What Affects the Cost
Timber type. Hardwood decks across Sydney's eastern suburbs (merbau, spotted gum, ironbark) need specific oil products designed for dense timbers at $31–$44/L. Treated pine in newer western suburbs absorbs standard products at $21–$26/L more readily.
Condition. A deck that gets a maintenance re-oil every 12–18 months is a quick job at $15–$25/m2. A deck neglected for 3+ years with grey, weathered timber needs heavy sanding and chemical stripping at $30–$45/m2, roughly double the cost.
Product choice. Oil (natural look, re-coat every 6–18 months) vs stain (coloured, 2–4 year life) vs paint (longest lasting, hardest to maintain long-term). Your choice affects both the initial cost and the ongoing maintenance cycle.
Fence complexity. Paling fences with narrow gaps are slow to paint. Both sides double the work. If the fence backs onto a neighbour's garden with overgrown plants, clearing access adds time.
Surface area. A compact courtyard deck (10–15 m2) is a fraction of a large entertainer's deck (40–60 m2). Long side fences at 1.8m height can have more surface area than you expect: a 20-metre fence is roughly 72 m2 when both sides are included.
Salt exposure. Coastal areas (Bondi, Manly, Cronulla) need marine-grade or salt-resistant products. Standard decking oils can wash out within 6–8 months in salt air conditions, while marine-grade products extend the interval to 12–18 months.
A small deck re-oil on timber in good shape in Ryde sits toward $500. A large merbau deck in Coogee needing a full strip-and-restain plus 20 metres of paling fence on both sides pushes toward $3,200.
Sydney-Specific Considerations
Eastern suburbs hardwood decks (Randwick, Coogee, Bronte, Maroubra). These suburbs are full of merbau and spotted gum decks that look rich and warm when freshly oiled but turn silver-grey within months if maintenance is skipped. In Sydney's sun, a merbau deck in a north-facing backyard needs re-oiling every 12 months. The key is a regular oil cycle: clean, light sand, re-oil. Intergrain UltraDeck or Cabot's Deck & Exterior Stain (Oil Based) are the most commonly specified products for these hardwoods. Once you let the maintenance lapse for 2–3 years, the restoration cost (heavy sand plus 2–3 coats) is three to four times what the annual maintenance re-oil would have cost.
Compact inner-city courtyards (Surry Hills, Newtown, Marrickville, Erskineville). Many inner-city Sydney homes have small courtyards rather than large yards. Deck areas tend to be compact (10–20 m2), which keeps the total material cost down, but most painters have a minimum charge of $400–$600 regardless of area. Fence painting in these areas benefits from shorter fence runs, and side access is usually tight, meaning painters may need to carry equipment through the house.
Coastal salt exposure (Bondi, Manly, Cronulla, Coogee). Any deck within a few kilometres of the coast faces accelerated degradation from salt spray. Standard decking oils wash out faster, and timber fibres break down more quickly. A good deck painter working in coastal Sydney will recommend products specifically formulated for salt-air conditions. The premium over standard oil is modest ($3–$5/L) and the extended coating life justifies the cost.
Lower North Shore and eastern suburbs slopes. Rear fences on sloping blocks (common in Mosman, Cremorne, and the eastern suburbs) can present genuine access challenges. If a fence drops down a steep slope, the painter may need scaffolding or trestles for the lower sections, adding time and cost. Raised decks on sloped blocks also need attention to the substructure (bearers and joists), which may be visible and need coating from below.
Lead paint on older fences. Sydney's inner-city and lower North Shore suburbs have significant numbers of pre-1970 homes. Timber fences on these properties may carry layers of lead paint. Under AS/NZS 4361.2:2017, lead paint must never be dry-sanded or dry-scraped. If the existing paint is sound, painting over it is the safest and most cost-effective approach. If the paint is peeling, a lead test ($10–$15 for a DIY kit) should be done before any prep work begins.
Hiring a Licensed Painter in NSW
In NSW, painting work over $5,000 (including GST) requires a licensed painting contractor. You can verify credentials through NSW Fair Trading. Most standalone deck or fence jobs fall below this threshold, but combined deck-and-fence work can exceed it. For jobs over $20,000, Home Building Compensation Fund cover is also required.
A good outdoor timber painter will:
Inspect the timber in person before quoting (not quote from a photo)
Specify the product brand and number of coats in writing
Recommend a product matched to your timber type and exposure
Detail the prep scope (cleaning method, sanding grade, any repairs)
Worth checking:
That the painter plans to sand grey, weathered timber before oiling (oil will not penetrate unprepped surfaces)
That a product matched to your timber type is specified (dense hardwoods need specialist oils, not generic products)
That the pressure washer setting is appropriate for the timber (softwood needs lower pressure to avoid fibre damage)
That the weather forecast allows 48–72 hours of dry conditions after the final coat
How We Calculate
Estimates are based on current licensed Painter rates in the Sydney metro area, adjusted for typical timber types and housing stock. All prices include GST. Figures cover standard residential deck and fence painting or staining. Structural timber repairs, new deck construction, and pergola painting are quoted separately.