OFF MARKET

Off Market Sep 2017 for $1.3M

$1,754,236

Est. refi paymentEst. refi $8,720/mo

•

3,691

sq ft

9 Seminary Ridge Pl, Clayton, CA 94517

About this home

Executive style living at Diablo Estates. This home features designer details throughout including Nottoway hickory hardwood flooring, high ceilings, recessed lighting, custom Restoration Hardware interior paint & fixtures, built-in interior & exterior surround sound system and abundant windows with plantation shutters. Gas fireplace with a cast mantle in family room. Formal dining room w/ slider that opens to the enclosed outdoor patio. Custom gourmet kitchen with soft-close cabinets, granite countertops, island w/ pendant lighting, butler's pantry & breakfast bar. Luxurious master suite w/ spacious master bath that includes a tile surround stall shower, acrylic tub, dual vanity & powder area w/ marble countertops & walk-in closet. Entertainers dream yard with a covered outdoor kitchen, a custom stone fireplace, water feature, entertainment center, lush lawn, horseshoe or bocce ball area & spectacular views of the valley, rolling hills & delta. This home is an absolute must see!

Single-familyProperty Type

2013Year Built

0.48 acresLot Size

$475Est. Price/Sq.Ft.

3 car garageParking

Listed by Wendy Moore •DRE #01408930 • Alain Pinel Realtors

Bought with Bob Mitchell •DRE #01482516 • Coldwell Banker

Redfin checked: 2 minutes ago

•Source:bridgeMLS, Bay East AOR, or Contra Costa AOR #40786095

Redfin Estimate

$1,754,236

$429K since sold in September 2017$6,000 since August

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 22.9% higher than the average sale price ($1.43M) of 6 comparable homes.

SOLD JUL 27, 2026
$1,418,888
A
5 beds3 baths3,011 sq ft
5 Pardi Ln, Clayton, CA 94517
SOLD AUG 21, 2026
$1,200,000
B
5 beds3 baths2,458 sq ft
332 Chardonnay Cir, Clayton, CA 94517
SOLD APR 15, 2026
$1,350,000
C
5 beds3 baths3,602 sq ft
376 Blue Oak Ln, Clayton, CA 94517
SOLD APR 17, 2026
$1,310,000
D
5 beds4 baths2,960 sq ft
510 Mt Davidson Ct, Clayton, CA 94517
SOLD APR 15, 2026
$1,850,000
E
5 beds3 baths3,060 sq ft
3 Rachel Ranch Ct, Clayton, CA 94517
SOLD MAR 20, 2026
$1,435,000
F
5 beds3 baths3,596 sq ft
362 Blue Oak Ln, Clayton, CA 94517

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Earn from this home

Sell

$802,139

Est. take-home

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Refinance

Est. cash available

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Rent

$6,452/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 9 Seminary Ridge Pl

Year

Property tax

Land + Additions

Assessment*

2025

$22,636 (+2.3%)

$638,320 + $946,671

$1,584,991

2024

$22,120 (+2.1%)

$625,804 + $928,109

$1,553,913

2023

$21,662 (+0.9%)

$613,534 + $909,911

$1,523,445

2022

$21,467 (+1.9%)

$601,504 + $892,070

$1,493,574

2021

$21,070 (+1.2%)

$589,710 + $874,579

$1,464,289

2020

$20,829 (+2.0%)

$578,148 + $857,431

$1,435,579

2019

$20,428 (+5.6%)

$572,220 + $848,640

$1,420,860

2018

$19,343 (+19.2%)

$561,000 + $832,000

$1,393,000

2017

$16,226 (+2.8%)

$475,309 + $595,720

$1,071,029

2016

$15,791 (+1.2%)

$475,309 + $595,720

$1,071,029

2015

$15,607 (+1.6%)

$465,990 + $584,040

$1,050,030

2014

$15,359 (+172.3%)

$450,000 + $564,000

$1,014,000

2013

$5,641 (+9.1%)

$450,000 + $564,000

$1,014,000

2012

$5,169

$166,095

Tax history for 9 Seminary Ridge Pl

Year

Property tax

Land + Additions

Assessment*

2025

$22,636 (+2.3%)

$638,320 + $946,671

$1,584,991

2024

$22,120 (+2.1%)

$625,804 + $928,109

$1,553,913

2023

$21,662 (+0.9%)

$613,534 + $909,911

$1,523,445

2022

$21,467 (+1.9%)

$601,504 + $892,070

$1,493,574

2021

$21,070 (+1.2%)

$589,710 + $874,579

$1,464,289

2020

$20,829 (+2.0%)

$578,148 + $857,431

$1,435,579

2019

$20,428 (+5.6%)

$572,220 + $848,640

$1,420,860

2018

$19,343 (+19.2%)

$561,000 + $832,000

$1,393,000

2017

$16,226 (+2.8%)

$475,309 + $595,720

$1,071,029

2016

$15,791 (+1.2%)

$475,309 + $595,720

$1,071,029

2015

$15,607 (+1.6%)

$465,990 + $584,040

$1,050,030

2014

$15,359 (+172.3%)

$450,000 + $564,000

$1,014,000

2013

$5,641 (+9.1%)

$450,000 + $564,000

$1,014,000

2012

$5,169

$166,095

*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

0.48 Acres

Year renovated

2013

Sq. Ft.

