Find the right address before the market catches up.
Keystone pairs neighborhood intelligence with a map-first buying process for Manhattan and Brooklyn homes between $800K and $2M.
Map-synced market view
Four curated homes are synced to a real neighborhood map so location, price, and buyer fit stay connected.

The Parkline Residence

Harbor House Loft

Rowan Garden Townhome

Hudson View Flat
Sarah Kim
Sarah leads Keystone's Manhattan and Brooklyn buyer desk, with a focus on quiet inventory, pricing leverage, and closing timelines for finance-driven purchases.
Mortgage calculator
Estimate monthly principal and interest before Sarah prepares a full lender scenario.
Clear guidance at every offer.
“Keystone showed us three comparable sales the listing agent had not priced in. We won below ask and still closed in 29 days.”
“Sarah filtered out the noise fast. Every tour had a financing angle, renovation estimate, and resale thesis attached.”