Most quotes marketed as "fixed-price" in Bali still leave room to move — usually through a variations clause, a short exclusions list, or a vague scope document. This is what actually makes a price fixed, and the specific mechanisms that quietly reopen a number after you've signed.
Many contracts include a general "variations" category that lets the builder bill for anything not explicitly itemized in the scope document. If the scope is vague — "standard finishes," "as per design" without specifics — almost anything can later be classified as a variation.
Red flag: a variations clause with no cap, no pre-approval requirement, and no defined trigger conditions.
A provisional sum is a placeholder figure for an item not yet finalized — often tiling, sanitaryware, or lighting. It's a normal part of construction, but when provisional sums cover a large share of the build (not just fixtures) the "fixed" total is mostly aspirational.
Red flag: provisional sums covering more than a small fraction of total value, with no ceiling stated.
Excavation and foundation costs vary hugely by site — Uluwatu/Bukit limestone costs far more to cut than Canggu's softer, water-retaining rice-field subsoil, which itself often needs deeper footings or piling. A quote produced without a soil test is a guess on the single line item most likely to blow the budget.
Red flag: a "fixed" foundation price with no soil test behind it.
A builder confident in their number will walk through all five without hesitation. A builder who gets vague on the exclusions list or the change-order process is telling you, before you've signed anything, how the number is going to move later.
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