3,691

Year built

2013

Style

Single Family Residential

County

Contra Costa County

APN

1196300147

Parking Spaces

—

Basement

—

Accessible

—

HOA Dues

—

Garage

—

Features

—

Last updated by owner on Jul 13, 2026.

Property details

Parking

Parking Information
Has Attached Garage
Garage Spaces: 3
Covered Spaces: 3
Parking Features: Attached, Int Access From Garage, Side Yard Access, Garage Door Opener

Interior

Virtual Tour

Bathroom Information
# of Bathrooms Total: 4
# of Bathrooms Full: 4
Other Bathrooms Included Features: Shower Over Tub, Solid Surface, Updated Baths
Primary Bathroom Included Features: Solid Surface, Split Bath, Stall Shower, Tub, Updated Baths

Interior Features
Interior Features: Dining Area, Family Room, Formal Dining Room, Kitchen/Family Combo, Breakfast Bar, Breakfast Nook, Stone Counters, Eat-in Kitchen, Kitchen Island, Pantry, Updated Kitchen
Appliances: Dishwasher, Double Oven, Disposal, Gas Range, Plumbed For Ice Maker, Microwave, Refrigerator, Gas Water Heater
Laundry Features: 220 Volt Outlet, Gas Dryer Hookup, Hookups Only, Laundry Room
Upper Level Features: 3 Bedrooms, 3 Baths, Primary Bedrm Suite - 1, Laundry Facility
Street Level Features: 1 Bedroom, 1 Bath, No Steps to Entry, Main Entry
Window Features: Window Coverings
Fireplaces Total: 2
Has Fireplace
Flooring: Hardwood, Tile, Carpet

Room Information
Kitchen Features: Breakfast Bar,Breakfast Nook,Counter - Stone,Dishwasher,Double Oven,Eat In Kitchen,Garbage Disposal,Gas Range/Cooktop,Ice Maker Hookup,Island,Microwave,Pantry,Refrigerator,Updated Kitchen
Rooms Total: 11
Fireplace Features: Family Room, Gas

Exterior

Building Information
Construction Materials: Stucco
Building Area Total: 3,691
Builder Name: Toll
Foundation Details: Slab

Exterior Features
Patio And Porch Features: Covered
Exterior Features: Back Yard, Dog Run, Front Yard, Garden/Play, Side Yard, Sprinklers Automatic, Sprinklers Back, Sprinklers Front, Terraced Down
Fencing: Fenced

Mobile Home Information
Model: Belvedere Spanish

Pool Information
Pool Features: Possible Pool Site

Property Information
Living Area: 3691
Living Area Units: Square Feet
Property Type: Residential
Property Sub Type: Single Family Residence
Year Built: 2013

Lot Information
Lot Size Square Feet: 20909
Lot Size Area: 0.48
Lot Size Units: Acres
Lot Size Acres: 0.48
Lot Features: Premium Lot

Utilities

Utility Information
Water Source: Public
Sewer: Public Sewer

Heating & Cooling
Has Heating
Heating: Zoned
Cooling: Ceiling Fan(s), Zoned

Location

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

Public facts

Beds: 5
Baths: 4.0
Sq. Ft.: 3,691
Stories: 2.0
Lot Size: 0.48 acres
Style: Single Family Residential
Year Built: 2013
Year Renovated: 2013
County: Contra Costa County
APN: 1196300147

Home facts updated by county records on Jul 13, 2026

Around this home

Schools

Mt. Diablo Elementary School

Public K-5 • Assigned • 1.6mi

9/10

Diablo View Middle School

Public 6-8 • Assigned • 0.6mi

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

29% 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

$1.67M – $2.02M

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Nearby similar homes

OPEN TUE, 10AM TO 1PM

$775,000

3 beds2 baths1,389 sq ft

244 Stranahan Cir, Clayton, CA 94517

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864 Coachman Pl, Clayton, CA 94517

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3 beds2 baths1,794 sq ft

5545 Southbrook Dr, Clayton, CA 94517

$899,000

4 beds2.5 baths1,974 sq ft

1325 New Hampshire Dr, Concord, CA 94521

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6 beds3 baths3,384 sq ft

1011 Froyd Rd, Concord, CA 94521

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 9 Seminary Ridge Pl

Data from public records.

Address	Redfin Estimate
26 Seminary Ridge Pl, Clayton, CA 4 Beds \| 3.5 Baths \| 3910 Sq. Ft.	$1,849,318
10 Seminary Ridge Pl, Clayton, CA 5 Beds \| 4 Baths \| 3691 Sq. Ft.	$1,616,961

Address	Redfin Estimate
18 Seminary Ridge Pl, Clayton, CA 4 Beds \| 3.5 Baths \| 4214 Sq. Ft.	$2,050,106
14 Seminary Ridge Pl, Clayton, CA 4 Beds \| 3.5 Baths \| 4214 Sq. Ft.	$2,005,806

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

Property information provided by bridgeMLS, Bay East AOR, or Contra Costa AOR when last listed in 2017. This data may not match . Learn more.

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GreatSchools Ratings provided by GreatSchools.org.

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About this home

Redfin Estimate

Earn from this home

Market trends in 94517, CA

Sale history for 9 Seminary Ridge Pl

Tax history for 9 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 9 Seminary Ridge Pl

More real estate resources