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Sunset Plaza Professional Building 556 N Diamond Bar Blvd 47,196 SF 95% Leased Office Building Diamond Bar, CA 91765 $10,750,000 ($227.77/SF) 6.81% Cap Rate



Investment Highlights
- Highly traveled North Diamond Bar Boulevard frontage with ±38,000 vehicles per day.
- Building systems and safety infrastructure have undergone recent capital upgrades.
- Below-Market In-Place Rents with Embedded Mark-to-Market Upside
- The property is currently 95.1% occupied by 31 signed tenants across ±47,196 SF, with no single tenant representing more than 21% of building.
- Strong tenant retention supported by proactive maintenance and property improvements.
- Positioned within one of Southern California’s busiest commercial corridors.
Executive Summary
PLEASE CLICK THE LINK BELOW TO THE LANDING PAGE:
Lee & Associates Pasadena is pleased to present the exclusive opportunity to acquire the Sunset Plaza Professional Building, a ±47,196-square-foot, three-story Class B multi-tenant office building located at 556 N. Diamond Bar Boulevard, Diamond Bar, California. Built in 1988 and consistently well-maintained throughout ownership, the asset is situated on 2.76 acres with a parking ratio of ±4.0 per 1,000 SF. In addition to the on-site count, a reciprocal parking agreement with Global Mission Church, located immediately adjacent to the property, is in-place through March 18, 2033. This agreement provides Sunset Plaza Professional Building occupants access to 49 additional stalls on weekdays and Saturdays from 6:00 AM to 6:30 PM, increasing the effective parking ratio.
The property benefits from prominent frontage along N. Diamond Bar Boulevard, the primary north-south commercial corridor through the City of Diamond Bar. The site is positioned approximately 0.5 miles from the SR-60 / SR-57 Freeway interchange, one of Southern California's highest-volume traffic junctions and a critical commuter route connecting the Inland Empire to Greater Los Angeles. Combined freeway traffic counts at the 60/57 interchange exceed 300,000 vehicles per day (Caltrans, 2024), providing exceptional visibility and accessibility for tenants and their clients.
Lee & Associates Pasadena is pleased to present the exclusive opportunity to acquire the Sunset Plaza Professional Building, a ±47,196-square-foot, three-story Class B multi-tenant office building located at 556 N. Diamond Bar Boulevard, Diamond Bar, California. Built in 1988 and consistently well-maintained throughout ownership, the asset is situated on 2.76 acres with a parking ratio of ±4.0 per 1,000 SF. In addition to the on-site count, a reciprocal parking agreement with Global Mission Church, located immediately adjacent to the property, is in-place through March 18, 2033. This agreement provides Sunset Plaza Professional Building occupants access to 49 additional stalls on weekdays and Saturdays from 6:00 AM to 6:30 PM, increasing the effective parking ratio.
The property benefits from prominent frontage along N. Diamond Bar Boulevard, the primary north-south commercial corridor through the City of Diamond Bar. The site is positioned approximately 0.5 miles from the SR-60 / SR-57 Freeway interchange, one of Southern California's highest-volume traffic junctions and a critical commuter route connecting the Inland Empire to Greater Los Angeles. Combined freeway traffic counts at the 60/57 interchange exceed 300,000 vehicles per day (Caltrans, 2024), providing exceptional visibility and accessibility for tenants and their clients.
Property Facts
Sale Type
Investment
Property Type
Office
Building Size
47,196 SF
Building Class
B
Year Built
1988
Price
$10,750,000
Price Per SF
$227.77
Cap Rate
6.81%
NOI
$732,075
Percent Leased
95%
Tenancy
Multiple
Building Height
3 Stories
Typical Floor Size
15,732 SF
Building FAR
0.39
Lot Size
2.76 AC
Zoning
OP
Amenities
- Property Manager on Site
Space Availability
- Space
- Size
- Space Use
- Build-Out
- Available
- 1st Fl-Ste 106
- 1,214 SF
- Office
- Full Build-Out
- Now
- 2nd Fl-Ste 206
- 274 SF
- Office
- Full Build-Out
- Now
- 3rd Fl-Ste 304-A
- 1,576 SF
- Office
- Full Build-Out
- Now
- 3rd Fl-Ste 308
- 446 SF
- Office
- Full Build-Out
- Now
| Space | Size | Space Use | Build-Out | Available |
| 1st Fl-Ste 106 | 1,214 SF | Office | Full Build-Out | Now |
| 2nd Fl-Ste 206 | 274 SF | Office | Full Build-Out | Now |
| 3rd Fl-Ste 304-A | 1,576 SF | Office | Full Build-Out | Now |
| 3rd Fl-Ste 308 | 446 SF | Office | Full Build-Out | Now |
1st Fl-Ste 106
| Size |
| 1,214 SF |
| Space Use |
| Office |
| Build-Out |
| Full Build-Out |
| Available |
| Now |
2nd Fl-Ste 206
| Size |
| 274 SF |
| Space Use |
| Office |
| Build-Out |
| Full Build-Out |
| Available |
| Now |
3rd Fl-Ste 304-A
| Size |
| 1,576 SF |
| Space Use |
| Office |
| Build-Out |
| Full Build-Out |
| Available |
| Now |
3rd Fl-Ste 308
| Size |
| 446 SF |
| Space Use |
| Office |
| Build-Out |
| Full Build-Out |
| Available |
| Now |
Fairly walkable
40/100
Exceptionally drivable
100/100
Limited public transit
30/100
Somewhat bikeable
30/100
Property Taxes
| Parcel Number | 8706-001-014 | Improvements Assessment | $3,554,487 |
| Land Assessment | $2,132,687 | Total Assessment | $5,687,174 |
Property Taxes
Parcel Number
8706-001-014
Land Assessment
$2,132,687
Improvements Assessment
$3,554,487
Total Assessment
$5,687,174
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