A fair Gold Coast jetty quote states the piles, approvals, hardware and exclusions
If one quote is $18,000 and another is $31,000, do not assume the cheaper builder is sharper. On canal work, missing pile repairs, approval costs, barge access or 316 stainless hardware can become a $5,000-$20,000 variation. Compare the written scope line by line before paying a deposit.
Quote scope
Materials and engineering
Approvals and payment
Licence and insurance checks
Red flags - walk away if you see these
What a compliant written quote has to make clear
A proper Gold Coast marine quote reads like a scope of work, not a text message. It should identify the contractor, licence details, site address, structure type, dimensions, materials, exclusions, GST treatment, payment stages and estimated timing. If the work becomes domestic building work over $3,300, Queensland contract rules become more formal. If the job is $20,000 or more, the paperwork should be more detailed again, including start timing, practical completion timing and clear treatment of allowances or price changes.
For a timber jetty repair, the quote should state whether it includes opening the deck, replacing joists, replacing bearers, replacing pile caps, refixing cleats and disposing of failed timber. For a pontoon installation, it should state pontoon dimensions, float type, gangway length, pile size, pile coating, freeboard, berthing use and whether approvals are included. For a full jetty rebuild, it should state the design basis, pile count, frame specification, decking, handrails, services and engineer involvement.
The best quote is not always the longest quote, but it should answer the questions that can cost money later. If a quote simply says "repair jetty" for $9,800, you do not know whether it includes 6 m² of decking or 20 m², 316 stainless or mixed screws, disposal or a pile check. That is not a bargain. It is an argument waiting to happen.
The exclusions that often become variations
Most disputes start with exclusions, not the base price. Marine sites have hidden conditions because the important parts are often below the deck, under the waterline or inside the approval pathway. A clear exclusion is not a problem. A vague exclusion is.
| Exclusion | Why it matters | Typical variation if needed |
|---|---|---|
| Pile replacement | Soft or moving piles change the repair from carpentry to structural work. | $1,800-$5,500 per pile |
| Barge access | Some canal homes have no practical street-side material path. | $1,200-$6,000 |
| Approvals and owner consent | Tidal works, water allocation or council land issues can stop work. | $1,500-$7,500 |
| Engineering changes | Vessel loading, wake or existing pile condition can require redesign. | $1,200-$5,000 |
| Seawall or revetment defects | A jetty tied into a failing edge structure will not stay straight. | $3,000-$25,000+ |
| Electrical and water services | Marine electrical work needs the right licensed trade and weather rating. | $1,800-$8,000 |
Ask each contractor to price the likely exclusions before you choose. If two quotes are close but one gives rates for pile replacement and the other does not, the clearer quote is often safer. The same applies to handrails, ladders, lighting and boat cleats. See the pricing guide for broader 2026 ranges across common marine line items.
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Deposits, progress claims and licence checks
Queensland deposit rules are strict enough that homeowners should know the numbers before they sign. For domestic building work up to $3,300, the usual maximum deposit is 20 percent. For $3,301-$19,999, it is generally 10 percent. For more than $20,000, it is generally 5 percent, with a limited exception where substantial off-site prefabrication represents more than half of the contract price.
Marine work can include off-site fabrication, especially pontoons and gangways. That does not mean any large deposit is automatically fine. If a contractor asks for more than 5 percent on a $60,000 job, ask them to explain the lawful basis in writing and show what is being fabricated off site. A sensible progress schedule might be deposit, approval milestone, material delivery, piling and frame, deck completion, then final defects. Paying ahead of completed work reduces your leverage.
Licence checking is simple and worth doing. Search the QBCC Licensee Register for the licence number and name on the quote. Make sure the licence is current, the business name matches the entity you are paying, and there are no conditions that obviously conflict with the work. For engineering, ask who the RPEQ engineer is and whether the engineering certificate will be handed over at completion. Keep the quote, approvals, engineering and receipts with your property records. They matter at sale time, during insurance claims and when a future buyer orders a structural assessment.
A cheaper option is sometimes the right call. If the jetty is structurally sound and you only need safe access for occasional kayak use, a small repair plus a maintenance plan may beat a full rebuild. If you plan to sell within 6 months, an inspection report and targeted safety repairs can be better than rushing a major upgrade. The wrong saving is choosing a quote that leaves approvals, piles or hardware vague.
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