OFF MARKET

Off Market Jul 2012 for $1M

$2,050,106

•

4,214

sq ft

18 Seminary Ridge Pl, Clayton, CA 94517

About this home

Single-familyProperty Type

2012Year Built

2.7 acresLot Size

$486Est. Price/Sq.Ft.

3 car garageParking

Listed by Eunice Chan •DRE #01009067 • Toll Brothers Real Estate,Inc

Bought with Stephanie Lopez •DRE #01370548 • Coldwell Banker

Redfin checked: 2 minutes ago

•Source:bridgeMLS, Bay East AOR, or Contra Costa AOR #40555336

Redfin Estimate

$2,050,106

$1.0M since sold in July 2012$3,000 since August

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 45.2% higher than the average sale price ($1.41M) of 6 comparable homes.

SOLD JUL 28, 2026
$1,432,500
A
4 beds3 baths2,848 sq ft
1016 Pine Hollow Ct, Clayton, CA 94517
SOLD MAY 5, 2026
$1,550,000
B
4 beds3.5 baths3,853 sq ft
1000 Froyd Rd, Concord, CA 94521
SOLD MAY 26, 2026
$1,372,000
C
4 beds3 baths2,802 sq ft
1267 Quiet Cir, Concord, CA 94521
SOLD AUG 12, 2026
$1,148,000
D
4 beds2.5 baths2,390 sq ft
55 La Honda Ct, Clayton, CA 94517
SOLD MAY 22, 2026
$1,550,000
E
4 beds3 baths2,879 sq ft
9013 Elk Dr, Clayton, CA 94517
SOLD JUL 27, 2026
$1,418,888
F
5 beds3 baths3,011 sq ft
5 Pardi Ln, Clayton, CA 94517

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Earn from this home

Sell

$1,383,475

Est. take-home

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Rent

$7,001/mo

Redfin rental estimate

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Market trends in 94517, CA

Last updated August 2026

Buyer's Market

Seller's Market

Seller's market

Sale-to-List Price

100.2%

0.6% MoM

Median sale price

$1.1M

$5K MoM

Avg. days on market

31d

10 days MoM

Recently sold homes

1 MoM

New listings for sale

OPEN TUE, 10AM TO 1PM
$775,000
3 beds2 baths1,389 sq ft
244 Stranahan Cir, Clayton, CA 94517
COMING SOON
$1,099,999
4 beds2.5 baths2,534 sq ft
5849 Mitchell Canyon Ct, Clayton, CA 94517
$1,395,000
4 beds3 baths3,008 sq ft
308 Ahwanee Ln, Clayton, CA 94517
$749,000
4 beds2 baths1,578 sq ft
1013 Panadero Way, Clayton, CA 94517
COMING SOON
$1,675,000
4 beds3 baths3,011 sq ft
4 Pardi Ln, Clayton, CA 94517
$499,000
2 beds2 baths1,026 sq ft
3905 Coyote Crk, Clayton, CA 94517
See all

Provided by Redfin

Sale history for 18 Seminary Ridge Pl

Year

Property tax

Land + Additions

Assessment*

2025

$20,076 (+2.3%)

$628,023 + $727,249

$1,355,272

2024

$19,616 (+2.2%)

$615,709 + $712,990

$1,328,699

2023

$19,193 (+0.9%)

$603,637 + $699,010

$1,302,647

2022

$19,018 (+1.9%)

$591,801 + $685,304

$1,277,105

2021

$18,671 (+1.3%)

$580,198 + $671,867

$1,252,065

2020

$18,439 (+2.1%)

$568,822 + $658,694

$1,227,516

2019

$18,066 (+3.0%)

$562,990 + $651,940

$1,214,930

2018

$17,535 (+6.0%)

$551,951 + $639,157

$1,191,108

2017

$16,544 (+2.7%)

$530,519 + $574,339

$1,104,858

2016

$16,101 (+1.2%)

$530,519 + $574,339

$1,104,858

2015

$15,915 (+1.6%)

$520,117 + $563,078

$1,083,195

2014

$15,663 (+2.4%)

$502,270 + $543,757

$1,046,027

2013

$15,289 (+152.6%)

$502,270 + $543,757

$1,046,027

2012

$6,052 (+133.7%)

$500,000 + $541,300

$1,041,300

2011

$2,590 (+1.1%)

$213,260

2010

$2,562 (+0.5%)

