Under Construction

Trillium

Trillium is a landmark residential development in Paddington Green in the City of Westminster, moments from Marylebone, Mayfair and Edgware Road station.

Official Website
TMW IntelligenceVerified Oct 3, 2026
AnnouncedBreaking GroundConstructionOpening SoonNow Open
02.25
Start
2028
Completion
556
Units
39
Floors
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Details

2-4 Harrow Road, London. 39 floors and 556 residences. Broke ground February 2025, completing 2028.

The story so far
Announced 2025 est.
Broke ground Feb 2025Berkeley Group broke ground on Trillium, a 556-home Westminster regeneration of the former Paddington Green Police Station site with 50% affordable provision
berkeleygroup.co.uk
Sales launched Mar 2025Sales launched for first tower (The Burton), Manhattan apartments from GBP846k, per Luxury London
luxurylondon.co.uk
Trillium phase one passes 70% sold Aug 2026Berkeley's first phase at the former Paddington Green police station site was reported over 70% sold by August 2026
buildington.co.uk
Under construction
Expected opening 2028
Milestones are dated to when they actually happened and linked to their source. This record fills in over time as TMW tracks the project.
Supply pressure 49 · ElevatedLondon marketMarket →
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About the project

Trillium is a landmark residential development in Paddington Green in the City of Westminster, moments from Marylebone, Mayfair and Edgware Road station. Developed by Berkeley and designed by Squire & Partners, the scheme rises across three towers, its tallest reaching 39 storeys and 166 metres to become the tallest building in Westminster, with an exterior inspired by London's traditional red-brick mansion blocks. Interiors by BradyWilliams favour a calm, neutral palette with natural, earthy textures across Manhattan, one-, two- and three-bedroom apartments and penthouses. Residents enjoy over an acre of landscaped green space plus a swimming pool, hydrotherapy and ice-plunge pools, saunas, a fitness studio, private dining, co-working spaces and 24-hour concierge.

Developer & design
The London market 49 · Elevated supplyPaddington Green 33-project pipeline · 22,103 residences and keys · peak Late ’28 Explore the market →
Common questions

Frequently asked

Where is Trillium located?

Trillium is located in London.

When will Trillium be completed?

Trillium is under construction, with completion expected in 2028.

Who is developing Trillium?

Berkeley is the developer behind Trillium.

Who designed Trillium?

Trillium was designed by Squire & Partners.

How big is Trillium?

Trillium rises 39 stories with 556 residences.