How to Quote Bathroom Tiling: Preparation to Finish

A bathroom can look ready for tile while loose sheeting, crooked walls and unclear trade handovers sit behind the finish. Knowing how to quote bathroom tiling means pricing what you can inspect and putting a firm hold point around what you cannot.

Do not start with a square-metre rate. Define the finished room. Inspect it. Measure each face and detail. Then cost the work in the order your crew will do it.

Define the finished bathroom before measuring it

“Tile the bathroom” is not a usable scope. Walk the room with the customer and mark every surface that will receive tile.

List the floor, full-height walls, partial-height walls, bath surround, shower area, vanity splashback, niches, ledges, window reveals, door returns and narrow edge faces. Record where tile meets paint, cabinetry, shower screens, trims and adjoining floors.

An opening may reduce the main wall area but add returns, corners, cuts and edge finishing. Do not deduct the opening and ignore the work around it.

Record which existing fixtures stay. Note the bath, vanity, toilet, floor waste, shower outlet, taps, mirrors and accessories. Mark who removes and reinstalls each item.

Assign supply responsibility before you take off materials. State who supplies:

• Field tile and feature tile.
• Mosaics, trims and edge profiles.
• Grout, sealant and adhesives.
• Waterproofing components.
• Drains, fixtures and accessories.
• Backing, boards and preparation materials.

Treat customer-supplied tile as a separate responsibility. You do not control its quantity, condition, shade, suitability or delivery date. Record who checks those points and what happens if the product arrives late, damaged or short.

Separate allowances from exclusions. Use an allowance when an item remains unresolved but is expected to form part of the job. Use an exclusion when the work sits outside your quoted scope.

An unselected tile may need an allowance. Relocating plumbing may be excluded and assigned to a licensed plumber. Keep those two decisions separate.

Inspect the room and set a demolition hold point

Photograph the full bathroom before pricing it. Take close photographs of cracks, staining, movement, damaged grout, loose finishes, penetrations and transitions.

Record access through the property. Note parking, stairs, floor protection, dust control, working-hour limits, material storage and debris removal. These conditions affect labour even though they add no tiled area.

Inspect every visible substrate. Check walls for plumb and flatness. Check the floor for plane, falls and transitions. Record damaged boards, drummy finishes, unsupported edges and visible movement.

The existing wall and floor finishes may still be in place. You cannot confirm the substrate behind them. Say so.

Set a demolition limit and a hold point. The quote can include removal of named finishes, followed by an inspection before concealed repairs continue. Photograph the exposed substrate and price any work beyond the stated limit before covering it.

Break tiling preparation costs into named operations. Useful lines include:

• Protect access areas and fixtures that remain.
• Remove specified finishes.
• Load and dispose of debris.
• Inspect the exposed substrate.
• Repair or replace backing up to [enter a measurable area, number of sheets or named surfaces].
• Flatten, patch or form the included surfaces.
• Clean and prime the substrate.

Define the preparation limit in a measurable way and state exactly what the quote includes. After demolition, treat work beyond that limit as a written variation and get approval before starting it.

Avoid “normal preparation included”. Normal to whom? Name the operation and its limit so the customer and crew can see what was priced.

Measure every tiled face and difficult detail

Measure the bathroom as separate planes. Keep the floor, each wall and every small face on its own takeoff line.

Create separate entries for niches, ledges, window reveals, bath edges, door returns, hob faces and exposed tile edges. Small faces can carry more cutting and finishing than a broad wall.

Record the length and width of each rectangular face using metric measurements. Keep products separate where the floor, walls, shower base or feature area use different tiles.

Mark every drain, tap, outlet, pipe, accessory and fixture position. A penetration removes little material but adds drilling, cutting, waterproofing and set-out work.

Record falls and floor transitions. Note where the tiled floor meets carpet, timber, vinyl or another tiled area. Write down the expected finished heights and who prepares the adjoining surface.