$209,079

2009

$2,550

$207,517

2008

$208,010

Tax history for 18 Seminary Ridge Pl

Year

Property tax

Land + Additions

Assessment*

2025

$20,076 (+2.3%)

$628,023 + $727,249

$1,355,272

2024

$19,616 (+2.2%)

$615,709 + $712,990

$1,328,699

2023

$19,193 (+0.9%)

$603,637 + $699,010

$1,302,647

2022

$19,018 (+1.9%)

$591,801 + $685,304

$1,277,105

2021

$18,671 (+1.3%)

$580,198 + $671,867

$1,252,065

2020

$18,439 (+2.1%)

$568,822 + $658,694

$1,227,516

2019

$18,066 (+3.0%)

$562,990 + $651,940

$1,214,930

2018

$17,535 (+6.0%)

$551,951 + $639,157

$1,191,108

2017

$16,544 (+2.7%)

$530,519 + $574,339

$1,104,858

2016

$16,101 (+1.2%)

$530,519 + $574,339

$1,104,858

2015

$15,915 (+1.6%)

$520,117 + $563,078

$1,083,195

2014

$15,663 (+2.4%)

$502,270 + $543,757

$1,046,027

2013

$15,289 (+152.6%)

$502,270 + $543,757

$1,046,027

2012

$6,052 (+133.7%)

$500,000 + $541,300

$1,041,300

2011

$2,590 (+1.1%)

$213,260

2010

$2,562 (+0.5%)

$209,079

2009

$2,550

$207,517

2008

$208,010

*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.

Public record

Public record
Permits

Beds

Baths

Stories

Lot width

—

Lot depth

—

Lot size

2.7 Acres

Year renovated

2012

Sq. Ft.

8,300

Year built

2012

Style

Single Family Residential

County

Contra Costa County

APN

1196300048

Parking Spaces

—

Basement

—

Accessible

—

HOA Dues

—

Garage

—

Features

—

Last updated by owner on Jul 13, 2026.

Mar 10, 2017 • Final

Building/residential/p/pool

Construct a new swimming pool with a slide and spa.

Pool and hot tub

Jul 30, 2013 • Final

Building - residential plumbing

Install a gas line for a fire pit.

Gas

Permit history is from public records and may be incomplete or inaccurate. Redfin and its agents make no representations about the property condition or permit status. Buyers should independently verify all information.

Property details

Parking

Parking Information
Has Attached Garage
Garage Spaces: 3
Covered Spaces: 3
Parking Features: Attached, Garage Door Opener

Interior

Bathroom Information
# of Bathrooms Total: 4
# of Bathrooms Full: 3
# of Bathrooms Partial: 1
Other Bathrooms Included Features: Shower Over Tub, Solid Surface
Primary Bathroom Included Features: Stall Shower, Sunken Tub, Tile

Interior Features
Interior Features: Family Room, Formal Dining Room, Library, Breakfast Nook, Stone Counters, Kitchen Island, Pantry
Appliances: Dishwasher, Double Oven, Disposal, Gas Range, Plumbed For Ice Maker, Microwave, Gas Water Heater
Laundry Features: 220 Volt Outlet, Gas Dryer Hookup, Hookups Only
Upper Level Features: 4 Bedrooms, 3 Baths, Primary Bedrm Suite - 1
Street Level Features: Main Entry
Fireplaces Total: 2
Has Fireplace
Flooring: Tile, Carpet

Room Information
Kitchen Features: 220 Volt Outlet,Breakfast Nook,Counter - Stone,Dishwasher,Double Oven,Garbage Disposal,Gas Range/Cooktop,Ice Maker Hookup,Island,Microwave,Pantry
Rooms Total: 12
Fireplace Features: Family Room, Gas

Exterior

Building Information
New Construction
Construction Materials: Stucco
Building Area Total: 4,214
Builder Name: Toll Brothers
Foundation Details: Slab

Exterior Features
Exterior Features: Back Yard, Front Yard
Door Features: Mirrored Closet Door(s)

Mobile Home Information
Model: Inverness

Property Information
Living Area: 4214
Living Area Units: Square Feet
Property Type: Residential
Property Sub Type: Single Family Residence
Year Built: 2012

Lot Information
Lot Size Square Feet: 117462
Lot Size Area: 2.7
Lot Size Units: Acres
Lot Size Acres: 2.7
Lot Features: Sloped Down, Premium Lot

Utilities

Utility Information
Water Source: Public
Electric: 220 Volts in Kitchen
Sewer: Public Sewer

