Why this estimate is different
01

Real project data

Based on construction data from KAMP's completed projects.

02

More than floor area

Different parts of the project are considered separately, including areas, specifications, glazing and equipment.

03

A planning tool

An early budget indication designed to help clients make better decisions before the project is fully defined.

No generic cost-per-square-metre formula.
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01 / Your project

Your home

Different parts of a project have different construction requirements and should not simply be treated as one surface.
What does this include?

Total enclosed area — bedrooms, living spaces, kitchen, everything under roof.

What does this include?

Slab + roof — often as large as the house itself in Cambodia.

What does this include?

Standalone structure — NOT open carports under the main roof, which are already free. Leave at 0 if you only need parking space.

02 / Project specification

Annex rooms & air conditioning

Home office
Storage room
Laundry room
Detached garage is costed separately above, under "Your home" — no need to add it here.
03 / Specification

Finish level

A professional specification choice — not a pricing tier.
Essential
Practical specification, standard tiles and fittings
Balanced
Comfortable specification, a broader range of finishes
Premium
Higher-grade finishes, fittings and detailing
04 / Architectural character

Openings & glazing

The amount and type of glazing can have a significant impact on construction cost — independent of finish level.
Why does this matter?

Check the elevations/facades if unsure; this is the single biggest lever we've seen underestimate real quotes. A "Standard" spec house can still have large architectural windows — glazing is a design choice, not a finish-level consequence.

Standard
Regular windows, ~20% of walls
Generous
Large openings, ~32% of walls
Full-height
Floor-to-ceiling sliding, ~45%+
05 / Additional features

Pool & extras

None
Small
Medium
Large
Your project
Estimated range
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Important

Foundations are not included in this estimate. Ground conditions can significantly affect construction cost.

Why are foundations excluded?

Depending on soil conditions and building type, ground adaptation works typically add 10% to 30% on top of the estimated range — the low end for shallow foundations on standard soil, the high end when pile foundations are required (common on soft or uncertain soil, and systematic for multi-level builds). As a reference, foundation costs alone typically range $65–140/m² of covered slab depending on soil conditions and whether piles are required. A geotechnical study is required before establishing a final construction budget — never commit a final budget before one is done.

Also excluded: land cost, OPM fees, and VAT. Detached garages/workshops are costed separately in "Your home" above if you entered a size; open carports under the main roof are already free. A firm price only comes from a tendered contract against final drawings and confirmed contractor quotations.

Preliminary construction budget
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Balanced specificationIncludes a provision for typical contract variations on site
Essential
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Balanced
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Premium
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Excludes foundations, land, OPM fees & VAT — typically +10–30% for ground works. Why? ↑
What generated this estimate
Why a range?

Construction costs vary according to design development, specifications, site conditions and contractor pricing. The range reflects the preliminary nature of the estimate.

See how this estimate is built ↓
This estimate is a planning tool, not a quotation.

A final construction budget requires sufficiently developed drawings, specifications, and an appropriate assessment of site conditions.

Planning a real project?

Your estimate is a starting point.

KAMP can help you review the assumptions, refine the budget and define the next step for your project.

Discuss my project → Modify my estimate
Two quick questions
Where are you with your project?
Just exploring
Planning / designing
Ready to build
Methodology How this estimate is built ↓
Budget & Cost Planning

How this estimate fits into your actual budget.

This estimator is built from KAMP's five most recent projects over roughly the last three years, checked against each new project as it goes to quotation. The base is updated progressively as new data comes in — it's a living estimation tool, not a fixed price list. It gives you a first sense of scale, and gives us a starting point for assessing your project.

The range above is a planning figure, not a quote. As your project moves from an idea toward a buildable design, the budget gets re-checked at each real milestone:

Programme→ Estimate→ Design→ Adjust→ Re-estimate→ Final Plans→ Contractor Quotes→ Final Budget

Contractor quotations only come in once the plans are defined enough to price properly. When they do, we review the amounts, quantities, and specifications against the brief — checking for omissions or figures that don't add up — before you commit.

If a project doesn't fit the budget: the answer is to reduce the programme or increase the budget. There is no third option that quietly lowers quality without you knowing about it.