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400 Third 400 3rd Ave SW 21,112 - 42,224 SF of 4-Star Office Space Available in Calgary, AB T2P 4H2
SUBLEASE HIGHLIGHTS
- Prime Downtown Location – Connected to Calgary’s +15 network with easy access to transit, dining, and river pathways.
- Sustainable & Prestigious – LEED-certified Class A tower offering a high-profile business address in the city core.
- Modern Amenities – Features a full-service fitness centre, conference facilities, and a stylish tenant lounge.
ALL AVAILABLE SPACES(2)
Display Rental Rate as
- SPACE
- SIZE
- TERM
- RENTAL RATE
- SPACE USE
- CONDITION
- AVAILABLE
Well-appointed leasehold improvements,, fitness facilities with locker rooms and showers and a tenant lounge are just some of the key features available to tenants of the building. With Plus 15 connections to 400 Fourth, Centennial Place and Millennium Tower, in addition to being walking distance to the Bow River pathways, 400 Third offers the complete package for users of first-class office space in downtown Calgary.
- Sublease space available from current tenant
- Mostly Open Floor Plan Layout
- 26 Private Offices
- 25 Workstations
- Central Air and Heating
- Print/Copy Room
- Smoke Detector
- Furniture available
- Fully Built-Out as Standard Office
- Fits 54 - 171 People
- 3 Conference Rooms
- Can be combined with additional space(s) for up to 42,224 SF of adjacent space
- Reception Area
- Natural Light
- Well-appointed improvements
- Tenant lounge
Well-appointed leasehold improvements,, fitness facilities with locker rooms and showers and a tenant lounge are just some of the key features available to tenants of the building. With Plus 15 connections to 400 Fourth, Centennial Place and Millennium Tower, in addition to being walking distance to the Bow River pathways, 400 Third offers the complete package for users of first-class office space in downtown Calgary.
- Sublease space available from current tenant
- Mostly Open Floor Plan Layout
- 24 Private Offices
- 23 Workstations
- Central Air and Heating
- Natural Light
- Well-appointed improvements
- Tenant lounge
- Fully Built-Out as Standard Office
- Fits 53 - 169 People
- 3 Conference Rooms
- Can be combined with additional space(s) for up to 42,224 SF of adjacent space
- Print/Copy Room
- Smoke Detector
- Furniture available
| Space | Size | Term | Rental Rate | Space Use | Condition | Available |
| 18th Floor, Ste 1800 | 21,112 SF | Dec 2026 | Upon Request Upon Request Upon Request Upon Request | Office | Full Build-Out | 30 Days |
| 19th Floor, Ste 1900 | 21,112 SF | Dec 2026 | Upon Request Upon Request Upon Request Upon Request | Office | Full Build-Out | 30 Days |
18th Floor, Ste 1800
| Size |
| 21,112 SF |
| Term |
| Dec 2026 |
| Rental Rate |
| Upon Request Upon Request Upon Request Upon Request |
| Space Use |
| Office |
| Condition |
| Full Build-Out |
| Available |
| 30 Days |
19th Floor, Ste 1900
| Size |
| 21,112 SF |
| Term |
| Dec 2026 |
| Rental Rate |
| Upon Request Upon Request Upon Request Upon Request |
| Space Use |
| Office |
| Condition |
| Full Build-Out |
| Available |
| 30 Days |
18th Floor, Ste 1800
| Size | 21,112 SF |
| Term | Dec 2026 |
| Rental Rate | Upon Request |
| Space Use | Office |
| Condition | Full Build-Out |
| Available | 30 Days |
Well-appointed leasehold improvements,, fitness facilities with locker rooms and showers and a tenant lounge are just some of the key features available to tenants of the building. With Plus 15 connections to 400 Fourth, Centennial Place and Millennium Tower, in addition to being walking distance to the Bow River pathways, 400 Third offers the complete package for users of first-class office space in downtown Calgary.
- Sublease space available from current tenant
- Fully Built-Out as Standard Office
- Mostly Open Floor Plan Layout
- Fits 54 - 171 People
- 26 Private Offices
- 3 Conference Rooms
- 25 Workstations
- Can be combined with additional space(s) for up to 42,224 SF of adjacent space
- Central Air and Heating
- Reception Area
- Print/Copy Room
- Natural Light
- Smoke Detector
- Well-appointed improvements
- Furniture available
- Tenant lounge
19th Floor, Ste 1900
| Size | 21,112 SF |
| Term | Dec 2026 |
| Rental Rate | Upon Request |
| Space Use | Office |
| Condition | Full Build-Out |
| Available | 30 Days |
Well-appointed leasehold improvements,, fitness facilities with locker rooms and showers and a tenant lounge are just some of the key features available to tenants of the building. With Plus 15 connections to 400 Fourth, Centennial Place and Millennium Tower, in addition to being walking distance to the Bow River pathways, 400 Third offers the complete package for users of first-class office space in downtown Calgary.
- Sublease space available from current tenant
- Fully Built-Out as Standard Office
- Mostly Open Floor Plan Layout
- Fits 53 - 169 People
- 24 Private Offices
- 3 Conference Rooms
- 23 Workstations
- Can be combined with additional space(s) for up to 42,224 SF of adjacent space
- Central Air and Heating
- Print/Copy Room
- Natural Light
- Smoke Detector
- Well-appointed improvements
- Furniture available
- Tenant lounge
PROPERTY OVERVIEW
400 Third (400 3rd Ave SW, Calgary, AB T2P 4H2) is a premier Class A office tower in the heart of Calgary’s downtown core. Rising 45 storeys with a striking glass façade, this landmark building offers approximately 820,000 square feet of high-quality office space and is connected to the city’s +15 pedestrian network for convenient access to shops, dining, and transit. Tenants enjoy modern amenities including a full-service fitness centre, conference facilities, and a stylish tenant lounge, all complemented by 24/7 security and concierge services. With LEED certification, exceptional connectivity, and proximity to Eau Claire and river pathways, 400 Third delivers a prestigious, sustainable, and amenity-rich environment for businesses seeking a dynamic urban location.
- Bus Line
- Concierge
- Conferencing Facility
- Food Court
- Signage
- Roof Terrace
- Plus 15
- Air Conditioning
PROPERTY FACTS
SELECT TENANTS
- FLOOR
- TENANT NAME
- INDUSTRY
- Multiple
- ARC Financial
- Finance and Insurance
- Multiple
- Caltex Trilogy
- Utilities
- Multiple
- Cardinal
- Mining, Quarrying, and Oil and Gas Extraction
- Multiple
- Ember
- Mining, Quarrying, and Oil and Gas Extraction
- Multiple
- Heartland Generation
- Utilities
- Multiple
- Integrated Sustainability
- Professional, Scientific, and Technical Services
- Multiple
- Norton Rose Fulbright
- Professional, Scientific, and Technical Services
- 15th
- Storm Development Corp.
- Mining, Quarrying, and Oil and Gas Extraction
- 46th
- TriWest Capital Partners
- Finance and Insurance
- 45th
- Werklund Family Office
- Finance and Insurance
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400 Third | 400 3rd Ave SW
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