Opinion of Probable Cost Calculator

How much will it take to customise your dream home?

Opinion of Probable Cost calculator for building projects, providing accurate early cost estimates for homes, renovations and extensions. Explore your potential renovation costs with the AIB cost calculator.

Do you need design and construction?

Which type of home best suits your preferences and budget?

Which type of block best describes your site?

Do you need demolition?

(Calculation is based on an average 150sqm single level home on an easy access block of land)

What size are you considering for your ideal renovation or extension?

Enter a value in M2 (Internal)

Kitchen

Number of kitchens

What level of finish would you like in your Kitchen

Level 1-5

Bathrooms

Number of bathrooms

What level of finish would you like in your Bathroom

Level 1-5

Ensuites

Number of Ensuites

What level of finish would you like in your ensuite

Level 1-5

Laundry

Number of laundries

What level of finish would you like in your laundry

Level 1-5

Stairs (Including Void)

Number of stairwells

Timber Decks

Open

Enter a value in M2

Covered

Enter a value in M2

Tiled Decks

Open

Enter a value in M2

Covered

Enter a value in M2

Driveway

Concrete

Enter a value in M2

Additional options you might want to include

Intercom/Security System

EV Charging

Wet Bar

Indoor Gas Fireplace

Air Conditioining

Solar Panels

1-2 Level Lift

Swimming Pool

Total

Opinion of Probable Cost Calculator

Opinion of Probable Cost calculator is designed to give homeowners a realistic guide to construction costs during the early planning phase. Drawing on award-winning building experience and strong local insight, each Opinion of Probable Cost estimate considers materials, labour, site conditions, and project complexity. This service supports confident budgeting for custom homes, home renovations, and extensions, helping clients move forward with clarity and confidence.