Karangasem Land Use Codes

The Regulatory Layer Below the RTRW

The RTRW spatial plan establishes the zone classification for a parcel — whether it can be developed for resort use at all — but it does not specify the detailed rules governing what can be built, at what height and density, with what setbacks, and under what design constraints. That level of operational detail is provided by two instruments: the RDTR (Rencana Detail Tata Ruang, or Detailed Spatial Plan) at the sub-district level, and the Perda Bangunan Gedung (Building Regulation Peraturan Daerah) at the regency level.

In practice, the RDTR is the more important instrument for development planning, because it provides the parcel-level development envelope within which building permits (IMB/PBG) are assessed. Where an RDTR exists for the relevant sub-district, it supersedes the more general regency building regulation for the specific parameters it covers. Where no RDTR has been adopted — which is the case for some of the Sidemen corridor sub-districts, where the RDTR is still in preparation — the regency building regulation and the provincial baseline standards apply.

Building Height: The 15-Metre Constraint

The 15-metre building height limit is arguably the most consequential design constraint for resort development in Bali. It derives from the Bali Province spatial policy articulated in Provincial Regulation 16/2009 — the implementing regulation for the Balinese Cultural Landscape spatial plan — which establishes height limits grounded in the principle that the built environment should remain visually subordinate to the natural and sacred landscape .

For Sidemen Valley resort design, the 15-metre limit is simultaneously a constraint and a design opportunity. The constraint is real: it rules out mid-rise hotel tower typologies and requires that resort programmes with high key counts be disaggregated across the site in pavilion or villa clusters rather than consolidated in a single vertical structure. The design opportunity is that the pavilion-and-cluster typology mandated by the height limit is precisely the typology that luxury hospitality guests and operators prefer for premium product — it creates the spatial generosity, the view integration, and the sense of immersion in the landscape that define the category of product for which the Sidemen corridor is suited.

Density Controls and Site Coverage

The Karangasem building regulation and applicable RDTR provisions establish maximum site coverage (koefisien dasar bangunan, or KDB) and maximum floor area ratio (koefisien lantai bangunan, or KLB) parameters that limit the intensity of development on any given parcel. For tourism zone parcels in the Sidemen corridor, the standard parameters are:

KDB (site coverage): typically 30 to 40 percent of total site area . This means that built footprint — the area of ground occupied by structures, including covered outdoor spaces — may not exceed 30 to 40 percent of the parcel area. For a 5,000 square metre parcel, the permitted building footprint is 1,500 to 2,000 square metres.

KLB (floor area ratio): typically 0.6 to 1.2 for tourism zone parcels, reflecting the height and coverage constraints combined . The KLB cap limits total built floor area across all levels.

RTH (green open space, ruang terbuka hijau): a minimum of 40 percent of the site area must be maintained as permeable, vegetated open space . This requirement is separate from the KDB: it establishes an active minimum for green space rather than simply a maximum for coverage, and it is assessed as part of the environmental quality review in the permit process.

Setback Requirements

Setbacks in the Karangasem regulatory framework operate at multiple scales:

Road Setbacks (Garis Sempadan Bangunan, or GSB). The minimum distance from the road reserve boundary to the nearest building face is determined by road classification. For provincial roads (such as the approach roads into Sidemen from the Klungkung junction), the GSB minimum is typically 10 metres . For village roads (jalan desa), the minimum is 3 to 5 metres. For national highway frontages, the setback extends to 15 metres.

Waterway Setbacks (Sempadan Sungai). Indonesian water resource law establishes minimum setbacks from river and stream banks based on waterway classification. For the rivers and streams in the Sidemen valley — primarily the Unda River and its tributaries — the applicable setbacks range from 10 metres for minor streams to 50 metres for the principal river channel . Structures cannot be built within the sempadan sungai zone; site planning must account for these no-build corridors in calculating effective developable area.

Irrigation Channel Setbacks. The Subak tembuku (primary irrigation channels) carry a minimum 3-metre no-build setback on each bank under the Karangasem local regulation implementing the subak protection policy. This setback must be factored into site plans where the parcel includes or is adjacent to active irrigation infrastructure.

Cliff and Slope Setbacks. For parcels on the valley ridgeline — the primary development zone for panoramic-view resort product — the RDTR provisions and the national building code establish minimum setbacks from the cliff or slope edge based on slope angle and the risk classification of the terrain. For slopes above 40 degrees, the setback from the stable crest of the slope is typically not less than 5 metres, with the specific distance determined by a geotechnical assessment submitted with the permit application.

Sacred Site Buffer Zones

The Kawasan Suci (Sacred Zone) provisions of the Bali spatial planning framework impose a structured buffer around the principal temples of the island. For the Sidemen corridor, the most significant of these buffers is the one associated with Pura Besakih — the principal state temple of Bali, located on the southern flank of Mount Agung at approximately 950 metres elevation .

The 2-kilometre radius protection zone around Pura Besakih extends down the Agung southern flank and into the upper reaches of some Sidemen valley sites. Within this 2-kilometre zone, the construction of principal resort structures (bangunan utama) is prohibited; the specific prohibitions and any modified standards for support structures are set out in the relevant RDTR provisions and in the Bali Provincial implementation guidance for the Kawasan Suci .

Beyond the 2-kilometre core buffer, the Karangasem RDTR provisions define an extended sensitivity zone extending to 5 kilometres from the major temples, within which design orientation, building materials, and landscape character are subject to guidance that, while not always expressed as hard prohibition, is assessed in the permit review process. Sites in this zone should incorporate Balinese spatial design principles — compound orientation, canang integration, traditional motif elements — as a matter of both regulatory prudence and authentic local design character.

Site Assessment Protocol

The combination of these regulatory layers — zone classification, height limits, density caps, setbacks, and sacred site buffers — makes systematic site assessment an analytical exercise that is best conducted before land acquisition rather than after. The effective developable area on a given parcel can be substantially smaller than the gross parcel area once setbacks, waterway exclusions, slope exclusions, and coverage caps are applied. A parcel of 2 hectares may yield a net developable area of 6,000 to 8,000 square metres — approximately 30 to 40 percent of the gross area — once all constraints are mapped. The resort programme must pencil on the net developable area, not the gross parcel.