Are neighbors friendly in Plateau-Skymont, Belmont, CA?

As of early 2026, 100% of users say neighbors are friendly

Are there community events in Plateau-Skymont, Belmont, CA?

As of early 2026, 100% of users say there are community events

Do residents of Plateau-Skymont, Belmont, CA plan to stay at least 5 years?

As of early 2026, 100% of users say they plan to stay for at least 5 years

Does Plateau-Skymont, Belmont, CA show holiday spirit?

As of early 2026, 100% of users say there's holiday spirit

Are yards well-kept in Plateau-Skymont, Belmont, CA?

As of early 2026, 100% of users say yards are well-kept

Is a car needed in Plateau-Skymont, Belmont, CA?

As of early 2026, 100% of users say car is needed

Would people walk alone at night in Plateau-Skymont, Belmont, CA?

As of early 2026, 100% of users say people would walk alone at night

Do kids play outside in Plateau-Skymont, Belmont, CA?

As of early 2026, 100% of users say kids play outside

Is Plateau-Skymont, Belmont, CA dog-friendly?

As of early 2026, 100% of users say it's dog friendly

Is there wildlife in Plateau-Skymont, Belmont, CA?

As of early 2026, 100% of users say there's wildlife

Is Plateau-Skymont, Belmont, CA walkable to grocery stores?

As of early 2026, 100% of users say it's walkable to grocery stores

Is parking easy in Plateau-Skymont, Belmont, CA?

As of early 2026, 100% of users say parking is easy

What is 3217 Upper Lock Ave estimated to be worth?

Trulia's estimated value for 3217 Upper Lock Ave in Belmont, CA is $3,117,400 .

What is the price history for 3217 Upper Lock Ave?

3217 Upper Lock Ave in Belmont, CA last sold for $2,467,000 in December 2022.

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 3217 Upper Lock Ave?

The closest schools to 3217 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 3217 Upper Lock Ave have air conditioning?

Yes, 3217 Upper Lock Ave in Belmont, CA has air conditioning.

How big is the lot at 3217 Upper Lock Ave?

The lot at 3217 Upper Lock Ave in Belmont, CA is about 0.20 acres (8,581 sq ft).

OFF MARKET

$3,117,400

Trulia Estimate

3 Beds
4 Baths
2,570 sqft

3217 Upper Lock Ave, Belmont, CA 94002

Plateau-Skymont

Est. Refi. Payment $19,930/mo*

Refinance Your Home

Currently Off Market - Sold Dec 5, 2022 for $2,467,000

Home Value

Trulia Estimate

$3.12M

Since last month

$122K (+4.1%)

Since last year

$104K (+3.4%)

Since last sale

$644K (+26.1%)

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 +70% in the last 10 years

Month	Estimated value
2026
October 2026	$3.11M
September 2026	$2.99M
August 2026	$2.97M
July 2026	$2.98M
June 2026	$2.98M
May 2026	$3.02M
April 2026	$3.03M
March 2026	$3.07M
February 2026	$3.03M
January 2026	$2.84M
2025
December 2025	$2.9M
November 2025	$2.97M
October 2025	$3.01M
September 2025	$2.99M
August 2025	$2.92M
July 2025	$2.96M
June 2025	$2.96M
May 2025	$2.99M
April 2025	$3.01M
March 2025	$3.08M
February 2025	$3.01M
January 2025	$2.96M
2024
December 2024	$2.95M
November 2024	$2.98M
October 2024	$2.95M
September 2024	$2.92M
August 2024	$2.9M
July 2024	$2.86M
June 2024	$2.76M
May 2024	$2.64M
April 2024	$2.72M
March 2024	$2.64M
February 2024	$2.58M
January 2024	$2.6M
2023
December 2023	$2.5M
November 2023	$2.49M
October 2023	$2.44M
September 2023	$2.48M
August 2023	$2.55M
July 2023	$2.51M
June 2023	$2.4M
May 2023	$2.37M
April 2023	$2.41M
March 2023	$2.39M
February 2023	$2.42M
January 2023	$2.44M
2022
December 2022	$2.45M
November 2022	$2.51M
October 2022	$2.56M
September 2022	$2.55M
August 2022	$2.6M
July 2022	$2.75M
June 2022	$2.97M
May 2022	$3.12M
April 2022	$3.19M
March 2022	$3.2M
February 2022	$2.7M
January 2022	$2.58M
2021
December 2021	$2.53M
November 2021	$2.52M
October 2021	$2.46M
September 2021	$2.44M
August 2021	$2.46M
July 2021	$2.56M
June 2021	$2.61M
May 2021	$2.67M
April 2021	$2.65M
March 2021	$2.48M
February 2021	$2.38M
January 2021	$2.42M
2020
December 2020	$2.39M
November 2020	$2.42M
October 2020	$2.43M
September 2020	$2.36M
August 2020	$2.27M
July 2020	$2.18M
June 2020	$2.19M
May 2020	$2.16M
April 2020	$2.33M
March 2020	$2.22M
February 2020	$2.18M
January 2020	$2.12M
2019
December 2019	$2.11M
November 2019	$2.12M
October 2019	$2.17M
September 2019	$2.16M
August 2019	$2.2M
July 2019	$2.21M
June 2019	$2.36M
May 2019	$2.27M
April 2019	$2.28M
March 2019	$2.21M
February 2019	$2.22M
January 2019	$2.21M
2018
December 2018	$2.23M
November 2018	$2.2M
October 2018	$2.18M
September 2018	$2.29M
August 2018	$2.35M
July 2018	$2.36M
June 2018	$2.36M
May 2018	$2.3M
April 2018	$2.25M
March 2018	$2.24M
February 2018	$2.15M
January 2018	$2.15M
2017
December 2017	$2.18M
November 2017	$2.1M
October 2017	$2.08M
September 2017	$2.04M
August 2017	$1.92M
July 2017	$1.94M
June 2017	$1.96M
May 2017	$1.97M
April 2017	$1.95M
March 2017	$1.96M
February 2017	$1.93M
January 2017	$1.89M
2016
December 2016	$1.81M
November 2016	$1.79M
October 2016	$1.83M

