556 N Diamond Bar Blvd, Diamond Bar, CA 91765

Building Details

Year Built

1987

Listing office Lee & Associates j***@lee-associates.com Show Phone

Listing date Jun 29, 2026

Source Lee-associates

Displayed information is deemed reliable but is not guaranteed and should be independently verified.

All listing content including descriptions, pricing, images are the copyrighted material of Lee & Associates

Report an issue

---

Overview

The Sunset Plaza Professional Building is a three-story, Class B multi-tenant office property built in 1988 and maintained by current ownership. The asset totals 47,196 square feet and sits on 2.76 acres, with an on-site parking ratio of 4.0 stalls per 1,000 square feet. A reciprocal parking agreement with Global Mission Church, located immediately adjacent, provides additional weekday and Saturday parking access through March 18, 2033, adding 49 stalls during 6:00 AM to 6:30 PM.

The building is positioned along highly traveled North Diamond Bar Boulevard frontage, reported at 38,000 vehicles per day. The property is currently 95.1% occupied, with 31 signed tenants across the building and no single tenant representing more than 21% of occupied space. Building systems and safety infrastructure have undergone recent capital upgrades.

For tenants and buyers seeking an established office platform, the multi-tenant configuration supports a range of professional uses within a maintained, upgraded building. The tenant roster is diversified by leasing concentration, and the parking setup combines on-site spaces with access to additional stalls under the in-place reciprocal agreement.

Suggested Use

Real Estate Agency Restaurant Law Firm Spa & Massage Center Dental Office Hair Salon Nail Salon Building Supply Auto Repair Shop Gym & Fitness Center

Zoning and permitted uses should be independently verified with local authorities.

Location Insight

• Map
• Local Demand

City

Diamond Bar

County

Los Angeles

State

California

Longitude

-117.80861

Latitude

34.0300219

Nearby Similar for Sale

• 

  $889,900

  1,510 SF

  Diamond Bar Commercial Office Condo

  Well-located office condo suitable for various professional services.

  706 N Diamond Bar, Diamond Bar, CA 91765

  View Details
• 

  $949,900

  1,510 SF

  Diamond Bar Commercial Office Condo

  Well-located office condo ideal for professional services and investment.

  706 N Diamond Bar, Diamond Bar, CA 91765

  View Details
• 

  $50,000

  1,759 SF

  Turnkey Restaurant Opportunity in Diamond Bar

  Established Vietnamese restaurant for sale in prime Diamond Bar location.

  2777 S Diamond Bar Boulevard, Diamond Bar, CA 91765

  View Details
• 

  $3,579,800

  Diamond Bar Corporate Center Office

  Office spaces for sale in Diamond Bar Corporate Center.

  1470 Valley Vista Dr 206, Diamond Bar, CA 91765

  View Details
• 

  $15,900,000

  54,951 SF

  Move-in Ready Office Building

  55,221 SF office building with easy freeway access.

  1400 Montefino Avenue, Diamond Bar, CA 91765

  View Details
• 

  Contact for pricing

  59,987 SF

  Retail and Medical Office Center

  Mixed-use retail and medical office center with freeway access.

  800-880 N Diamond Bar Blvd, Diamond Bar, CA 91765

  View Details
• 

  $2

  8 SF

  Diamond Bar Commercial Opportunity

  Versatile space suitable for retail, office, or mixed-use purposes.

  560-588 N Diamond Bar Blvd | Diamond Bar, CA 91765, CA 91765

  View Details

FAQs

What type of property is this?

Office building - Class B office building with on-site parking and a reciprocal agreement adding nearby stalls for tenants.

Where is this office building located?

The property is located at 556 N Diamond Bar Blvd Diamond Bar, CA.

What is the asking price?

The asking price for this property is $10,750,000.

What are key features of this property?

This property features: 47,196 SF, three‑story Class B multi‑tenant office building built in 1987; 2.76‑acre site with parking ratio of 4.0 per 1,000 SF plus reciprocal parking agreement; Reciprocal parking with Global Mission Church adds 49 stalls weekdays & Saturdays 6:00 AM–6:30 PM through March 18, 2033