Put the 3/4/5 rule in the set-out check

Mark 3 units on one reference line and 4 units on the other. The two marked points should be 5 units apart when the corner is square. Use scaled multiples for a longer check.

Mark the intended start lines and feature alignments on the site sheet. Check likely edge cuts around doors, niches, baths and vanities before promising the layout.

Confirm the tile before setting the wastage allowance

Record the actual tile, not a loose description such as “large wall tile”. Capture its dimensions, thickness, orientation, pattern, edge condition and purchase unit.

Tile choice changes the work. A different size or pattern can change the set-out, number of cuts, edge details and value of usable offcuts. If the customer changes the product after acceptance, reassess labour and materials before ordering or laying it.

Build the tile wastage allowance from the selected product and layout. Start with the measured requirement. Add material needed for cuts, matching and pieces that cannot be reused. Add any spare stock the customer has agreed to keep.

Then convert the requirement into the supplier’s purchase unit. Keep pieces, sheets, trim lengths and boxes on separate lines. Round the order to complete purchase units rather than pretending every measured fragment can be bought.

Do not use wastage to hide poor measurement. Map the selected tile over each plane, count the full pieces and required cuts, then identify the offcuts that can actually be reused. Add agreed spare stock and round the result up to complete boxes, sheets or trim lengths.

Consider whether directional faces, veining, shade consistency or pattern matching prevent offcuts from moving to another surface. Record that decision instead of carrying a default allowance from an unrelated job.

If the tile has not been selected, keep the unresolved product visible as an allowance or issue an estimate for that part. Convert it to a fixed amount after the product, layout, edge finish and purchase units are confirmed.

Check the Australian handoffs before pricing waterproofing

Tile is the finish. It does not define the waterproofing assembly behind it.

Write the waterproofing quote scope as a boundary. Record the nominated assembly, required substrate condition, primer, corners and junctions, penetrations, drain connection, included extents, hold points and handover evidence. Tie preparation and application requirements to the selected system rather than a generic waterproofing line.

Record who performs each part of the work. Assign plumbing connections to the plumber. Assign electrical work to the electrician. State who supplies and installs backing for fixtures or a shower screen, who confirms the finished opening and who returns after another trade completes its part.

Add hold points for anything that must be inspected, tested or handed over before tiling continues. Do not invent a waiting period or inspection rule. Ask the body responsible for the question and write the answer into the job documents.

For a job in New South Wales, ask NSW Fair Trading (opens in a new tab) which licence or home building contract question applies to the planned tiling or waterproofing scope. For a Queensland job, put that question to the Queensland Building and Construction Commission (opens in a new tab). For another location, contact that state or territory’s licensing regulator.

Ask one direct question at a time. Which licence class covers the work? Which trade can perform the assigned handoff? Which customer document applies to the job? Write down the answer and change the quote scope if required.

Show each decision as an inclusion, exclusion or allowance. If waterproofing sits outside your scope, name who is expected to complete it and what finished condition you require before your crew starts laying tile.

How to quote bathroom tiling from labour and materials

Bathroom size alone does not determine price or duration. A compact room with niches, narrow returns, difficult access and many penetrations can take more work than a larger open floor.

Estimate labour by operation. Build crew-hour lines for protection, demolition, debris removal, substrate inspection, preparation, waterproofing, set-out, cutting, laying, edge finishing, grouting, sealant, cleaning and defect work.

Use your own loaded labour cost. Include the employment costs your business carries, not just the amount paid to the tradie for an hour on site.

Add direct materials from the takeoff. Include tile where you supply it, preparation products, waterproofing components, adhesives, grout, sealant, trims, consumables and protection materials.

Add delivery, disposal, equipment and confirmed subcontractor work where they are direct costs of this bathroom. Keep overhead separate, then apply your chosen markup to reach the selling price. The broader tradie labour, material, overhead and markup framework shows how to keep those buckets apart.

Use this internal worksheet. Do not replace it with the customer-facing quote.

Markup is what you add to cost to reach the selling price. Margin is profit as a share of the selling price. Mixing them can make a quote look healthier than the finished job.

