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Cowper Griffith Architects

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Heath House Project Added to Our Website

July 24, 2025

We’re pleased to announce that our latest retrofit project, Heath House has been added to the website.

Heath House is a grade II listed modernist house located in an area of outstanding natural beauty, overlooking the Deben River Estuary in Suffolk. The distinctive house is perched on a plateau above the land, which slopes down to the estuary to the south, surrounded by large pine and deciduous trees that naturally frame the house when viewed from the footpaths along the north and south banks of the creek below.

We adopted a holistic approach to improve the building's energy consumption. The entire house underwent a low-energy retrofit strategy that included:

- 100mm wood fiber external wall insulation throughout

- Replacement of all single-glazed windows with slim-framed double glazing

- A fully insulated ground floor slab incorporating underfloor heating

- Upgrading all flat roofs to meet current insulation standards

- The introduction of solar panels

Further information can be found on our projects page.

Photography by Peter Cook

Progress in North Norfolk

July 11, 2025

Construction is progressing well on our contemporary new build house in North Norfolk, we are excited to see the project develop through its final stages. The house features a masonry plinth at ground floor and a lightweight timber first floor that houses the living accommodation. Large sliding doors provide panoramic views from the first floor living and kitchen areas.  The building combines traditional materials with modern detailing to create an aesthetic that harmonizes with its surroundings.

 

The building is now weathertight with mechanical and electrical first fixes nearing completion. The work is being carried out to a very high standard by Mode Construction

Ellesmere Yard Appointment

April 28, 2025

CGA is thrilled to announce its appointment to spearhead the conservation and enhancement of Ellesmere Yard in Shropshire, the UK’s only remaining operational canal yard, dating back to 1806 and formerly the office and workshops of the Ellesmere Canal Company, set up by Thomas Telford.

 

It remains a working yard and operational base for the Canal & River Trust, and it houses a variety of small workshops and craftspeople.

 

This Lottery-funded project will preserve a grouping of incredibly special Grade II* heritage assets, encouraging greater public access and engagement and delivering a variety of positive outcomes for the nearby town.

 

We love collaborating with the Canal & River Trust, supporting them in their custodianship of 2000 miles of waterways across England and Wales. We are equally delighted to be working with a carefully selected team of skilled consultants, many of whom assisted with our recent delivery of Calverley Old Hall.

Completion of new house in Hertfordshire

April 22, 2025

We’re delighted to share photos of our recently completed house in Hertfordshire. The large family house is inspired by the Arts and Crafts movement, with crisp brick and stone detailing, handmade tiled roof and bronze casement windows combining beautifully.

Thanks to our contractor, Bridgeman Construction, who have done a fantastic and diligent job transforming our design into reality with great care and attention to detail.

Despite the traditional look, the house is highly energy efficient and has achieved an A rated EPC. It is highly insulated, air tight and utilises a heat recovery ventilation system, ground source heat pump and large solar panel array.

We’re looking forward to seeing the house bed in to its landscape and materials begin to weather in the coming months.

Contemporary New Build House Added to Our Website

February 21, 2025

We’re pleased to announce that our latest contemporary new build house project has been added to the website. Built on the North Norfolk coast, the house can be seen on the rise of a hill that runs parallel with the coastline. Three steeply pitched roof gables and three tall chimney stacks present a distinctive silhouette among the beech trees.

The extensive glazing to the ‘upside down house’ layout allows stunning far-reaching views of the salt marshes and sea towards the north, and elevated views of gentle meadows and woodland to the south. Raised terraces provide outdoor seating and dining whilst enjoying these views.

Further details can be found on the website project page

Built By Grocott & Murfit

Photography by Nick Guttridge

Pavilion transformation submitted for planning

February 12, 2025

We are delighted that our designs to refurbish and extend the former University sports pavilion on the Darwin Green site in Cambridge have now been submitted for planning permission.

 

Our client has great aspirations for the building, which we aim to transform into a “kindercafe” – a café specially designed with children and families in mind.

 

The building is in a very poor way having been left empty since 2006, but we love the challenge of rescuing old buildings, especially those that are loved by the local community.

 

It will be a dramatic transformation to safeguard the building for future generations and a key part of that is long-term sustainability in an uncertain future. To that end, we are aspiring to meet the gold-standard of “Enerphit” energy performance (the Passivhaus standard for retrofit). This will involve substantially increasing insulation, airtightness and providing renewable on-site energy generation to minimise our future energy burden.

The proposal have been featured in local and national press

https://www.cambridge-news.co.uk/news/cambridge-news/vandalised-pavilion-become-caf-cambridge-30907036?int_source=nba

https://www.bbc.co.uk/news/articles/ce8jqljv498o

Planning Success in North Norfolk

January 29, 2025

CGA has recently secured consent to connect, convert and extend three redundant North Norfolk farm buildings, creating a four bedroom family home, preserving the character of the existing structures and introducing contrasting, contemporary additions whilst avoiding harmful impacts on the sensitive, countryside setting.

 

We really enjoy unlocking the potential of these sites, and we look forward to delivering the scheme with our network of local collaborators.

 

We are grateful for the trust of our client, for critical inputs from DWA Ecology of Kings Lynn and Canham Consulting of Norwich, and for collaborative dialogue with North Norfolk District Council Planning Department.

Calverley Old Hall featured in the Guardian

January 9, 2025

We are delighted to see our completed Calverley Old Hall project for The Landmark Trust featured in Monday’s edition of The Guardian and online. See the article here: https://www.theguardian.com/artanddesign/2025/jan/06/tudor-psychedelia-yorkshire-pile-calverley-britains-most-thrilling-holiday-let

Thank you to The Guardian and Oliver Wainwright for featuring our work. We really enjoyed the description of the exciting discoveries and the collaborative approach and many public workshops to achieve the result. We hope the building continues to offer excitement and intrigue to all!

 Thanks to Peter Cook and John Miller for the dramatic photos featured in the article.

Planning Permission Granted In Central Cambridge

December 13, 2024

We’re pleased to announce that we’ve recently been granted approval for substantial alterations and extensions to a house in a Central Cambridge Conservation Area.

The scheme has been designed to ensure the contemporary extension is clearly distinguishable from the existing Arts & Crafts style house whilst also appearing subservient to it, with more contemporary and simplified high quality detailing.

Thermal upgrades will significantly improve the energy performance of the property in the longterm.

Works Nearing Completion in Cambridgeshire

December 9, 2024

Works are nearing completion at our new build house project in Cambridgeshire. The new home replaces an existing house and garage which had occupied the site since the 1960’s.

Our client tasked us to develop a bespoke home of architectural and technical merit, using high quality materials, which responds to its attractive context and to their changing needs.  Low energy use both in construction and use was also a key consideration.

The house sits within a landscaped garden designed by Thomas Hoblyn Garden Design. Works are being undertaken by local contractor Godfrey and Hicks & are due to complete early in the new year.

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