Heating & Cooling
Has Heating
Heating: Zoned
Cooling: Zoned

Location

Homeowners Association Information
Pets Allowed: Yes

School Information
High School District: Mount Diablo (925) 682-8000

Public facts

Beds: 5
Baths: 5.0
Sq. Ft.: 8,300
Stories: 2.0
Lot Size: 2.7 acres
Style: Single Family Residential
Year Built: 2012
Year Renovated: 2012
County: Contra Costa County
APN: 1196300048

Home facts updated by county records on Jul 13, 2026

Around this home

Schools

Mt. Diablo Elementary School

Public K-5 • Assigned • 1.7mi

9/10

Diablo View Middle School

Public 6-8 • Assigned • 0.7mi

9/10

Northgate High School

Public 9-12 • Assigned • 4.9mi

9/10

Provided by GreatSchools

Lifestyle

Provided by Walk Score and Local Logic

Climate risks

1/10 Flood Factor

Minimal risk of a flood reaching the building in the next 30 years

8/10 Fire Factor

30% chance of being in a wildfire in next 30 years

4/10 Heat Factor

10 days above 93° expected this year, 20 days in 30 years

1/10 Wind Factor

Minimal risk of severe winds over next 30 years

9/10 Air Factor

17 unhealthy days expected this year, 18 days in 30 years

Provided by First Street

Historical weather

Clayton, CA • 94517

Average low and high temperatures (°F)

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Sun exposure

In this area, properties receive around 11.8 hours in June and 4.8 hours in December, placing it above the U.S. average for solar exposure.

11.8 hrs

4.8 hrs

JuneDecember

Provided by Shadowmap

Estimated sale price

$1.95M – $2.36M

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Nearby similar homes

OPEN TUE, 10AM TO 1PM

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3 beds2 baths1,389 sq ft

244 Stranahan Cir, Clayton, CA 94517

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4 beds2.5 baths2,141 sq ft

5706 Pepperridge Way, Concord, CA 94521

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4 beds3 baths3,714 sq ft

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New listings for sale in 94517

OPEN TUE, 10AM TO 1PM

$775,000

3 beds2 baths1,389 sq ft

244 Stranahan Cir, Clayton, CA 94517

COMING SOON

$1,099,999

4 beds2.5 baths2,534 sq ft

5849 Mitchell Canyon Ct, Clayton, CA 94517

$1,395,000

4 beds3 baths3,008 sq ft

308 Ahwanee Ln, Clayton, CA 94517

$749,000

4 beds2 baths1,578 sq ft

1013 Panadero Way, Clayton, CA 94517

COMING SOON

$1,675,000

4 beds3 baths3,011 sq ft

4 Pardi Ln, Clayton, CA 94517

$499,000

2 beds2 baths1,026 sq ft

3905 Coyote Crk, Clayton, CA 94517

Home values near 18 Seminary Ridge Pl

Data from public records.

Address	Redfin Estimate
26 Seminary Ridge Place, Clayton, CA 4 Beds \| 3.5 Baths \| 3910 Sq. Ft.	$1,849,318
14 Seminary Ridge Place, Clayton, CA 4 Beds \| 3.5 Baths \| 4214 Sq. Ft.	$2,005,806

Address	Redfin Estimate
22 Seminary Ridge Place, Clayton, CA 4 Beds \| 4 Baths \| 3910 Sq. Ft.	$1,866,519
15 Seminary Ridge Place, Clayton, CA 4 Beds \| 4 Baths \| 4235 Sq. Ft.	$2,002,543

Address	Redfin Estimate
10 Seminary Ridge Place, Clayton, CA 5 Beds \| 4 Baths \| 3691 Sq. Ft.	$1,616,961
23 Seminary Ridge Place, Clayton, CA 5 Beds \| 4.5 Baths \| 3910 Sq. Ft.	$1,903,374

Property information provided by bridgeMLS, Bay East AOR, or Contra Costa AOR when last listed in 2011. This data may not match . Learn more.

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About this home

Redfin Estimate

Earn from this home

Market trends in 94517, CA

Sale history for 18 Seminary Ridge Pl

Tax history for 18 Seminary Ridge Pl

Public record

Property details

Around this home

Schools

Lifestyle

Climate risks

Historical weather

Sun exposure

Nearby similar homes

New listings for sale in 94517

Home values near 18 Seminary Ridge Pl

More real estate resources