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Park Highlights

  • Excellent access to I-10, I-15, and SR-60 freeways for regional connectivity.

Park Facts

Total Space Available 3,655 SF
Park Type Industrial Park

Display Rental Rate as

Milliken Business Center
4375 E Lowell St
1,420 SF | $17.40 /SF/YR $1.45 /SF/MO $187.29 /m²/YR $15.61 /m²/MO $2,059 /MO $24,708 /YR | View Building Details
Building Type
Flex
Building Size
13,995 SF
Lot Size
0.91 AC
Year Built
1986
Construction
Masonry
Clear Height
12’
Drive In Bays
6
Zoning
2591-SP
  • Space
  • Size
  • Term
  • Rental Rate
  • Space Use
  • Build-Out
  • Available
  • 1st Floor, Ste A & B
  • 1,420 SF
  • 2-5 Years
  • $17.40 /SF/YR $1.45 /SF/MO $24,708 /YR $2,059 /MO
  • Office
  • -
  • Now

Office suite with four private offices, one large bullpen area, one kitchenette area, and one restroom.

  • Listed rate may not include certain utilities, building services and property expenses
Space Size Term Rental Rate Space Use Build-Out Available
1st Floor, Ste A & B 1,420 SF 2-5 Years $17.40 /SF/YR $1.45 /SF/MO $24,708 /YR $2,059 /MO Office - Now
Milliken Business Center
4375 E Lowell St
1,420 SF | $17.40 /SF/YR $1.45 /SF/MO $187.29 /m²/YR $15.61 /m²/MO $2,059 /MO $24,708 /YR | View Building Details
Building Type
Flex
Building Size
13,995 SF
Lot Size
0.91 AC
Year Built
1986
Construction
Masonry
Clear Height
12’
Drive In Bays
6
Zoning
2591-SP

4375 E Lowell St - 1st Floor - Ste A & B

Size
1,420 SF
Term
2-5 Years
Rental Rate
$17.40 /SF/YR $1.45 /SF/MO $24,708 /YR $2,059 /MO
Space Use
Office
Build-Out
-
Available
Now
Spaces are matched based on search filters: space use, price, and size
Milliken Business Center
4315 E Lowell St
2,235 SF | $18.96 /SF/YR $1.58 /SF/MO $204.08 /m²/YR $17.01 /m²/MO $3,531 /MO $42,376 /YR | View Building Details
Building Type
Flex
Building Size
15,000 SF
Lot Size
0.98 AC
Year Built
1986
Construction
Masonry
Clear Height
12’
Drive In Bays
7
Zoning
2591-SP
  • Space
  • Size
  • Term
  • Rental Rate
  • Space Use
  • Build-Out
  • Available
  • 1st Floor - A
  • 2,235 SF
  • Negotiable
  • $18.96 /SF/YR $1.58 /SF/MO $42,376 /YR $3,531 /MO
  • Flex
  • -
  • Now

Flex suite with reception area, three private offices, large bullpen, large conference room, 25% warehouse. See attached floor plan. Tour by appointment.

  • Listed rate may not include certain utilities, building services and property expenses
Space Size Term Rental Rate Space Use Build-Out Available
1st Floor - A 2,235 SF Negotiable $18.96 /SF/YR $1.58 /SF/MO $42,376 /YR $3,531 /MO Flex - Now
Milliken Business Center
4315 E Lowell St
2,235 SF | $18.96 /SF/YR $1.58 /SF/MO $204.08 /m²/YR $17.01 /m²/MO $3,531 /MO $42,376 /YR | View Building Details
Building Type
Flex
Building Size
15,000 SF
Lot Size
0.98 AC
Year Built
1986
Construction
Masonry
Clear Height
12’
Drive In Bays
7
Zoning
2591-SP

