Behind an unassuming Georgian façade in Northampton's Cultural Quarter lies one of the most significant interiors of the twentieth century. 78 Derngate is the only place outside Scotland where visitors can experience Charles Rennie Mackintosh's mature architectural vision in its original setting.
A House Transformed
Built around 1815 by William Mobbs, a local plumber and glazier, the Grade II* listed townhouse at 78 Derngate would remain unremarkable for more than a century. Its transformation began in 1916 when Wenman Joseph Bassett-Lowke, the 39-year-old founder of the model and toy manufacturing company Bassett-Lowke, acquired the property as a wedding gift from his father.
Bassett-Lowke was a man of exacting standards. An early member of the Design and Industries Association, he championed the principle of "fitness for purpose" in all things. When seeking an architect to remodel his new home, he turned to Francis Newbery, headmaster of the Glasgow School of Art, who recommended Charles Rennie Mackintosh.
The first surviving letter between the two men dates from 31 July 1916, in which Bassett-Lowke thanked Mackintosh for his drawings. Over the following months, the Scottish architect designed what would become his final major commission.
Design Before Its Time
Mackintosh's work at 78 Derngate is widely regarded as one of the earliest examples of Art Deco design in Britain. Curator Sylvia Pinches has noted that the designs were "ten years ahead of their time."
The remodelling focused primarily on the hall-lounge and dining room. The hall-lounge became a dramatic black space with yellow-stencilled wallpaper featuring inverted triangles. The guest bedroom was adorned with bold ultramarine, black and white stripes; playwright George Bernard Shaw is known to have stayed there.
Practical modernity accompanied the aesthetic innovation. The house featured central heating, indoor plumbing and numerous electrical gadgets in the kitchen, all advanced amenities for 1916. A rectangular rear extension enlarged the kitchen and the dining room above, with an enclosed balcony for the master bedroom and an open balcony for the guest bedroom. In 1916, these balconies overlooked meadowland stretching to the edge of Northampton.
The Mystery of Authorship
Questions persist about the extent of Mackintosh's personal involvement. He may never have visited Northampton during the initial remodelling; much of the discussion appears to have taken place by correspondence and during Bassett-Lowke's visits to London. Some sources suggest Mackintosh likely visited only a couple of times, probably in connection with the redecoration of the Hall Lounge around 1921–22.
The design origins remain debated. Both Bassett-Lowke himself and architect Alexander Ellis Anderson may have contributed alongside Mackintosh. What is certain is that Mackintosh's surviving drawings relate primarily to the lounge-hall and dining room decoration.
From Family Home to School Classrooms
The Bassett-Lowke family's tenure at 78 Derngate lasted just nine years. In 1926, they moved to "New Ways," a modernist house designed by Peter Behrens on the edge of Northampton. That property is also Grade II* listed.
Between 1964 and 1993, the building served Northampton High School for Girls, first as offices and later as classrooms. The property was sold in the early 1990s, prompting a campaign for its preservation.
The £1.4 Million Rescue
The 78 Derngate Northampton Trust was formed in 1998. Northampton Borough Council acquired a 999-year lease on the property in 1996. In autumn 2001, the Heritage Lottery Fund granted £999,000 towards a total restoration cost of £1.4 million.
Restoration architects John McAslan + Partners and main contractors William Anelay Ltd of York undertook the work, which began in 2002. Specialist contractors recreated wallpapers, paint finishes, curtains and carpets. Professor Jake Kaner produced replicas of the original furniture. The Discovery Channel documented the restoration in a 2003 programme, The House That Mackintosh Built, presented by Eric Knowles.
The house opened to the public in late 2003. On 3 October 2013, Prince Richard, Duke of Gloucester, visited to mark the tenth anniversary.
What the Experts Say
The significance of 78 Derngate has drawn praise from leading figures in art and architecture. Eric Knowles, of BBC Antiques Roadshow fame, described it thus: "An ordinary street in an ordinary town but behind one of these front doors lies one of the most important interiors of the entire twentieth century."
Dan Cruickshank has called it "dazzling." The Telegraph wrote: "To the great museums of the world, there must now be added one other. No 78 Derngate, Northampton… the most delightful museum you will ever see."
Pamela Robertson, Professor Emerita of Mackintosh Studies, has stated: "78 Derngate is of major importance in Mackintosh's career… the most significant piece of design work after leaving Glasgow."
Visiting 78 Derngate
The house is located at 82 Derngate, Northampton, NN1 1UH, and operates as a registered charity (number 1068270). For 2026, it is open from Sunday 1 February to 21 December, Tuesday to Sunday, 10am to 4.30pm, with last entry at 4pm.
Standard admission is £12.00 for adults, £4.00 for children aged 5 to 18, and £25.00 for families. Students pay £5.00; friends of the charity and carers enter free. Group bookings are available at reduced rates.
The complex includes a visitor centre, exhibition space and design shop at number 80, while number 82 houses The Dining Room restaurant and additional galleries. Telephone enquiries can be made on 01604 603407; restaurant bookings are handled separately on 07506 745269.
Northampton's Hidden Jewel
For a town more commonly associated with shoe manufacturing and rugby, 78 Derngate represents an unexpected treasure. It stands as Mackintosh's last extant complete interior design and his only domestic commission outside Scotland. The property offers Northampton residents and visitors alike the rare opportunity to step inside a masterpiece of early British modernism, hidden in plain sight on an ordinary terrace street.