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Empire Towers V 3990 Concours 943 - 43,596 SF of 4-Star Office Space Available in Ontario, CA 91764

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HIGHLIGHTS

  • Energy Star Labeled
  • EV Charging Stations
  • Professionally Maintained/Pristine Condition
  • Onsite Cafe Amenity
  • Card Key Security System
  • Close Proximity to I-15 and 60 Freeways

ALL AVAILABLE SPACES(5)

Display Rental Rate as

  • SPACE
  • SIZE
  • TERM
  • RENTAL RATE
  • SPACE USE
  • CONDITION
  • AVAILABLE
  • 2nd Floor, Ste 201
  • 3,843 SF
  • Negotiable
  • Upon Request Upon Request Upon Request Upon Request
  • Office
  • Full Build-Out
  • July 01, 2026

This space features reception area, one (1) large conference room, three (3) offices, filing room, IT room, breakroom and two (2) bullpen areas for 11 cubicle workstations.

  • Fully Built-Out as Standard Office
  • 3 Private Offices
  • Central Air and Heating
  • Elevator Access
  • After Hours HVAC Available
  • Smoke Detector
  • Energy Star Labeled
  • Mostly Open Floor Plan Layout
  • Space is in Excellent Condition
  • Reception Area
  • Natural Light
  • Open-Plan
  • Wheelchair Accessible
  • Card Key Security System
  • 2nd Floor, Ste 240
  • 11,317 SF
  • Negotiable
  • $31.80 /SF/YR $2.65 /SF/MO $359,881 /YR $29,990 /MO
  • Office
  • Full Build-Out
  • 60 Days

Excellent office space featuring reception area, 2 large conference rooms, 9 offices and filing room. This space also includes an IT room, breakroom, and 2 separate bullpen areas for workstations.

  • Rate includes utilities, building services and property expenses
  • Mostly Open Floor Plan Layout
  • 2 Conference Rooms
  • Central Air and Heating
  • Wi-Fi Connectivity
  • High Ceilings
  • Smoke Detector
  • Class A Office Building
  • Close Proximity to I-15 and 60 Freeways
  • Premier Ontario Airport Submarket Location
  • Fully Built-Out as Standard Office
  • 9 Private Offices
  • Space is in Excellent Condition
  • Reception Area
  • Private Restrooms
  • After Hours HVAC Available
  • Wheelchair Accessible
  • Card Key Security System
  • Immediate Access to I-10
  • 2nd Floor, Ste 250
  • 5,861 SF
  • Negotiable
  • Upon Request Upon Request Upon Request Upon Request
  • Office
  • Full Build-Out
  • July 01, 2026

This space features reception area, one (1) large conference room, seven (7) offices, storage/IT room, breakroom and bullpen area for 27 workstations.

  • Fully Built-Out as Standard Office
  • Space is in Excellent Condition
  • Reception Area
  • After Hours HVAC Available
  • Smoke Detector
  • Energy Star Labeled
  • Close Proximity to I-15 and 60 Freeways
  • Mostly Open Floor Plan Layout
  • Central Air and Heating
  • Natural Light
  • Open-Plan
  • Wheelchair Accessible
  • Card Key Security System
  • 3rd Floor, Ste 320
  • 943 SF
  • Negotiable
  • Upon Request Upon Request Upon Request Upon Request
  • Office
  • Full Build-Out
  • Now

This space features reception area, two (2) offices and bullpen for workstations.

  • Fully Built-Out as Standard Office
  • 2 Private Offices
  • Central Air and Heating
  • Natural Light
  • Open-Plan
  • Wheelchair Accessible
  • Card Key Security System
  • Mostly Open Floor Plan Layout
  • Space is in Excellent Condition
  • Reception Area
  • After Hours HVAC Available
  • Smoke Detector
  • Energy Star Labeled
  • Close Proximity to I-15 and 60 Freeways
  • 4th Floor, Ste 400
  • 21,632 SF
  • Negotiable
  • Upon Request Upon Request Upon Request Upon Request
  • Office
  • Full Build-Out
  • July 01, 2026

This space features reception area, two (2) large conference rooms, 19 offices, storage/IT rooms, breakroom and large bullpens for workstations.

  • Fully Built-Out as Standard Office
  • 19 Private Offices
  • Central Air and Heating
  • Natural Light
  • Wheelchair Accessible
  • Card Key Security System
  • Mostly Open Floor Plan Layout
  • Space is in Excellent Condition
  • Reception Area
  • After Hours HVAC Available
  • Energy Star Labeled
  • Close Proximity to I-15 and 60 Freeways
Space Size Term Rental Rate Space Use Condition Available
2nd Floor, Ste 201 3,843 SF Negotiable Upon Request Upon Request Upon Request Upon Request Office Full Build-Out July 01, 2026
2nd Floor, Ste 240 11,317 SF Negotiable $31.80 /SF/YR $2.65 /SF/MO $359,881 /YR $29,990 /MO Office Full Build-Out 60 Days
2nd Floor, Ste 250 5,861 SF Negotiable Upon Request Upon Request Upon Request Upon Request Office Full Build-Out July 01, 2026
3rd Floor, Ste 320 943 SF Negotiable Upon Request Upon Request Upon Request Upon Request Office Full Build-Out Now
4th Floor, Ste 400 21,632 SF Negotiable Upon Request Upon Request Upon Request Upon Request Office Full Build-Out July 01, 2026

2nd Floor, Ste 201

Size
3,843 SF
Term
Negotiable
Rental Rate
Upon Request Upon Request Upon Request Upon Request
Space Use
Office
Condition
Full Build-Out
Available
July 01, 2026

