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  4. Cottonwood Lake
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For Lease

5450 Western Avenue

5450 Western Avenue, Boulder, CO 80301

25,432

SF Available

- Building consists of perimeter-lined offices with conference rooms, large open work areas, kitchens, break areas, restrooms with showers – Current layout supports 185 workstations

- 8x8 grade level overhead door with loading and storage area with 11’5 clear height – option to add additional overhead doors as needed

- UVC light air purification systems installed on HVAC; and Liebert cooling system in place for data room

- High-speed internet available including Comcast & Lumen Fiber to the building

- Elevator

- 1,600 Amps, 240 V, 3-phase power

- Local Boulder ownership with responsive management

Rental Details

  • Number of spaces 1
  • Total square feet available 25,432 SF
  • For Lease $9.95/SF/YR
  • Space Types Flex Space
  • Date Updated Jan 27, 2026
Want more info on this listing?

Reach out to the broker for more info on lease terms and amenities

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For Lease 1 Space Available

Office/Flex

  • Space Type Flex Space
  • Lease Rate $9.95/SF/YR
  • Additional Rent $8.69/SF/YR
  • Total Space Available 25,432 SF
  • Attachments jpg opens in new window jpg opens in new window
  • Floor 1 & 2
  • Divisible Space 4,000 - 25,432 SF
  • Available Date Immediate
  • Sublease No
  • Build Type Partial build out

5450 Western Avenue is a rare freestanding office/flex building for lease, offering versatile spaces ideal for professional office use. This unique property combines well-appointed office areas with flexible warehouse space, providing the perfect mix for various business needs. Conveniently located near Arapahoe Ave., employees will enjoy easy access to major thoroughfares and nearby attractions such as the 29th Street Mall and Downtown Boulder. Within a short walking distance, an array of amenities awaits, including renowned dining establishments like Black Belly Restaurant & Market, Ozo Coffee, Pica’s Taqueria, and more. With its strategic location and adaptable layout, this building presents an excellent opportunity for professionals seeking prime office space in a bustling neighborhood.

- Building consists of perimeter lined offices with conference rooms, large open work areas, kitchens, break areas, restrooms with showers – Current layout supports 185 workstations

- 8x8 grade level overhead door with loading and storage area with 11’5 clear height – option to add additional overhead doors as needed

- UVC light air purification systems installed on HVAC; and Liebert cooling system in place for data room

- High-speed internet available including Comcast & Lumen Fiber to the building

- Elevator

- 1,600 Amps, 240 V, 3-phase power

- Local Boulder ownership with responsive management

Contacts

broker
Brit Banks

Dean Callan & Company

Senior Broker Associate

broker
Torrey Patterson

Dean Callan & Company

Broker Associate

Building Details

  • For Lease $9.95/SF/YR
  • Property Type Flex Space
  • Property Size 25,432 SF
  • Lot Size 0.97 Acre
  • Building Class B
  • Year Built 1984
  • Date Updated Jan 27, 2026
  • Clear Height 11'5''
  • Grade Level Doors 1

Attachments

  • 5450-Western-Avenue_Brochure_01-26-2026 (PDF)opens in new window
  • 5450WesternAvenue_FloorPlan_022720231stFloor (JPG)opens in new window
  • 5450WesternAvenue_FloorPlan_030820232ndFloor (JPG)opens in new window

Getting Around

  • Walk Score ®

    Somewhat Walkable (57)
  • Transit Score ®

    Some Transit (35)
  • Bike Score ®

    Very Bikeable (83)
Powered by Walk Score ®

Location

  • City Boulder, CO
  • Neighborhood Cottonwood Lake
  • Zip Code 80301
  • Market Denver
  • Map
  • Street

Points of Interest

ChargePoint

0.52 miles

Boulder JCC

0.90 miles

King Soopers Fuel Center

1.42 miles

Circle K

1.65 miles

Phillips 66

1.86 miles

Kwik Serv

1.87 miles

Valmont Bike Park

1.06 miles

Boulder Junction at Depot Square Park-n-Ride

1.36 miles

Bobolink Trailhead

1.36 miles

Boulder Junction at Depot Square Station

1.37 miles

Lot 535

1.41 miles

Lot 533

1.43 miles

Lot 539

1.44 miles

Lot 513

1.45 miles

Lot 510

1.46 miles

Arapahoe Car Wash

0.44 miles

Budget

0.71 miles

Avis

0.71 miles

The Works Automotive Detail

0.71 miles

Hertz

0.77 miles

Avis / Budget

1.37 miles

eGo Car Share

1.89 miles

Gloss Auto Wash & Cafe

1.90 miles

eGo CarShare

1.92 miles

Wendy's

0.22 miles

Snarf's

0.24 miles

Pica's

0.25 miles

Sherpa Kitchen

0.26 miles

The Deli at Flatiron Park

0.56 miles

SEEC Cafe

0.98 miles

Dry Storage

1.11 miles

The Garden Gate Cafe

1.13 miles

Basta

1.16 miles

Safeway

1.38 miles

Target

1.57 miles

Whole Foods Market

1.62 miles

Trader Joe's

1.66 miles

India Bazaar

1.68 miles

Marshalls

1.75 miles

Natural Grocers

1.81 miles

Sprouts Farmers Market

1.82 miles

India's Grocery

1.88 miles

Boulder Fire / Rescue Department Station 7

0.43 miles

Foothills Hospital

0.56 miles

Boulder Police Department

1.26 miles

King Soopers

1.34 miles

Walgreens

1.38 miles

Safeway

1.41 miles

Concentra Urgent Care

1.41 miles

Kaiser Permanente

1.45 miles

Boulder Fire / Rescue Department Station 3

1.47 miles

5450 Western Avenue Listing Summary

  • What is the asking price at 5450 Western Avenue?

    The asking price for spaces at 5450 Western Avenue rests at $9.95/SF/YR.

  • How many office spaces for rent are listed at 5450 Western Avenue?

    1 office space is listed at 5450 Western Avenue.

  • What is the total size of 5450 Western Avenue?

    5450 Western Avenue has a total of 25,432 square feet.

  • What is the year built for 5450 Western Avenue?

    The year built for 5450 Western Avenue is 1984.

Contact 5450 Western Avenue
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