A Team Committed to Excellence

CASTO Group and David Lehrman


Sunset Beach is being developed through a unique partnership between CASTO Development and local real estate developer David Lehrman. For nearly 100 years, CASTO has been successfully developing and managing commercial, mixed-use and residential real estate focused in Florida, the Carolinas and Ohio. David Lehrman, with over 25 years of experience in luxury real estate development, brings to the partnership his extensive knowledge of the local luxury real estate market and unparalleled experience developing and marketing elite condominium residences on Siesta Key’s stunning beachfront including Ten35 Seaside, Halcyon Siesta Key and the Hyatt Residences on Siesta Key Beach.

MHK Architecture


MHK ARCHITECTURE was founded in2009 in SWFL by Matthew Kragh. Starting with a simple vision of architectural excellence, the firm has grown into a collaborative of one hundred-plus design professionals, with offices nation-wide, creating some of the most desired architectural works throughout the US and Caribbean. Specializing in the design of single-family and multi-family residential, hospitality, commercial projects, mixed-use developments, and master planned communities, MHK has grown its reputation in the design and construction industry by our commitment to excellent work and desire to exceed clients’ expectations.

The Sarasota Real Estate Company

Marketing and Sales

The Sarasota Real Estate Company, a boutique real estate and development company serving Sarasota and its surrounding coastal communities, was founded by David Lehrman in 2013 to offer homebuyers and investors the qualities he most values in the real estate business – unrivaled client services, uncompromising integrity, and a deep knowledge of Sarasota’s dynamic real estate market. Through partnerships and collaborations with some of Sarasota’s top builders, architects, designers, engineers and landscape architects, David and The Sarasota Real Estate Company began creating, marketing, and selling luxury custom homes and condominiums. In recent years, they successfully marketed and sold out two of Siesta Key’s newest and most prestigious beachfront condominium projects – Halcyon Siesta Key, completed in 2018 and TEN35 Seaside, completed in 2023.

Inside-Eye Design

Interior Design

Inside-Eye Design is a full-service interior design firm assisting clients with a wide range of challenges including, selection of architectural details and finishes, collaborating with architects and builders, decorating a functional beautiful space with furniture, fabrics, accessories, and creating custom pieces tailor-made for your living space. We specialize in Luxury Vacation Rentals and Private Residential. Heavily influenced by the natural beauty of the Florida Suncoast, Inside-Eye Design was built on the emphasis of quality over quantity and creating spaces that are both innovative and timeless while remaining whole-heartedly home. The brand was founded in 2000 by Founder and Principal designer, Jenifer Dufresne.