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21671 Gateway Center Dr 706 - 1,645 SF of Office Space Available in Diamond Bar, CA 91765
Highlights
- Prime location in Gateway Center with immediate access to the 57 and 60 freeways.
- On-site property management and 24-hour secured access for tenant convenience.
- Close to Ontario International Airport, Cal Poly Pomona, and major retail centers.
- Suites feature modern finishes, private offices, and abundant natural light.
- Ample surface parking
All Available Spaces(2)
Display Rental Rate as
- Space
- Size
- Term
- Rental Rate
- Space Use
- Build-Out
- Available
Suite 207 is a 939 SF second-floor office at 21671 Gateway Center Drive with the building's most impressive outlook — a freeway-facing window line overlooking the SR-57 / SR-60 corridor, offered on a Modified Gross lease at $2.45/SF/MO. The elevated position brings in abundant natural light and gives clients and staff a commanding view that first-floor space simply can't match — the kind of suite that photographs well and shows even better in person. Central HVAC runs on a dedicated electric meter, so the tenant controls climate around the clock — a real advantage over full-service buildings in the area that shut AC off at 6 PM during hot Diamond Bar summers. The landlord covers water, trash, property taxes, property insurance, CAM, and landscaping; tenant carries liability insurance, electric, and high-speed internet (Spectrum available throughout the building). Building amenities include on-site property management, controlled-access entry, 24/7 secured access, and abundant surface parking. Less than a mile from the SR-57 / SR-60 interchange with quick connections to I-10, I-210, Orange County, and San Bernardino County, Suite 207 suits a professional services firm, medical practice, or regional team that wants a polished Tri-County address with a view to go with it.
- Listed rate may not include certain utilities, building services and property expenses
- Fits 2 - 5 People
- Finished Ceilings: 8’
- Central Air and Heating
- Closed Circuit Television Monitoring (CCTV)
- After Hours HVAC Available
- Ample Parking
- Fully Built-Out as Professional Services Office
- 4 Private Offices
- Space is in Excellent Condition
- Reception Area
- Natural Light
- View
- AC 24/7 - separate electric meter
Suite 211 is a 706 SF second-floor office at 21671 Gateway Center Drive, positioned on the quiet side of the building away from the freeway corridor — offered on a Modified Gross lease at $2.45/SF/MO, which pencils to just $1,729.70 per month. The right-sized footprint and calm setting make it a natural fit for tenants whose work depends on a low-distraction environment: therapists and counselors, attorneys and CPAs, consultants, and any solo practitioner or small team that wants a professional Gateway Center address without paying for space they won't use. Central HVAC runs on the suite's own dedicated electric meter, so the tenant controls heating and cooling around the clock — unlike full-service buildings in the area that shut climate control off at 6 PM during Diamond Bar's 100°+ summer stretches. The landlord covers water, trash, property taxes, property insurance, CAM, and landscaping; tenant carries liability insurance, electric, and high-speed internet (Spectrum available throughout the building). Tenants enjoy on-site property management, controlled-access entry, 24/7 secured access, and ample surface parking for staff and visiting clients. Less than a mile from the SR-57 / SR-60 interchange with fast connections to I-10, I-210, Orange County, and San Bernardino County, Suite 211 delivers a polished Tri-County address at one of the lowest monthly price points in the Gateway Center.
- Listed rate may not include certain utilities, building services and property expenses
- Fits 2 - 5 People
- Finished Ceilings: 8’
- Central Air and Heating
- Natural Light
- Central HVAC meter
- Fully Built-Out as Professional Services Office
- 3 Private Offices
- Space is in Excellent Condition
- Closed Circuit Television Monitoring (CCTV)
- Quiet side of building
- Lease term: 2-5 years
| Space | Size | Term | Rental Rate | Space Use | Build-Out | Available |
| 2nd Floor, Ste 207 | 939 SF | 2-5 Years | $44.68 CAD/SF/YR $3.72 CAD/SF/MO $41,952 CAD/YR $3,496 CAD/MO | Office | Full Build-Out | Now |
| 2nd Floor, Ste 211 | 706 SF | 2-5 Years | $40.54 CAD/SF/YR $3.38 CAD/SF/MO $28,622 CAD/YR $2,385 CAD/MO | Office | Full Build-Out | Now |
2nd Floor, Ste 207
| Size |
| 939 SF |
| Term |
| 2-5 Years |
| Rental Rate |
| $44.68 CAD/SF/YR $3.72 CAD/SF/MO $41,952 CAD/YR $3,496 CAD/MO |
| Space Use |
| Office |
| Build-Out |
| Full Build-Out |
| Available |
| Now |
2nd Floor, Ste 211
| Size |
| 706 SF |
| Term |
| 2-5 Years |
| Rental Rate |
| $40.54 CAD/SF/YR $3.38 CAD/SF/MO $28,622 CAD/YR $2,385 CAD/MO |
| Space Use |
| Office |
| Build-Out |
| Full Build-Out |
| Available |
| Now |
2nd Floor, Ste 207
| Size | 939 SF |
| Term | 2-5 Years |
| Rental Rate | $44.68 CAD/SF/YR |
| Space Use | Office |
| Build-Out | Full Build-Out |
| Available | Now |
Suite 207 is a 939 SF second-floor office at 21671 Gateway Center Drive with the building's most impressive outlook — a freeway-facing window line overlooking the SR-57 / SR-60 corridor, offered on a Modified Gross lease at $2.45/SF/MO. The elevated position brings in abundant natural light and gives clients and staff a commanding view that first-floor space simply can't match — the kind of suite that photographs well and shows even better in person. Central HVAC runs on a dedicated electric meter, so the tenant controls climate around the clock — a real advantage over full-service buildings in the area that shut AC off at 6 PM during hot Diamond Bar summers. The landlord covers water, trash, property taxes, property insurance, CAM, and landscaping; tenant carries liability insurance, electric, and high-speed internet (Spectrum available throughout the building). Building amenities include on-site property management, controlled-access entry, 24/7 secured access, and abundant surface parking. Less than a mile from the SR-57 / SR-60 interchange with quick connections to I-10, I-210, Orange County, and San Bernardino County, Suite 207 suits a professional services firm, medical practice, or regional team that wants a polished Tri-County address with a view to go with it.
