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Regency Plaza 4643 S Ulster St 3,299 - 87,938 SF of 4-Star Office Space Available in Denver, CO 80237

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HIGHLIGHTS

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

ALL AVAILABLE SPACES(12)

Display Rental Rate as

  • SPACE
  • SIZE
  • TERM
  • RENTAL RATE
  • SPACE USE
  • CONDITION
  • AVAILABLE
  • 2nd Floor, Ste 200
  • 3,299 SF
  • Negotiable
  • Upon Request Upon Request Upon Request Upon Request
  • Office
  • Spec Suite
  • Now

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

  • 5 Private Offices
  • Space is in Excellent Condition
  • 1 Conference Room
  • Kitchen
  • 2nd Floor, Ste 240
  • 4,172 SF
  • Negotiable
  • Upon Request Upon Request Upon Request Upon Request
  • Office
  • Spec Suite
  • Now

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

  • 6 Private Offices
  • Space is in Excellent Condition
  • 1 Conference Room
  • Kitchen
  • 2nd Floor, Ste 250
  • 3,590 SF
  • Negotiable
  • Upon Request Upon Request Upon Request Upon Request
  • Office
  • Spec Suite
  • Now

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

  • 5 Private Offices
  • Space is in Excellent Condition
  • 1 Conference Room
  • Kitchen
  • 3rd Floor, Ste 300
  • 9,073 SF
  • Negotiable
  • Upon Request Upon Request Upon Request Upon Request
  • Office
  • Full Build-Out
  • Now

Thirteen (13) private offices, conference, huddle rooms, kitchen/breakroom, IT/storage, and reception area.

  • Fully Built-Out as Standard Office
  • 1 Conference Room
  • Kitchen
  • 13 Private Offices
  • Space is in Excellent Condition
  • 3rd Floor, Ste 325
  • 3,996 SF
  • Negotiable
  • Upon Request Upon Request Upon Request Upon Request
  • Office
  • Full Build-Out
  • Now

2nd generation space with six (6) private offices, one (1) conference room, reception, kitchen/break, storage, and ample open area for workstations.

  • Fully Built-Out as Standard Office
  • 1 Conference Room
  • Kitchen
  • 6 Private Offices
  • Space is in Excellent Condition
  • 4th Floor, Ste 450
  • 7,712 SF
  • Negotiable
  • Upon Request Upon Request Upon Request Upon Request
  • Office
  • Shell Space
  • Now

White box space with elevator ID, ready for your improvements!

  • 6th Floor, Ste 650
  • 7,655 SF
  • Negotiable
  • Upon Request Upon Request Upon Request Upon Request
  • Office
  • Shell Space
  • Now

Whiteboxed and ready for tenant improvements!

  • 8th Floor, Ste 800
  • 23,839 SF
  • Negotiable
  • Upon Request Upon Request Upon Request Upon Request
  • Office
  • Full Build-Out
  • Now

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.

  • 38 Private Offices
  • 6 Conference Rooms
  • 11th Floor, Ste 1100
  • 6,105 SF
  • Negotiable
  • Upon Request Upon Request Upon Request Upon Request
  • Office
  • Full Build-Out
  • Now

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.

  • 5 Private Offices
  • Can be combined with additional space(s) for up to 11,197 SF of adjacent space
  • 2 Conference Rooms
  • 11th Floor, Ste 1175
  • 5,092 SF
  • Negotiable
  • Upon Request Upon Request Upon Request Upon Request
  • Office
  • Spec Suite
  • Now

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

  • 9 Private Offices
  • Space is in Excellent Condition
  • 1 Conference Room
  • Can be combined with additional space(s) for up to 11,197 SF of adjacent space
  • 14th Floor, Ste 1415
  • 7,593 SF
  • Negotiable
  • Upon Request Upon Request Upon Request Upon Request
  • Office
  • Shell Space
  • Now

Whiteboxed and ready for tenant improvements! Beautiful views of Cherry Creek Reservoir!

