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.
For sale
$3,750,000
12639 Promontory Rd, Los Angeles, CA 90049
4beds
5,023sqft
Residential, Single Family Residence
Built in 1989
6.17 Acres Lot
$3,602,400 Zestimate®
$747/sqft
$1,421/mo HOA
What's special
- 8 days
- 607
- 31
Zillow last checked:
Listing updated:
Listed by:
Tania Ferris DRE # 00664167 310-713-8234,
Coldwell Banker Realty 310-777-6200
Source: CLAW,MLS#: 26985579
Facts & features
Interior
Bedrooms & bathrooms
- Bedrooms: 4
- Bathrooms: 5
- Full bathrooms: 4
- 1/2 bathrooms: 1
Rooms
- Room types: Family Room, Walk-In Closet, Utility Room, Powder, Living Room, Loft, Breakfast Area, Bar
Heating
- Central, Forced Air
Cooling
- Central Air, Air Conditioning
Appliances
- Included: Washer, Refrigerator, Range/Oven, Freezer, Dishwasher, Dryer, Disposal
- Laundry: Laundry Room, Inside
Features
- Built-Ins
- Flooring: Wood, Carpet
- Number of fireplaces: 3
- Fireplace features: Living Room, Family Room, Gas
Interior area
- Total structure area: 5,023
- Total interior livable area: 5,023 sqft
Property
Parking
- Total spaces: 6
- Parking features: Garage - 3 Car
- Garage spaces: 3
- Uncovered spaces: 3
Features
- Levels: Two
- Stories: 2
- Has private pool: Yes
- Pool features: Private
- Has spa: Yes
- Spa features: Private
- Has view: Yes
- View description: Tree Top, Mountain(s), Valley
Lot
- Size: 6.17 Acres
Details
- Additional structures: None
- Parcel number: 4493030028
- Zoning: LARD2
- Special conditions: Standard
- Other equipment: Cable
Construction
Type & style
- Home type: SingleFamily
- Property subtype: Residential, Single Family Residence
Condition
- Year built: 1989
Community & HOA
Community
- Security: 24 Hour Security, Gated Community with Guard, Alarm System
HOA
- Has HOA: Yes
- HOA fee: $1,421 monthly
Location
- Region: Los Angeles
Financial & listing details
- Price per square foot: $747/sqft
- Tax assessed value: $3,398,075
- Date on market: 9/9/2026
Estimated market value
$3,602,400
$3.42M - $3.78M
Not available
Price history
| Date | Event | Price |
|---|---|---|
| 9/9/2026 | Listed for sale | $3,750,000+56.9%$747/sqft |
Source: | ||
| 10/13/2004 | Sold | $2,390,000+93.4%$476/sqft |
Source: Public Record Report a problem | ||
| 8/12/1997 | Sold | $1,236,000$246/sqft |
Source: Public Record Report a problem | ||
Public tax history
| Year | Property taxes | Tax assessment |
|---|---|---|
| 2026 | -- | $3,398,075 +2% |
| 2025 | $40,349 +1.2% | $3,331,447 +2% |
| 2024 | $39,889 +2% | $3,266,126 +2% |
| 2023 | $39,115 +4.9% | $3,202,085 +2% |
| 2022 | $37,296 +1.3% | $3,139,300 +2% |
| 2021 | $36,835 -1% | $3,077,746 +1% |
| 2020 | $37,216 | $3,046,189 +2% |
| 2019 | $37,216 +12.7% | $2,986,460 +10% |
| 2018 | $33,015 | $2,715,000 |
| 2017 | $33,015 +0.6% | $2,715,000 |
| 2016 | $32,828 +0.3% | $2,715,000 +14.8% |
| 2015 | $32,721 +12% | $2,366,000 |
| 2014 | $29,211 | $2,366,000 +18.3% |
| 2012 | -- | $2,000,000 |
| 2011 | -- | $2,000,000 |
| 2010 | -- | $2,000,000 -22.7% |
| 2009 | -- | $2,587,010 +2% |
| 2008 | -- | $2,536,285 +2% |
| 2007 | -- | $2,486,555 +2% |
| 2006 | -- | $2,437,800 |
| 2005 | -- | $2,437,800 +147.1% |
| 2004 | -- | $986,372 +1.9% |
| 2003 | -- | $968,295 +2% |
| 2002 | -- | $949,310 +4% |
| 2000 | -- | $912,449 |
Find assessor info on the county website
Monthly payment
Est. payment
Payment breakdown
Explore the cost of this home by adjusting the details. Changes won't be saved.Climate risks
Neighborhood: Brentwood
Nearby schools
Schools provided by the listing agent
- District: Los Angeles Unified
Source: CLAW. This data may not be complete. We recommend contacting the local school district to confirm school assignments for this home.
Local buyer's agents are ready to help






