The Aussie Paint-Your-Whole-Home Guide

Photo by Quilia on Unsplash

By the I Do It Yourself team — Jen and Mick.

Painting an entire house is the single highest-impact DIY project an Australian home owner will ever undertake. It’s also the one where the gap between “did it themselves” and “looks like a pro did it” comes down almost entirely to prep and patience — neither of which costs anything except time. This guide is for the home owner who has decided to take 2 weeks and repaint the whole interior of a 4-bedroom home, and wants the result to actually look professional when it’s done.

Honest budget: $1,200 to $4,000 in paint and materials for a 4-bed home, depending on whether you go bargain-bin Taubmans (don’t) or premium Dulux/Haymes/Murobond (do, you only paint once). A professional painter for the same job in 2026 will quote you $8,000 to $15,000, sometimes more in capital cities. Timeline: 7 to 14 days if you can dedicate full days to it, longer if you’re squeezing it into evenings and weekends. The big variable is dry time between coats, not how fast you can roll a wall.

What you’re getting into

Interior painting is 100% DIY-legal in Australia, no licensing needed, and the materials are all available at any hardware store. It is not, however, easy. A whole-house paint will involve roughly 600–900 m² of wall surface across a 4-bed home, plus ceilings, plus trim, plus doors. Each square metre needs to be washed, sanded, filled, primed (if it’s a colour change or new substrate), cut in, rolled, allowed to dry, and recoated. Multiply that by 700 m² and you understand why painters charge what they charge.

The good news: the work is repetitive, not technical. If you can paint one wall well, you can paint a whole house. The bad news: shortcuts compound. Skip the prep on one wall and you’ll see the patches forever. Use bargain paint and you’ll need three coats instead of two. Buy a cheap roller and you’ll get fluff in every metre of finish.

Tools and budget

  • Sundries: drop sheets (canvas $30 each — buy 4), painter’s tape (Frog Tape, never the yellow stuff), spackle/Polyfilla, sugar soap, sanding blocks (180-grit and 240-grit), TSP for kitchens — about $200 total
  • Cutting in: Purdy Clearcut or Wooster Silver Tip 50 mm angled brush ($35 each, buy 2), 2-inch trim brush, paint pail with magnetic brush holder
  • Rolling: Uni-Pro or Wooster microfibre roller frames ($25 each, buy 2), 270 mm covers ($12 each, buy 6 — one per coat per main colour), extension pole (telescopic 1.2–2.4 m $40)
  • Paint, ceiling: Dulux Wash&Wear Ceiling Flat or Haymes Expressions Ceiling — 10L tin $130–$160, you’ll need 2 tins for a 4-bed
  • Paint, walls: Dulux Wash&Wear Low-Sheen, Haymes Expressions Low-Sheen, or Murobond Pearl — 10L tins $200–$280, you’ll need 4–6 tins
  • Paint, trim: Dulux Aquanamel Semi-Gloss or Haymes Ultratrim — 4L tins $110–$140, you’ll need 2–3 tins for a 4-bed
  • Total paint+materials, 4-bed home: $1,500–$2,800 if you stick with one mid-range brand throughout

Phase 1: Plan colours and coverage

Jen here. Most people pick paint colours wrong. They look at chips at the hardware store, fall in love with one, and buy 40 litres of it. Then they paint a wall and discover that “Hog Bristle Quarter” looks completely different at 6pm in their west-facing lounge than it did under fluoro at Bunnings.

The right way: pick 3–4 colour candidates per room, buy sample pots ($10 each), and paint A4 swatches you can move around. Live with them for a week. Look at them at 8am, midday, 5pm and at night under your actual lighting. Whites are the worst for this — there are 200+ whites on the Dulux fan deck and the difference between “Vivid White” and “Natural White” is the difference between “feels like a hospital” and “feels like a home”. My defaults across a 4-bed home: Dulux Natural White or Haymes Lexicon Quarter for living areas, a slightly warmer Antique White USA or Whisper White for bedrooms, a deeper feature wall colour for one wall in the master.

