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Our Story

Our company's history can be traced back to 1975 when Pat Phelan, a fifth-generation resident of the Central Coast, laid the foundation for Pat Phelan Construction in Arroyo Grande, California. After Pat's retirement, his son Greg Phelan took the reins and, in 2016, founded Seamair Construction, Inc. He brought with him his father's experienced construction team, nurtured the loyalty of existing customers and forged new connections within the community of general building contractors, developers and government agencies.

Seamair (pronounced 'see mar') has rapidly evolved into a preferred provider of construction services not only on the Central Coast of California but also in neighboring regions. We are committed to expanding our company and service offerings while preserving the enduring ethos of our family business culture.

Our Values


We believe in doing things right the first time. By ensuring quality and precision at every phase of every project, we not only save time and resources but also foster a culture of trust and satisfaction among our clients and partners, delivering the best possible results for everyone involved.


At Seamair, integrity is the cornerstone of our operations. We believe that building with unwavering honesty, ethics and transparency not only leads to superior results but also cultivates trust and respect within the industry. Our commitment to upholding these core values has earned us a strong and enduring reputation for excellence, setting us apart as a trusted partner in every project we undertake.


We uphold stringent safety measures in all situations, including hazardous environments, severe weather and remote sites. Our safety record is a testament to our unwavering commitment. Rigorous safety protocols are embedded into every project, with all partners and subcontractors empowered to halt work if safety is compromised. Our continuous safety training ensures exceptional performance.

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