execution Quick Start Minimal working example: Reference Guides Detailed implementations in the references/ directory: Guide Contents [Three Point Estimation (PERT)](references/three point estimation pert.md) Three Point Estimation (PERT) [Bottom Up Estimation](references/bottom up estimation.md) Bottom Up Estimation [Analogous Estimation](references/analogous estimation.md) Analogous Estimation [Resource Estimation](references/resource estimation.md) Resource Estimation [Estimation Templates](references/estimation templates.md) Estimation Templates Best Practices ✅ DO Use multiple estimation techniques and compare results Include contingency buffers (15 25% for new projects) Base estimates on historical data from similar projects Break down large efforts into smaller components Get input from team members doing the actual work Document assumptions and exclusions clearly Review and adjust estimates regularly Track actual vs. estimated metrics for improvement Include non development tasks (planning, testing, deployment) Account for learning curve on unfamiliar technologies ❌ DON'T Estimate without clear scope definition Use unrealistic best case scenarios Ignore historical project data Estimate under pressure to hit arbitrary targets Forget to include non coding activities Use estimates as performance metrics for individuals Change estimates mid project without clear reason Estimate without team input Ignore risks and contingencies Use one technique exclusively

project-estimation