Prince Albert Road

Glass walkway to subterranean side extension of prestigious listed London property

A prestigious London property overlooking Regents Park commissioned Alan Higgs Architects to sympathetically extend the footprint of living space with maximum natural light with a semi-subterranean single storey side extension maintaining the garden grounds using a glass walkway to link the new living rooms which include a media room, dance studio and garden room. 

A full glazing package was required including the replacement of the existing traditional windows to main house as well as the new side extension to the Grade II listed London property.

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Shortlisted for the 2017 RIBA Awards


Architect: Alan Higgs Architects




Regents Park, London

The new single storey side extension to this listed London property required an even dispersion of natural light to make it work as a bright and functional space. A bespoke structural glass walkway was created using a frameless silicon bonded Invisio slim strip rooflight over the length of the entire 200 sqm subterranean extension and slim sliding glass doors to create a bright airy space with seamless transitions to the garden. 

Excavation to the new glass walkway subterranean extension and the use of timber louvres to the facade softened the building, helping it to nestle into the garden without imposing on the ancient lime tree to the centre of the garden or the surrounding views.

Excavation allowed for a taller garden room with oversized glazing to this subterranean side extension further enhancing a sense of space. 

It was imperative to the brief that the glass walkway extension would not appear dominant taking away from this listed prestigious property with a rich regal history dating back to the Georgian era.  

The result is a flawless contemporary extension sympathetic to its heritage overcoming the constraints of narrow period properties that don't meet today's modern living needs.  It's no wonder it was shortlisted for a RIBA Award. 


Are you working on an ambitious extension project to a listed building? 

Contact the team today! +44 1494 722 880 



Further reading:  

Glass in listed buildings