How Design Pros Brought Order to a Home Filled With 60 Years of Stuff

This design team helped a man with a lifetime of accumulated possessions turn his Guernsey Island home into a coherent retreat

Catherine Romano

Feb. 22, 2018 10:07 a.m. ET

WHEN designers Catherine Casteel Olasky and Maximilian P. Sinsteden first saw this home on the Channel Island of Guernsey, it was filled with 60 years of eclectic, albeit fine, possessions. The client, an older gentleman, had spent most of his time between the U.K., Ireland and America, among other locales, picking up disparate furnishings and art along the way. The house itself, a crazy-quilt accretion of 16th- through 20th-century construction, was another challenging factor.

The New York design team, then based in London,...