Aurore Baulier earned her architecture degree in Brittany and her masters in sustainable architecture in Gothenburg, Sweden. Back in her native France, she was a member of Louis Vuitton’s in-house architecture firm when Barber & Osgerby lured her to their Universal Design Studio in London. It proved a good move: a decade later, Aurore runs her own RIBA-chartered London practice, Atelier Baulier, specializing in sustainable design (Aurore also happens to be a certified PassivHaus Designer).
One of the firm’s recent projects, a West London house update for a family of four, caught our eye thanks to its well-restored Edwardian façade and back extension with a gleaming sawtoothed roofline. Aurore describes the overhaul as a “low-carbon deep retrofit highlighting the use of natural materials as a new standard.” Think hidden features, such as wood fiber insulation and a heat pump in the garden, as well as generous new living spaces with lime plaster and stained plywood finishes, and a lot of natural light. We’re not the only ones who have taken note: the house has been nominated for ArchDaily’s Building of the Year 2026 and shortlisted for a RIBA London award. Join us for a look around.
Photography by Jim Stephenson, courtesy of Atelier Baulier (@atelier.baulier).
Above: The semidetached, turn-of-the-century structure was in a moldering state when Phoebe and Paul Sprinz bought it (scroll to the end to for a glimpse as it was and some in-progress shots). The family had lived nearby and liked its location and original detailing, but they needed more space and prioritized an eco-minded approach. 
Above: The period front door and glazed tiling were restored and the exterior is now finished with Brouns & Co. linseed oil paint, an age0-old, durable, permeable choice made from flax seed. 
Above: Out back things zig and zag. The multi-story addition houses a new kitchen as well as a lofty, two-bedroom attic for the family’s two teens. The jagged roof lines led the designers to dub the project Twin Pitches.
Aurore writes: “The inverted double-pitch draws inspiration from the geometry of the original outrigger, replicating its 22-degree slope. The new roof shifts upward at a 55-degree angle opposite the existing slope, creating a striking double-peak silhouette.” The extension has a timber frame and is finished with salmon-colored lime render from Lime Green. The tiles that wrap around the base serve as “protective skirting, safeguarding the lime render from water splashes while adding visual richness and tying into the green tiled foot of the front door.”
Above: The front hall, with preserved stair and stained glass, overlooks the extension. 
Above: In addition to running her own firm Aurore Baulier is a leader of the Natural Materials group within the UK’s Architects Climate Action Network, which goes by the acronym Architects CAN!.