Coverage: a 10L tin of quality paint covers about 100–110 m² per coat. Walls in a typical 4-bed (200 m² floor plan) total about 600–700 m². You’ll need two coats. Do the maths — you need about 14L per coat, so roughly 30L total per main wall colour, plus 10–15% wastage. Order from one paint shop in one go so the batches match — different batches of the same colour can vary slightly, and the variation shows up across a wall.

Phase 2: Prep — wash, sand, fill

Jen again. Prep is where the pros earn their money. A professional painter spends roughly 60% of the time on a job preparing surfaces and 40% applying paint. Most home owners spend 10% prepping and then wonder why their finish looks streaky. If you take one thing from this guide, take this: budget at least one full day for every two days of painting, and spend it on prep.

The order: clear the room (curtains down, furniture central and covered, switch plates off and bagged), wash everything with sugar soap (or TSP in the kitchen — there’s invisible grease everywhere within 3 metres of a stove), let dry, fill every nail hole and crack with Polyfilla or Selleys Spakfilla, let dry, sand with 180-grit on a sanding block, vacuum, tack-cloth wipe. For walls that have had a glossy paint or are getting a major colour change (white going to navy, or vice versa), prime with Dulux Prep-Lock or Zinsser Bullseye 1-2-3 — one coat is enough.

The two prep mistakes I see most often: (1) people skip the sugar soap and the new paint sits on top of a film of grime, peeling within 18 months; (2) people skip the fill-and-sand step on small dings, thinking “the paint will cover it” — paint never covers a dent, it highlights it. Spend the day. Do it once, properly.

Phase 3: Cut in and roll the walls

Jen here. With prep done, walls are the easy part. The technique: cut in the perimeter with a brush (around the ceiling line, around skirting, around door frames and architraves), then immediately roll the rest while the cut-in line is still wet. Cut-in and roll the same section in the same session — never cut in the whole room and then come back to roll, because the cut-in dries with a different sheen and you’ll see the brush marks where the roller didn’t reach.

I work in 2 m wide vertical sections. Cut in along the top, down both sides, and along the bottom. Then load the roller (about 1/3 paint, 2/3 dry — overload and you’ll drip; underload and you’ll streak), and roll the section in a “W” pattern, then cross-roll horizontally to spread, then finish with light vertical strokes from top to bottom for a uniform finish. Move to the next 2 m section. Two coats minimum on every wall, even if the first coat looks fine. The second coat is what gives you the depth and uniformity.

Mick here jumping in with a tip from years of helping mates: do the ceilings BEFORE the walls. I know it feels backwards but if you do walls first you’ll get ceiling-paint splatter on your finished walls and have to touch up forever. Order is: ceilings, then walls, then trim. Always. Roller ceilings with an extension pole — never up a ladder, you’ll wear your shoulder out by lunch on day one.

Phase 4: Trim, doors and ceilings

Jen here. Trim is the test. If your skirting boards, architraves and door frames look crisp, the whole house looks professional. If the trim has bleed-through, drips, brush marks or fuzzy edges, it doesn’t matter how perfect your walls are — the eye goes straight to the trim and the whole job looks amateur.

The technique: tape off where trim meets wall (Frog Tape — the yellow stuff bleeds and you’ll cry), use a 50 mm angled brush, load light, paint with the grain, and tip off with the lightest possible final stroke. Two coats. Cabinet-grade enamel like Aquanamel Semi-Gloss or Ultratrim — never wall paint on trim, it scuffs in a fortnight. Pull the tape while the paint is still wet (peel back at 45° away from the trim) — if you wait until it’s dry the dried paint film tears off with the tape and ruins the edge.

