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Interlocking Cubes Contemporary Extension in Harborne, Birmingham

A traditional Victorian house on Kingscote Road, Harborne, needed a kitchen extension. Sat within the Calthorpe Estates conservation area, it required the design to be sensitive to its context. The brief called for substantially more usable space at the rear, including room for dining and a dedicated reading area, without compromising the character of the existing house or the wider street.

The Challenge
 

Our Response
 

The design is built around two interlocking cubes: a lower cube that works around the low-level roof of the existing bay window, and a larger block that forms the main extension to the kitchen. 

The Outcome
 

This contemporary composition sits in deliberate contrast to the traditional Victorian rear elevation, creating a substantial new kitchen space along with a dining area and a reading nook featuring its own picture window. A new courtyard and wet room were also created as part of the scheme, and the design received unconditional approval from Calthorpe Estates.

Planning your own home transformation?

Whether you're considering an extension, refurbishment or a complete new build, we'd be happy to discuss your ideas. Give us a call on 0121 212 9615 or send an email to holly@thespacestudio.com

© 2026 the space studio - architects & designers ltd. first floor, the lambourne, 174 great hampton row, birmingham , B19 3JP

t: 0121 212 9615  /   0161 410 9320

e: hello@thespacestudio.com

Registered in England & Wales Company No.: 04530150 

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