ABOUT

D3 Damon Design & Development is a real estate development and design platform led by Delphine Sloan Damon. The firm specializes in the acquisition, repositioning, design, development, and stewardship of select residential and mixed-use properties, with a particular focus on projects requiring discretion, judgment, and a high level of coordination across disciplines.

D3 operates at the intersection of real estate, design, construction, land use, and long-term asset value. The firm’s work extends from off-market acquisition and entitlement strategy to architectural direction, interior design, landscape development, construction oversight, procurement, and final installation. Each project is approached with a disciplined understanding of both the financial and physical realities of real estate, as well as a deep commitment to beauty, quality, and lasting livability.

Under Delphine Damon’s leadership, D3 assembles and directs highly specialized teams of architects, interior designers, landscape architects, engineers, builders, artisans, craftspeople, consultants, and legal advisors. The firm is especially experienced in complex, highly regulated environments where successful outcomes depend on strategic planning, strong relationships, rigorous execution, and the ability to integrate many moving parts into one coherent vision.

A defining part of D3’s work is its full-service design capability. The firm is involved not only in broad architectural and development decisions, but also in the details that make a home feel complete — materials, finishes, millwork, lighting, furnishings, textiles, art, antiques, landscape, exterior living spaces, and the practical systems that support daily life. Through long-standing relationships with artisans and specialized trades, D3 is able to execute work at a level of refinement that is both highly personal and enduring.

The firm’s approach is thoughtful, exacting, and deeply client specific. Rather than imposing a signature look, D3 develops properties and living environments that are grounded in architecture, place, and purpose. The result is work that feels refined but not overdesigned, elegant but livable, and built to hold its value over time.