2nd Floor, Ste 240

Size
11,317 SF
Term
Negotiable
Rental Rate
$31.80 /SF/YR $2.65 /SF/MO $359,881 /YR $29,990 /MO
Space Use
Office
Condition
Full Build-Out
Available
60 Days

2nd Floor, Ste 250

Size
5,861 SF
Term
Negotiable
Rental Rate
Upon Request Upon Request Upon Request Upon Request
Space Use
Office
Condition
Full Build-Out
Available
July 01, 2026

3rd Floor, Ste 320

Size
943 SF
Term
Negotiable
Rental Rate
Upon Request Upon Request Upon Request Upon Request
Space Use
Office
Condition
Full Build-Out
Available
Now

4th Floor, Ste 400

Size
21,632 SF
Term
Negotiable
Rental Rate
Upon Request Upon Request Upon Request Upon Request
Space Use
Office
Condition
Full Build-Out
Available
July 01, 2026

2nd Floor, Ste 201

Size 3,843 SF
Term Negotiable
Rental Rate Upon Request
Space Use Office
Condition Full Build-Out
Available July 01, 2026

This space features reception area, one (1) large conference room, three (3) offices, filing room, IT room, breakroom and two (2) bullpen areas for 11 cubicle workstations.

  • Fully Built-Out as Standard Office
  • Mostly Open Floor Plan Layout
  • 3 Private Offices
  • Space is in Excellent Condition
  • Central Air and Heating
  • Reception Area
  • Elevator Access
  • Natural Light
  • After Hours HVAC Available
  • Open-Plan
  • Smoke Detector
  • Wheelchair Accessible
  • Energy Star Labeled
  • Card Key Security System

2nd Floor, Ste 240

Size 11,317 SF
Term Negotiable
Rental Rate $31.80 /SF/YR
Space Use Office
Condition Full Build-Out
Available 60 Days

Excellent office space featuring reception area, 2 large conference rooms, 9 offices and filing room. This space also includes an IT room, breakroom, and 2 separate bullpen areas for workstations.

  • Rate includes utilities, building services and property expenses
  • Fully Built-Out as Standard Office
  • Mostly Open Floor Plan Layout
  • 9 Private Offices
  • 2 Conference Rooms
  • Space is in Excellent Condition
  • Central Air and Heating
  • Reception Area
  • Wi-Fi Connectivity
  • Private Restrooms
  • High Ceilings
  • After Hours HVAC Available
  • Smoke Detector
  • Wheelchair Accessible
  • Class A Office Building
  • Card Key Security System
  • Close Proximity to I-15 and 60 Freeways
  • Immediate Access to I-10
  • Premier Ontario Airport Submarket Location

2nd Floor, Ste 250

Size 5,861 SF
Term Negotiable
Rental Rate Upon Request
Space Use Office
Condition Full Build-Out
Available July 01, 2026

This space features reception area, one (1) large conference room, seven (7) offices, storage/IT room, breakroom and bullpen area for 27 workstations.

  • Fully Built-Out as Standard Office
  • Mostly Open Floor Plan Layout
  • Space is in Excellent Condition
  • Central Air and Heating
  • Reception Area
  • Natural Light
  • After Hours HVAC Available
  • Open-Plan
  • Smoke Detector
  • Wheelchair Accessible
  • Energy Star Labeled
  • Card Key Security System
  • Close Proximity to I-15 and 60 Freeways

3rd Floor, Ste 320

Size 943 SF
Term Negotiable
Rental Rate Upon Request
Space Use Office
Condition Full Build-Out
Available Now

This space features reception area, two (2) offices and bullpen for workstations.

  • Fully Built-Out as Standard Office
  • Mostly Open Floor Plan Layout
  • 2 Private Offices
  • Space is in Excellent Condition
  • Central Air and Heating
  • Reception Area
  • Natural Light
  • After Hours HVAC Available
  • Open-Plan
  • Smoke Detector
  • Wheelchair Accessible
  • Energy Star Labeled
  • Card Key Security System
  • Close Proximity to I-15 and 60 Freeways

4th Floor, Ste 400

Size 21,632 SF
Term Negotiable
Rental Rate Upon Request
Space Use Office
Condition Full Build-Out
Available July 01, 2026

This space features reception area, two (2) large conference rooms, 19 offices, storage/IT rooms, breakroom and large bullpens for workstations.

  • Fully Built-Out as Standard Office
  • Mostly Open Floor Plan Layout
  • 19 Private Offices
  • Space is in Excellent Condition
  • Central Air and Heating
  • Reception Area
  • Natural Light
  • After Hours HVAC Available
  • Wheelchair Accessible
  • Energy Star Labeled
  • Card Key Security System
  • Close Proximity to I-15 and 60 Freeways

PROPERTY OVERVIEW

Class A 5-story office building featuring 127,637 SF.

  • 24 Hour Access
  • Energy Star Labeled

PROPERTY FACTS

Building Type
Office
Year Built
2007
LoopNet Rating
4 Star
Building Height
5 Stories
Building Size
128,464 SF
Building Class
A
Typical Floor Size
25,692 SF
Unfinished Ceiling Height
11’
Parking
Surface Parking
Covered Parking
Reserved Parking at $50/month

SUSTAINABILITY

Energy Star Certified
83
ENERGY STAR certified buildings save energy and help protect the environment.

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.

  • Listing ID: 13055823

  • Date on Market: 1/9/2026

  • Last Updated:

  • Address: 3990 Concours, Ontario, CA 91764

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