Paint Cost Calculator Australia — Materials & Labour
Room details
Standard Australian ceiling height is 2.4 m. New builds often use 2.7 m or 3.0 m.
Each standard door deducts 1.62 m²
Each window deducts 1.44 m²
Professional rates are typically $35–$45/m² in Australian capital cities, including preparation, undercoat, and 2 coats of finish.
Cost estimate
Area breakdown
Paint
Cost
Wall area = perimeter (2 × length + 2 × width) × height. Standard deductions: door = 1.62 m² (900 × 1,800 mm), window = 1.44 m² (1,200 × 1,200 mm). A coverage rate of 12 m²/L is used — conservative, consistent with AS/NZS 2311 guidance and typical for two-coat application on plasterboard. A 10% waste factor is applied. Paint is rounded up to the nearest 4 L tin. Labour rates are indicative for Australian capital city markets in 2026 and include preparation, masking, and cleanup. Regional areas may vary.
Frequently Asked Questions
How much does it cost to paint a room in Australia in 2026?
A typical bedroom (3.5 m × 3 m × 2.4 m ceiling) costs approximately $600–$1,200 for professional painting including preparation, two coats of mid-range paint, and cleanup. A larger lounge room (5 m × 4 m) costs $900–$1,800. DIY material costs for the same rooms are roughly $80–$200 depending on paint tier. Prices in Sydney, Melbourne, and Brisbane are at the higher end; Adelaide, Perth, and regional areas are typically lower.
What is the difference between budget, mid-range, and premium paint in Australia?
Budget paints ($25–$35/L, e.g. Taubmans Endure, Wattyl I.D.) offer acceptable coverage and washability for low-traffic areas like bedrooms. Mid-range paints ($45–$55/L, e.g. Dulux Wash & Wear, Haymes Surface Prep Plus) have better opacity, durability and washability — suitable for living areas and hallways. Premium paints ($65–$80/L, e.g. Dulux Aquanamel, Haymes Ultra Premium) offer superior stain resistance, gloss retention, and longevity — recommended for kitchens, bathrooms, high-traffic areas, and trim. Spending more on premium paint typically reduces repainting frequency, which is usually the better long-term value.
How many coats of paint do I need?
For new plasterboard: 1 coat of sealer/undercoat plus 2 coats of topcoat. For repainting a similar colour: 2 coats. For changing from a dark colour to a lighter one: 2–3 coats, or 1 coat of stain-blocking primer plus 2 topcoats. For going from white to a very dark colour: 2 coats is typically sufficient with modern high-hide paints. Always allow full dry time between coats — typically 2–4 hours in normal conditions.
Should I DIY or hire a professional painter in Australia?
DIY painting saves 60–75% of the total cost but requires time, preparation skill, and the right tools (roller, cut-in brush, drop sheets, masking tape, extension pole). For a straightforward repaint in the same colour, DIY is very accessible. For fresh plaster, complex colour changes, high ceilings, trim painting, or preparation of damaged surfaces, a professional painter will achieve a significantly better result. In Australia, professional painters typically quote per square metre (walls) or per room. Always get at least 2–3 quotes and check for QBCC, VBA, or equivalent licensing in your state.
How many litres of paint do I need per room?
A standard bedroom (3.5 m × 3 m × 2.4 m ceiling, 1 door, 1 window) needs approximately 5–8 litres for two coats of walls. Adding the ceiling adds another 3–4 litres. Most Australian paint retailers stock 1 L, 2 L, 4 L and 10 L tins. For best economy, use this calculator to get your estimate, then round up to the nearest 4 L tin — having a little extra ensures you can do touch-ups with the same batch number later.
How to use this calculator
- Enter room dimensions — measure length and width in metres. Use internal dimensions (inside the walls, not the external house footprint).
- Enter ceiling height — the standard Australian ceiling height is 2.4 m. New builds commonly use 2.7 m or 3.0 m. Check the actual height if unsure.
- Check "Include ceiling" if you are painting the ceiling. Ceiling paint is typically a different product to wall paint — it may need to be calculated separately if using a different brand or sheen.
- Enter doors and windows — the calculator deducts a standard door (900 × 1,800 mm = 1.62 m²) and window (1,200 × 1,200 mm = 1.44 m²) per unit. Adjust if your openings are significantly different.
- Select coats and paint tier — two coats is standard for most repaints; three coats for dark-to-light colour changes or fresh plaster.
- Select DIY or professional — the professional labour estimate includes preparation, masking, and cleanup at typical 2026 capital city rates.
- Click "Calculate paint cost" to see your material and labour breakdown.
