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4 Beds
5 Baths
5,023 sqft

$3,750,000

12639 Promontory Rd, Los Angeles CA, 90049

Price per sqft$746.57
Built in1989
Property size5,023 sqft
Property typeResidential

Overview

Active

Listed Sep 8, 2026

Updated 20h ago

Over 5,000 square feet of grand-scale living with 24-hour guard gated security in the picturesque Mountaingate community of Brentwood. An extraordinary combination of space, security, privacy and resort-style living, this 4BR, 4.50BA home is one of the most ideal retreats in LA! Soaring ceilings, dramatic architectural volume, tall doors, oversized windows and sweeping open views create light-filled interiors with an impressive sense of scale from the moment you enter. The main level features expansive living and dining rooms, a comfortable family room, and spacious kitchen with breakfast area. Upstairs, a library provides an ideal setting for a home office, study or relaxed den for family members to enjoy. The generous primary suite features a veranda, fireplace, high ceilings and large bath with dual amenities and two walk-in closets. BR's 2,3 and 4 are all ensuite and offer full privacy on their own wings. Hardwood floors throughout much of the residence, three fireplaces and a three-car garage complete the interior. Outside, a low-maintenance backyard creates its own resort-like setting with BBQ, entertainers patios, a refreshing pool and an exceptionally large spa with ample room for exercise or simply relaxing outdoors. Ready to enjoy today with minor remodeling while offering an exceptional opportunity to personalize over time. For more than two decades, this was the longtime home of NBA veteran and trailblazer Jason Collins, a groundbreaking figure whose influence and legacy extended far beyond the basketball court. Mountaingate offers a unique park-like environment with 24-hour guard-gated security and hourly manned patrols, beautifully maintained common-area landscaping, trash-can services, community pool and spa, alarm monitoring and other community services. Enjoy the breathtaking Santa Monica conservatory mountains with its glorious hiking trails and stunning natural terrain. Plus, great schools - Roscomare, Paul Revere and Palisades High. Optional membership at Mountaingate Country Club offers golf, tennis and social memberships with restaurant and gym/fitness facilities. Conveniently located near the Getty, UCLA , USC and the best dining and shopping of Brentwood and the Westside. Offered at approximately $747 per square foot, this is an exceptional opportunity to own more than 5,000 square feet in Brentwood and a remarkable combination of scale, security, privacy and value. TRUST SALE, As Is condition, no court confirmation needed. Please use Trust Advisory with offer.

$24,949/mo

Est. mortgage payment based on a $3,750,000 home price.

All estimates are provided by Luxury Presence for informational purposes only. Actual amounts may vary.

Additional information

MLS® ID
26985579

Interior Features

Bedrooms
4
Bathrooms
5
Fireplace
Yes
Cooling
Yes
Heating
Yes
Basement
No

Exterior Features

Lot Size
6.17 Acres

Other Property Details

Association Fee Frequency
Monthly
Garage
Yes
View
Yes
Pool
Yes

Listed by Tania Ferris with Coldwell Banker Realty
Listing Contact: 310-713-8234 

Based on information from The MLSTM / Combined LA/Westside Multiple Listing Service, Inc. IDX information is provided exclusively for consumers' personal, non-commercial use, it may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. All information is deemed reliable but not guaranteed and should be independently reviewed and verified. Property locations as displayed on any map are best approximations only and exact locations should be independently verified. All properties are subject to prior sale, change or withdrawal, and may or may not be listed by the office/agent presenting the information. Neither listing broker(s) nor Desirée Lapin shall be responsible for any typographical errors, misinformation, misprints and shall be held totally harmless. 

©2026 Combined L.A./Westside MLS. All rights reserved.

Data last updated 9/25/2026

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