421 Williams Pl, San Mateo, CA 94401
OFF MARKET

421 Williams Pl
San Mateo, CA 94401

San Mateo Heights
  • 2 Beds
  • 1 Bath
  • 891 sqft

$1,228,600

Trulia Estimate
as of Jul 26, 2026
Est. Refi. Payment $7,454/mo*
Refinance Your Home

$1,228,600

Trulia Estimate
as of Jul 26, 2026
Est. Refi. Payment $7,454/mo*
Refinance Your Home
2 Beds
1 Bath
891 sqft

Local Information

  • Map ViewExplore the area around 421 Williams Pl.
  • Schools1 Elementary School1 Middle School1 High School
  • Shop & Eat
-- mins to
Commute Destination

Home Highlights

Property Type
Single-Family Home
Year Built
1929
Living Area
891 sqft
Price/Sqft
$1,379
Parking
Garage

About this House

Picture Perfect home on Storybook Cul-de-Sac street.. Ideally Located & Central to all Amenities. Easy stroll to Downtown San Mateo, Burlingame, Cal-Train; minutes to Fwy for your commute. Charm,Style, Pristine. Hardwood Floors, Totally Remodeled Kitchen with Custom Granite, Stainless Appl, Cork Flooring, Sunlight Streaming in the Many Windows, and FP to keep warm on chill evenings. See and Enjoy!
421 Williams Pl, San Mateo, CA 94401 is a 2 bedroom, 1 bathroom, 891 sqft single-family home in San Mateo Heights, built in 1929. It last sold for $840,000 on Oct 10, 2014. It is currently off market. The Trulia Estimate is $1,228,600, with a rent estimate of $3,869/month.

Home Details for 421 Williams Pl

Property Information

Year Built
Year Built: 1929
Property Type / Style
Property Type: Single Family Home

Interior Features

Interior Details
Number of Rooms: 5

Exterior Features

Parking & Garage
GarageParking: Garage Attached

Community

Units in Building: 1

Lot Information

Lot Area: 3049 sqft

Price History for 421 Williams Pl

DatePriceEventSource
10/10/2014$840,000Sold
N/A
09/20/2014$774,950PendingAgent Provided
08/29/2014$774,950Listed For SaleAgent Provided
09/29/2000$540,000Sold
N/A
08/19/1997$234,000Sold
N/A

Market trends in San Mateo

Last updated June 2026
Buyer'sMarketSeller'sMarket
Avg. sale price
$1.81M
$123KMoM
Sale-to-List Price
107.0%
0.4%MoM
Price per sq ft
$1.17K
$63MoM
Available listings
179
21MoM
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Property Tax and Assessment

Year2025
Tax$13,176
Assessment$1,009,546
Home facts updated by county records

Comparable Sales for 421 Williams Pl

Address
Distance
Property Type
Sold Price
Sold Date
Bed
Bath
Sqft
420 Williams Pl, San Mateo, CA
0.01
Single-Family Home
$1,290,000
11/05/25
2
1
920
226 Chesterton Pl, San Mateo, CA
0.27
Single-Family Home
$1,200,000
09/08/25
2
1
1,150
415 W Ellsworth Ct, San Mateo, CA
0.11
Single-Family Home
$1,600,000
05/28/26
2
1
1,120
18 Saint Johns Ct, San Mateo, CA
0.31
Single-Family Home
$1,400,000
08/25/25
2
1
1,130
439 Wisnom Ave, San Mateo, CA
0.17
Single-Family Home
$1,650,000
05/12/26
2
2
1,060
107 Grand Blvd, San Mateo, CA
0.20
Single-Family Home
$1,780,000
07/20/26
2
1.5
1,136
235 Ramona St, San Mateo, CA
0.29
Single-Family Home
$1,720,000
01/26/26
2
1
1,280
453 Highland Ave, San Mateo, CA
0.12
Single-Family Home
$1,187,000
10/01/25
3
2
1,570
240 N Humboldt St, San Mateo, CA
0.64
Single-Family Home
$1,202,000
03/17/26
2
1
970
252 N Fremont St, San Mateo, CA
0.53
Single-Family Home
$1,275,000
12/08/25
3
1
1,050

Nearby homes

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Assigned Schools

These are the assigned schools for 421 Williams Pl.
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

San Mateo Heights
See Local Highlights
Neighborhood stats provided by third party data sources.

What Locals Say about San Mateo Heights

At least 42 Trulia users voted on each feature.

  • 94 % Say there are sidewalks

  • 88 % Say it's walkable to grocery stores

  • 84 % Say it's walkable to restaurants

  • 81 % Say it's dog friendly

  • 68 % Say people would walk alone at night

  • 62 % Say parking is easy

  • 61 % Say streets are well-lit

  • 58 % Say car is needed

  • 55 % Say it's quiet

  • 48 % Say there's holiday spirit

  • 47 % Say they plan to stay for at least 5 years

  • 45 % Say kids play outside

  • 43 % Say neighbors are friendly

  • 43 % Say there's wildlife

  • 41 % Say yards are well-kept

  • 11 % Say there are community events

Sourced by Trulia users. Learn more about our methodology.
  • Trulia User
    "Very friendly and kind neighbors that offer to watch our dog or just stop and have a chat. All in all nice and safe "
    0
    Flag
  • Ff6790
    "101 is busy in the mornings, takes about an hour to get to San Jose. Very nice area and lots of beautiful nature near by."
    5
    Flag
  • Shirley K.
    "As a former tenant in a single family home, I loved the area. Friendly, quiet, convenient."
    1
    Flag

LGBTQ Local Legal Protections

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Homes for sale near 421 Williams Pl

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Off Market Homes Near 421 Williams Pl

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