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Diamond Bar, CA Office Spaces for Lease

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Found 28 office space listings for lease in Diamond Bar, CA, averaging $36/SF/YR. Use lease type data to compare options faster.
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Flexible workspace at CA, Diamond Bar - Gateway Center. Contact us today to book a tour!
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Multi-Suite Office Building
Updated: Oct 12
Multi-Suite Office Building

1360 Valley Vista, Diamond Bar, CA 91765

$1,200/Mo
Available office suite of approximately 301 square feet
20,080‑square‑foot building constructed in 1990
Multiple office suites available for lease
Near the CA‑57 and CA‑60 Freeways
Diamond Bar Town Center and Diamond Hills Plaza are nearby
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Executive Office Suite
Updated: Sep 28
Executive Office Suite

22632 Golden Springs Dr, Diamond Bar, CA 91765

$600/Mo
Available office within a suite featuring three private offices, two open‑area desks, and reception
Third‑floor suite in a three‑story glass building
Water, electricity, WiFi, cleaning, and CAM included
Near the intersection of CA Hwy 57 and CA Hwy 60
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Office Suites with On-Site Parking
Office Suites with On-Site Parking

1360 Valley Vista, Diamond Bar, CA 91765

Contact for pricing
1 space  2,107 sqft  Built 1990
Highway access

Multiple suites are available in a professional office setting with on-site parking.

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Office Suite with Private Offices
Office Suite with Private Offices

680 Brea Canyon Rd 168, Diamond Bar, CA 91789

$5,252/Mo
7–12 people  1,910 sqft  Built 2015
2 private offices  1 meeting room  Highway access

A flexible professional layout combines enclosed work areas with shared workspace and convenient open parking.

Break room  Open parking
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Professional Office Suite
Professional Office Suite

1360 Valley Vista, Diamond Bar, CA 91765

Contact for pricing
1 space  645 sqft  Built 1990
Highway access

A 645-square-foot suite is available within a multi-suite office property with on-site parking.

On-site parking
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Professional Office Suite
Professional Office Suite

1360 Valley Vista, Diamond Bar, CA 91765

Contact for pricing
1 space  1,264 sqft  Built 1990
Highway access

Multiple office suites are available in a multi-tenant building with on-site parking.

On-site parking
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Professional Office Suite
Professional Office Suite

207-1360 Valley Vista, Diamond Bar, CA 91765

$1,200/Mo
1–2 people  301 sqft
Highway access

A small office suite is available within a multi-suite property with on-site parking.

On-site parking
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Professional Office Suite
Professional Office Suite

168-680 Brea Canyon Rd, Diamond Bar, CA 91789

$5,252/Mo
7–12 people  1,910 sqft
2 private offices  1 meeting room  Highway access + Road access

A flexible interior plan combines private rooms, meeting space, shared work area, and a break room.

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Diamond Bar Office Space Available
Diamond Bar Office Space Available

21680 Gateway Center Dr., #230, Diamond Bar, CA 91765

$39 SF/Yr
10–17 people  2,596 sqft  Built 2026

Office spaces for rent in Diamond Bar, ranging 2,370-2,596 SqFt.

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Office Unit with Private Offices
Office Unit with Private Offices

1300 Valley Vista Dr #205A, Diamond Bar, CA 91765

$2,200/Mo
Built 1990
4 private offices  Highway access

Professional suite near the 57 and 60 freeways with a kitchen area and remodeled restrooms.

Lunchroom/kitchen area  Remodeled restrooms with secure code access  Front and rear entrances  Ample parking
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Freeway-Visible Diamond Bar Office Space
Freeway-Visible Diamond Bar Office Space

1360 Valley Vista Dr., Diamond Bar, CA 91765

$900/Mo per office
80–133 people  2 spaces  20,064 sqft  Built 1990

Professional office building with flexible lease terms and various amenities.

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Professional Office Suite
Professional Office Suite

206-1360 Valley Vista Dr, Diamond Bar, CA 91765

Contact for pricing
2–4 people  645 sqft
Highway access

On-site parking and access to CA-57 and CA-60 support convenient regional connections.

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Multi-Suite Office Property
Multi-Suite Office Property

210-1360 Valley Vista, Diamond Bar, CA 91765

Contact for pricing
5–8 people  1,264 sqft
Highway access

On-site parking and access to CA-57 and CA-60 serve the Diamond Bar office building.

