“Working with PAD landscaes is a breath of fresh air. Their creativity, enthusiasm and attention to detail is second to none. We have found them invaluable during the design process. Their services genuinely add value to our projects and they are a pleasure to work with. ” - Crosstree Real Estate - CLIENT
“The best hotel in London. A verdant landscape with beautifully designed terraces, reclaimed materials and lush green living walls, emphasis the hotel’s dedication to bringing the outdoors inside." - Condé Nast Traveller
2025 RIBA London Awards: shortlist
2024 London Planning Award winner
2024 New London Awards - shortlist
• Europe’s first One Hotel
• An acclaimed sustainable hotel
• 450m2 of new public realm
• Over two thousand plants
• £58m mixed-use for Mayfair
1 Hotel Mayfair: The Metabolic Retrofit
Luxury as a Living System
In the heart of Mayfair - a district defined by stone, heritage, and the high artifice of the Ritz - stands a gentle rebellion to the norm. Europe’s first 1 Hotel Mayfair, together with new office and mixed-commercial space, the project aims beyond a designed public realm and buildings, but as a metabolic retrofit. With this project, PAD landscapes took the mission-driven 1 Hotels brand and asked a singular question: Can the redevelopment of a highly dense brownfield site function as a carbon-sequestering, biodiversity-hosting, living, breathing organism?
The Architectural graft: Retention as Radicalism
Sustainability is often framed as new tech, but here it began with the act of restraint. By retaining 90% of the existing structure and facade, we treated the building as a found object. This conscious decision to avoid the wrecking ball saved embodied carbon, allowing us to focus on grafting a botanical façade (a biophilic skin) onto a mid-century skeleton. Rather than build a hotel; we re-animated a redundant object.
Spatial moves: From Tarmac to Landscape
The project’s most transformative work lies at the ground plane. We reclaimed a busy and inhospitable car park and inverted its purpose into an accessible, public realm ‘sponge’.
The Courtyard Intervention: We dissolved the barrier between public and private. What was once an unsafe cut-through is now a vibrant, publicly accessible garden courtyard. Reclaimed stone in odd sizes creates a moment of sensory deceleration for Mayfair, providing a localised pause effect and a psychological break from the high-decibel hum of London’s traffic surrounding all sides. Underneath the patchwork of old stone, sits a sponge city approach with urban water retention as part of a holistic resilience strategy. Different strata provide a range of purposes: the top layer – filtration, the 2nd layer plugs into the public realm planting via capillary action, followed by a 3rd layer for longer-term year-round water storage.
The Vertical Forest: We created a customised biophilic skin of over 1,000m². The botanical façade is not a green wall product; it is a bespoke designed hydroponic Sud’s vertical garden. This vertical planting turned the old, retained facade into a biological filter, connecting blue roof up top, via the bespoke hydroponic system, This designed system includes layers of recycled denim felt material, grit and plant roots to slow stormwater, filter and clean, before it is finally directed to the water retention system below. Whilst alleviating thermal loading to the hotel façade, the vertical garden acts as a waypoint for pollinators navigating the corridor between Green Park and the city’s richly planter residential squares.
Interior Biophilia: The Raw and the Refined
To continue these principles, the design logic flows from the roof gardens, façade and public realm into the hotel and commercial space’s marrow. We resisted the call for a synthetic luxury in favour of a more primordial materiality.
The London Oak: The reception desk works like a piece of furniture but is a raw segment of a naturally felled oak (Quercus petraea), and a tactile connection to this native species to all who enter the building.
The Green Lung: a large collection of over 4,000 indoor plants were hand selected. The criteria being for filtering harmful Volatile Organic Compounds (VOCs). Species include Chrysanthemum morifolium, Chamaedorea seifrizii and Chlorophytum comosum. Along hallways connecting bedrooms, nighttime oxygenating plants were selected including Aloe barbadensis, and Dracaena trifasciata.
The Biological Chandelier: A finishing touch is hovering above the lobby: a huge living moss installation, for which Tillandsia usneoides was selected. As an atmospheric epiphyte, the species lacks a root system and its entire physiology is fine-tuned to "sample" the surrounding environment, making it a powerful biomonitior for air quality.
Technical Ecology: The Numbers of the Living
Our intervention scales from the street level to the sky, creating a multi-layered ecological stack:
1,000m² of Ecological Roof Gardens: dedicated to local biodiversity, they provide refuge for invertebrates and birdlife in response to the Local Authority's Biodiversity Action Plan target species.
19,000 plants of Botanical Façade: a vertical garden and filtration system.
700m² of Accessible Terraces: Spaces where the human guest becomes a secondary participant in the immersive landscape, surrounded by species selected for their wide floristic range.
450m² of New Public Realm: A ‘gift’ of green space given back to the city, proving that dense urban redevelopment can - and must - enhance the public realm and perform as much as it appears.
The Conclusion: A New Standard of "Prime"
1 Hotel has moved Mayfair beyond the era of the historic manicured garden and represents a shift toward a true performative landscape. We have aimed to demonstrate that the most prestigious real estate in London can be reclaimed for nature, turning a static building into a breathing, growing, and evolving part of the urban fabric.
Client: Cross Tree Real Estate
Status: Completed Q1 2023
Service: Complete from RIBA 1 Feasibility through to RIBA 6, including Concept design, Technical design, Construction scope, Handover, Management and Maintenance.