How to Quote Rendering Jobs

1. Render types and when to use them

The render system you recommend determines the material cost, application time, finish quality, and maintenance profile of the job. Choosing the right system at the quoting stage prevents scope creep and warranty disputes later.

Choosing the right system

The substrate dictates the base system. The customer's finish preference and budget determine the topcoat. Walk through this decision at the site inspection:

• Clay brick or concrete block: Cement render base + paint, or polymer modified base + acrylic/texture coat finish. Both work well. Acrylic systems cost more per square metre but save the painting cost.
• AAC panels (Hebel): Must use a polymer modified base coat designed for AAC (e.g. Dulux AcraTex Hebel High Build, Rockcote EcoRendr). Standard cement render bonds poorly to AAC and is not warranted by panel manufacturers.
• Polystyrene (EPS): Requires an EIFS-rated system with fibreglass mesh embedded in the base coat. Standard render will crack and delaminate.
• Fibre cement sheet: Flexible acrylic or polymer modified systems only. Cement render cracks at sheet joints due to thermal movement.
• Existing painted surfaces: Mechanical keying (angle grinding a crosshatch pattern) or complete paint removal, then bonding agent, then render. This doubles preparation time compared to clean masonry.
• Heritage (pre-1940 solid brick or stone): Lime render is the correct system. Cement render traps moisture in soft old bricks and causes spalling. Heritage work often requires heritage overlay approval.

2. Per-square-metre rates by render type

These rates are national averages for 2026, including materials and labour (supply and apply), excluding scaffolding. Adjust for your region using the table in section 8.

True cost comparison: cement render + paint vs acrylic

Customers often compare the per-sqm rate without accounting for painting. The true comparison:

This comparison is a useful tool when presenting options to customers. Acrylic render costs less overall when painting is included, and its longer repaint cycle makes it the better value over 20 years.

3. Substrate preparation and crack repair

Substrate preparation is the single biggest variable in rendering quotes and the most common source of underquoting. A clean, sound masonry wall needs 15 minutes of preparation per 10 sqm. A painted, cracked, or salt-affected wall can need 2-3 hours per 10 sqm. The difference is $5/sqm vs $25-40/sqm in preparation costs alone.

Preparation tasks and costs

The tap test

Before quoting any re-render or render-over job, tap the existing surface with a screwdriver handle every 300mm across the wall. Hollow sounds indicate delamination. Mark each hollow area with chalk. If more than 30% of the wall sounds hollow, the existing render needs full removal rather than patch repair. This changes the job from a re-coat ($40-70/sqm) to a strip-and-re-render ($60-105/sqm including removal and disposal).

Structural crack warning

Cracks wider than 5mm, cracks that are actively widening (check with tell-tales or pencil marks over 4-6 weeks), or cracks that follow a staircase pattern through mortar joints indicate structural movement. Rendering over structural movement is cosmetic only and will crack again. Note this in your quote: "Crack repair to rendered surface is cosmetic. Structural assessment and remediation of underlying movement (if present) is excluded from this scope and should be carried out by a structural engineer before rendering proceeds." This protects you from warranty claims when the crack reappears.

4. Materials: products, coverage, and pricing

Material costs typically represent 30-40% of the total rendering price, with labour at 50-60% and overheads at 10-15%. These are the main product categories and their current pricing.

Render products and coverage rates

Wastage allowances

Build wastage into your material quantities, not your labour rate. Standard allowances:

• Cement render on flat walls: 10% wastage
• Acrylic or texture coat: 12-15% wastage (product sticks to tools and buckets)
• Complex shapes, arches, reveals: 15-20% wastage
• Mesh and beads: 10% for cutting and overlaps

Wastage over 20% usually indicates an application problem (mix too wet, uneven substrate eating material, or trowel technique). If you are consistently wasting more than 15%, review your application method before adjusting your quotes upward.

5. Labour rates and productivity benchmarks

Labour is the largest cost component in rendering. Productivity varies significantly with render type, substrate condition, and access.

Productivity benchmarks (sqm per day, per renderer)

Labour rate benchmarks

Current market labour rates for rendering (2026):

• Sole trader renderer: $80 - $120/hour (varies by city and specialisation)
• Employed renderer (award + on-costs): $55 - $75/hour total cost to employer (including super at 12%, workers comp, leave loading)
• Apprentice/labourer (mixing, prep, cleanup): $30 - $45/hour total cost

A two-person crew (renderer + labourer) is the standard team for most rendering jobs. The labourer mixes render, carries materials, keeps scaffolding platforms clear, and does clean-up. Adding a labourer increases total cost by 35-45% but increases output by 60-80%, making it more efficient per square metre on jobs larger than 50 sqm.

