Building & Development in Sumba

The realities that shape every project we advise on:

• •Construction cost per m² is typically 20–40% higher than mainstream Bali for equivalent quality
• •Timelines are longer: 14–22 months for a well-built villa, not 8–12
• •Materials must be planned in shipments — no next-day runs to a warehouse
• •Skilled tradespeople exist but are limited; the good crews are booked out
• •Design decisions (roof, orientation, materials) matter more because maintenance is harder
• •Permits (PBG, SLF) are non-negotiable and take time — start them at design stage

Before architecture, we run a feasibility pass: zoning (RTRW/RDTR) confirms allowable use and coverage, topography and soil determine foundation strategy, water and power availability define what infrastructure the plot needs, and setbacks (beach, road, river) define the buildable envelope. On many Sumba plots the marketed buildable area shrinks by 20–40% once these are honestly applied.

What separates a good Sumba build from a difficult one is almost always the builder. What we look for:

• •Verified track record of completed projects in Sumba (not just Bali) that we can visit
• •Direct employment of core trades — not a broker sub-contracting the entire job
• •Transparent BOQ (bill of quantities) with unit prices we can benchmark
• •Written schedule with realistic milestones and clear liability for delays
• •Financial capacity to carry material shipments without draw-down pressure
• •A site foreman who is actually present on site, not managing three jobs at once

PBG (Persetujuan Bangunan Gedung) is the current building approval, replacing the old IMB. It is issued before construction and must match the executed drawings. On completion, SLF (Sertifikat Laik Fungsi) certifies the building is fit for occupation. Skipping either creates real problems at resale, insurance and rental licensing stage — we always insist both are cleanly filed.

The recurring failures we help clients avoid or repair:

• •Signing a contractor without a written BOQ, then discovering "extras" every month
• •Designing in Bali without a site visit — proportions and orientation are almost always wrong
• •Under-specifying foundations on sandy or clay-rich plots
• •Cheap fixings and hardware that fail within two rainy seasons
• •No independent site inspection — client only sees photos the contractor chooses
• •Starting construction before PBG is issued, then negotiating with authorities from a weak position