  • Office intensive layout
  • Space is in Excellent Condition
  • 14th Floor, Ste 1450
  • 5,812 SF
  • Negotiable
  • Upon Request Upon Request Upon Request Upon Request
  • Office
  • Partial Build-Out
  • 2026-10-01
  • Lease rate does not include utilities, property expenses or building services
  • Space is in Excellent Condition
Space Size Term Rental Rate Space Use Condition Available
2nd Floor, Ste 200 3,299 SF Negotiable Upon Request Upon Request Upon Request Upon Request Office Spec Suite Now
2nd Floor, Ste 240 4,172 SF Negotiable Upon Request Upon Request Upon Request Upon Request Office Spec Suite Now
2nd Floor, Ste 250 3,590 SF Negotiable Upon Request Upon Request Upon Request Upon Request Office Spec Suite Now
3rd Floor, Ste 300 9,073 SF Negotiable Upon Request Upon Request Upon Request Upon Request Office Full Build-Out Now
3rd Floor, Ste 325 3,996 SF Negotiable Upon Request Upon Request Upon Request Upon Request Office Full Build-Out Now
4th Floor, Ste 450 7,712 SF Negotiable Upon Request Upon Request Upon Request Upon Request Office Shell Space Now
6th Floor, Ste 650 7,655 SF Negotiable Upon Request Upon Request Upon Request Upon Request Office Shell Space Now
8th Floor, Ste 800 23,839 SF Negotiable Upon Request Upon Request Upon Request Upon Request Office Full Build-Out Now
11th Floor, Ste 1100 6,105 SF Negotiable Upon Request Upon Request Upon Request Upon Request Office Full Build-Out Now
11th Floor, Ste 1175 5,092 SF Negotiable Upon Request Upon Request Upon Request Upon Request Office Spec Suite Now
14th Floor, Ste 1415 7,593 SF Negotiable Upon Request Upon Request Upon Request Upon Request Office Shell Space Now
14th Floor, Ste 1450 5,812 SF Negotiable Upon Request Upon Request Upon Request Upon Request Office Partial Build-Out 2026-10-01

2nd Floor, Ste 200

Size
3,299 SF
Term
Negotiable
Rental Rate
Upon Request Upon Request Upon Request Upon Request
Space Use
Office
Condition
Spec Suite
Available
Now

2nd Floor, Ste 240

Size
4,172 SF
Term
Negotiable
Rental Rate
Upon Request Upon Request Upon Request Upon Request
Space Use
Office
Condition
Spec Suite
Available
Now

2nd Floor, Ste 250

Size
3,590 SF
Term
Negotiable
Rental Rate
Upon Request Upon Request Upon Request Upon Request
Space Use
Office
Condition
Spec Suite
Available
Now

3rd Floor, Ste 300

Size
9,073 SF
Term
Negotiable
Rental Rate
Upon Request Upon Request Upon Request Upon Request
Space Use
Office
Condition
Full Build-Out
Available
Now

3rd Floor, Ste 325

Size
3,996 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 450

Size
7,712 SF
Term
Negotiable
Rental Rate
Upon Request Upon Request Upon Request Upon Request
Space Use
Office
Condition
Shell Space
Available
Now

6th Floor, Ste 650

Size
7,655 SF
Term
Negotiable
Rental Rate
Upon Request Upon Request Upon Request Upon Request
Space Use
Office
Condition
Shell Space
Available
Now

8th Floor, Ste 800

Size
23,839 SF
Term
Negotiable
Rental Rate
Upon Request Upon Request Upon Request Upon Request
Space Use
Office
Condition
Full Build-Out
Available
Now

11th Floor, Ste 1100

Size
6,105 SF
Term
Negotiable
Rental Rate
Upon Request Upon Request Upon Request Upon Request
Space Use
Office
Condition
Full Build-Out
Available
Now

11th Floor, Ste 1175

Size
5,092 SF
Term
Negotiable
Rental Rate
Upon Request Upon Request Upon Request Upon Request
Space Use
Office
Condition
Spec Suite
Available
Now

14th Floor, Ste 1415

Size
7,593 SF
Term
Negotiable
Rental Rate
Upon Request Upon Request Upon Request Upon Request
Space Use
Office
Condition
Shell Space
Available
Now

14th Floor, Ste 1450

Size
5,812 SF
Term
Negotiable
Rental Rate
Upon Request Upon Request Upon Request Upon Request
Space Use
Office
Condition
Partial Build-Out
Available
2026-10-01

2nd Floor, Ste 200

Size 3,299 SF
Term Negotiable
Rental Rate Upon Request
Space Use Office
Condition Spec Suite
Available Now

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

  • 5 Private Offices
  • 1 Conference Room
  • Space is in Excellent Condition
  • Kitchen

2nd Floor, Ste 240

Size 4,172 SF
Term Negotiable
Rental Rate Upon Request
Space Use Office
Condition Spec Suite
Available Now

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

  • 6 Private Offices
  • 1 Conference Room
  • Space is in Excellent Condition
  • Kitchen

2nd Floor, Ste 250

Size 3,590 SF
Term Negotiable
Rental Rate Upon Request
Space Use Office
Condition Spec Suite
Available Now

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

  • 5 Private Offices
  • 1 Conference Room
  • Space is in Excellent Condition
  • Kitchen

3rd Floor, Ste 300

Size 9,073 SF
Term Negotiable
Rental Rate Upon Request
Space Use Office
Condition Full Build-Out
Available Now

Thirteen (13) private offices, conference, huddle rooms, kitchen/breakroom, IT/storage, and reception area.