Doors: take them off the hinges if you can, lay them flat across two saw horses, paint one side, flip after 4 hours, paint the other side, allow 24 hours before rehanging. If you can’t take them off, paint in this order: top edge, hinge edge, panels (if any), top rail, middle rail, bottom rail, stiles, bottom edge. Use a 100 mm foam roller for the flat sections and a brush for any panel mouldings. Front doors get extra love — see the linked article for that one specifically.

Phase 5: Touch-ups and clean-up

Mick here. Two days of touch-ups at the end is the difference between “I painted my house” and “professional, what a great paint job”. Walk every room with a small angled brush, a 100 ml jar of leftover wall paint, and a torch. Hold the torch parallel to the wall to throw raking light across the surface — it shows every roller mark, every cut-in flaw, every spot where the second coat got thin. Touch them up. Move to the next room.

Decant a small amount of each colour into clearly labelled 250 ml jars and store them with the room name on the label — “Master Bedroom — Dulux Whisper White, Low-Sheen” — for the first time in three years one of the kids puts a chair through the plasterboard. You’ll thank yourself.

Clean-up: brushes need to be washed within 30 minutes of finishing, not at the end of the day — water-based paint hardens fast in the bristles. Roll the spare paint out onto newspaper, rinse the brush under running water until it runs clear, comb the bristles flat with a brush comb, hang to dry. A good Purdy will last a decade if you look after it. Drop sheets get folded paint-side-in and stored. Tape goes in the bin. Empty paint tins (lids off) sit in the sun for a week to dry the residue and then go in regular waste. Half-empty tins go in the shed, lid on tight, stored upside-down so the paint forms a seal at the top instead of a skin in the middle.

The team’s verdict

If we were painting a 4-bed home tomorrow, this is the run sheet. Day 1: planning, sampling, ordering paint. Day 2-3: prep — wash, fill, sand, mask. Day 4: ceilings throughout the house (one big push, one tin of ceiling paint at a time, extension pole). Day 5-7: walls, room by room, two coats per room with proper drying time between. Day 8-9: trim, skirting, architraves, door frames. Day 10: doors. Day 11-12: touch-ups, second-coat trim if needed, clean-up. Twelve days from “we should paint” to “house looks brand new”, working full days.

The mistake we see over and over: people start painting before they’re ready, run out of paint mid-wall, switch brands, get an unmatched batch, or skip prep because they want to see colour on the wall. Don’t. Spend the boring day on prep. Order one extra tin of paint per colour. Use Frog Tape, not the yellow stuff. Buy a real Purdy or Wooster brush, not a $4 disposable. The total extra cost of doing this properly versus cheaply is about $300 across the whole house. The visual difference is the difference between “did the owners paint it themselves?” and “wow, when did you have it repainted?”

FAQs

How much paint do I need for a 4-bed house? Roughly 30L of wall paint (15L per coat × 2 coats), 20L of ceiling paint, and 10L of trim enamel. Buy 10–15% extra for touch-ups and rooms that need three coats.

Dulux vs Haymes vs Taubmans? Dulux Wash&Wear and Haymes Expressions are both excellent two-coat-coverage paints. Murobond is premium, very low-VOC, beautiful. Taubmans budget lines often need three coats — the per-litre saving disappears in the extra coat.

Can I paint over old enamel trim with water-based? Yes, but you must sand to dull the gloss (180-grit), wash with sugar soap, and use one coat of bonding primer (Dulux 1Step Prep) before topcoating. Skip the prime and the new water-based will peel within a year.

How long between coats? Water-based paints are recoatable in 2 hours at 20°C. In winter or humid conditions, allow 4 hours. Don’t try to put a second coat on within 90 minutes — the first coat is still soft and the roller will lift it.

Do I need to prime new plasterboard? Yes. Use a dedicated plasterboard sealer (Dulux Prep-Lock, Haymes Sealbinda) — one coat — before topcoats. Skip this and the topcoat soaks in unevenly and you’ll see the seams and screw heads forever.

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