3218 Upper Lock Ave, Belmont, CA 94002
OFF MARKET

$2,806,500

Trulia Estimate
  • 4 Beds
  • 3 Baths
  • 2,996 sqft

3218 Upper Lock Ave, Belmont, CA 94002

Plateau-Skymont
Est. Refi. Payment $17,048/mo*
Refinance Your Home
Currently Off Market - Sold Jun 30, 2023 for $2,425,000

Home Value

Trulia Estimate
$2.81M
Since last month
$600 (0%)
Since last year
Increased$134K (+5%)
Since last sale
Increased$382K (+15.8%)
Learn more about this home's value by checking out its Trulia Estimate, the value of nearby homes, and how much similar homes have sold for.

Trulia Estimate

The of this home's value increased by +72% in the last 10 years
MonthEstimated value
2026
August 2026$2.81M
August 2026$2.81M
July 2026$2.81M
June 2026$2.85M
May 2026$2.9M
April 2026$2.95M
March 2026$2.96M
February 2026$2.91M
January 2026$2.78M
2025
2024
2023
2022
2021
2020
2019
2018
2017
2016

Comparable sales

These are recently sold homes that have a similar location or other similar features to this home, like bedrooms, bathrooms, and square footage. Get a sense of the expected prices in the area by viewing these homes.
Address
Distance
Property Type
Sold Price
Sold Date
Bed
Bath
Sqft
2920 San Juan Blvd, Belmont, CA
0.21
Single-Family Home
$2,660,000
10/24/25
4
3
2,520
3208 Upper Lock Ave, Belmont, CA
0.05
Single-Family Home
$2,100,000
03/24/26
4
2
2,210
2618 Belmont Canyon Rd, Belmont, CA
0.19
Single-Family Home
$3,100,000
09/04/25
4
3
2,926
3225 Upper Lock Ave, Belmont, CA
0.06
Single-Family Home
$2,785,000
10/09/25
3
2.5
2,270
2608 Monte Cresta Dr, Belmont, CA
0.32
Single-Family Home
$2,720,000
02/17/26
4
2.5
2,660
2902 San Juan Blvd, Belmont, CA
0.29
Single-Family Home
$3,150,000
06/12/26
4
3
2,474
3412 Plateau Dr, Belmont, CA
0.26
Single-Family Home
$3,100,000
06/11/26
4
3
2,180
3612 Reposo Way, Belmont, CA
0.18
Single-Family Home
$2,710,000
02/06/26
4
2
2,193
2706 Belmont Canyon Rd, Belmont, CA
0.09
Single-Family Home
$3,300,000
08/21/26
5
3.5
3,270
3806 Naughton Ave, Belmont, CA
0.23
Single-Family Home
$3,800,000
12/12/25
5
4
2,806

Nearby home prices

Get a sense of expected prices in the area by checking the value of nearby homes.
Address
Distance
Price
Bed
Bath
Sqft
Status
3225 Upper Lock Ave, Belmont, CA 94002
0.06
$2,912,500
3
2.5
2,270
Off Market
3300 Plateau Dr, Belmont, CA 94002
0.04
$2,746,200
3
2
1,710
Off Market
3208 Upper Lock Ave, Belmont, CA 94002
0.05
$2,100,000
4
2
2,210
Recently Sold
3311 Plateau Dr, Belmont, CA 94002
0.08
$1,980,000
3
1
1,200
Recently Sold
Marburger Ave, Belmont, CA 94002
0.13
$225,000
-
-
-
For Sale
2706 Belmont Canyon Rd, Belmont, CA 94002
0.09
$3,300,000
5
3.5
3,270
Recently Sold
2663 Belmont Canyon Rd, Belmont, CA 94002
0.09
$2,498,000
4
2
2,140
Off Market
2937 San Juan Blvd, Belmont, CA 94002
0.16
$2,100,000
3
2
2,050
Recently Sold
3602 Reposo Way, Belmont, CA 94002
0.14
$3,563,000
4
3
2,663
Off Market
3200 Marburger Ave, Belmont, CA 94002
0.17
$700,000
-
-
-
For Sale
3106 Marburger Ave, Belmont, CA 94002
0.17
$2,199,000
3
2
1,340
For Sale
2945 San Juan Blvd, Belmont, CA 94002
0.18
$1,257,000
4
2
1,640
Recently Sold

Local Information

  • Map ViewExplore the area around 3218 Upper Lock Ave.
  • Schools1 Elementary School1 Middle School1 High School
  • Shop & Eat
-- mins to
Commute Destination

Home Highlights

Property Type
Single-Family Home
Year Built
1976
Living Area
2,996 sqft
Price/Sqft
$937
Parking
Garage

About this House

Glorious Valley views from every room of this beautiful 4 bedroom, 2 1/2 bath Belmont home. Open, Light and Bright with soaring ceilings, large rooms and view decks. Beautifully remodeled Kitchen with 13' walk-in pantry. Huge master suite with private balcony. Enclosed Level front Lawn with flowering landscape. Private walkable roads which lead to open space with trails for hiking and biking. Great Location with easy access to shops, blue ribbon schools district - Fox Elementary and highways 92, and 280.
3218 Upper Lock Ave, Belmont, CA 94002 is a 4 bedroom, 3 bathroom, 2,996 sqft single-family home in Plateau-Skymont, built in 1976. It last sold for $2,425,000 on Jun 30, 2023. This property is not currently displayed as for sale or rent on Trulia. The Trulia Estimate is $2,806,500, with a rent estimate of $7,659/month.

