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Empire Towers I 3633 Inland Empire Blvd 1,298 - 9,181 SF of Office Space Available in Ontario, CA 91764
Highlights
- Empire Towers I is a Class A office building within the Ontario Airport submarket.
- Immediate access to Haven Avenue provides convenient regional connectivity.
- Professionally managed and maintained ownership supports daily operations.
- The property offers prominent visibility along Interstate 10.
- The building features a card-key security system for controlled access.
- Convenient access to the I-10, I-15, and SR-60 freeway network.
All Available Spaces(4)
Display Rental Rate as
- Space
- Size
- Term
- Rental Rate
- Space Use
- Build-Out
- Available
Suite 460 features a reception area and an open workspace designed for workstations. The layout provides an efficient configuration for professional office users seeking a combination of client-facing and collaborative work areas.
- Rate includes utilities, building services and property expenses
- Mostly Open Floor Plan Layout
- Reception Area
- Open workstation layout
- Fully Built-Out as Standard Office
- Space is in Excellent Condition
- Reception area included
- Efficient office configuration
Suite 540 includes a reception area, conference room, five private offices, and an open workstation area. The configuration supports a blend of private offices, meetings, and team-oriented workspace.
- Rate includes utilities, building services and property expenses
- 5 Private Offices
- Reception Area
- Dedicated conference room
- Fully Built-Out as Standard Office
- 1 Conference Room
- Five private offices
- Reception and open workspace
Suite 560 contains a reception area, conference room, four private offices, a breakroom, and an open cubicle area. The layout accommodates both individual work functions and collaborative office operations.
- Rate includes utilities, building services and property expenses
- 4 Private Offices
- Finished Ceilings: 10’
- Reception Area
- Smoke Detector
- Breakroom within suite
- Open cubicle workspace
- Fully Built-Out as Standard Office
- 1 Conference Room
- Central Air and Heating
- High Ceilings
- Wheelchair Accessible
- Four private offices
Suite 790 features a reception area, conference room, four private offices, three additional small rooms, and an open workstation area. The floor plan offers a mix of private and flexible workspace components.
- Rate includes utilities, building services and property expenses
- Mostly Open Floor Plan Layout
- Conference Rooms
- Reception Area
- Natural Light
- Smoke Detector
- Four private offices
- Reception and conference area
- Fully Built-Out as Standard Office
- 4 Private Offices
- Central Air and Heating
- Elevator Access
- After Hours HVAC Available
- Wheelchair Accessible
- Three additional rooms
| Space | Size | Term | Rental Rate | Space Use | Build-Out | Available |
| 4th Floor, Ste 460 | 1,298 SF | Negotiable | $34.20 /SF/YR $2.85 /SF/MO $368.13 /m²/YR $30.68 /m²/MO $3,699 /MO $44,392 /YR | Office | Full Build-Out | September 01, 2026 |
| 5th Floor, Ste 540 | 2,252 SF | Negotiable | $34.20 /SF/YR $2.85 /SF/MO $368.13 /m²/YR $30.68 /m²/MO $6,418 /MO $77,018 /YR | Office | Full Build-Out | November 01, 2026 |
| 5th Floor, Ste 560 | 2,441 SF | Negotiable | $34.20 /SF/YR $2.85 /SF/MO $368.13 /m²/YR $30.68 /m²/MO $6,957 /MO $83,482 /YR | Office | Full Build-Out | Now |
| 7th Floor, Ste 790 | 3,190 SF | Negotiable | $34.20 /SF/YR $2.85 /SF/MO $368.13 /m²/YR $30.68 /m²/MO $9,092 /MO $109,098 /YR | Office | Full Build-Out | Now |
4th Floor, Ste 460
| Size |
| 1,298 SF |
| Term |
| Negotiable |
| Rental Rate |
| $34.20 /SF/YR $2.85 /SF/MO $368.13 /m²/YR $30.68 /m²/MO $3,699 /MO $44,392 /YR |
| Space Use |
| Office |
| Build-Out |
| Full Build-Out |
| Available |
| September 01, 2026 |
5th Floor, Ste 540
| Size |
| 2,252 SF |
| Term |
| Negotiable |
| Rental Rate |
| $34.20 /SF/YR $2.85 /SF/MO $368.13 /m²/YR $30.68 /m²/MO $6,418 /MO $77,018 /YR |
| Space Use |
| Office |
| Build-Out |
| Full Build-Out |
| Available |
| November 01, 2026 |
5th Floor, Ste 560
| Size |
| 2,441 SF |
| Term |
| Negotiable |
| Rental Rate |
| $34.20 /SF/YR $2.85 /SF/MO $368.13 /m²/YR $30.68 /m²/MO $6,957 /MO $83,482 /YR |
| Space Use |
| Office |
| Build-Out |
| Full Build-Out |
| Available |
| Now |
7th Floor, Ste 790
| Size |
| 3,190 SF |
| Term |
| Negotiable |
| Rental Rate |
| $34.20 /SF/YR $2.85 /SF/MO $368.13 /m²/YR $30.68 /m²/MO $9,092 /MO $109,098 /YR |
| Space Use |
| Office |
| Build-Out |
| Full Build-Out |
| Available |
| Now |
4th Floor, Ste 460
| Size | 1,298 SF |
| Term | Negotiable |
| Rental Rate | $2.85 /SF/MO |
| Space Use | Office |
| Build-Out | Full Build-Out |
| Available | September 01, 2026 |
Suite 460 features a reception area and an open workspace designed for workstations. The layout provides an efficient configuration for professional office users seeking a combination of client-facing and collaborative work areas.