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
3308 Plateau Dr, Belmont, CA	0.03	Single-Family Home	$2,920,000	08/31/26	3	2.5	1,740
2920 San Juan Blvd, Belmont, CA	0.21	Single-Family Home	$2,660,000	10/24/25	4	3	2,520
2706 Belmont Canyon Rd, Belmont, CA	0.09	Single-Family Home	$3,300,000	08/21/26	5	3.5	3,270
2937 San Juan Blvd, Belmont, CA	0.14	Single-Family Home	$2,100,000	04/28/26	3	2	2,050
3402 Hillcrest Dr, Belmont, CA	0.08	Single-Family Home	$3,000,000	10/08/26	3	2	1,865
3860 W Naughton Ave, Belmont, CA	0.38	Single-Family Home	$3,200,000	04/09/26	4	3.5	2,620
3806 Naughton Ave, Belmont, CA	0.21	Single-Family Home	$3,800,000	12/12/25	5	4	2,806
3513 Hillcrest Dr, Belmont, CA	0.22	Single-Family Home	$1,940,000	06/24/26	3	2.5	1,760
3208 Upper Lock Ave, Belmont, CA	0.07	Single-Family Home	$2,100,000	03/24/26	4	2	2,210
3412 Plateau Dr, Belmont, CA	0.22	Single-Family Home	$3,100,000	06/11/26	4	3	2,180

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
3219 Upper Lock Ave, Belmont, CA 94002	0.01	$1,951,300	3	2	1,080	Off Market
3215 Upper Lock Ave, Belmont, CA 94002	0.01	$2,339,000	3	2	1,500	Off Market
3221 Upper Lock Ave, Belmont, CA 94002	0.02	$2,567,300	3	3	2,010	Off Market
3213 Upper Lock Ave, Belmont, CA 94002	0.02	$4,138,200	5	5	3,073	Off Market
3304 Plateau Dr, Belmont, CA 94002	0.03	$2,673,700	3	2	1,660	Off Market
3306 Plateau Dr, Belmont, CA 94002	0.03	$2,643,700	3	3	1,750	Off Market
3229 Upper Lock Ave, Belmont, CA 94002	0.03	$3,699,200	4	2.5	2,860	Off Market
3225 Upper Lock Ave, Belmont, CA 94002	0.03	$2,889,400	3	2.5	2,270	Off Market
3308 Plateau Dr, Belmont, CA 94002	0.03	$2,920,000	3	2.5	1,740	Recently Sold
Upper Lock Ave, Belmont, CA 94002	0.03	-	-	-	-	Off Market
3300 Plateau Dr, Belmont, CA 94002	0.04	$2,718,700	3	2	1,710	Off Market
3222 Upper Lock Ave, Belmont, CA 94002	0.04	$2,441,700	4	3	2,086	Off Market
3220 Upper Lock Ave, Belmont, CA 94002	0.04	$3,042,300	3	2.5	2,740	Off Market
3224 Upper Lock Ave, Belmont, CA 94002	0.04	-	3	-	1,530	Off Market
3233 Upper Lock Ave, Belmont, CA 94002	0.04	$2,462,800	2	2	1,910	Off Market
3233 Upper Lock Ave, Belmont, CA 94002	0.04	-	-	-	-	Off Market
3218 Upper Lock Ave, Belmont, CA 94002	0.04	$2,941,800	4	3	2,996	Off Market
3226 Upper Lock Ave, Belmont, CA 94002	0.04	$2,792,900	4	4	2,280	Off Market
3216 Upper Lock Ave, Belmont, CA 94002	0.05	$3,013,300	4	2.5	3,050	Off Market
3312 Plateau Dr, Belmont, CA 94002	0.05	$3,010,000	3	2	1,975	Off Market

