Cape Town
Height 136.4 m / 448 ft
Floors 30
Official Name

The current legal building name.


CTBUH collects data on two major types of tall structures: 'Buildings' and 'Telecommunications / Observation Towers.' A 'Building' is a structure where at least 50% of the height is occupied by usable floor area. A 'Telecommunications / Observation Tower' is a structure where less than 50% of the structure's height is occupied by usable floor area. Only 'Buildings' are eligible for the CTBUH 'Tallest Buildings' lists.

Architecturally Topped Out
Structurally Topped Out
Under Construction
On Hold
Never Completed
Competition Entry
Proposed Renovation
Under Renovation
Under Demolition
Completed, 2014

The CTBUH follows the United Nations's definition of Country, and thus uses the lists and codes established by that organization.


The CTBUH follows the United Nations's definition of City, and thus uses the lists and codes established by that organization.

Postal Code

A single-function tall building is defined as one where 85% or more of its usable floor area is dedicated to a single usage. Thus a building with 90% office floor area would be said to be an "office" building, irrespective of other minor functions it may also contain.

A mixed-use tall building contains two or more functions (or uses), where each of the functions occupy a significant proportion of the tower's total space. Support areas such as car parks and mechanical plant space do not constitute mixed-use functions. Functions are denoted on CTBUH "Tallest Building" lists in descending order, e.g., "hotel/office" indicates hotel function above office function.

Structural Material

Both the main vertical/lateral structural elements and the floor spanning systems are constructed from steel. Note that a building of steel construction with a floor system of concrete planks or concrete slab on top of steel beams is still considered a “steel” structure as the concrete elements are not acting as the primary structure.

Reinforced Concrete
Both the main vertical/lateral structural elements and the floor spanning systems are constructed from concrete which has been cast in place and utilizes steel reinforcement bars.

Precast Concrete
Both the main vertical/lateral structural elements and the floor spanning system are constructed from steel reinforced concrete which has been precast as individual components and assembled together on-site.

Utilizes distinct systems (e.g. steel, concrete, timber), one on top of the other. For example, a steel/concrete indicates a steel structural system located on top of a concrete structural system, with the opposite true of concrete/steel.

A combination of materials (e.g. steel, concrete, timber) are used together in the main structural elements. Examples include buildings which utilize: steel columns with a floor system of reinforced concrete beams; a steel frame system with a concrete core; concrete-encased steel columns; concrete-filled steel tubes; etc. Where known, the CTBUH database breaks out the materials used in a composite building’s core, columns, and floor spanning separately.

5 Star Green Star

Height is measured from the level of the lowest, significant, open-air, pedestrian entrance to the architectural top of the building, including spires, but not including antennae, signage, flag poles or other functional-technical equipment. This measurement is the most widely utilized and is employed to define the Council on Tall Buildings and Urban Habitat (CTBUH) rankings of the "World's Tallest Buildings."

136.4 m / 448 ft
To Tip
136.4 m / 448 ft
105.85 m / 347 ft
105.85 m / 347 ft
Floors Above Ground

The number of floors above ground should include the ground floor level and be the number of main floors above ground, including any significant mezzanine floors and major mechanical plant floors. Mechanical mezzanines should not be included if they have a significantly smaller floor area than the major floors below. Similarly, mechanical penthouses or plant rooms protruding above the general roof area should not be counted. Note: CTBUH floor counts may differ from published accounts, as it is common in some regions of the world for certain floor levels not to be included (e.g., the level 4, 14, 24, etc. in Hong Kong).

Floors Below Ground

The number of floors below ground should include all major floors located below the ground floor level.

# of Parking Spaces

Number of Parking Spaces refers to the total number of car parking spaces contained within a particular building.

# of Elevators

Number of Elevators refers to the total number of elevator cars (not shafts) contained within a particular building (including public, private and freight elevators).

Tower GFA

Tower GFA refers to the total gross floor area within the tower footprint, not including adjoining podiums, connected buildings or other towers within the development.

116,000 m² / 1,248,614 ft²
Construction Schedule



Construction Start



Structural Engineer


Quantity Surveyor


FirstRand Bank; Old Mutual Properties
Eris Property Group; Old Mutual Properties
dhk Architects Pty Ltd; Louis Karol Architects
Structural Engineer
MEP Engineer
Benatar Consulting; BFBA; Claassen Auret International; Spoormaker & Partners, Inc
Matrix Consulting Services
Absolute Project Management; Metrum Project Management; SIP Project Managers
Murray & Roberts


MacKenzie Hoy Consulting Acoustic Engineers


Clive Newsome; WSP Group


Solution Station

Food Service


Life Safety

Ukhuseleko Health & Safety


Ashley Lillie Heritage Specialist

Quantity Surveyor

AECOM; De Leeuw Group


Agama Energy


HHO Africa Infrastructure Engineers

Vertical Transportation

Proji-Tech; WAC Projects


Mazor Group


Brand Engineering



Penta Flooring


Aster International

About Portside

Portside is the first high-rise to ascend in Cape Town for more than two decades, and is now its tallest. The banking headquarters building is becoming a landmark in the emerging financial district of Cape Town, capitalizing on the magnificent panoramas of Table Mountain and the Atlantic Ocean.

The building is about 10 meters shorter than the permitted height, so as to limit visual impact in relation to the larger urban and geographical context of the city and Table Mountain. The architectural quality and material selection were crucial in terms of mediating Portside’s relationship to the public realm. Street level activation, appropriate scale, legibility and permeability were the main vehicles for addressing social context and urban regeneration. The use of LED lighting, storm water recapture, low-embodied-energy materials, and the provision of individually marked, removable and recyclable unitized façade panels earned Portside a 5 Green Star Design rating, the first tall building in South Africa to do so.