- Rate includes utilities, building services and property expenses
- Fully Built-Out as Standard Office
- Mostly Open Floor Plan Layout
- Space is in Excellent Condition
- Reception Area
- Reception area included
- Open workstation layout
- Efficient office configuration
5th Floor, Ste 540
| Size | 2,252 SF |
| Term | Negotiable |
| Rental Rate | $2.85 /SF/MO |
| Space Use | Office |
| Build-Out | Full Build-Out |
| Available | November 01, 2026 |
Suite 540 includes a reception area, conference room, five private offices, and an open workstation area. The configuration supports a blend of private offices, meetings, and team-oriented workspace.
- Rate includes utilities, building services and property expenses
- Fully Built-Out as Standard Office
- 5 Private Offices
- 1 Conference Room
- Reception Area
- Five private offices
- Dedicated conference room
- Reception and open workspace
5th Floor, Ste 560
| Size | 2,441 SF |
| Term | Negotiable |
| Rental Rate | $2.85 /SF/MO |
| Space Use | Office |
| Build-Out | Full Build-Out |
| Available | Now |
Suite 560 contains a reception area, conference room, four private offices, a breakroom, and an open cubicle area. The layout accommodates both individual work functions and collaborative office operations.
- Rate includes utilities, building services and property expenses
- Fully Built-Out as Standard Office
- 4 Private Offices
- 1 Conference Room
- Finished Ceilings: 10’
- Central Air and Heating
- Reception Area
- High Ceilings
- Smoke Detector
- Wheelchair Accessible
- Breakroom within suite
- Four private offices
- Open cubicle workspace
7th Floor, Ste 790
| Size | 3,190 SF |
| Term | Negotiable |
| Rental Rate | $2.85 /SF/MO |
| Space Use | Office |
| Build-Out | Full Build-Out |
| Available | Now |
Suite 790 features a reception area, conference room, four private offices, three additional small rooms, and an open workstation area. The floor plan offers a mix of private and flexible workspace components.
- Rate includes utilities, building services and property expenses
- Fully Built-Out as Standard Office
- Mostly Open Floor Plan Layout
- 4 Private Offices
- Conference Rooms
- Central Air and Heating
- Reception Area
- Elevator Access
- Natural Light
- After Hours HVAC Available
- Smoke Detector
- Wheelchair Accessible
- Four private offices
- Three additional rooms
- Reception and conference area
Property Overview
Empire Towers I is a Class A, nine-story office building located at 3633 Inland Empire Boulevard in Ontario, California. The property contains approximately 188,612 square feet and is positioned within the Ontario Airport submarket, offering prominent visibility from Interstate 10. Its location provides immediate access to Haven Avenue and convenient connectivity to the I-10, I-15, and SR-60 transportation corridors, supporting access throughout the Inland Empire and Southern California region. Built in 1991 and professionally managed, the building features a card-key security system, reserved parking options, and a parking ratio of 4 spaces per 1,000 square feet. The property's full-service gross lease structure simplifies occupancy costs, while its central location places tenants near Ontario International Airport, regional business centers, hospitality amenities, dining options, and major transportation infrastructure. Empire Towers I offers a corporate office environment designed to support a wide range of professional users seeking accessibility, visibility, and a well-maintained business setting.
- 24 Hour Access
- Atrium
- Conferencing Facility
- Signage
- Energy Star Labeled
Property Facts
Sustainability
Sustainability
ENERGY STAR® Energy Star is a program run by the U.S. Environmental Protection Agency (EPA) and U.S. Department of Energy (DOE) that promotes energy efficiency and provides simple, credible, and unbiased information that consumers and businesses rely on to make well-informed decisions. Thousands of industrial, commercial, utility, state, and local organizations partner with the EPA to deliver cost-saving energy efficiency solutions that protect the climate while improving air quality and protecting public health. The Energy Star score compares a building’s energy performance to similar buildings nationwide and accounts for differences in operating conditions, regional weather data, and other important considerations. Certification is given on an annual basis, so a building must maintain its high performance to be certified year to year. To be eligible for Energy Star certification, a building must earn a score of 75 or higher on EPA’s 1 – 100 scale, indicating that it performs better than at least 75 percent of similar buildings nationwide. This 1 – 100 Energy Star score is based on the actual, measured energy use of a building and is calculated within EPA’s Energy Star Portfolio Manager tool.
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Empire Towers I | 3633 Inland Empire Blvd
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