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The Team

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Dune Development Group is a Miami-based residential development and design-build firm founded by Erin and Gus Eleftherio. We create one of one homes through a hands on approach that brings development, construction and interiors together under one vision.

Erin brings an engineer's precision and a designer's eye to the firm, overseeing much of Dune's design, interiors and project execution. Her technical background informs an approach where aesthetics and construction are considered together from the beginning, allowing architectural details, materials and custom elements to become an integral part of the home rather than an afterthought.

Gus leads Dune's development and construction operations and is a Florida-licensed Certified Building Contractor and real estate sales professional. His background spans residential development, construction and institutional real estate, giving Dune an owner-builder perspective on every project from acquisition and feasibility through permitting, construction and eventual sale.

Working together allows the firm to remain intentionally hands-on. Design decisions are made with construction in mind. Construction decisions are made with the finished home in mind. Every project is approached from the perspective of an owner.​

Track Record

$6.15M Record Non-Waterfront Sale in Morningside

$20M in transactions to date

$20M+ Projected 2027 Home Sales

Mansion Global Listing of the Day Editorial

Licensed Building Contractor + Sales Associate

Design and Build Philosphy

Dune Development Group is a Miami-based residential development and design-build firm founded by Erin and Gus Eleftherio. We create one-of-one homes through a hands-on approach that brings development, construction and interiors together under one vision.

Dune's work is rooted in the idea that a home should feel connected to its place. We aren't interested in creating interchangeable houses. Architecture, landscape, materials and interiors are developed together so that each home feels specific to its site and neighborhood. The result is a growing portfolio of residences that combine historic character, custom craftsmanship and modern execution.

© 2026 by Dune Development Group. All rights reserved.

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