Do not answer “how much should I charge?” with an invented area rate. Use your measured operations, loaded labour, current material costs, direct job costs, overhead and markup. Compare the result with completed bathroom jobs before issuing it.

The profit margin calculator can check the relationship between cost, selling price and margin once you have entered your own figures.

Turn the costing sheet into a quote the crew can follow

The customer quote explains what you will deliver. The internal costing sheet explains how you reached the price. Do not dump internal labour assumptions into the customer document.

Write the quote in the same sequence as the work. Make the preparation limit, waterproofing boundary, tile schedule, layout, edge treatment and supply responsibilities easy to find.

Use this copy-ready structure:

Customer and site: [name and address]
Quote number and date: [details]

Included tiled surfaces:
[list each floor, wall, niche, return, ledge, edge and transition]

Existing condition:
[visible finishes, damage, access and substrate observations]

Demolition limit:
[name the finishes and fixtures included for removal]

Post-demolition hold point:
[state what will be inspected before concealed repairs continue]

Included preparation:
[name each operation and its limit]

Waterproofing boundary:
[nominated assembly, substrate condition, primer, corners, junctions, penetrations, drain connection, included extents, hold points and handover evidence]

Tile schedule:
[product, dimensions, orientation, pattern and purchase responsibility]

Layout and edge treatment:
[start lines, feature alignment, trims and exposed edges]

Tile quantity:
[measured requirement, wastage allowance and agreed spare stock]

Allowances:
[list unresolved selections and the basis of each allowance]

Exclusions:
[list work outside the quoted scope]

Access and site requirements:
[parking, protection, storage, working hours and debris arrangements]

Expected job sequence or access dates:
[list the planned order of work and required access]

Variation process:
[changed or concealed work will be described, priced and approved in writing before it proceeds]

Payment terms:
[state the agreed payment stages or due terms]

Quote expiry:
[state the date or acceptance period]

Price and GST treatment:
[state the quoted amount and whether GST is included or excluded]

Acceptance:
[customer name, approval and date]

Ask the relevant state or territory licensing regulator which mandatory contract wording or customer documents apply to the planned scope. Put that wording in the quote or contract before sending it.

Make the GST treatment plain and consistent with your business position. Check ABN, GST and BAS questions with the Australian Taxation Office (opens in a new tab) rather than copying another business’s wording.

The quote template gives you a clean document base once the bathroom scope and internal costing are complete.

Stop and write a variation when the bathroom changes

A variation is not a note added to the final invoice. Write it before the changed work proceeds.

Describe the concealed condition or customer request. State the effect on scope, materials, labour, timing and price. Attach photographs where they show the problem. Get written approval, then release the crew to continue.

The Oak Street house example is electrical, but the document control is the same. Quote Q-1847 for R. Chen at 14 Oak Street was 1,105. The lined ceiling meant chasing was excluded. Extra cable and chasing became an approved 160 variation, so invoice INV-1847 was 1,265. These are sample currency units, not a rate card.

Use that process when demolition exposes damaged backing or the customer selects a different tile pattern. Stop. Describe the change. Price it. Get approval before covering the work.

Check actual vs estimated cost after completion

Close the bathroom against the same operations used in the estimate. Compare estimated and actual crew-hours, materials, delivery, disposal and subcontractor costs line by line.

Compare estimated hours with paid hours. Compare ordered boxes with used boxes. Check disposal, delivery and subcontractor invoices.

The Oak Street example also shows the difference between markup and margin. Against the original quote of 1,105, the job cost was 850 and profit was 255. Margin was about 23%, while markup was 30%.

Do not calculate profit from invoice INV-1847 at 1,265. The costs of the 160 variation are not given, so combining the invoice total with the original job cost would produce a false result.

Use the finished-job costing process for tradies when you review how to quote bathroom tiling against actual labour and material costs. Open the finished job, enter each actual cost under the original operation and fix one weak allowance before the next quote.