Seascape

Auckland

Note: As this project is structurally topped out, the data is based on the most reliable information currently available. This data is thus subject to change until the building has completed and all information can be confirmed and ratified by the CTBUH.

Height 187.2 m / 614 ft
Floors 50
Official Name
The current legal building name.

Seascape

Other Names
Other names the building has commonly been known as, including former names, common informal names, local names, etc.

Customs Residential, 85 Customs Street East

Type
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.

Building

Status
Completed
Architecturally Topped Out
Structurally Topped Out
Under Construction
Proposed
On Hold
Never Completed
Vision
Competition Entry
Canceled
Proposed Renovation
Under Renovation
Renovated
Under Demolition
Demolished

Structurally Topped Out

Expected Completion

2025

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

New Zealand

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

Auckland

Address

85 Customs Street East

Function
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.

Residential

Structural Material
All-Steel
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 an “all-steel” structure as the concrete elements are not acting as the primary structure.

All-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 and/or steel reinforced concrete which has been precast as individual components and assembled together on-site.

All-Timber
Both the main vertical/lateral structural elements and the floor spanning systems are constructed from timber. An all-timber structure may include the use of localized non-timber connections between timber elements. Note that a building of timber construction with a floor system of concrete planks or concrete slab on top of timber beams is still considered an “all-timber” structure as the concrete elements are not acting as the primary structure.

Mixed-Structure
Utilizes distinct systems (e.g. all-steel, all-concrete, all-timber), one on top of the other. For example, a Steel Over Concrete indicates an all-steel structural system located on top of an all-concrete structural system, with the opposite true of Concrete Over Steel.

Composite
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 within a composite building’s primary structural elements.

All-Steel

Height
Architectural
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."

187.2 m / 614 ft

To Tip
Height is measured from the level of the lowest, significant, open-air, pedestrian entrance to the highest point of the building, irrespective of material or function of the highest element (i.e., including antennae, flagpoles, signage and other functional-technical equipment).
187.2 m / 614 ft
Occupied
Height is measured from the level of the lowest, significant, open-air, pedestrian entrance to the highest occupied floor within the building.
168.2 m / 552 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).

50

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

5

# of Apartments
Number of Apartments refers to the total number of residential units (including both rental units and condominiums) contained within a particular building.

221

# 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).

9

Top Elevator Speed
Top Elevator Speed refers to the top speed capable of being achieved by an elevator within a particular building, measured in meters per second.

2.5 m/s

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.

47,000 m² / 505,904 ft²

Structural Material All-Steel
Structural Details:
Columns
Steel
Floor Spanning
Steel Beam
Floor Spanning
Non-Structural Floor Topping
Lateral-Force Resisting
Steel Bracing

Construction Schedule

2015

Proposed

2017

Construction Start

2025

Completed

Structural Engineer
Design

The Design Engineer is usually involved in the front end design, typically taking the leadership role in the Schematic Design and Design Development, and then a monitoring role through the CD and CA phases.
Mott MacDonald Group
MEP Engineer
Design

The Design Engineer is usually involved in the front end design, typically taking the leadership role in the Schematic Design and Design Development, and then a monitoring role through the CD and CA phases.
Mott MacDonald Group
Other Consultant

Other Consultant refers to other organizations which provided significant consultation services for a building project (e.g. wind consultants, environmental consultants, fire and life safety consultants, etc).
Acoustics
Mott MacDonald Group
Building Monitoring
Mott MacDonald Group
Civil
Mott MacDonald Group
Damping
Mott MacDonald Group
Façade

These are firms that consult on the design of a building's façade. May often be referred to as "Cladding," "Envelope," "Exterior Wall," or "Curtain Wall" Consultant, however, for consistency CTBUH uses the term "Façade Consultant" exclusively.
Mott MacDonald Group
Fire
Mott MacDonald Group
Geotechnical
Mott MacDonald Group
Hydraulics
Mott MacDonald Group
Lighting
Mott MacDonald Group
Traffic
Mott MacDonald Group
Vertical Transportation
Mott MacDonald Group
Wind
Mott MacDonald Group
Material Supplier

Material Supplier refers to organizations which supplied significant systems/materials for a building project (e.g. elevator suppliers, facade suppliers, etc).
Elevator
KONE
Owner/Developer
Shundi Customs Limited
Architect
Design

Usually involved in the front end design, with a "typical" condition being that of a leadership role through either Schematic Design or Design Development, and then a monitoring role through the CD and CA phases.
Peddle Thorp Architects
Structural Engineer
Design

The Design Engineer is usually involved in the front end design, typically taking the leadership role in the Schematic Design and Design Development, and then a monitoring role through the CD and CA phases.
Mott MacDonald Group
MEP Engineer
Design

The Design Engineer is usually involved in the front end design, typically taking the leadership role in the Schematic Design and Design Development, and then a monitoring role through the CD and CA phases.
Mott MacDonald Group
Contractor
Main Contractor

The main contractor is the supervisory contractor of all construction work on a project, management of sub-contractors and vendors, etc. May be referred to as "Construction Manager," however, for consistency CTBUH uses the term "Main Contractor" exclusively.
China State Construction Overseas Development Co., Ltd.
Steel
Jinggong Steel Structure Ltd
Special Elements
Nüyün Tek & Grayson Engineering Ltd
Other Consultant

Other Consultant refers to other organizations which provided significant consultation services for a building project (e.g. wind consultants, environmental consultants, fire and life safety consultants, etc).
Acoustics
Mott MacDonald Group
Building Monitoring
Mott MacDonald Group
Civil
Mott MacDonald Group
Damping
Mott MacDonald Group
Façade

These are firms that consult on the design of a building's façade. May often be referred to as "Cladding," "Envelope," "Exterior Wall," or "Curtain Wall" Consultant, however, for consistency CTBUH uses the term "Façade Consultant" exclusively.
Mott MacDonald Group
Fire
Mott MacDonald Group
Geotechnical
Mott MacDonald Group
Hydraulics
Mott MacDonald Group
Lighting
Mott MacDonald Group
Traffic
Mott MacDonald Group
Vertical Transportation
Mott MacDonald Group
Wind
Mott MacDonald Group
Material Supplier

Material Supplier refers to organizations which supplied significant systems/materials for a building project (e.g. elevator suppliers, facade suppliers, etc).
Elevator
KONE

CTBUH Awards & Distinctions

Structure Award 2024 Award of Excellence

2024 CTBUH Awards

 

About Seascape

The structural system of this 50-story residential high-rise adopts a braced mega-frame on the east, west, and south elevations which is positioned outside the main envelope of the building. The slender design tapers to the top in an aesthetic chisel-like shape to protect views and shading, and an innovative integrated damping system uses a collection of 28 viscous dampers in asymmetrical configurations that reduce sway while leading to no loss in floor area.

A 1970s educational building at the University of Auckland gets a second life through the creative design and engineering of reusing the existing structural frame. The retrofit provided a significant carbon saving, utilized an advanced seismic analysis to transform and improve the building’s earthquake rating, provided the space for a new Atrium by strengthening the podium, and opened up a new thoroughfare on the City Campus by linking adjacent streets

CTBUH Awards & Distinctions

Structure Award 2024 Award of Excellence

2024 CTBUH Awards