Harmonic Sequence Construction (HSC) specialises in high-end construction project management. We are renowned for our exceptional level of service and professionalism, advanced techniques and attention to detail. Our founder Andreas Bartels has been independently managing construction projects in Corfu since 2009, before establishing HSC in 2016. 

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Strong Client Relationships | Longstanding relationships with our clients have played a significant role in providing a wide variety of construction services with reliability, diligence and integrity. Anchored by committed employees who strive for excellence, we offer solutions informed by a thorough understanding of our client’s needs.

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Cutting-edge Methods | We employ cutting-edge construction methods, high quality materials, and techniques which are independently certified. Our experienced and dedicated workforce deliver excellent quality down to the finest detail.

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Assured High-Quality Suppliers | We understand the importance of using quality craftsmanship and suppliers. Therefore, we only use state-licensed and insured sub-contractors and maintain a broad network of specialised tradesmen.

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Breadth of Experience | HSC is committed to provide superior project execution and delivery, regardless of the size or complexity of the project. Years of experience and a common-sense approach to construction allow us to undertake variety of building projects and overcome the challenges of locations with difficult access or logistical complexities.

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Absolute Transparency | Clients can have the peace of mind of absolute transparency on cost breakdown for each construction project with an item-by-item cost analysis. Furthermore, our clients can be assured of compliance with all current city codes and ordinances. All of our projects are personally supervised to ensure the highest level of quality and craftsmanship from the start to finish.

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Full Project Supervision | All of our projects are personally supervised to ensure the highest level of quality and craftsmanship from start to finish.