Vespers began with a small site, restricted access and an old bungalow that had reached the end of its useful life. Following demolition of the existing bungalow, the site was redeveloped with a contemporary new build home in Cheltenham, creating a spacious five-bedroom property in Charlton Kings with strong architectural character and a clear focus on energy performance.
Working with Cheltenham-based developer SAID Properties, RRA Architects explored the use of Structural Insulated Panels, known as SIP panels, as a practical and efficient construction method for the new house. While SIPs are not new, they are still less commonly used by many developers, despite offering several clear benefits. RRA Architects’ experience with SIPs dates back to 2000, when we delivered a pioneering project believed to be the first SIPs panel constructed house in the UK. So, while Vespers felt contemporary in both design and construction, the thinking behind it was built on long-standing experience rather than a leap into the unknown.
The speed of construction was a major advantage. From damp proof course to completion of the SIP structure took just 23 days. Not bad for a house that looks anything but rushed.
Because SIP panels create such an airtight structure, Vespers uses a mechanical ventilation with heat recovery system. This helps control airflow by extracting stale air and using its heat to warm incoming fresh air, reducing heat loss while keeping the home properly ventilated.
Project Highlights
- Contemporary new build home in Charlton Kings, Cheltenham
- Five-bedroom detached house following demolition of an old bungalow
- Restricted site carefully redeveloped for modern family living
- Built using Structural Insulated Panels, known as SIP panels
- SIP structure completed in just 23 days from damp proof course
- Mechanical ventilation with heat recovery system to support airtight construction
- High-performance Crittall-style glazing
- Double height master bedroom with mezzanine dressing area
- Generous kitchen, dining and family space
- Home office and formal sitting room with garden connections
- Burnt larch cladding to the first floor
- Brick slip cladding at ground floor level to respond to neighbouring buildings
- Covered terrace and strong indoor-outdoor connection
The completed house combines practical performance with strong contemporary design. Crittall-style glazing brings natural light deep into the plan, while double-height spaces create a generous sense of volume. Burnt larch cladding gives the first floor a bold modern finish, with brick slip cladding at ground floor level helping the building sit comfortably alongside its neighbours.
Inside, natural materials, clean detailing and carefully framed views create a calm, spacious family home. A wide entrance hall, practical boot room, generous kitchen, dining and family space, formal sitting room, home office and well-proportioned bedrooms give the house flexibility as well as scale. The master bedroom includes a double height volume with a mezzanine dressing area, adding a distinctive architectural feature within the private suite.
Outside, large areas of glazing, a covered terrace, private gardens and a crisp material palette give Vespers a distinctive identity within its Charlton Kings setting.
This contemporary new build home in Cheltenham demonstrates how a restricted site can be used intelligently to create a light, efficient and beautifully detailed property, with generous family spaces, carefully planned private rooms and strong connections to the garden. It also reflects RRA Architects’ wider residential expertise across Cheltenham, Gloucestershire, Herefordshire, Worcestershire, Shropshire, the Cotswolds, Bristol and Avon, Monmouthshire and South Wales.
The project was the focus of Mandarin Stone’s ‘Inspiration’ case study, ‘Contemporary Cheltenham Home.’
To read more about SIPs and their benefits visit dedicated SIPS specialists Glosford SIPs

















