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Investment Highlights

  • Free Ample On-Site Parking
  • Fully Equipped Gym with Locker Rooms
  • 9" High Ceilings
  • Highly Flexible Floor Plans with 108' X 108 Floor Plates
  • 40-Person Meeting Rooms
  • Security System Access

Executive Summary

*****For a full Offering Memorandum, contact Lisa Brandes at 918-978-6155 or lbrandes@legacycpadvisors.com. ****
Rare opportunity to acquire an architecturally significant Midtown Tulsa asset with compelling upside and long-term value potential.
International Plaza is an iconic 12-story, Mid Century Modern multi-tenant office building strategically located in the highly desirable Midtown submarket. Situated on a full city block on Boulder Avenue between 13th Street and 14th Street south of Tulsa's downtown Central Business District. This location offers proximity to downtown while benefiting from lower congestion and strong neighborhood amenities.
The building is a signature glass-clad structure with a strong architectural pedigree, originally developed as the headquarters for Tulsa-based Warren Petroleum Company in 1957 and designed by world-renowned Skidmore, Owings & Merrill architects, reinforcing its long-standing institutional positioning within the Tulsa office market.
Strong local and national office tenant mix with 88% building occupancy.
Physical and Functional Characteristics:
• All-glass façade with floor-to-ceiling windows providing 360° views of downtown Tulsa
• Column-free perimeter design allows for highly efficient floor plates (~108’ x 108’)suitable for both open-plan and traditional office users
• Abundant natural light, spectacular views and efficient layouts for productivity-focused tenants
• Full basement level with support amenities including meeting room, postal boxes, storage, and vending and fitness facilities
• Renovated/convertible 6,400 SF former cafeteria space for office, event center or restaurant use
• Abundant surface and covered parking
• Over $2M in mechanical capital improvements

Property Facts

Sale Type
Investment
Property Type
Office
Building Size
120,765 SF
Building Class
A
LoopNet Rating
4 Star
Year Built/Renovated
1957/2017
Price
$12,323,150 CAD
Price Per SF
$102.04 CAD
Percent Leased
88%
Tenancy
Multiple
Building Height
12 Stories
Typical Floor Size
12,315 SF
Slab To Slab
12’
Building FAR
1.12
Lot Size
2.48 AC
Zoning
CH - Commercial High Density Zoning
Parking
293 Spaces (2.43 Spaces per 1,000 SF Leased)

Amenities

  • 24 Hour Access
  • Controlled Access
  • Conferencing Facility
  • Courtyard
  • Fitness Center
  • Property Manager on Site
  • Security System
  • Signage
  • Storage Space
  • Monument Signage
  • Air Conditioning

Space Availability

  • Space
  • Size
  • Space Use
  • Build-Out
  • Available
  • 1st Fl-Ste Annex
  • 6,400 SF
  • Office
  • Partial Build-Out
  • Now

1st floor office suite located in the Annex portion of International Plaza.

  • 12th Fl-Ste 1200
  • 1,380 SF
  • Office
  • Spec Suite
  • Now

Formerly utilized as classroom. Includes small kitchenette and restroom. Previously used as a training room.

Space Size Space Use Build-Out Available
1st Fl-Ste Annex 6,400 SF Office Partial Build-Out Now
12th Fl-Ste 1200 1,380 SF Office Spec Suite Now

1st Fl-Ste Annex

Size
6,400 SF
Space Use
Office
Build-Out
Partial Build-Out
Available
Now

12th Fl-Ste 1200

Size
1,380 SF
Space Use
Office
Build-Out
Spec Suite
Available
Now

1st Fl-Ste Annex

Size 6,400 SF
Space Use Office
Build-Out Partial Build-Out
Available Now

1st floor office suite located in the Annex portion of International Plaza.

12th Fl-Ste 1200

Size 1,380 SF
Space Use Office
Build-Out Spec Suite
Available Now

Formerly utilized as classroom. Includes small kitchenette and restroom. Previously used as a training room.

Moderately walkable
70/100
Moderately drivable
70/100
Limited public transit
30/100
Moderately bikeable
60/100

Property Taxes

Property Taxes

Parcel Number
19450-92-12-05930
Land Assessment
$129,577 CAD
Improvements Assessment
$1,151,880 CAD
Total Assessment
$1,281,458 CAD
  • Listing ID: 40110191

  • Date on Market: 2026-04-10

  • Last Updated:

  • Address: 1350 S Boulder Ave, Tulsa, OK 74119

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