Buying property in Bali? Check drainage and access before the wet season

Look beyond the weather on viewing day

A beautiful villa on a dry afternoon tells you little about how its grounds and access road perform during heavy rain. BMKG’s 2 October outlook anticipates a later-than-usual start to the 2026–2027 rainy season across much of Indonesia. That regional forecast is useful context for planning inspections; it does not establish whether an individual Bali property will flood. Our recommendation is to make drainage and access part of the buying brief before you commit, even when the viewing conditions look ideal.

BMKG — Indonesia rainy-season outlook 2026–2027, published 2 October 2026 ↗

Use risk maps to prepare better questions

Start with the property’s exact location and review the relevant hazard information in BNPB’s InaRISK map. Save the layer, location and date you reviewed so a surveyor can understand your starting point. BNPB says the information represents relative locations and is not intended for legal or civil-engineering purposes. Treat map screening as a way to identify questions for a site investigation. A reassuring map view cannot replace an inspection, establish land rights or confirm planning permission.

BNPB — InaRISK map and usage limitations ↗

Ask for the property’s rain and repair history

Request dated records of water entering buildings, pooling in the grounds, blocked drains and repairs to walls or slopes. Ask what happened, what work followed and whether the same issue returned. Photographs, maintenance logs and repair invoices give an independent inspector more to work with than a general assurance that everything is fine. If records are incomplete, identify the gap in your inspection brief rather than treating the absence of records as proof that no problem occurred.

Follow the water beyond the boundary

Ask a suitably qualified independent surveyor or engineer to assess levels, drainage routes, retaining structures and where runoff ultimately goes. A drain inside the property is only one part of the picture. Clarify who maintains any shared channel, whether discharge arrangements need further verification and what neighbouring construction could change. Request a written explanation of findings and proposed work, with the assumptions clearly stated. Arrange any wet-weather observation only when conditions are safe; do not enter floodwater to test a route.

Include the road in the investment assessment

Walk or inspect the normal arrival route as well as the villa itself. Ask about low points, past road closures, shared-road maintenance and practical access for emergency or service vehicles. For a rental property, consider how access issues could affect guest arrivals and operations. For a retirement home, focus on reliable everyday journeys. Have your adviser verify any access rights separately; physical access during a viewing does not establish the legal right to use it.

Make the findings useful for your buying decision

Use inspection findings to request itemised remedial quotes and clarify ongoing maintenance responsibilities. Add verified costs and realistic allowances for disruption to your own budget before comparing properties. There is no universal drainage discount or guaranteed return to apply. If you are considering a Bali property, tell Vivo Asia Group the area, intended use and stage of your search through our enquiry form. We can help you organise the next questions and the support you need to move forward with a clearer picture.