4315 E Lowell St - 1st Floor - A

Size
2,235 SF
Term
Negotiable
Rental Rate
$18.96 /SF/YR $1.58 /SF/MO $42,376 /YR $3,531 /MO
Space Use
Flex
Build-Out
-
Available
Now
Milliken Business Center
4375 E Lowell St
1,420 SF | $17.40 /SF/YR $1.45 /SF/MO $187.29 /m²/YR $15.61 /m²/MO $2,059 /MO $24,708 /YR | View Building Details
Building Type
Flex
Building Size
13,995 SF
Lot Size
0.91 AC
Year Built
1986
Construction
Masonry
Clear Height
12’
Drive In Bays
6
Zoning
2591-SP
  • Space
  • Size
  • Term
  • Rental Rate
  • Space Use
  • Build-Out
  • Available
  • 1st Floor, Ste A & B
  • 1,420 SF
  • 2-5 Years
  • $17.40 /SF/YR $1.45 /SF/MO $24,708 /YR $2,059 /MO
  • Office
  • -
  • Now

Office suite with four private offices, one large bullpen area, one kitchenette area, and one restroom.

  • Listed rate may not include certain utilities, building services and property expenses
Space Size Term Rental Rate Space Use Build-Out Available
1st Floor, Ste A & B 1,420 SF 2-5 Years $17.40 /SF/YR $1.45 /SF/MO $24,708 /YR $2,059 /MO Office - Now
Milliken Business Center
4375 E Lowell St
1,420 SF | $17.40 /SF/YR $1.45 /SF/MO $187.29 /m²/YR $15.61 /m²/MO $2,059 /MO $24,708 /YR | View Building Details
Building Type
Flex
Building Size
13,995 SF
Lot Size
0.91 AC
Year Built
1986
Construction
Masonry
Clear Height
12’
Drive In Bays
6
Zoning
2591-SP

4375 E Lowell St - 1st Floor - Ste A & B

Size
1,420 SF
Term
2-5 Years
Rental Rate
$17.40 /SF/YR $1.45 /SF/MO $24,708 /YR $2,059 /MO
Space Use
Office
Build-Out
-
Available
Now

4315 E Lowell St - 1st Floor - A

Size 2,235 SF
Term Negotiable
Rental Rate $18.96 /SF/YR
Space Use Flex
Build-Out -
Available Now

Flex suite with reception area, three private offices, large bullpen, large conference room, 25% warehouse. See attached floor plan. Tour by appointment.

  • Listed rate may not include certain utilities, building services and property expenses

4375 E Lowell St - 1st Floor - Ste A & B

Size 1,420 SF
Term 2-5 Years
Rental Rate $17.40 /SF/YR
Space Use Office
Build-Out -
Available Now

Office suite with four private offices, one large bullpen area, one kitchenette area, and one restroom.

  • Listed rate may not include certain utilities, building services and property expenses

Park Overview

Located within the Milliken Business Center in Ontario, California, this property offers highly functional flex industrial space designed to accommodate a variety of business operations. The available suites range from 2,235 to 2,635 square feet and feature a professional layout that includes a reception area, multiple private offices, an open bullpen, and warehouse space. One suite offers approximately 45% warehouse area, while the other includes a large conference room and 25% warehouse, providing flexibility for office and light industrial needs. The property benefits from its strategic location in the Inland Empire West submarket, one of the most dynamic industrial hubs in Southern California. With immediate access to major transportation corridors, including the I-10, I-15, and SR-60 freeways, businesses can efficiently connect to regional and national markets. Ontario International Airport is just minutes away, enhancing logistics and travel convenience. The surrounding area offers a strong mix of amenities, including dining, retail, and business services, making this an ideal location for companies seeking a well-connected and professional environment.

Fairly walkable
40/100
Exceptionally drivable
100/100
Limited public transit
30/100
Somewhat bikeable
30/100
  • Listing ID: 18727291

  • Date on Market: 6/16/2026

  • Last Updated:

  • Address: 4335 E Lowell St, Ontario, CA 91761

Contact the Leasing Agent

Milliken Business Center | Ontario, CA 91761

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