Home Details for 3218 Upper Lock Ave

Interior Features

Interior Details
BasementNumber of Rooms: 8Types of Rooms: Dining Room, Family Room, Laundry RoomWet Bar
Levels, Entrance, & Accessibility
Stories: 3Floors: Tile, Other, Carpet
Appliances & Utilities
Refrigerator

Exterior Features

Exterior Home Features
Roof: Other
Parking & Garage
GarageParking: Garage Attached

Property Information

Year Built
Year Built: 1976
Property Type / Style
Property Type: Single Family HomeArchitecture: Other

Community

Units in Building: 1

Lot Information

Lot Area: 7230 sqft

Price and Tax history

DateEventPrice
Jun 30, 2023
Source: N/A
Sold
$2,425,000
Jun 13, 2023
Source: MLSListings Inc #ML81928900
Pending
$2,595,000
Jun 5, 2023
Source: MLSListings Inc #ML81928900
Contingent
$2,595,000
May 19, 2023
Source: MLSListings Inc #ML81928900
Listed For Sale
$2,595,000
Dec 18, 2017
Source: N/A
Sold
$1,350,000

Market trends in Belmont

Last updated July 2026
Buyer'sMarketSeller'sMarket
Avg. sale price
—
Sale-to-List Price
—
Price per sq ft
—
Available listings
50
4MoM

Around this home

Neighborhood Overview

Plateau-Skymont
See Local Highlights
Neighborhood stats provided by third party data sources.

What Locals Say about Plateau-Skymont

At least 1 Trulia users voted on each feature.

  • 100 % Say neighbors are friendly

  • 100 % Say there are community events

  • 100 % Say they plan to stay for at least 5 years

  • 100 % Say there's holiday spirit

  • 100 % Say yards are well-kept

  • 100 % Say car is needed

  • 100 % Say people would walk alone at night

  • 100 % Say kids play outside

  • 100 % Say it's dog friendly

  • 100 % Say there's wildlife

  • 100 % Say it's walkable to grocery stores

  • 100 % Say parking is easy

Sourced by Trulia users. Learn more about our methodology.
  • Scroman
    "Lots of dogs owners. Dogs are leashed and most owners are top tier, clean up, and treat dogs well. No dogs left outside barking. "
    0
    Flag
  • Jenniemaruyama
    "Having a Caltrain station in Belmont is very convenient. Three tech companies pick their employees up at bus stops at El Camino Real and Ralston. Wonderful neighborhood. "
    0
    Flag
  • Volodymyrd
    " My favorite quality of San Mateo is its location. It's at the cross section highways in the SF Peninsula and a short drive to/from anywhere. CA 101 North is a short drive to San Francisco, South to San Jose. CA 92 East heads over the San Mateo Bridge to the East Bay, Oakland and Berkley. CA 92 West takes you over the hill to Half Moon Bay and some of the best surfing in the world. CA 280 was at one time called the 'Most beautiful Highway in the World' and is still my favorite way to travel the Bay Area."
    0
    Flag

LGBTQ Local Legal Protections

Frequently asked questions about 3218 Upper Lock Ave

  • What is 3218 Upper Lock Ave estimated to be worth?
    Trulia's estimated value for 3218 Upper Lock Ave in Belmont, CA is $2,806,500.
  • What is the price history for 3218 Upper Lock Ave?
    3218 Upper Lock Ave in Belmont, CA last sold for $2,425,000 in June 2023.
  • Is Belmont a buyer's or seller's market?
    Belmont is currently a seller's market, based on recent for-sale activity.
  • What are the closest schools to 3218 Upper Lock Ave?
    The closest schools to 3218 Upper Lock Ave in Belmont, CA are Carlmont High School (rated 10/10), Fox Elementary School (rated 10/10), Ralston Intermediate School (rated 10/10).
  • Does 3218 Upper Lock Ave have laundry facilities?
    Yes, 3218 Upper Lock Ave in Belmont, CA has laundry facilities.
  • How big is the lot at 3218 Upper Lock Ave?
    The lot at 3218 Upper Lock Ave in Belmont, CA is about 0.17 acres (7,230 sq ft).

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Apartments for Rent

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Off Market Homes Near 3218 Upper Lock Ave

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