Hallam Street, Marylebone, London, W1W

An attractive self-contained office building on Hallam Street, extending to approximately 5,615 sq ft and currently arranged as high-quality workspace. The property benefits from planning permission for conversion into a substantial single private residence, with proposed accommodation including six bedrooms, seven reception areas, and a rear mansard extension.


This elegant Edwardian townhouse, dating from 1903, occupies a prime position in the heart of Marylebone and offers a rare combination of character and flexibility.

Currently arranged as a self-contained office building extending to approximately 5,615 sq ft, the property provides generous floorplates, good natural light, and a mix of open-plan and private spaces, all enhanced by retained period features.

The building also benefits from planning permission for conversion into a substantial single private residence. The proposed scheme creates an impressive six-bedroom home with seven reception areas, including formal living spaces, a library, study, and expansive kitchen and family accommodation. There is space for the addition of a lift, and a potential rear mansard extension would add approximately 45 sq m of additional space.

This is a unique opportunity to acquire a prime central London building, suitable for immediate office use or transformation into a beautifully designed private home.