Behind the historic gates of Llewellyn Park, America’s first planned gated community, this four-acre estate originally known as The Oakbrook Estate and built for the Colgate Family offers architectural legacy, privacy, and thoughtful modernization at a compelling new price. The main residence has been carefully renovated to honor early-20th-century craftsmanship while select bedroom and bath spaces remain opportunities for a purchaser’s design vision. An attached private apartment with its own entrance offers flexibility for extended stay guests or live-in staff. A separate income-producing carriage house generates approximately $43,000 annually, with lease in place through 10/31/27. The grounds create a true resort setting, anchored by a heated in-ground pool and an extraordinary 3,000 sq ft pool house ready to be completed as a cabana, event space, additional living quarters, golf simulator retreat, or wellness pavilion. Spanning three parcels across four acres and minutes from Montclair’s dining, culture, and direct NYC access, this is a rare opportunity to own scale, history, and future upside within one of the region’s most storied enclaves. Annual property taxes approx. $61,717.
Single Family Home
$61,717 Annual Tax
MLS/Listing ID 26003901
Heating - Gas
Cooling - Central Air
Lot - Regular Lot
The data relating to the real estate for sale on this web site comes in part from the Internet Data Exchange Program of the NJMLS. Real estate listings held by brokerage firms other than Douglas Elliman of NJ are marked with the Internet Data Exchange logo and information about them includes the name of the listing brokers. Some properties listed with the participating brokers do not appear on this website at the request of the seller. Listings of brokers that do not participate in Internet Data Exchange do not appear on this website.
All information deemed reliable but not guaranteed. Last date updated: 03/02/2026.
Source: New Jersey Multiple Listing Service, Inc.
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