McMahon Group
Design & Construction


John McMahon is a general contractor with commercial and residential projects throughout Southern California.

Raised in Santa Barbara, John has a lifelong interest in design and construction. In his youth, he traveled to the southeastern US and apprenticed as a painter. There, the masterful technique and attention to detail he is known for were developed while painting the richly detailed antebellum residences of the region.

Returning to Southern California, John gained hands-on experience on hundreds of construction projects over 17 years. His broad-based knowledge and unique understanding of Southern California's wide array of design and architectural styles inspired hime to expand his license to accommodate his clients' requests for comoplete construction projects.

Working frequently with his brother, Thom McMahon, a renowned Santa Barbara architect, John has been responsible for diverse construction projects, large and small, from early planning through completion.

Recent projects have required his special expertise in:

  • Using environmentally friendly building products and finishes, including non-VOC paints
  • Working within the regulations for materials and construction practices in high-fire rated hillside areas
  • Developing finish schedules that preserve the historical integrity of architecturally significant homes
  • Applying specialty finishes such as Venetian plaster
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