5 min read
Old gutters cause more problems than most people realise. A rusted gutter doesn’t just look bad - it overflows into your walls, pools water against your foundation, and can cause thousands of dollars in water damage to areas of your home you can’t see.
If your gutters are past their use-by date, here’s what replacement actually costs in Perth and what drives the price.
Average Cost Ranges
For a typical Perth home (3-bedroom, 150-200m² footprint):
| Gutter Type | Cost Per Metre (Installed) | Typical Full House |
|---|---|---|
| Colorbond Quad | $30-$45/m | $2,500-$4,500 |
| Colorbond OG (Ogee) | $35-$50/m | $3,000-$5,000 |
| Colorbond Half-Round | $40-$55/m | $3,500-$5,500 |
| Colorbond Square Line | $35-$50/m | $3,000-$5,000 |
These prices include materials, labour, removal and disposal of old gutters, and downpipe connections. They don’t include fascia board replacement (if the timber behind the gutter has rotted) or gutter guard installation.
What Affects the Price
Gutter Profile
The most common profiles in Perth:
Quad gutter - the standard half-round profile seen on most Perth homes. Economical and handles Perth’s rainfall well. The go-to choice for straightforward replacements.
OG (Ogee) gutter - a decorative profile with a front face that suits traditional and Federation-style homes. Slightly more expensive due to the more complex profile.
Half-round gutter - a deeper semicircular profile with higher capacity. Good for large roof areas or areas with heavy tree debris. Popular on newer builds.
Square Line - a modern, angular profile that suits contemporary homes. Clean lines, good capacity.
The profile choice is partly aesthetic (matching the home’s style) and partly functional (capacity for the roof area it’s draining).
Total Length
A typical Perth home has 40-80 metres of guttering. Larger homes, homes with complex roof lines (multiple hips and valleys), or homes with verandas and carports have more gutter length and therefore higher costs.
Height and Access
Single-storey homes are straightforward. Two-storey homes require scaffolding or elevated work platforms, which adds $500-$1,500 to the total cost depending on the extent of access needed.
Fascia Board Condition
The fascia is the timber board behind the gutter that it bolts to. If old gutters have been leaking for years, the fascia may be rotted and need replacing before new gutters can be installed.
Fascia replacement adds $25-$40 per metre for timber, or $35-$55 per metre for Colorbond fascia cladding. For a home with extensive fascia damage, this can add $1,000-$3,000 to the project.
Downpipes
If the existing downpipes are serviceable and compatible with the new gutter profile, they can be reused. If they’re corroded, damaged, or the wrong size, replacement adds $30-$45 per downpipe (including brackets and connections).
Gutter Guard
Adding gutter guard during a gutter replacement is the most cost-effective time - the gutters are accessible and the guard can be integrated with the new installation.
Gutter guard costs $25-$40 per metre installed, adding $1,500-$3,500 for a full house. Whether it’s worth it depends on how many trees overhang your roof - if you’re cleaning gutters twice a year because of leaf fall, guard pays for itself within a few years.
When to Repair vs Replace
Repair Makes Sense When:
- Rust or damage is limited to a short section
- The majority of gutters are in good condition
- Leaking is at a join or corner that can be resealed
- The gutters are less than 15 years old
A section replacement (removing and replacing a few metres) or reseal job is significantly cheaper than full replacement - typically $200-$800 depending on the extent.
Replace Makes Sense When:
- Rust is widespread (multiple sections affected)
- Gutters are visibly sagging despite bracket tightening
- Pinhole leaks are appearing in the gutter body (not just at joins)
- The gutters are original to a home built before 2000
- You’re having other roof work done (restoration, repainting) and the gutters look tired
Patching old gutters that are generally deteriorated is false economy. You’ll spend money on repairs every year or two, and the ongoing leaking causes fascia and wall damage between repairs.
Signs Your Gutters Need Attention
From the ground:
- Visible rust spots or streaks
- Sagging or uneven sections
- Water staining on the fascia or walls below the gutter line
- Overflow during moderate rain (not just heavy storms)
- Plants growing in the gutters (debris has accumulated enough to support plant life)
During rain:
- Water sheeting over the gutter edge instead of flowing to downpipes
- Dripping from gutter joins or corners
- Water pooling at the base of downpipes rather than flowing away
From a ladder (if safe):
- Pinhole rust in the gutter floor
- Separated joins between gutter sections
- Damaged or missing brackets
- Sediment buildup that won’t flush with a hose
Colorbond vs Other Materials
Colorbond steel is the standard for gutter replacement in Perth. It’s colour-matched to roof colours, rated for Perth’s UV exposure, and carries a manufacturer warranty. It’s effectively the only material used for residential gutter replacement in WA.
Aluminium gutters are available but uncommon in Perth. They don’t rust (a genuine advantage in coastal areas) but they’re more expensive, not as readily available in matching colours, and most Perth gutter installers work primarily with Colorbond.
PVC/plastic gutters exist but aren’t suitable for Perth’s UV exposure. They become brittle and crack within a few years.
Combining Gutters with Roof Work
If you’re having a roof restoration, it’s the ideal time to assess and replace gutters:
- The roof is already being accessed, reducing setup costs
- Scaffolding or edge protection is already in place
- New gutters look far better alongside a freshly restored roof
- The gutter installer can coordinate with the roof restoration schedule
We can include gutter assessment and replacement in a restoration quote, or we can refer you to a specialist gutter installer who we work with regularly.
The Bottom Line
Gutter replacement isn’t glamorous, but it’s one of those jobs where the cost of not doing it exceeds the cost of doing it. Leaking gutters cause wall damage, foundation issues, and fascia rot that are all more expensive to fix than the gutters themselves.
If your gutters are original to a home built before 2000, they’re at or past their expected life. Get them assessed, and if they’re done, gutter replacement is straightforward. Get a free quote online. The peace of mind of knowing your rainwater is going where it should is worth the investment.
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