Weather downtime

Rendering cannot proceed in rain, temperatures below 5°C (frost risk), temperatures above 35°C (flash drying causes cracking), or high winds (above 40 km/h for external work). In southern states during winter, expect 1-2 weather days per week. In northern states during summer, extreme heat may restrict work to mornings. Build a 15-20% weather contingency into your timeline estimate, and note in your quote that the completion date is weather-dependent.

6. Scaffolding and access costs

Any rendering work above 2-3 metres height requires scaffolding under Australian work health and safety regulations. Ladders are not acceptable as a working platform for rendering because the application requires two hands and sustained positioning.

Quoting scaffolding: who provides it?

Three approaches, in order of preference:

1. Include it in your quote (recommended). Get a scaffolding quote, add your handling margin (5-10%), and include it as a line item. You control the schedule, the scaffold company works to your timeline, and the customer sees one price from one contractor. This is the professional approach.
2. Quote it as a provisional sum. "Scaffolding: provisional sum $X,XXX (actual cost charged at invoice)." Use this when you cannot get a firm scaffold quote before submitting your rendering quote (e.g., the scaffold company needs a site visit you have not scheduled yet).
3. Exclude it (customer supplies). Only appropriate on builder-managed projects where the builder provides site scaffolding. Note the exclusion clearly: "Scaffolding by others. Rendering work cannot commence until compliant scaffolding is erected to all work areas."

Access cost traps

• Narrow side passages: Scaffold cannot be delivered by truck to the rear of the property. Manual carry adds $500-$1,500 to erection costs.
• Public footpath: Scaffolding over a public footpath requires a council permit ($200-$800 depending on council) and pedestrian protection (mesh, overhead protection). Add 1-2 weeks lead time for permit approval.
• Heritage-listed buildings: Scaffold fixings to the facade may be restricted. Check heritage overlay before quoting.
• Power lines: Scaffolding near overhead power lines requires an exclusion zone and may require the power company to install insulation sleeves. Allow $500-$2,000 and 2-4 weeks for the power company to attend.

7. Whole-house benchmarks

These benchmarks give you a sanity check on your detailed quote. If your itemised total is significantly outside these ranges, review your quantities and rates before submitting.

Timeline benchmarks

8. Regional price variation

Labour rates and material availability create significant price variation across Australia. Use these multipliers against the national averages in section 2.

9. Licensing by state and territory

Rendering falls under the solid plastering trade in all Australian licensing frameworks. Requirements vary by state.

10. Common quoting mistakes

1. Underquoting substrate preparation. The most expensive mistake in rendering. A renderer who quotes based on the finish product without properly assessing the substrate loses 20-40% of margin on preparation costs they did not price. Always do the tap test, check for paint, salt, and moisture, and price preparation as a separate line item.
2. Ignoring scaffolding in the price comparison. When customers compare quotes, they compare the bottom line. If your competitor excluded scaffolding (or the customer does not realise it is not included), your all-inclusive quote looks expensive. Always state clearly whether scaffolding is included or excluded, and note it in bold.
3. Quoting a lump sum on re-render work. Re-rendering is unpredictable. You cannot know the full extent of delamination, moisture damage, or substrate deterioration until you start removing the old render. Use a provisional sum or a two-stage quote: stage 1 covers removal and preparation (fixed price after inspection), stage 2 covers the new render (fixed price based on the now-exposed substrate).
4. Matching a product to the wrong substrate. Quoting cement render on AAC panels, or standard render on polystyrene, leads to product failure and warranty claims. The render manufacturer's technical data sheet specifies which substrates their product is approved for. If the substrate is not on the approved list, use a different product or get written technical approval from the manufacturer.
5. Forgetting the windows, doors, and penetrations. Rendering stops at window and door openings, but the reveals (the return surfaces around the opening) need to be rendered too. Reveals are slow to render (tight spaces, corner beads, careful finish) and are commonly missed in area calculations. Measure reveal surfaces separately and price them at 1.5-2x the flat-wall rate.
6. Underestimating weather delays. Quoting a 7-day job and finishing in 12 days because of rain costs you 5 days of lost productivity on other jobs, plus additional scaffolding hire. Build a 15-20% weather contingency into the timeline, and include a note that the completion date is weather-dependent.
7. Quoting without checking the paint colour chart. Acrylic and texture coat products come in a standard colour range. Non-standard or custom colours cost 15-25% more and have longer lead times (2-4 weeks). Confirm the customer's colour choice before finalising the quote, and note any price difference for custom colours.

