Most people don’t think about repainting until the paint makes them think about it — a faded front door, a bit of flaking render, a hallway that’s quietly collected ten years of scuffs. So how often should you paint your house? For homes across the Hills District, the practical answer is every 5 to 10 years, though it swings a fair bit depending on whether it’s a sheltered bedroom or the sun-blasted western wall out the front.
Key Insights:
- Every 5–10 years: Most homes need repainting within this window — interiors last around 5–7 years, exteriors 5–10.
- Heat is the real enemy: In the Hills District and Western Sydney, strong UV and 40-degree summers fade sun-facing walls, timber and front doors faster — often every 4–7 years.
- Watch the surface, not the calendar: Chalky, cracking or peeling paint and mould on shaded walls are the true signs it’s time to repaint.
Here’s how that plays out in real terms.
How often to repaint the interior
Interior paint has an easy life compared to what’s outside, so it lasts longer. Bedrooms and living rooms generally look good for 5 to 7 years — and in practice, most homes get repainted because the owners are over the colour before the paint has actually failed.
The rooms that wear faster are the obvious ones. Hallways, stairwells and kids’ rooms cop constant contact, so every 3 to 4 years is normal. Kitchens and bathrooms deal with steam and regular wiping, and do best on a similar 3-to-4-year cycle in a moisture-resistant finish. Ceilings barely get touched — they’ll happily go 8 to 10 years unless something’s leaked on them.
How often to repaint the exterior (and why Western Sydney is harder)
This is where the local climate earns a mention. Western Sydney runs hotter than almost anywhere else in the city — 40-degree summer days aren’t unusual — and that heat, along with strong UV, is what wears exterior paint down. Fading and chalking always show up first on the north and west-facing walls taking the brunt of the afternoon sun.
| Exterior surface | Typical repaint interval |
| Rendered / masonry (most newer Hills estates) | 8–10 years |
| Timber and weatherboard | 4–7 years |
| Front doors, sun-facing window frames | 3–5 years |
Render holds paint reasonably well, which suits a lot of the newer estates around Kellyville, Rouse Hill and Bella Vista. Timber moves with the heat and needs more frequent attention. In the leafier, older pockets — parts of Dural, Glenhaven and Cherrybrook — shaded southern walls can also pick up mould, which is a common reason mould keeps coming back after painting if the surface isn’t treated properly first.
Signs it’s time to repaint
Skip the calendar and just look at the paint. It’s time when these show up:
- Chalky, faded colour — rub the wall, and powder on your hand means the paint is breaking down
- Cracking, flaking or peeling
- Gaps opening up in the caulking around windows and doors
- Mould or dark staining on shaded walls
- Any bare timber showing through — best not to let that one sit
If a couple of those sound familiar, the paint has stopped protecting the house and is just decorating it — often not that well, either.
Making a paint job last longer
Two identical homes painted the same week can look completely different five years on, and it almost always comes down to prep and product. Paint applied over a dirty or unsealed surface won’t bond properly — that’s the single most common reason a job fails early. Beyond good prep, a quick wash of the exterior once or twice a year, keeping leaves away from timber, and touching up small chips before they spread will genuinely add years to the job.
The best time to repaint in the Hills District
Exterior painting wants dry, mild weather — not 40-degree heat, and not the middle of a wet spell — so spring and autumn are the sweet spots out here. Those months tend to book out, so winter is a good time to sort out a quote for spring work. Interiors, on the other hand, can be painted comfortably any time of year, which makes the cooler months ideal for a refresh inside. There’s a bit more detail on this in Decor8’s exterior painting service page.
FAQs
How often should you paint your house?
Every 5 to 10 years for most homes — interiors around 5–7 years, exteriors 5–10. Hot, sunny conditions like Western Sydney’s shorten that for sun-facing surfaces.
How often should you repaint an exterior in Western Sydney?
Usually every 5 to 10 years, but the region’s heat and UV mean render tends to last 8–10 years while timber and sun-facing surfaces often need repainting every 4–7.
How do I know if my house needs repainting?
Look for fading or chalky paint, cracking or peeling, gaps in the caulking, mould on shaded walls, or exposed timber. Any of these means it’s time.
Can I just touch up instead of repainting?
Touch-ups are fine for small chips, but they rarely blend on faded paint. If the wear is widespread or the colour has shifted, a full repaint looks far better.
Not sure where your home sits? Decor8 offers free onsite quotes for house painting across the Hills District and Western Sydney — a quick look is usually all it takes to know whether you can wait another year or two. Feel free to request a free onsite quote or call 0404 842 708 whenever it suits.