- Listed rate may not include certain utilities, building services and property expenses
- Fully Built-Out as Professional Services Office
- Fits 2 - 5 People
- 4 Private Offices
- Finished Ceilings: 8’
- Space is in Excellent Condition
- Central Air and Heating
- Reception Area
- Closed Circuit Television Monitoring (CCTV)
- Natural Light
- After Hours HVAC Available
- View
- Ample Parking
- AC 24/7 - separate electric meter
2nd Floor, Ste 211
| Size | 706 SF |
| Term | 2-5 Years |
| Rental Rate | $40.54 CAD/SF/YR |
| Space Use | Office |
| Build-Out | Full Build-Out |
| Available | Now |
Suite 211 is a 706 SF second-floor office at 21671 Gateway Center Drive, positioned on the quiet side of the building away from the freeway corridor — offered on a Modified Gross lease at $2.45/SF/MO, which pencils to just $1,729.70 per month. The right-sized footprint and calm setting make it a natural fit for tenants whose work depends on a low-distraction environment: therapists and counselors, attorneys and CPAs, consultants, and any solo practitioner or small team that wants a professional Gateway Center address without paying for space they won't use. Central HVAC runs on the suite's own dedicated electric meter, so the tenant controls heating and cooling around the clock — unlike full-service buildings in the area that shut climate control off at 6 PM during Diamond Bar's 100°+ summer stretches. The landlord covers water, trash, property taxes, property insurance, CAM, and landscaping; tenant carries liability insurance, electric, and high-speed internet (Spectrum available throughout the building). Tenants enjoy on-site property management, controlled-access entry, 24/7 secured access, and ample surface parking for staff and visiting clients. Less than a mile from the SR-57 / SR-60 interchange with fast connections to I-10, I-210, Orange County, and San Bernardino County, Suite 211 delivers a polished Tri-County address at one of the lowest monthly price points in the Gateway Center.
- Listed rate may not include certain utilities, building services and property expenses
- Fully Built-Out as Professional Services Office
- Fits 2 - 5 People
- 3 Private Offices
- Finished Ceilings: 8’
- Space is in Excellent Condition
- Central Air and Heating
- Closed Circuit Television Monitoring (CCTV)
- Natural Light
- Quiet side of building
- Central HVAC meter
- Lease term: 2-5 years
Property Overview
21671 Gateway Center Drive is a Class B office building in the heart of Diamond Bar's prestigious Gateway Center business district. Built in 2008 and recently refreshed, the two-story, ~26,000 SF property delivers a polished, professional environment with on-site property management, controlled-access entry, 24-hour secured access, and ample surface parking. Suites are leased on a Modified Gross basis: landlord covers water, trash, property taxes, property insurance, CAM, and landscaping. Each suite has its own dedicated electric meter, so tenants run their HVAC on their own schedule — a meaningful advantage over full-service buildings in the area that shut AC off at 6 PM during Diamond Bar's hot summer months. Tenants carry their own liability insurance and bring in their own high-speed internet, with Spectrum service available throughout the building. The address sits less than a mile from the SR-57 / SR-60 interchange and is minutes from I-10 and I-210, putting Los Angeles, Orange County, and San Bernardino County within easy reach. Ontario International Airport (ONT) is roughly 15 miles east, and tenants are within walking distance of bus service and a short drive from P.F. Chang's, Olive Garden, Chili's, In-N-Out Burger, Holiday Inn, and Ayres Suites. Located in the affluent Walnut Valley submarket — median household income ~$130,000, top-tier schools, and one of Southern California's lowest crime rates — Diamond Bar is a draw for established professionals, growing tech and medical practices, and regional headquarters.
- 24 Hour Access
- Bus Line
- Controlled Access
- Property Manager on Site
- Air Conditioning
Property Facts
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21671 Gateway Center Dr
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