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$999,000 Just Listed

  • For Sale
  • Active
  • Single Family
  • 4 Beds
  • 1 Full Bath
  • 2 Partial Baths
  • 2,324 Sq. Ft.
  • 3 Car Garage
  • Updated 17 hours ago
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Nestled in highly desirable Diamond Bar, 627 Mount Street is a stunning two-story home that perfectly blends comfort and potential. With four spacious bedrooms and three bathrooms, this home's open floor plan is highlighted by vaulted ceilings in the living room, a statement fireplace, and a welcoming family room off the kitchen made for gatherings. Upstairs, a generous den offers endless possibilities, whether as a game room, second family room, or your personal retreat. Step outside to a large lot complete with a sparkling pool, brick patio and cooking area, and breathtaking hill views, perfect for relaxing or entertaining. Add in a three-car garage and an expansive driveway, and you have a home that's as practical as it is beautiful. Don't miss your chance to live the Southern California dream. This is a probate sale with court confirmation required.

Full Property Details for 627 Mount St

General

  • Price: $999,000
  • Status: Active
  • Type: Single Family
  • Source: CLAW
  • MLS ID: 26831225
  • Updated: 5/8/2026
  • Added to Site: 1 day(s) ago

Interior

  • Rooms/Areas: Living Room, Separate Family Room, Dining Room, Jack And Jill
  • Fireplace: Yes
  • Number of Fireplaces: 1
  • Furnishings: Unfurnished
  • Flooring: Carpet, Ceramic Tile, Parquet

Rooms

Bathrooms

  • Total Bathrooms: 3
  • Full Bathrooms: 1
  • 3/4 Bathrooms: 2

Bedrooms

  • Total Bedrooms: 4

Other Rooms

  • Family Room: 1
  • Laundry: Garage

Additional Information

  • Pool: Yes
  • Pool Description: In-Ground, Gunite
  • Spa: Yes
  • Spa Description: Above-Ground
  • Other Features: None

Parking

  • Garage: Yes
  • Garage Spaces: 3
  • Garage Description: Garage - 3 Car, Garage Is Attached, Direct Entrance

Location

  • Area: Diamond Bar
  • County: Los Angeles
  • Driving Directions: Golden Springs Dr to Golden Prados Dr to Mount Street.

Heating & Cooling

  • Cooling Type: Central
  • Heating Type: Central

Structural Information

  • Structure Type: Single Family Residence
  • Common Walls: Detached/No Common Walls
  • Stories/Levels: 2
  • Square Feet: 2,324
  • Sq. Ft. Source: Vendor Enhanced
  • Year Built: 1972
  • Year Built Source: Vendor Enhanced

Additional Structures

  • Other Structures: None

Lot Features

  • Property View: Hills, Tree Top
  • Lot Size (Acres): 0.2797
  • Lot Size: 12184
  • Lot Size Source: Vendor Enhanced
  • Lot Dimensions: 86 x 140
  • Zoning: LCR18000*

Financial Considerations

  • Price Per Sq. Ft.: $429.86
  • Assessment Year: 1972

Disclosures and Reports

  • Disclosures/Reports: Probate, As Is
  • APN: 8717-021-036

Listed by Compass, Whit Prouty

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Listing agent

— 627 Mount St —

  • Whit Prouty

    Compass

Get Pre-Approved Today

Be ready to buy your new home!

with our affiliated lender
NMLS#: 1598647

Get Pre-Approved

Be ready to buy your new home!

with our affiliated lender
NMLS#: 1598647

Get Pre-Approved

Schools serving 627 Mount St

School District:Pomona Unified School District
NameGradesDistance
Armstrong Elementary School
22750 Beaverhead Drive, Diamond Bar, CA 91765
K-60.8 mi
Lorbeer Middle School
501 South Diamond Bar Boulevard, Diamond Bar, CA 91765
7-80.6 mi
Diamond Ranch High School
100 Diamond Ranch Road, Pomona, CA 91766
9-122.2 mi
Disclaimer: School attendance boundaries provided by ATTOM Data Solutions and are for reference only. Contact the school directly to verify enrollment eligibility.

Price & Sales History for 627 Mount St Get Price Alerts and Save Property

Date
Details
Price
Change
Source
5/07/2026
Listed
$999,000
347.98%
MLS
2/19/1988
Sold
$223,000
—
Public Record
Get Price Alerts and Save Property
Disclaimer: Historical sales information is derived from public records provided by the county offices. Information is not guaranteed and should be independently verified.

Tax History for 627 Mount St

Year
Property Taxes
Change
Tax Assessment
Change
2025
$6,184
13%
$426,809
4%
2023
$5,493
2%
$410,237
2%
2022
$5,405
2%
$402,195
2%
2021
$5,278
—
$394,310
1%
2020
$5,258
-2%
$390,268
2%
2019
$5,382
8%
$382,617
2%
2018
$4,979
2%
$375,115
2%
2017
$4,892
5%
$367,761
2%
2016
$4,663
1%
$360,551
2%
2015
$4,624
1%
$355,136
2%
2014
$4,594
1%
$348,180
—
2013
$4,553
—
$346,608
—
View All
Disclaimer: Historical tax information is derived from public records provided by the county offices. Information is not guaranteed and should be independently verified.

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*These costs are estimates, and the interest rates assume exceptional credit standing.

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NMLS#: 1598647

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Listed by Compass, Whit Prouty

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627 Mount St, Diamond Bar, CA 91765 (MLS# 26831225) is a Single Family property with 4 bedrooms, 1 full bathroom and 2 partial bathrooms. 627 Mount St is currently listed for $999,000 and was received on May 07, 2026. Want to learn more about 627 Mount St? Do you have questions about finding other Single Family real estate for sale in Diamond Bar? You can browse all Diamond Bar real estate or contact a Coldwell Banker agent to request more information.

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