Local Information

Map ViewExplore the area around 3217 Upper Lock Ave.
Schools1 Elementary School1 Middle School1 High School
Shop & Eat

-- mins to

Commute Destination

Home Highlights

Single-Family Home

Built in 1962

2,570 sqft

$1,213/sqft

Garage

About this House

What's unique:Modern profileLarge backyardOffice spaceHigh ceilingsLots of lightFull en suite

This single-family home is located at 3217 Upper Lock Ave, Belmont, CA. 3217 Upper Lock Ave is in the Plateau-Skymont neighborhood in Belmont, CA and in ZIP code 94002. This property has 3 bedrooms, 4 bathrooms and approximately 2,570 sqft of floor space. This property has a lot size of 8581 sqft and was built in 1962.

3217 Upper Lock Ave, Belmont, CA 94002 is a 3 bedroom, 4 bathroom, 2,570 sqft single-family home in Plateau-Skymont, built in 1962. It last sold for $2,467,000 on Dec 5, 2022. This property is not currently displayed as for sale or rent on Trulia. The Trulia Estimate is $3,117,400.

Home Details for 3217 Upper Lock Ave

Interior Features
Levels, Entrance, & Accessibility Stories: 2
Interior Details Number of Rooms: 8
Heating & Cooling Air ConditioningCooling System: Central

Property Information
Year Built Year Built: 1962
Property Type / Style Property Type: Single Family Home

Exterior Features
Parking & Garage GarageParking Spaces: 2Parking: Garage Attached

Community
Units in Building: 1

Lot Information
Lot Area: 8581 sqft

Price and Tax history

Date	Event	Price
Dec 5, 2022 Source: N/A	Sold	$2,467,000
Nov 1, 2022 Source: MLSListings Inc #ML81910626	Contingent	$2,498,000
Oct 16, 2022 Source: MLSListings Inc #ML81910626	Listed For Sale	$2,498,000
Dec 30, 1997 Source: N/A	Sold	$468,000

Year	Property tax	Tax assessment
2026	Unavailable	$2,617,998

Additional Cost

Market trends in Belmont

Last updated September 2026

Avg. sale price

—

Sale-to-List Price

—

Price per sq ft

—

Available listings

2MoM

Sourced by Trulia Market Trends

Around this home

Fox Elementary School
K-5
Public
420 Students
Belmont-Redwood Shores Elementary School District
10/10
GreatSchools Rating
Parent Rating Average
my experience, this school supports students' mental health and emotional well-being
Parent Review
2y ago
13 Reviews

View nearby schools on GreatSchools

The GreatSchools Rating compares schools on a variety of school quality indicators including test scores, college readiness, equity and more. Learn more.

Neighborhood Overview

Plateau-Skymont

8 Homes For You
Buy: $225k - $5.8m

See Local Highlights

Neighborhood stats provided by third party data sources.

What Locals Say about Plateau-Skymont

This October

Trick-or-Treat Score

Built from what locals say about Plateau-Skymont.

100% say neighbors are friendly
100% say there are community events
100% say there's holiday spirit

Trulia Trick or TreatStart Ghost Hunt

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
Resident
2y ago
"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
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Jenniemaruyama
Resident
8y ago
"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
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Volodymyrd
Resident
9y ago
" 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."
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LGBTQ Local Legal Protections

Frequently asked questions about 3217 Upper Lock Ave

What is 3217 Upper Lock Ave estimated to be worth?
Trulia's estimated value for 3217 Upper Lock Ave in Belmont, CA is $3,117,400.
What is the price history for 3217 Upper Lock Ave?
3217 Upper Lock Ave in Belmont, CA last sold for $2,467,000 in December 2022.
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 3217 Upper Lock Ave?
The closest schools to 3217 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 3217 Upper Lock Ave have air conditioning?
Yes, 3217 Upper Lock Ave in Belmont, CA has air conditioning.
How big is the lot at 3217 Upper Lock Ave?
The lot at 3217 Upper Lock Ave in Belmont, CA is about 0.20 acres (8,581 sq ft).