Interior Painting Cost: What Changes the Price?

The most common question before a paint job is “how much will it cost?” The honest answer is that interior painting costs are determined by several factors — and house size is only one of them. Two homes with the same floor area can have interior painting costs that differ by thousands of dollars, because the factors that actually drive cost are mostly about surface condition and preparation, not square metres.

This article explains what those factors are, gives realistic price ranges for South East Melbourne, and helps you understand why quotes for the same job can vary significantly.

Note: this article focuses on interior painting specifically. For exterior painting, roof painting, and specialised services, see our full pricing guide.

Interior painting cost is driven mostly by preparation, surfaces included, ceiling height and layout complexity — not just house size.

Guide Interior Painting Cost Ranges for SE Melbourne

As a guide, typical interior painting costs for South East Melbourne homes often fall into these ranges, depending on surface condition, access, products, preparation and what is included in the scope.

• Single room repaint: $600 – $1,500+
• 2-bedroom unit or apartment: $4,000 – $6,500+
• 3-bedroom house interior: $6,500 – $10,000+
• 4–5 bedroom house interior: $9,000 – $15,000+

These ranges assume walls, ceilings and trims are included, with standard preparation for surfaces in reasonable condition. Properties at the upper end of each range typically require more preparation, repairs or more complex access.

Per-square-metre rates for interior painting in SE Melbourne:

• Walls only (budget refresh): $15 – $35 per m²
• Walls, ceilings and trims (standard): $28 – $45 per m²
• Complex or high-ceiling work: $40 – $100+ per m²

What Actually Changes the Price

1. What surfaces are included

“Interior painting” covers a spectrum. Walls only — no ceilings, no trims, no doors — is the cheapest scope. Adding ceilings, skirtings, architraves, doors and window frames increases the scope and cost progressively.

Including doors and trims in a job can add 25–40% to the cost over a walls-only scope, depending on how many doors, frames and timber surfaces are included. The additional time for cutting in around frames, sanding and painting timber surfaces, and the additional coats often required for enamel trims is significant. The visual difference — sharp, complete finish versus walls-only repaint with old trims — is also significant.

2. Surface preparation required

This is the largest variable in interior painting cost and the one most frequently underestimated. A home in good condition with smooth walls, minimal cracking and surfaces that have been maintained recently will cost less to paint than one with accumulated wear, cracking plaster, water stains and surfaces that have been touched up inconsistently over years.

Preparation includes filling holes and cracks, sanding surfaces smooth, priming repaired and bare sections, treating mould where present, and sealing stains before topcoating. Each of these adds time — and time is the primary cost driver in painting.

A thorough preparation scope on a property with significant surface issues may add $1,000–$3,000 to the cost of an interior repaint, depending on condition. This is not excessive — it is the cost of doing the job in a way that is less likely to show the same problems again months later.

For a deeper breakdown of why preparation changes the result, see our guide to repairs before painting.

3. Number of rooms and layout complexity

More rooms means more work — but layout matters too. A home with high-traffic, interconnected spaces and complex architectural details takes longer to paint than an open-plan property with similar floor area. Stairwells, raked ceilings, built-in joinery, decorative cornices and rooms with multiple doors and windows all increase the time required.

4. Ceiling height

Standard ceiling heights of 2.4–2.7m can usually be painted from standard ladders or steps. Ceilings above 2.7–3m may require extension equipment. Ceilings above 3m or vaulted/raked ceilings may require scaffolding or elevated work platforms — which adds both equipment cost and time. High ceilings are common in older homes and in newer builds with architectural features.

5. Number of coats required

Two coats over a sealed, primed surface is standard. Where surface colour is being significantly changed — dark to light or light to dark — an additional coat may be required for complete coverage. Where surfaces have staining, bleed-through or uneven porosity, additional primer and topcoat coats may be needed.

6. Paint quality and type

Premium interior paints from major manufacturers — Dulux, Haymes, Taubmans — cost more than budget alternatives and are generally chosen for better coverage, durability and washability. For many full interior repaints, the material cost difference between budget and premium products may be only a few hundred dollars — a relatively small portion of the total job cost compared with labour and preparation.

Specialised products — washable finishes for high-traffic areas, moisture-resistant coatings for bathrooms, low-VOC products for nurseries — may carry additional material cost.

7. Occupied or vacant property

Painting an occupied home takes longer than a vacant property. Furniture needs to be moved, rooms need to be sequenced to minimise disruption, and care must be taken around belongings. An empty property with clear access throughout is the most efficient environment to paint.

How to Understand a Quote You’ve Received

If you have a quote for interior painting and want to understand whether it reflects what the job actually requires:

• Check what preparation is specified. If the quote says “interior painting” with a price but no preparation details, ask specifically what surface preparation is included — crack filling, priming, mould treatment, sanding.
• Check what surfaces are included. Confirm whether ceilings, trims, skirtings, doors and architraves are in scope or excluded.
• Check what products are specified. The quote should name the products being used, not just reference “quality paint.”

If any of these are vague or absent, the quote is missing the information needed to assess its value.

What’s Not Included in Interior Painting Costs

• Significant plaster repairs beyond standard crack filling
• Wallpaper removal before painting
• Lead paint testing or management on older properties (pre-1970 homes)
• Removal and reinstallation of light fittings or fixtures
• Moving large or heavy furniture (typically excluded)

A professional quote should specify what is and is not included so the risk of unexpected additions mid-job is reduced.

The Bottom Line

Interior painting cost is driven primarily by surface condition and preparation requirement, scope of surfaces included, ceiling heights and layout complexity — not just floor area. A property in good condition with straightforward access will cost less than one with significant surface issues, high ceilings or complex layout.

The difference between a $6,500 quote and a $9,500 quote for a similarly sized home is often explained by preparation scope, what surfaces are included, product choice, access and repairs — not simply by one painter being more expensive for the same work.

• See realistic pricing for all painting services
• See our interior painting service
• Request a free written quote

Frequently Asked Questions

How much does it cost to paint the interior of a 3-bedroom house in Melbourne?

A professional interior repaint for a standard 3-bedroom home in South East Melbourne often starts around $6,500, depending on the scope. Preparation, plaster repairs, surface condition, ceiling height and whether trims and doors are included are usually the main cost drivers.

What is the cheapest way to repaint a house interior?

Walls-only repaints excluding ceilings, trims and doors are the least expensive scope. However, a walls-only repaint leaves old trims in a home with new walls, which often looks incomplete. Budget for what the job actually requires rather than cutting scope to achieve a lower price.

Why does interior painting cost vary so much between quotes?

Because quotes include different things. Preparation scope, what surfaces are included, the number of coats and the quality of products all vary between painters. Compare scope before comparing price — two quotes for the same price may include very different work.

How long does interior house painting take?

A standard 3–4 bedroom home interior often takes around 3–5 working days, depending on scope and access. Homes with significant preparation requirements, high ceilings or extensive trim and door work can take longer.

Does ceiling height affect painting cost?

Yes. Ceilings above 2.7m may require extension equipment, and ceilings above 3m or vaulted ceilings may require scaffolding or elevated access. Both can add time and equipment cost.