A Suburb Built of Two Materials
Walk any of the mid-Victorian streets between Regent's Park Road and Gloucester Avenue and the same formula repeats: a rusticated, cream-painted ground floor; yellow brick above it; painted render picked out around the windows and along the parapet. It reads as one architectural idea, but it is really two materials doing two different jobs, and Camden's conservation area statement is explicit about the division of labour — stucco is applied to masonry surfaces on elevations that are visible from the street.
That single sentence explains most of what you see. The expensive, imitative, high-maintenance material goes where it will be looked at. The cheap, local, structural material does everything else.
Where the Stucco Idiom Came From
The taste arrived from the park edge. John Nash, who laid out Regent's Park between 1809 and 1832, had lost interest in the plain stone elevations of earlier Georgian building and argued instead for stucco — a render that could be lined out and painted to imitate ashlar stonework at a fraction of the cost. Prince Albert Road, on the southern boundary of the Primrose Hill Conservation Area, formed part of Nash's original plan for the park, and the cream-coloured Crown Estate villas along it carry highly decorative stucco to their front elevations. Nash's Park Village East and West, built between 1823 and 1834 just to the east, is generally regarded as the prototype for the Victorian suburb.
What followed in Primrose Hill itself is not Nash's work. The Southampton Estate was sold in freehold portions in 1840 and built up sporadically through the 1840s, 1850s and 1860s by a variety of speculators and builders, in a mixture of ambition and compromise. What they took from the park was the visual language: villas dressed with stucco plasterwork to give the finished appearance of stonework, rusticated at ground level, smooth above with strong horizontal bands and rusticated quoins at the corners.
What London Stock Brick Actually Is
The brick behind the render is the other half of the story. London stock brick is a handmade brick whose distinctive yellow comes from the addition of chalk to the clay. Its other characteristic ingredient is 'Spanish' — ash and cinders from burnt household refuse, mixed into the clay so that the brick partly fires itself and less fuel is needed in the kiln.
It was overwhelmingly a local product. Through the nineteenth century fields were dug for brickearth, the bricks were made on the spot, and the houses were built from them next door; the canals then allowed bulk supply from the Middlesex brickfields further west. Stock brick dominated London building until machine-made Flettons displaced it in the early twentieth century. It also darkened badly: nineteenth- and early twentieth-century air pollution laid a sooty deposit over the whole city, and it was only after the Clean Air Act of 1956 that cleaning older brickwork became worthwhile.
The Standard Primrose Hill Terrace, Front and Back
Camden's description of the typical mid-Victorian terrace in the central part of the conservation area is worth taking literally, because it is a checklist of what the two materials do. Each terrace is built of London stock brick with decorative stucco features to the front elevation, usually painted white or cream, which serves to unify the terrace. Those features are consistent: a rusticated ground floor, projecting window cills and hoods to the ground and first floors, moulded window surrounds, parapets and balustrades, and on many houses a projecting door hood or a porch on columns.
Turn the corner and the discipline drops away. The principal elevation is flat-fronted with paired sashes and the roof hidden behind a horizontal parapet; at the rear the windows are staggered to serve the staircase landings, the roof shows its true butterfly profile, and many houses carry a rear closet wing of half width and part height. The front is a composition; the back is a plan.
Variations on the theme run right across the neighbourhood. On Gloucester Crescent, Henry Bassett's listed Italianate villas at Nos. 3–22 are faced in London yellow stock brick with white painted stucco to window surrounds, porches, cornices and console brackets. St George's Terrace and Chamberlain Street are stock brick with stucco porches, balustrades, quoins and window surrounds. Chalcot Crescent, all of it listed and built by J. Burden, is stucco-fronted with rusticated ground floors, arched porches and first-floor doors to balconies. Around Chalcot Square, the mid-nineteenth-century houses are distinguished by the paint colours on their stucco — mostly muted pastels, which give each house an individual character within a near-symmetrical group.
Why the Distinction Is Protected
Late-Victorian building in the area introduced a third idea: yellow stock brick used with red, brown and glazed bricks in decorative bands, round-arched window heads, parapets and gables, seen on the industrial buildings, on Primrose Hill School in Princess Road and on the Primrose Hill Studios. Here the brick itself became the ornament and the stucco largely disappeared.
All of this now sits inside a conservation area designated on 1 October 1971 and extended on 18 June 1985. On 3 March 1983 an Article 4 Direction withdrew permitted development rights over single-family dwelling houses in the area, precisely because the character depends on details — the line of a parapet, the profile of a moulding, the colour of a painted front — that would otherwise be alterable without consent.