11. Worked example: two-storey brick home, acrylic render

A typical whole-house rendering job in Melbourne. The customer wants a full external acrylic render on a 1990s two-storey brick veneer home. Clean face brick in reasonable condition, no existing render, no significant cracking. Standard colour from the Rockcote range.

Site measurements

• Total external wall area: 260 sqm (measured on site, deducting windows and doors)
• Window and door reveals: 45 lm (average 200mm depth = 9 sqm of reveal surfaces)
• External corners: 28 lm
• Control joints required: 16 lm (at floor level, max 6m centres)
• Substrate: clean clay brick, good condition, minor efflorescence on one wall
• Height: two-storey, full perimeter scaffold required

Quote breakdown

Sanity check

• Per-sqm rate (total ÷ wall area): $22,512 ÷ 260 = $86.59/sqm inc GST. This is within the expected range for a two-storey acrylic render in Melbourne ($52-68/sqm for render + $15-30/sqm for scaffolding = $67-98/sqm total).
• Whole-house benchmark: The benchmarks table (section 7) shows $11,000-$21,500 for acrylic render on a two-storey home, plus $4,000-$8,500 for scaffolding = $15,000-$30,000. The quote at $22,512 is in the middle of that range.
• Margin check: Estimated material cost approximately $7,800 (render products, beads, joints, primer, protection materials). Estimated labour cost approximately $6,500 (10 working days, two-person crew). Scaffolding cost $5,600 (supplier quote, with 10% handling margin = $6,200 in the quote). Total cost approximately $19,900. Margin approximately $2,612 ex GST (12.8%). This is thin for rendering; consider whether the per-sqm rates need adjustment upward. A target of 20-25% margin on a job this size would mean a quote of $24,875-$26,500 ex GST ($27,363-$29,150 inc GST).

Note: This worked example uses conservative rates. In practice, most renderers would quote this job at $25,000-$28,000 inc GST in Melbourne, reflecting a healthier margin and allowing for weather contingency.

Estimated timeline

• Scaffold erect: 1 day
• Pressure wash + dry: 1 day wash + 1 day drying
• Beads, joints, preparation: 1 day
• Base coat application: 4-5 days (260 sqm ÷ 25 sqm/day/person × 2 people = 5.2 days, rounded to 5)
• Base coat curing: 2-3 days (depending on weather)
• Finish coat application: 3-4 days (260 sqm ÷ 35 sqm/day/person × 2 people = 3.7 days, rounded to 4)
• Cleanup and scaffold dismantle: 1 day
• Total: 14-16 working days (3-3.5 weeks, weather permitting)

12. Presenting quotes that win work

Rendering is a visual trade. The customer is choosing someone to transform the look of their home. Your quote should reflect the quality of your work.

What to include in every rendering quote

1. Render system specified by name. "Rockcote Polymer Render in colour 'Barley White' over Rockcote Quick Render base coat" is specific and checkable. "Acrylic render, cream colour" is vague and invites disputes.
2. Substrate preparation scope. List what you will do to prepare the walls. Customers who receive a vague quote and a detailed quote choose the detailed one, even if it costs more, because they understand what they are getting.
3. Itemised line items. Preparation, base coat, finish coat, beads/joints, scaffolding, protection, cleanup. Each on its own line with quantity and rate. This protects you on variations and makes your quote look professional.
4. Before-and-after photos from previous jobs. Attach 2-3 photos of similar work you have completed. This is the most powerful sales tool in rendering because the transformation is dramatic.
5. Product warranty information. Most render manufacturers offer a 7-15 year product warranty when applied by an approved applicator. Mention this: "Rockcote offers a [X]-year product warranty on their render system when applied in accordance with their technical specifications."
6. Clear exclusions. List what is NOT included: painting (if cement render), structural crack remediation, electrical or plumbing modifications, landscaping repair from scaffold placement, asbestos testing or removal.
7. Quote validity period. 14-30 days. Material prices change, scaffolding availability changes, and your schedule fills. A quote with an open-ended validity becomes a liability.
8. Payment terms. Standard for rendering: 10% deposit on acceptance, progress claims at defined milestones (preparation complete, base coat complete), balance on completion. Avoid 50/50 splits (front-loaded risk for you if the customer cancels after the deposit).