On-site parking
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Professional Office Suite
Professional Office Suite

209-1360 Valley Vista, Diamond Bar, CA 91765

Contact for pricing
8–14 people  2,107 sqft
Highway access

Several office suites are available, and the property includes on-site parking.

On-site parking
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Diamond Bar Office Space Sublease
Diamond Bar Office Space Sublease

1081 Grand Ave, Diamond Bar, CA 91765

$26.40 SF/Yr
18–31 people  1 space  4,668 sqft  Built 1987

Office space available for sublease in Diamond Bar, CA.

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Office Unit With Private Offices
Office Unit With Private Offices

205-2707 S Diamond Bar Blvd, Diamond Bar, CA 91765

$2,950/Mo
3 private offices  Highway access

Flexible professional workspace includes reception, break room, restroom, and central heating and cooling.

Central cool and heat  Reception area  Break room  Private restroom
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Office Unit with Private Offices
Office Unit with Private Offices

21015 Pathfinder Rd, Diamond Bar, CA 91789

Full service
Contact for pricing
4–7 people  1 space  1,113 sqft
2 private offices

Office layout combines enclosed rooms with an open work area for day-to-day operations.

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First-Floor Office Suite
First-Floor Office Suite

556 N Diamond Bar Blvd, Diamond Bar, CA 91765

Full service
Contact for pricing
4–8 people  1 space  1,214 sqft  Floor 1

First-floor office space offering approximately 1,214 square feet of working area in a commercial setting.

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Second-Floor Office Suite
Second-Floor Office Suite

556 N Diamond Bar Blvd, Diamond Bar, CA 91765

Contact for pricing
4–8 people  1,225 sqft

Second-floor office space offered for lease.

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Diamond Bar Office Space
Diamond Bar Office Space

732 N Diamond Bar Blvd, Diamond Bar, CA 91765

Modified gross
Contact for pricing
3–5 people  1 space  880 sqft

Office space available for rent in Diamond Bar, California.

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Diamond Bar Commercial Office Space
Diamond Bar Commercial Office Space

3230 Fallow Field Dr, Diamond Bar, CA 91765

Contact for pricing
85–142 people  21,300 sqft  Built 1985

Commercial office space for lease, suitable for various businesses.

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Revitalizing Retail Space
Revitalizing Retail Space

900-990 N Diamond Bar Blvd, Diamond Bar, CA 91765

Contact for pricing
Multi-tenant  1,200–1,355 sqft
Highway access

Retail suites are undergoing center-wide paving, painting, and landscaping improvements.

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First-Floor Office Suite
First-Floor Office Suite

3333 S Diamond Canyon Rd, Diamond Bar, CA 91765

Full service
Contact for pricing
2–3 people  1 space  570 sqft  2-story

First-floor office suite in a two-story building with a perimeter office layout and unit renovations underway.

Signage
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Diamond Bar Office Space Available
Diamond Bar Office Space Available

3333 South Diamond Canyon Road, Diamond Bar, CA 91765

Contact for pricing
68–114 people  17,247 sqft

Available office space in Diamond Bar, California.

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Diamond Bar, CA Office Spaces Lease Rates & Market Statistics

Explore 28 Office Spaces for lease in Diamond Bar, CA on Realmo, a commercial real estate exchange covering the Diamond Bar area. The current inventory totals 105,701 square feet of properties — an average of ~3,800 SF per listing.

Office Spaces lease rates in Diamond Bar range from $26.40 SF/Yr at the entry level to $47.84 SF/Yr at the top of the market, averaging $35.85 SF/Yr. Pricing across the market is relatively uniform, which simplifies like-for-like comparison between listings. At $35.85 SF/Yr, the local average runs 33% above California's state average of $27.05 SF/Yr.

Diamond Bar accounts for 1% of the 2,079 office spaces currently available across Los Angeles County, where nearby markets include Los Angeles and Santa Monica.

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Demographics Overview

Population 86K
Population Growth (5Y) -6.5%
Median Household Income $114,768
College Educated 71.4%

Office Vacancy Rate

Office vacancy in West region stood at 20.8% in 2025, up from 11% in 2019. Figures are for West region, not for Diamond Bar.

Office Space by Type

The largest space type in Diamond Bar, CA is Office Units, with 25 listings.

Office Units 25 Medical Office Space 2 Coworking space 1 Other office properties 1 Serviced offices 1

Available Space by Size

The most common space size in Diamond Bar, CA is 1,000–2,500 SF, with 8 of 19 listings that state a size.

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