Koh Samui Construction Company

Premium Building Contractor for Luxury Villas & Resorts

Looking for a reliable Koh Samui construction company? We are the bridge between international engineering standards and local execution.

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Building in Samui: Why “Standard” Isn’t Enough

Koh Samui’s unique environment demands more than just a standard builder. High humidity, salt-laden air, and monsoon rains can degrade standard concrete and steel within years.

Ancra builds for longevity. We use:

  • Marine-Grade Concrete Mixes: To resist chloride penetration and spalling.
  • Galvanized & Epoxy-Coated Steel: Essential for structural integrity near the coast.
  • Advanced Piling Solutions: Micro-piling and bore-piling for stability on Chaweng Noi and Lamai slopes.

We don’t just build to pass inspection today; we build villas that hold their value for decades.

Koh Samui Construction Company
Our specialization

We build structures that withstand the elements and define luxury.

Building on Koh Samui demands more than just aesthetic vision; it requires engineering rigour. We specialise in navigating the island’s unique topographic challenges—from stabilising steep hillside foundations to selecting marine-grade materials that resist salt corrosion.

While others focus solely on the finish, we focus on the physics. Our team combines international construction standards from our KL Headquarters with deep local knowledge, ensuring your villa is not just beautiful on opening day, but structurally sound for generations.

Featured Project

Luxury Villa Construction

From modern tropical pool villas to expansive hillside estates. We handle structural works, MEP (Mechanical, Electrical, Plumbing), and high-end architectural finishes.

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Architect in Koh Samui
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Featured Project

Swimming Pool & Hardscaping

We design and build infinity pools, saltwater systems, and extensive retaining walls. Our teams ensure proper waterproofing and filtration systems suited for the tropics.

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Featured Project

Resort & Commercial Builds

Scalable workforce for boutique resorts, hotels, and commercial spaces. We manage concurrent timelines to deliver clubhouses, guest keys, and infrastructure simultaneously

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How we work

Proven Process that we execute to ensure top industry standards.

01

Site & Soil Analysis

We start with the dirt. We conduct topographic surveys and soil load-bearing tests to determine the exact piling depth required for your hillside or beachfront plot.

02

Permitting & BOQ

We handle the ``Yellow Book`` paperwork. We submit compliant architectural drawings to the Koh Samui Municipality and provide you with a transparent, line-item Bill of Quantities (BOQ).

03

Earthworks & Foundation

The heavy lifting begins. We execute cut-and-fill operations, build retaining walls for erosion control, and drive structural piles to secure the foundation against monsoon shifts.

04

Structural Shell

We pour reinforced concrete and erect steel frameworks using laser-leveled precision. This is the skeleton of your villa, built to marine-grade specifications.

05

MEP & Systems

The veins of the house. We install electrical wiring, plumbing, pool filtration, and air-conditioning systems, ensuring all lines are pressure-tested before concealing.

06

Finishing & Handover

Installation of flooring, windows, and joinery. We conduct a rigorous QC defect check (snagging list) to ensure perfection before handing over the keys.

Where We Build

Our construction teams are active across the entire island, with specific expertise in high-value zones:

Chaweng Noi • Bophut • Maenam • Lamai • Plai Laem • Choeng Mon • Taling Ngam
  • Koh Samui Construction Company
  • Interior Design in Koh Samui
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Koh Samui Construction FAQ

Q: How much does it cost to build a villa in Koh Samui?

Construction costs vary by finish quality and site difficulty. Generally, standard luxury builds range from 30,000 to 45,000 THB per sqm. High-end builds with imported materials or difficult steep-slope engineering can range from 50,000 THB per sqm and up. Contact us for a precise BOQ (Bill of Quantities) estimation.

Q: Can you build on steep slopes (over 35%)?

Yes. We specialize in hillside engineering. We use step-foundations and specialized soil retention systems to build safely on gradients while strictly adhering to Koh Samui’s 80m and 140m environmental zoning laws.

Q: Do you handle building permits?

Yes. We provide a full Design & Build service. We coordinate architectural drawings with the local OrBorTor and Koh Samui Municipality to secure your Yellow Book (Tabien Baan) and construction permits seamlessly.

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Ready to Break Ground? Get in touch.