How to compare Sydney bathroom renovation quotes

Make a comparison sheet before comparing totals

Put the quotes side by side and record the room size, retained fixtures, layout changes and finish level assumed by each contractor.

Ask each business to price the same written scope, with optional upgrades listed separately.

If 1 quote includes full-height wall tiling and another includes only wet-area walls, the difference is a scope decision you can resolve before choosing a contractor.

Check these line items

• Site protection, demolition, waste removal and access arrangements.
• Floor preparation, wall substrate and any provisional repair allowance.
• Plumbing rough-in, drainage changes and electrical work.
• Waterproofing system, installation records and inspection arrangements.
• Tile supply allowance, measured area, laying pattern, trims and grout.
• Vanity, basin, toilet, bath, tapware, mirror and accessories by product code.
• Shower screen, ventilation, painting, final cleaning and handover.
• Approvals, insurance where applicable, GST and the process for variations.

Turn allowances into choices you can price

A tile allowance is useful when you know whether it covers supply only, the allowed square metres and any delivery or wastage assumption.

A fixture allowance should have enough detail to compare it with products you would actually choose.

Ask what happens if your selection costs more or less, and whether handling charges or margins apply to that difference.

For work that can't be measured until demolition, request the assumption, the assessment method and the approval process for any extra work.

Assess a lower quote on its scope

A lower price can reflect a simpler layout, stocked products or an efficient construction method.

It can also represent a different allowance, so ask for clarification in writing before adding your own assumed inclusions.

Compare the final clarified versions and keep the preferred alternatives as separate priced options.

Get useful answers before signing

A complete quote names the contracting business, describes the work and gives you an understandable payment schedule.

Request specific answers for any item described only as standard, as required or by owner.

Keep an email trail connecting those answers to the final contract, including the product schedule and drawings.

Check the written contract and payment stages

NSW's official guidance requires a written contract for residential work above $5,000 and a more extensive contract above $20,000.

The maximum deposit is generally 10%, and eligible work above $20,000 requires Home Building Compensation cover; confirm how the rules and any exemptions apply to your project.

Ask a qualified adviser to review unfamiliar terms before signing, and compare each progress payment with the work stage it describes.

Official guidance: NSW Government: residential building contracts.