အထွေထွေအတွင်းရေးမှူးချုပ်အဖြစ် တာဝန်ထမ်းဆောင်စဉ်ကာလအတွင်း ဦးသန့်သည် Palisade နှင့် Douglas Avenues လမ်းကြား၊ ၂၃၂လမ်းအနီးရှိ ၄.၇၅ ဧကမျှကျယ်သော Riverdale, Bronx ခြံတွင် နေထိုင်ခဲ့သည်။<ref>Dunlap, David W. [http://query.nytimes.com/gst/fullpage.html?res=9B0DE5D81731F935A25752C1A961948260 "Bronx Residents Fighting Plans Of a Developer"], ''The New York Times'', November 16, 1987. Accessed May 4, 2008. "A battle has broken out in the Bronx over the future of the peaceful acreage where U Thant lived when he headed the United Nations. A group of neighbors from Riverdale and Spuyten Duyvil has demanded that the city acquire as a public park the 4.75-acre parcel known as the Douglas-U Thant estate, north of 232d Street, between Palisade and Douglas Avenues. "</ref>