Journal
Clerkenwell Design Week 2026: Our Top 4 Highlights
A full day at CDW 2026, the festival's 15th edition, across more than 450 brands. Four finds for our project work: a new modular workspace system from Benchmark, acoustic panels from Ecousta, ceramic and oak lighting from Studio Haran, and the Poet's Corner Collection from Spark & Bell.
Eucalyptus House: A Quiet Negotiation Between Past and Future
How a Victorian terrace in a quiet Brixton mews secured planning permission through heritage-led design, neighbour engagement, and a glazed extension built around the eucalyptus tree at the heart of the garden.
Happy Holidays from 4SA
As 2025 draws to a close, a thank you to the clients, consultants and contractors who have made this year possible. Honouring the past, designing for the future, with gratitude for those who walk that road with us.
Presenting the New 4SA Visual Identity
Securing Consent in the Sunnyhill Road Conservation Area: What a previous refusal taught us about getting heritage right from the start
When a previous planning application had been refused, 4SA's conservation expertise found a way forward. The result is a light-filled contemporary kitchen extension that honours the character of a Victorian home without mimicking it.
Clerkenwell Design Week 2025: Our Top 4 Highlights
Every year Clerkenwell Design Week reminds us why material quality and longevity matter. This year four finds stood out: a circular furniture maker, a recycled terrazzo range, a beautifully restrained wall light, and furniture discovered in one of Clerkenwell's most talked-about courtyards.
Piccadilly Club Room
4SA is designing a Club Room within a Grade II listed building on Piccadilly, converting an existing office into a private meeting room and executive workspace. The interior scheme introduces oak-lined partitions set against the retained historic fabric, with a Heritage Statement to follow.
On the Drawing Board—Walnut Tree House
4 Top Tips: How to Budget for a Heritage Home Extension in a London Conservation Area
The total cost of a heritage home extension in London is rarely the construction figure alone. A 4SA architect's guide to contingency, VAT, consultant fees, and the four decisions that keep a Conservation Area project on budget from brief to completion.
From Mayfair Townhouse to Dress Shop to Tired Offices to Repositioned Workspace: Refurbishing a Locally Listed Building on Grosvenor Street
Once a grand Mayfair townhouse, then a dress shop and furrier, then tired post-war offices. Now a heritage-led repositioning by 4SA inside a locally listed building in the Mayfair Conservation Area: retained historic features, new end-of-trip facilities, LG7 lighting and a fire-upgraded envelope.
Curve House in Grand Designs Magazine: Conservation Area Kitchen Extension, Streatham
Grand Designs Magazine has featured Curve House in its September 2024 issue. The piece focuses on the side extension and kitchen-diner of this Victorian semi in the Sunnyhill Road Conservation Area, Streatham, including the curve-edge island, bespoke cherry joinery, and terrazzo-effect flooring.
Tarisio London: a Cat B fit-out for Fine Instruments and Bows
Tarisio's new London flagship for Fine Instruments and Bows is open, with a gallery, acoustically considered rehearsal rooms and a workshop for instrument repair, all within our Grade II listed Ulster Terrace refurbishment overlooking Regent's Park.
Curve House in Actief Wonen: A Mid-Century Modern-Inspired Kitchen Extension, Streatham
Belgian lifestyle magazine Actief Wonen has featured Curve House, our kitchen and terrace extension to a home in the Sunnyhill Conservation Area, Streatham. The piece covers both the architectural moves and the full interior specification, from bespoke cherry joinery to the terrace trellis.
A Substantial Victorian Family Home in Kingston upon Thames: Planning Granted
Planning permission granted for the comprehensive refurbishment and extension of a substantial detached Victorian home in Kingston upon Thames. 4SA appointed for the full RIBA Stages 1 to 7, taking a four bedroom family house to six.
Restoring a Camberwell Grove Façade and adding space: a Conservation Area Negotiation
How 4SA secured planning permission for a Georgian villa in the Camberwell Grove Conservation Area through heritage-led design and archival evidence.
Dwell Magazine shines a spotlight on Curve House in a budget breakdown feature
100 Pall Mall Shortlisted: GAI Architectural Ironmongery Specification Awards 2024, St James's
Our refurbishment of 100 Pall Mall in St James's was shortlisted at the 2024 Architectural Ironmongery Specification Awards, run by the Guild of Architectural Ironmongers with RIBA, with the ceremony held at Grade I listed Southwark Cathedral.
Curve House Longlisted: Don't Move, Improve! Streatham
Curve House, 4SA's contemporary kitchen extension within the Sunnyhill Road Conservation Area in Streatham, has been longlisted for Don't Move, Improve!, New London Architecture's annual programme for London's best domestic-scale design.
100 Pall Mall Shortlisted: AI Specification Awards 2024, Public and Commercial Category
Our refurbishment of 100 Pall Mall in St James's was shortlisted at the 2024 Architectural Ironmongery Specification Awards, run by the Guild of Architectural Ironmongers with RIBA, with the ceremony held at Grade I listed Southwark Cathedral.
