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21660 Copley Dr
Diamond Bar, CA 91765 Walnut Valley

$5,426 USD/MO

Unknown For Lease  •  593+ SF

Property Details

  • Property Type Unknown
  • Year Built 1988
0 Transit Score
29 Walk Score

4 Spaces Available

Name Space Use Size Rent Details
1st Floor Ste 165 Office 593 SF Rate Upon Request
Suite 168 is contiguous to Suite 165 for a total of 1,188 SF.

  • Date available: Now
  • Lease term: Negotiable
  • Service type: Negotiable
  • Built out as: Standard Office
  • Space Type: Relet
1st Floor Ste 188 Office 8,423 SF Rate Upon Request
Suite with multiple offices

  • Date available: Now
  • Lease term: Negotiable
  • Service type: Negotiable
  • Built out as: Standard Office
  • Space Type: Relet
1st Floor Ste 190 Office 1,871 SF $34.80 USD/SF/YR
1,871 SF office space for lease

  • Date available: Aug 2025
  • Lease term: 3 - 10 Years
  • Service type: Full Service Gross
  • Space Type: Relet
2nd Floor Ste 268 Office 1,530 SF Rate Upon Request
Available 12/1/24

  • Date available: Now
  • Lease term: Negotiable
  • Service type: Negotiable
  • Built out as: Standard Office
  • Space Type: Relet

Description

A three-story, 51,000 square foot building accentuated by a rose tile and glass exterior located in Diamond Bar at 21660 East Copley Drive in the Gateway Corporate Office Park.

Highlights

Nearby restaurants, shops, and banks.
3-story building located in a business park designed for corporate headquarters
Located Minutes from the 10, 57, 71 & 60 Freeways
Broker Incentive programs available

Major Tenants

Tenant SF Occupied Lease End Date
24-Hour Medical Staffing Services, LLC. 3,766 SF
AIG Financial Network 8,500 SF
Chinacache North America Inc 3,940 SF 7/31/2014
Finance Group 2,579 SF
Greg Ashwill 3,603 SF
Lin Consulting Inc 3,339 SF
Ono Hawaiian BBQ 7,022 SF
PSI Services 3,327 SF
Tetra Tech Bas Geosciences 19,655 SF
US Inspector General 3,058 SF 5/31/2026

Public Transportation

Commuter RailDriveWalkDistance
Industry (Riverside Line - Southern California Regional Rail Authority (Metrolink)) 4 min - 1.9 mi
Downtown Pomona (Riverside Line - Southern California Regional Rail Authority (Metrolink)) 14 min - 9.9 mi
AirportDriveWalkDistance
Ontario International 22 min - 17.0 mi
John Wayne 28 min - 27.5 mi
Long Beach-Daugherty Field 38 min - 37.0 mi
Sean Kern 949-307-6625 Cushman & Wakefield
Sean Kern 949-307-6625 Cushman & Wakefield