Advisory Services
Gresham Art Advisory provides independent, research-driven guidance for collectors, designers, and estates seeking to build, refine, or steward meaningful collections. With a discreet approach and over two decades of global market experience, Casey offers tailored support across the full lifecycle of collecting.
Clayton Colvin, Weighted Blanket, 2025Acquisitions &
Collection Building
Comprehensive guidance for developing new collections and expanding existing ones. Services include refining collecting goals, conducting market and provenance research, evaluating authenticity and condition, introducing clients to emerging and established artists, and advising on negotiation, purchase decisions, framing, shipping, and installation. Clients at all budget levels receive personalized support designed to foster confidence and deepen their connection to collecting.
Deaccession &
Resale Strategy
Objective guidance throughout the sales process. This includes evaluating the market, determining the most advantageous venues, assessing private sale versus auction, reviewing proposed terms and estimates, and negotiating competitive arrangements on the client’s behalf. Strategies are designed to maximize value while maintaining discretion and protecting client interests.
Collection
Management
Ongoing stewardship for new and established collections, including cataloging, provenance research, archival documentation, insurance coordination, conservation oversight, imaging, storage consultation, and logistics. Clients receive tailored strategies informed by continuous market monitoring to support long-term planning, acquisition decisions, and responsible care.
Art Travel, Art Fair
& Auction Representation
Strategic, discreet representation at global art fairs and auctions, acting solely in the client’s interest. Services include bidding strategies, preview planning, condition review, and confidential market insight. Casey also designs curated art travel experiences, including artist studio visits, gallery and museum tours, and VIP fair access, to help clients engage with the art world in meaningful, memorable ways.