Handling the "my mate can do it cheaper" objection

Rendering is one of the most visible trades on a house. A poor render job is visible from the street for decades. The response: "The render system I have specified (name it) carries a manufacturer warranty of X years when applied to their specifications. I use their recommended preparation process and application method. That is what the price reflects. A render that cracks, delaminates, or discolours in 3-5 years costs more to fix than the difference in quotes today." Let the work speak. Offer a site visit to a completed job if the customer is undecided.

13. Frequently asked questions

How much does rendering cost per square metre in Australia?

Cement render costs $30-60 per square metre, acrylic render costs $40-70 per square metre, and texture coat finishes cost $45-80 per square metre (supply and apply, 2026 rates). These rates include materials and labour but exclude scaffolding, which adds $15-30 per square metre for two-storey access. The national average across all render types is approximately $56 per square metre.

How long does it take to render a house?

A single-storey house with approximately 150 square metres of wall area takes 5-8 working days for a two-person crew doing cement or acrylic render, including preparation. A two-storey house with 250-300 square metres of wall area takes 8-14 working days. Texture coat systems and heavily prepared substrates take longer. Weather delays (rain, extreme heat, frost) can extend the timeline by 15-20%.

What is the difference between cement render and acrylic render?

Cement render is a sand-and-cement mix applied in two to three coats, is the cheapest option ($30-60/sqm), and requires painting after curing. Acrylic render is a polymer-modified product with greater flexibility and crack resistance, includes colour in the finish (saving painting costs of $12-25/sqm), and costs $40-70/sqm. When you include painting, acrylic render often costs less overall. Acrylic render is also more crack-resistant and has a longer repaint cycle (15-20 years vs 7-10 years for painted cement render).

Do I need a licence to do rendering work in Australia?

Yes, in most states. Rendering falls under solid plastering. The threshold varies: NSW requires a licence for work over $1,000, QLD over $3,300, VIC/TAS/ACT over $5,000, NT over $12,000, and WA over $20,000. SA classifies rendering under Painting and Decorating rather than solid plastering. All states require a Certificate III in Solid Plastering (CPC31020) or equivalent as the qualification pathway. Check your state regulator's current requirements before quoting.

How much does it cost to render a whole house in Australia?

A single-storey house costs $5,500-$13,000 for rendering (depending on render type and substrate condition). A two-storey house costs $12,000-$27,000 including scaffolding. Premium texture coat systems on large homes can exceed $30,000. The biggest cost variable is substrate preparation and whether scaffolding is required.

What substrate preparation is needed before rendering?

At minimum: high-pressure wash ($3-6/sqm), bonding agent or primer ($4-8/sqm), and corner beads at all external corners ($8-15/lm). Beyond that, preparation depends on the substrate condition. Painted surfaces need mechanical keying or paint removal ($15-40/sqm). Salt-affected masonry needs acid washing ($8-15/sqm). Cracked surfaces need crack repair ($15-50/lm depending on severity). Delaminated existing render needs full removal ($20-35/sqm). Substrate preparation is the most commonly underquoted element in rendering.

How do you quote for crack repair on existing render?

Hairline cracks (under 2mm) are quoted at $15-30 per linear metre for cutting back, filling, and mesh reinforcement. Structural cracks (over 2mm) are quoted at $25-50 per linear metre for wider cutting, structural fill, and 200mm mesh overlay. Areas requiring full render removal and replacement are quoted at $60-120 per square metre. Always note whether the repair is cosmetic or structural, and exclude structural remediation from your scope.

Should I include painting in a rendering quote?

For cement render: quote painting as a separate line item ($12-25/sqm for two-coat exterior paint) or list it as an exclusion. For acrylic render and texture coat systems: colour is part of the product, so painting is not required. This is worth highlighting when comparing total costs with cement render, as the integrated colour saves the customer $3,000-$7,000 on a whole-house job and eliminates a repaint cycle for 15-20 years.