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MEP Cost Estimator Calculator

Reference: Order-of-magnitude estimate

💰 MECH

Free MEP cost estimator. Get an order-of-magnitude combined mechanical, electrical and plumbing budget for a project from built-up area, number of floors, project type and grade.

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📐 DETAILED CALCULATIONS

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📋 ASSUMPTIONS & BASIS

Order-of-magnitude estimate

Design criteria, governing codes and assumptions.

ℹ About This Calculator

Before detailed design, clients and consultants need a combined mechanical, electrical and plumbing budget to frame a project. This estimator gives an order-of-magnitude MEP cost from the built-up area, number of floors, project type and grade, using typical per-square-metre rates split across the HVAC, electrical, plumbing and fire disciplines, so you can seed the cost plan and test the brief against the budget.

Per-m² MEP rates vary widely with building type, grade, location and specification — a warehouse, an office and a hospital are worlds apart. The estimate is for early budgeting and brief-testing only, carrying a wide uncertainty band. Replace it with discipline BOQs measured from drawings at current rates as the design develops.

Concept MEP Budget Method

Order-of-magnitude estimate

Step 1 - Select a base per-m² MEP rate for the project type and grade.
Step 2 - Multiply by the built-up area for the headline MEP budget.
Step 3 - Split across HVAC, electrical, plumbing and fire by typical percentages.
Step 4 - Adjust for height/floors, location factor and specification grade.
Step 5 - Report the total, the discipline split and a per-m² benchmark.

Worked Example

A 10,000 m² Grade A office at a representative MEP rate yields a headline MEP budget, then split roughly into HVAC, electrical, plumbing and fire shares with a per-m² benchmark — enough to anchor the project cost plan before detailed design.

MEP Budgeting Notes

Top-down before bottom-up

A per-m² rate gives a fast top-down budget that is invaluable at brief and feasibility stage. As soon as there are drawings, a bottom-up measured BOQ per discipline replaces it and the two are reconciled.

Grade and location

Grade (basic to premium) and location (labour and material markets) are the biggest swing factors after building type. Apply them consciously rather than using a single global rate.

Discipline split

The HVAC/electrical/plumbing/fire split helps allocate budget and spot when a brief is skewing one discipline. Treat the percentages as typical, not fixed.

Frequently Asked Questions

What does MEP cost per square metre depend on? +

Building type and grade above all — a basic warehouse, a Grade A office and a hospital have very different MEP intensity. Location, height and specification then adjust the rate.

How is the MEP budget split between disciplines? +

Typical splits allocate the largest share to HVAC, then electrical, then plumbing and fire, but the mix shifts with building type. The estimator applies representative percentages.

How accurate is a concept MEP estimate? +

It is order-of-magnitude, for framing a budget and testing the brief. The reliable figure comes from measured discipline BOQs later.

Does building grade matter? +

Yes. Higher grade means more redundancy, better controls, higher specification and finishes, which lifts the per-m² rate significantly.

Can I use it for value engineering? +

It helps compare the budget impact of grade or system choices at a high level, but detailed value engineering needs measured quantities and priced options.