High green
In London’s Silicon roundabout, HYLO melds old and new. An ambitious “cut-and-carve” job – stripping the 16-storey 1960s block back to its concrete skeleton – while adding 13 storeys atop.
📍Location
🏢Building Details
Retrofit + extension of vacant 1960s high-rise, completed 2021
13 new storeys (+70% height) added to original superstructure: total 28 storeys = 258,000 sq. ft. office space + 17,000 sq. ft. retail
2022 RICS Award Winner – Commercial Project of the Year
👷🏾♀️Developer & Contractor
Steve Riddell – Head of Development @ CIT Group Partners LLP
Renford Gordon – Associate Director @ CIT Group Partners LLP
Paul Fairhurst – Operations Director @ Mace
✍️Architects & Engineers
Pedro Joel Costa – Former Senior Associate / Project Manager @ HCL Architects
Chris Connelly – MEP Operations Director @ Mace
Albert Williamson-Taylor – Co-Founder & Director @ AKT II
Michael Hynd – Associate Director @ AKT II
Serena Frisby – Interior Designer @ Stiff + Trevillion Architects
Adam Green – Commercial Director @ Arcadis
Stuart Lawrence – Partner @ RHB Partnership LLP
🌱Sustainability
BREEAM Excellent
100% of existing foundations retained + 60 existing piles + majority of frame = 2,500T of CO2 saved: lettable area doubled, while reducing upfront carbon by 35%
Over a typical 10 year lease, a carbon saving of 25% is estimated compared to leasing a new building
Water consumption meets highest BREEAM standards: rainwater harvesting helps reduce reliance on mains supply by 50%
Exposed thermal mass of concrete soffits instead of suspended ceilings reduces cooling loads + draws heat away naturally; ventilation at night in summer months pre-cools exposed concrete slabs, using less carbon
🥦 Wellbeing
WELL Gold (Platinum Ready) + WiredScore Platinum
Enhanced ventilation system with high grade filters + CO2 sensors = 100% fresh air with no recirculation
11,000 sq. ft. of outdoor terraces created from massing cutbacks + rooftop garden with space for occupants to grow their own veg
Bespoke HYLO building app puts users in total control: desk booking, light + climate settings, concierge services, local amenities + discount offers
Car free: 85 parking spaces replaced with 407 cycle racks, lockers + hotel-quality changing facilities
🎈Bonus feature
The building also includes 25 high-quality, 100% social rent tenure housing units: contributing to meeting the Borough of Islington’s housing targets and local needs.
🔗 Check it out https://hylo-london.com/
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