Free Construction Calculators & Tools/Project Timeline Estimator

Project Timeline Estimator

Estimate project duration based on type, size, and complexity. Generates phase breakdown with milestone dates and weather contingency recommendations.

Project Details
Project Complexity

Duration

12-16 mo

Phases

7

Completion

Dec 2027

Project Timeline
Mobilization & Excavation
Substructure
Superstructure
MEP Rough-in
Finishes
External Works
Testing & Commissioning
Month 1Month 7Month 14
Phase Breakdown
Mobilization & Excavation1 mo(M1-M1)
Substructure2 mo(M2-M3)
Superstructure4 mo(M4-M7)
MEP Rough-in2 mo(M8-M9)
Finishes3 mo(M10-M12)
External Works1 mo(M13-M13)
Testing & Commissioning1 mo(M14-M14)
Key Milestones
Project StartMonth 1
Excavation CompleteMonth 1
Foundation CompleteMonth 3
Structure CompleteMonth 7
MEP Rough-in CompleteMonth 9
Finishes CompleteMonth 12
HandoverMonth 14
Weather & Contingency
Weather Contingency15days
Estimated CompletionDec 2027

Notes:

  • Duration model for Villa / Single House: 17 months × (GFA ÷ 1,000 m²)^0.35, plus about 0.3 months per extra floor and 2 months per basement level
  • Complexity factor: 1x applied
  • Phases are shown in sequence for simplicity; in practice they overlap
  • Preliminary estimate only (typically ±20-30%); excludes design and approval time
  • Summer months (Jun-Aug) add weather contingency in hot climates
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REFERENCE INFORMATION

This tool provides standard reference data compiled from industry sources.

Note:

• Data is provided for quick reference and may not reflect the most current standards or specifications.

About This Calculator

The Project Timeline Estimator helps project managers and planners create preliminary construction schedules for projects across the UAE and Gulf. Estimate project duration based on type (residential, commercial, industrial), size, and complexity factors. Generate phase breakdowns with milestone dates and weather contingency recommendations specific to Gulf climate conditions.

When to Use This Calculator

  • Developing preliminary schedules for tender submissions
  • Estimating project duration during feasibility studies
  • Planning phase milestones for client presentations
  • Factoring weather contingencies for Gulf summer conditions
  • Creating baseline schedules before detailed P6 planning

How to Use This Calculator

1

Select Project Type

Choose villa, apartment building, commercial, industrial/warehouse, hotel or hospital.

2

Enter Project Size

Input gross floor area (GFA), number of floors, or other relevant size metrics.

3

Set Complexity

Choose standard, complex or luxury; this multiplies the duration by 1.0, 1.25 or 1.5.

4

Review Timeline

Get estimated duration, phase breakdown, and key milestones with weather contingency.

Typical Scenarios in UAE & Gulf Projects

Villa in Dubai

A 500 m² G+1 villa (2 floors, no basement, standard finishes). The calculator estimates 12-16 months of construction, about 14 months in its phase breakdown: mobilisation and excavation 1, substructure 2, superstructure 4, MEP rough-in 2, finishes 3, external works 1 and testing and commissioning 1, with handover in month 14. Design and permits come before this.

Office Tower in Dubai

A 45-floor commercial tower of 35,000 m² GFA with 2 basement levels. The calculator estimates 32-44 months, about 38 months: mobilisation and excavation 3, substructure 6, superstructure 11, MEP rough-in 6, finishes 8, external works 3, testing and commissioning 1. In practice these phases overlap, so use this as a first check on a detailed programme.

Warehouse in KIZAD

A 20,000 m² single-storey warehouse. The calculator estimates 11-15 months, about 13 months with handover in month 13, and flags summer weather contingency depending on the start month.

Frequently Asked Questions

Summer months (June-August) reduce outdoor productivity by 30-50% due to extreme heat. Add 10-15% contingency for projects with significant outdoor work. Indoor work is less affected. Ramadan may reduce productivity by 15-20% depending on workforce composition.

Preliminary estimates are typically ±20-30% accurate. They're suitable for feasibility studies and tender pricing but should be refined with detailed planning (Primavera P6) once contracts are awarded. Always validate with project-specific factors and contractor input.

Building permits: 2-6 months depending on emirate and project complexity. Civil Defense approval: 1-3 months. Municipality final inspections: 2-4 weeks. Always start approvals process early and factor in potential revision cycles.

Take Your Calculations Further

This calculator reflects the logic built into Arkan's construction management platform.

Last Updated: January 2026

Standards Reference: CIOB Code of Practice for Project Management, PMBOK Guide

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