Bali Floods: A Tragic Reminder of Nature’s Power

In mid-September 2025, Bali endured its worst flooding in more than a decade after torrential downpours dumped over 385 millimeters of rain in just 24 hours in some areas.

The scale of the disaster was severe: rivers overflowed, key roads were cut off, bridges collapsed, and neighborhoods across Denpasar, Badung, Gianyar, and Jembrana were left underwater. As of this writing, at least 18 lives have been lost, with hundreds displaced and forced into emergency shelters.

Beyond the immediate human tragedy, the floods disrupted daily life and strained local infrastructure, from transportation to utilities. Tourism services, a lifeline of Bali’s economy, also faced temporary setbacks as flights were delayed and access routes to popular destinations were affected.

The event underscored just how quickly extreme weather can paralyze the island and why discussions around resilience, planning, and responsible development are more urgent than ever.

Why Flooding Remains a Challenge in Bali (Land Conversion & Zoning Issues)

Land conversion remains one of Bali’s most pressing challenges. Estimates suggest the island loses around 1,000 hectares of agricultural land each year, much of it repurposed into tourism developments, villas, and commercial projects.

Rice paddies and forests, which naturally absorb rainwater and regulate runoff, are being replaced by concrete and impermeable surfaces, leaving the land unable to handle heavy downpours. This shift has created conditions where rainfall that once soaked into the soil now floods roads and rivers within hours.

Compounding the problem is weak spatial planning and inconsistent enforcement of zoning rules. Construction too close to rivers reduces natural buffer zones, while illegal encroachment into vulnerable areas heightens disaster exposure.

Many drainage systems, designed decades ago for smaller populations, are now inadequate to serve today’s rapidly increasing urban density. When rivers burst their banks during extreme rainfall, blocked canals and insufficient stormwater infrastructure turn these otherwise seasonal rains into destructive floods, highlighting the fragility of Bali’s current urban and environmental balance.

Building Responsibly Through Proper Permits and Compliance

One effective way to reduce flood risk in buildings is through robust compliance with local zoning laws and building permits.

In Bali, permits such as PBG (Persetujuan Bangunan Gedung) and SLF (Sertifikat Laik Fungsi), the modern replacements of the older IMB system, are critical.

PBG ensures that design, structure, usage, and technical specifications meet government standards, including requirements for safe electrical and plumbing systems, environmental controls, and properly planned drainage.

SLF verifies that once completed, a building is safe, compliant with the approved design, functional for its intended use, and safe to occupy. It is mandatory before a structure can legally be used.

Proper elevation, drainage infrastructure plans, checking soil absorption capacity, ensuring setbacks from waterways, and building with materials that withstand heavy rainfall are all part of responsible construction practices that full compliance demands.

From Compliance to Investment Value: Why Location and Legal Zoning Matter

Buildings developed without correct permits or in zones unsuitable for construction are at much higher risk to other fallouts beyond flood, they are also at risk of legal penalties, forced demolition, and loss of investment value.

Properties with full permits, correctly zoned land, and compliance with drainage and spatial planning are more resilient to disasters, more trustworthy to buyers, and more likely to maintain their value.

Moreover, as awareness and regulation increase following disasters like these floods, investors are placing more emphasis on development that demonstrates responsible environmental planning. This means when a property is located in a well-zoned area with sound permits, it is far more attractive in the long term.

Pertama’s Commitment to Responsible, Resilient Property Development

At Pertama, we believe resilience begins with compliance. None of our projects are built via land conversion, we avoid acquiring green or agricultural land for non-intended zoning purposes. Every development is planned strictly in line with zoning rules, full PBG approval, and SLF certification.

We ensure proper drainage, elevation, and land use in all developments, so our properties are less exposed to flood risk. By adhering to these regulations, we not only protect lives and communities but also protect investment value.

With full legal and environmental compliance, our properties align with investor expectations for safety, durability, and long-term return.

The Path Forward

The recent Bali floods are a wake-up call. Nature’s extremes are becoming more common, and ignoring land use, zoning, or permit compliance only increases the danger for both the people and the property.

For investors and developers who want both security and legacy, assessing where and how a villa is built is increasingly of utmost importance. With strong legal foundations, full permit compliance, and correct zoning, investors can rest assured that their Bali real estate investment stands on solid ground, literally and legally.

Learn more about how Pertama Permit ensures secure, compliant property development in Bali.

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