  • Fully Built-Out as Standard Office
  • 13 Private Offices
  • 1 Conference Room
  • Space is in Excellent Condition
  • Kitchen

3rd Floor, Ste 325

Size 3,996 SF
Term Negotiable
Rental Rate Upon Request
Space Use Office
Condition Full Build-Out
Available Now

2nd generation space with six (6) private offices, one (1) conference room, reception, kitchen/break, storage, and ample open area for workstations.

  • Fully Built-Out as Standard Office
  • 6 Private Offices
  • 1 Conference Room
  • Space is in Excellent Condition
  • Kitchen

4th Floor, Ste 450

Size 7,712 SF
Term Negotiable
Rental Rate Upon Request
Space Use Office
Condition Shell Space
Available Now

White box space with elevator ID, ready for your improvements!

6th Floor, Ste 650

Size 7,655 SF
Term Negotiable
Rental Rate Upon Request
Space Use Office
Condition Shell Space
Available Now

Whiteboxed and ready for tenant improvements!

8th Floor, Ste 800

Size 23,839 SF
Term Negotiable
Rental Rate Upon Request
Space Use Office
Condition Full Build-Out
Available Now

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.

11th Floor, Ste 1100

Size 6,105 SF
Term Negotiable
Rental Rate Upon Request
Space Use Office
Condition Full Build-Out
Available Now

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.

  • 5 Private Offices
  • 2 Conference Rooms
  • Can be combined with additional space(s) for up to 11,197 SF of adjacent space

11th Floor, Ste 1175

Size 5,092 SF
Term Negotiable
Rental Rate Upon Request
Space Use Office
Condition Spec Suite
Available Now

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

  • 9 Private Offices
  • 1 Conference Room
  • Space is in Excellent Condition
  • Can be combined with additional space(s) for up to 11,197 SF of adjacent space

14th Floor, Ste 1415

Size 7,593 SF
Term Negotiable
Rental Rate Upon Request
Space Use Office
Condition Shell Space
Available Now

Whiteboxed and ready for tenant improvements! Beautiful views of Cherry Creek Reservoir!

  • Office intensive layout
  • Space is in Excellent Condition

14th Floor, Ste 1450

Size 5,812 SF
Term Negotiable
Rental Rate Upon Request
Space Use Office
Condition Partial Build-Out
Available 2026-10-01

  • Lease rate does not include utilities, property expenses or building services
  • Space is in Excellent Condition

PROPERTY OVERVIEW

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.

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

PROPERTY FACTS

Building Type
Office
Year Built/Renovated
1985/2020
LoopNet Rating
4 Star
Building Height
15 Stories
Building Size
328,500 SF
Building Class
A
Typical Floor Size
21,900 SF
Unfinished Ceiling Height
12’
Parking
Covered Parking at $91 CAD/month
Reserved Parking at $147 CAD/month

SUSTAINABILITY

LEED Certified
Silver
LEED certification is a globally recognized symbol of sustainability achievement.
Energy Star Certified
84
ENERGY STAR certified buildings save energy and help protect the environment.

SUSTAINABILITY

LEED Certification Developed by the U.S. Green Building Council (USGBC), the Leadership in Energy and Environmental Design (LEED) is a green building certification program focused on the design, construction, operation, and maintenance of green buildings, homes, and neighborhoods, which aims to help building owners and operators be environmentally responsible and use resources efficiently. LEED certification is a globally recognized symbol of sustainability achievement and leadership. To achieve LEED certification, a project earns points by adhering to prerequisites and credits that address carbon, energy, water, waste, transportation, materials, health and indoor environmental quality. Projects go through a verification and review process and are awarded points that correspond to a level of LEED certification: Platinum (80+ points) Gold (60-79 points) Silver (50-59 points) Certified (40-49 points)

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.

Walk Score®
Very Walkable (71)
What is a Walk Score®, Transit Score® & Bike Score®?
Walk Score® measures the walkability of any address.
Transit Score® measures access to public transit.
Bike Score® measures bikeability of a location.
What is a Walk Score®
, Transit Score® & Bike Score?
Walk Score® measures the walkability
of any address. Transit Score®
measures access to public transit. Bike Score®
measures bikeability of a location.®
  • Listing ID: 17213569

  • Date on Market: 2025-11-18

  • Last Updated:

  • Address: 4643 S Ulster St, Denver, CO 80237

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