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Design & Build

For those who already own land: we design, cost, and build with a transparent price per square metre from the very first drawing.

Design + construction 8–14 months 10-year structural warranty

Our Approach

A clear budget from the first drawing.

Many build projects go over budget because costs are only calculated after the design is finished. We reverse the order: budget and specification are agreed first, then the design responds to them. You know the total before a single brick is laid.

Open bill of quantitiesVolumes, unit rates, and material brands disclosed.
Lump-sum contractThe price is fixed while the scope is unchanged.
Weekly reportingProgress photos and an S-curve every Friday.
Interior work by Nawasena Renovation project · Probolinggo

Work Packages

Three levels of specification

Prices below are estimates for buildings in Probolinggo and surrounding areas, excluding permits and furniture.

Standard

IDR 4.2 m / m²

Single-storey home with tidy, durable finishes.

  • Stone footing & concrete sloof
  • Red brick walls, interior & exterior paint
  • 60×60 granite tile
  • Light steel roof frame, concrete tile
  • Aluminium frames, standard sanitary
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Signature

IDR 9.8 m / m²

Dedicated architect, custom materials, and full supervision.

  • Design by an IAI-certified architect
  • Imported marble / natural stone
  • Swimming pool & landscaping
  • Integrated smart home system
  • Dedicated site manager
Request a Quote

Prices are estimates and vary with plot shape, access, and soil conditions. A quote becomes binding only after a site survey and approved bill of quantities.

How We Work

Six stages, no surprises

Each stage has a clear deliverable and your approval before the next begins.

Consultation & site survey

Measurement, contour, access, and soil bearing checks. Free within Probolinggo.

Concept & budget

Initial sketches, room programme, and a cost estimate per square metre within 7 working days.

Detail design & BoQ

Construction drawings, 3D visuals, and an itemised budget agreed together.

Permits

Building approval and supporting documents handled by our team; 4–8 weeks depending on the area.

Construction

Staged payments tied to progress, weekly reports, and quality inspections.

Handover & warranty

Joint inspection, snag list, and a 10-year structural warranty.

Architecture Portfolio

A selection of what we have built

Two-storey tropical house
210 m² residence · Probolinggo · 2025
Minimalist cluster
Six-unit cluster · Lumajang · 2024
Living room interior
86 m² interior renovation · Probolinggo · 2025

FAQ

Before you start

Can I hire you for design only?

Yes. A design-only package covers architectural, structural, and 3D drawings at 3–5 percent of the estimated construction cost. We still provide a bill of quantities so you can compare contractors.

How do construction payments work?

Payments follow progress: 20% at contract, then staged by milestone (foundation, structure, walls, roof, finishes), with 5% retention released after a three-month maintenance period.

How long does construction take?

A single-storey home of 100–150 m² typically takes 6–8 months; a two-storey 150–250 m² home takes 10–14 months, depending on weather and material availability.

Can the price change midway?

The contract is lump-sum. Changes only occur if you request a scope change (written addendum) or site conditions were not detected during the survey, such as soft soil or rock.

Start With Your Land

Already own a plot? Let's do the numbers.

Send us the location and land area, and we will prepare an initial cost estimate within three working days.

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