Most Bali builders hide warning signs until you've already signed. Here are the 10 concrete red flags that tell you a builder will cause problems — and what builders do to disguise them.
Ask for NIB (PT company number) and SBU (construction licence). Check both at oss.go.id and lpjk.pu.go.id. If a builder hesitates, "doesn't have it handy," or the numbers don't match online — they're unlicensed. That's disqualifying regardless of how many villas they claim to have built.
A builder confident in their track record will hand you 3+ phone numbers to call without them on the line. If they want to "set up" the calls, manage them, or say "all my clients are busy right now" — they're filtering what you hear. Call unscreened clients asking: did the final price match the contract, and when did something go wrong?
Read the contract. If it contains "variations" as an open category with no cap and no requirement for your written approval before work starts — that clause is designed to let costs escalate after you've signed.
Foundation costs vary wildly by site. A quote for foundation work without a soil test behind it is a guess. When unforeseen conditions appear, you'll pay for the difference. Insist on a site survey before the foundation line is priced.
Calendar-based payment schedules ("20% at month 2") are red flags. Insist on milestone-based payments: you pay only after verified, completed work with photo/video evidence. If a builder resists this, they're telling you payment and delivery are decoupled in their model.
If a builder says "we'll sort it out as we go" instead of agreeing to document changes in writing before the work starts — that's preservation of ambiguity. Once the invoice comes, you have no proof of what was agreed.
You have a right to see the work in progress and document it. Any builder who says "that's not necessary" or "my photos are fine" is hiding something. You should be able to visit weekly and take photos without permission.
Delays happen, but a builder who regularly reschedules major milestones and treats it as routine is telling you the project pipeline is unstable. A builder who blames it on you ("you changed your mind") without documented change orders is shifting responsibility.
Time-and-materials creates perverse incentives: the builder profits from delays. A builder confident in their process will offer fixed-price as an option. If they refuse entirely, the price is designed to move.
If you ask "what exactly is included in MEP" and get a verbal walk-through that never becomes a written addendum — the builder is preserving their option to interpret "MEP" differently later. Everything material should be itemized and signed.
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