Worked example: A bedroom 4.5 m × 3.5 m, 2.4 m ceiling, ceiling included, 1 door, 1 window, 2 coats, mid-range paint ($50/L), DIY. Wall area = 2 × (4.5 + 3.5) × 2.4 = 38.4 m² gross. Deduct 3.06 m² → 35.34 m² net walls. Ceiling = 15.75 m². Total = 51.09 m². Paint = 51.09 × 2 ÷ 12 × 1.10 = 9.37 L → 3 × 4 L tins (12 L). Material cost = 12 L × $50 = $600.
Understanding your results
The net wall area is your gross wall perimeter area minus the deductions for doors and windows — this is the actual paintable surface. The total paintable area adds the ceiling if selected.
Litres required includes a 10% waste allowance for spillage, roller nap absorption, and touch-up. The 4 L tin count is rounded up to the nearest tin — it is always better to have a little extra paint so you can match the batch number for future touch-ups. Most Australian paint manufacturers print the batch number on the lid; buying from the same batch ensures a consistent colour match.
The material cost is calculated on tin litres (not the exact litres required), reflecting the real purchase cost. The professional labour estimate is indicative for Australian capital city markets in 2026 — rural and regional areas often have lower labour rates, while premium suburbs can be higher. The rate includes surface preparation, masking, two coats of finish, and cleanup.
Common mistakes: Not allowing for the extra coat on fresh plasterboard (sealer + 2 topcoats = 3 total); ordering the exact amount with no buffer; painting over dirty or glossy surfaces without sanding or priming; and buying different batch numbers for the same room, which can produce a visible colour shift.
Room painting guide for Australian homes
Interior painting is one of the most accessible DIY home improvement tasks — the difference between a good and a poor paint job is almost entirely in the preparation, not the painting itself. Here is what you need to know before you start.
Surface preparation
Preparation accounts for roughly 70% of a professional painter's time on any job. For existing walls: wash down with sugar soap to remove grease and grime (particularly in kitchens and bathrooms), sand glossy surfaces with 120-grit to provide a key for the new paint, and fill cracks and holes with a flexible filler such as Polyfilla or Spakfilla before sanding flush. For fresh plasterboard (Gyprock): always apply a plasterboard sealer or PVA-based primer first — painting over bare plasterboard without sealing results in patchy absorption and uneven sheen.
Sheen levels
Australian paint manufacturers offer flat (matt), low-sheen, semi-gloss, and gloss finishes. Low-sheen (also called satin) is the most popular for living areas and bedrooms — it is washable without the shine of semi-gloss. Semi-gloss is recommended for kitchens, bathrooms, and wet areas due to better moisture resistance and scrubability. Flat paint is used for ceilings — it hides imperfections well and the lack of reflectivity prevents shadows from ceiling undulations being highlighted.
Choosing paint in Australia's climate
Australia's diverse climate affects paint performance. In humid coastal areas (Sydney, Brisbane, north Queensland), mould-resistant additives are worth paying for. In dry inland areas (Adelaide, Perth inland), low-VOC water-based paints dry quickly and are less affected by dust. In alpine areas (ACT, alpine VIC), allow longer drying times in cold conditions — most Australian paints require a minimum ambient temperature of 10°C for application. Avoid painting in direct sunlight on hot days (above 35°C), as the paint skin dries too quickly, trapping solvents underneath.
Getting painter quotes in Australia
Professional painters in Australia typically quote per square metre of paintable surface, per room, or as a total project price. For interior repaints, expect $35–$45/m² in capital cities for a standard 2-coat repaint including labour and materials. Always ask for: the paint brand and product being used; number of coats; what preparation is included; whether the quote is for supply-and-apply or labour only; and whether GST is included. Check QBCC (QLD), VBA (VIC), NSW Fair Trading, or equivalent licensing in your state — painters doing work over a certain value threshold require a licence.
Australian standards and references
- AS/NZS 2311:2017 — Guide to the Painting of Buildings. Covers surface preparation, paint selection, application methods, and finishing for interior and exterior painting in Australian conditions.
- Master Painters Australia (MPA) — Industry body representing professional painters across Australia; publishes technical guidance and training resources for members.
- NATSPEC — National Building Specification used by architects and builders; includes painting specifications for new construction work and commercial projects.
- HIA (Housing Industry Association) — Publishes guidance on painting standards in new residential construction, including acceptable tolerance levels for finish quality.
- Dulux, Haymes, Taubmans technical data sheets — Each major Australian paint manufacturer publishes coverage rates, dry time, recoat time, and VOC data for their products. Always verify coverage against the product's technical data sheet for the specific product you are using.