Our reputation is as solid as concrete

Welcome to CJ Samui Builders

Where We Build Your Visions

CJ Samui Builders is a western owned and managed Koh Samui construction & building company with a highly motivated workforce. We are locally renowned as a reliable and honest contractor producing high-end quality finishes using modern materials and methods.

+66 892 886 651

+66 941 479 240

CJ Samui Builders Work Sample

Get Your Free Consultation

We are ready to discuss your Koh Samui construction project. No matter how big or small, let’s discuss your idea in detail.


Koh Samui Construction Services

Competitively priced quality building with an emphasis on timeframes and customer satisfaction.

Concept Design

We'll get your idea moving forward and form that backbone of your project.

Architectural Design

Get Your Project Off The Ground With Detailed Architecture Design

New Builds

Complete construction services taking projects from design concepts to a finished build.


Bring your property up to standards & make it like new with our renovations.

Structural Design​

Designing rigid and load-bearing structures to last their lifetime.

Planning Approval

Assistance with planning approval, We help you attain and submit the necessary documents to get your project approved as quickly as possible.

Solar Panels

Installing Solar On-Grid, Off-Grid, Hybrid. Heat Pumps & Heat Recovery.

Domestic & Commercial

Professionalism through and through regardless of the size of your project.

What Our Clients Say

CJ Samui Builders’ clients consistently praise the quality of our services and the professionalism of our team. They appreciate our attention to detail, our commitment to meeting their needs, and our ability to complete projects on time and within budget. Our clients appreciate the open lines of communication we maintain throughout the construction process, and the reassurance that comes with working with a team that truly cares about their satisfaction. From start to finish, our clients can trust us to deliver exceptional results and a stress-free building experience.

Mantra Samui, Koh Samui
Sebastian & Jason worked closely with LTC playing a vital role in achieving the high-quality finishes we and the appointed design team set out to achieve. Sebastian & Jason are highly experienced professionals who were a pleasure to work with.
Scott Reid
Project Manager, Mantra Koh Samui
CJ Samui Builders have been superb, I only wish I’d have known about them before giving the job to the last lot.

I’ve seen some of their other building projects and they are doing 50m contracts and large hotels so completing villas on our development is a walk in the park for them.

We have been dealing with AJ, he is very easy to work with, always keeps to timeframes and I think the quality of his work is excellent. Obviously when you work with someone new you never know how things are going to work out but having known them now for 3 or so months I couldn’t be happier.

I know they are having to hire extra staff to keep up with demand as they are so busy which is always a good sign. I’ve heard from several people since that they are probably the best builder on the Island currently in terms of the quality of work and being in demand etc.
Five Islands Estates Testimonial 300x450 1
Sebastian (Bas) oversaw the complete building of our first villa (villa 8) from start to finish. He is really a great guy with significant experience. He also speaks fluent Thai. Bas has worked closely with myself and my partners (the designers) and was extremely valuable when it came to value engineering, design and dealing with vendors and subcontractors. He always has a good attitude and is very easy to work with.
Koh Samui Villa
We knew we had chosen a very professional service. The project was organized perfectly and they answered all questions we had, The whole team are all trained to high standards by Sebastian and Jason, it shines through, Many company owners are never to be seen on a project where C J Samui Builders set up an office on the job, They are there first hand and a pleasure to have around
Koh Samui Property Owner

Our Expert Team

CJ Samui Builders is a team of experienced professionals passionate about delivering exceptional results. Our expert team members have over 30 years of combined experience in the construction industry and bring a wealth of knowledge and expertise to every project. We are dedicated to providing our clients with high-quality construction services and are committed to ensuring that every project is completed on time and within budget. Whether you’re building a new home or renovating an existing one, Koh Samui Construction is your go-to team for top-notch results.

Sebastian Greenslade

Sebastian Greenslade

Managing Partner

Jason Read

Jason Read

Managing Partner

Samui Construction Blog