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4643 S Ulster St
Denver, CO 80237 Denver Tech Center

Rate Upon Request

Office For Lease  •  3,299+ SF

Property Details

  • Property Type Office
  • Year Built 1985
  • Total Building Size 328,500 SF
  • Tenancy Multiple
  • Building Class A
  • Zoning B8
45 Transit Score
71 Walk Score

12 Spaces Available

Name Space Use Size Rent Details
2nd Floor Ste 200 Office 3,299 SF Rate Upon Request
Recently delivered Spec Suite! Five (5) private offices, reception area, conference room,  kitchen/break, and open area. 
View the virtual tour here: https://my.matterport.com/show/?m=GHDaM9mh6pT

  • Date available: Now
  • Lease term: Negotiable
  • Service type: Negotiable
  • Space Type: Relet
2nd Floor Ste 240 Office 4,172 SF Rate Upon Request
Recently delivered Spec Suite! 
Six (6) offices on the glass, conference, reception area, kitchenette, and open area.
View the virtual tour here https://my.matterport.com/show/?m=t5SPNNShGZH

  • Date available: Now
  • Lease term: Negotiable
  • Service type: Negotiable
  • Space Type: Relet
2nd Floor Ste 250 Office 3,590 SF Rate Upon Request
Recently delivered Spec Suite! 
Five (5) private offices, conference, kitchenette, work room, reception area, and open area.
*Furniture shown for illustrative purposes only.
View the virtual tour here https://my.matterport.com/show/?m=Ahyw7hURaZN

  • Date available: Now
  • Lease term: Negotiable
  • Service type: Negotiable
  • Space Type: Relet
3rd Floor Ste 300 Office 9,073 SF Rate Upon Request
Thirteen (13) private offices, conference, huddle rooms, kitchen/breakroom, IT/storage, and reception area.

  • Date available: Now
  • Lease term: Negotiable
  • Service type: Negotiable
  • Built out as: Standard Office
  • Space Type: Relet
3rd Floor Ste 325 Office 3,996 SF Rate Upon Request
2nd generation space with six (6) private offices, one (1) conference room, reception, kitchen/break, storage, and ample open area for workstations.

  • Date available: Now
  • Lease term: Negotiable
  • Service type: Negotiable
  • Built out as: Standard Office
  • Space Type: Relet
4th Floor Ste 450 Office 7,712 SF Rate Upon Request
White box space with elevator ID, ready for your improvements!

  • Date available: Now
  • Lease term: Negotiable
  • Service type: To Be Determined
  • Space Type: Relet
6th Floor Ste 650 Office 7,655 SF Rate Upon Request
Whiteboxed and ready for tenant improvements!

  • Date available: Now
  • Lease term: Negotiable
  • Service type: To Be Determined
  • Space Type: Relet
8th Floor Ste 800 Office 23,839 SF Rate Upon Request
Office intensive, full floor opportunity! Configured with thirty-eight (38) private offices, six (6) conference rooms, reception, multiple breakrooms with kitchens, large open areas for workstations, IT/server rooms, copy/print areas, and several storage rooms.

  • Date available: Now
  • Lease term: Negotiable
  • Service type: To Be Determined
  • Space Type: Relet
11st Floor Ste 1100 Office 6,105 SF Rate Upon Request
Five (5) offices including large corner executive office, two (2) large conference rooms, one (1) small conference room, reception area, workroom, kitchen/break area, IT/storage, open area for workstations.

  • Date available: Now
  • Lease term: Negotiable
  • Service type: To Be Determined
  • Space Type: Relet
  • In Contiguous block: 11,197 SF
11st Floor Ste 1175 Office 5,092 SF Rate Upon Request
Newly delivered Spec Suite! Six (6) offices on the glass, three (3) interior offices, conference, kitchen/break, open space for workstations.
Take the virtual tour here: https://my.matterport.com/show/?m=K5GX8ErVgmV

  • Date available: Now
  • Lease term: Negotiable
  • Service type: Negotiable
  • Space Type: Relet
  • In Contiguous block: 11,197 SF
14th Floor Ste 1415 Office 7,593 SF Rate Upon Request
Whiteboxed and ready for tenant improvements! Beautiful views of Cherry Creek Reservoir!

  • Date available: Now
  • Lease term: Negotiable
  • Service type: Negotiable
  • Space Type: Relet
14th Floor Ste 1450 Office 5,812 SF Rate Upon Request
Direct elevator exposure! Four (4) meeting spaces or private offices, large conference room, break room, reception, IT/storage, and ample open area for workstations.

  • Date available: Oct 2026
  • Lease term: Negotiable
  • Service type: Triple Net
  • Space Type: Relet

Description

With unrivaled sweeping mountain views, Regency Plaza is the Denver Tech Center's most iconic and dominant trophy office tower.
Come check out the renovated lobby, fitness center with spa-quality showers & locker rooms, dining area with Fooda, building finishes and outdoor courtyard! 100% structured parking with direct building access & two dual EV charging stations. The property is also LEED® Silver Certified.

Highlights

Exceptional views, ample glass and window line
Renovated lobby and health and wellness center
Adjacent to the Hyatt DTC
Telecom
Common conference facility
LEED® Silver Certification

Property Flyers

Green Rating

EnergyStar Yes LEED Silver

Amenities

  • Concierge
  • Conferencing Facility
  • Fitness Center
  • Food Service
  • Property Manager on Site
  • Car Charging Station
  • Outdoor Seating

Public Transportation

Transit/SubwayDriveWalkDistance
Belleview (E Line - Denver Regional Transportation District Light Rail (TheRide), F Line - Denver Regional Transportation District Light Rail (TheRide), G Line - Denver Regional Transportation District Light Rail (TheRide)) 8 min 14 min 0.7 mi
AirportDriveWalkDistance
Denver International 31 min - 25.1 mi

Parking Details

Parking Available: Yes
Reserved: No
Type: Covered
Included in Rent: No
Robert Whittelsey 303-283-4581 Colliers
Robert Whittelsey 303-283-4581 Colliers