Who Built NW3
The Belsize Park that exists today — its streets of Victorian terrace houses, its mansion flats, its garden squares and crescents — was created in a remarkably short period by a relatively small number of speculative builders who transformed the market gardens and fields of the Belsize estate into one of London's most fashionable middle-class suburbs within a generation. Understanding who these builders were, how they operated, and what drove their decisions is essential to understanding the character of the neighbourhood they created.
The Victorian speculative builder was a distinctive figure in the development of London: not an architect, not a planner, and not an investor in the modern sense, but a practical man of business who took on the risk of developing land by building houses on it and then selling or leasing them. The speculative builder borrowed money to buy materials and pay labour, built houses to designs that he hoped would attract purchasers, and relied on the continuing growth of London's middle-class population to ensure that his product would find buyers before his credit ran out. The system worked, when it worked, because the demand for middle-class housing in a growing city was enormous, and because the building industry had developed the organisational capacity to respond to that demand at remarkable speed.
The Belsize Park development was organised through the leasehold system that governed most Victorian London property development. The Eton College estate, which owned much of the land on which the suburb was built, granted building leases to developers — typically for 99 years — under which the developer was required to build to a specified standard and was then entitled to receive rents from the properties during the lease term. At the end of the lease term, the property reverted to the landowner. This system gave Eton College a mechanism for developing its North London landholding without taking on the risks of building, while ensuring a steady income stream from the rents that accrued as the suburb was built and occupied.
The Building Process
The physical process of building the Victorian suburb of Belsize Park was a complex industrial operation that involved the coordination of multiple trades and materials at a scale that the pre-industrial building industry had never managed. The excavation and laying of foundations, the bricklaying and plastering, the carpentry, the plumbing, the glazing, the painting and decorating — all of these trades had to be coordinated in the correct sequence and supplied with the necessary materials in the correct quantities at the correct times. The management of this operation, in the pre-telephonic era with no mechanised transport, was a significant organisational achievement.
The materials used in the construction of Victorian Belsize Park were drawn from across Britain and beyond. The yellow stock brick that forms the basic structure of most Victorian London buildings was manufactured in the Thames estuary and transported by barge. The Bath stone used for decorative dressings came from Wiltshire by rail. The slates on the roofs came from North Wales. The timber came from Scandinavia. The iron for the structural elements came from the Midlands. The variety of origins reflected the growing integration of the national and international economies of the Victorian period, which made it possible to assemble materials from disparate sources more cheaply than local manufacture could have provided them.
The stucco facades that characterise much of the Belsize Park development were applied to the basic brick structure as a finishing coat, giving the buildings a smooth, continuous surface that could be shaped and moulded to create the Italianate ornamental details that the Victorian market demanded. The stucco was a practical as well as aesthetic choice: it provided a protective coating for the underlying brickwork and could be maintained relatively easily by periodic repainting. Its uniformity of appearance — all stucco could be painted the same colour — gave the streets a visual coherence that exposed brickwork could not have achieved.
The Developers and Their Legacy
The developers who built Belsize Park left their marks on the neighbourhood in ways that are often invisible to the contemporary resident. Street names preserve the memory of landowners and developers: Belsize Park Gardens, Belsize Lane, Belsize Square all reflect the geography of the original estate. The pattern of street widths and plot sizes reflects the decisions that Victorian developers made about the density and scale of development that would be most profitable and most attractive to their target market.
The quality of the Victorian building stock that has survived in Belsize Park reflects the standards that the leasehold system imposed. The requirement to build to specified standards as a condition of the ground lease meant that cost-cutting was constrained by the need to satisfy the freeholder's requirements. The best of the Victorian housing in Belsize Park was built to a genuinely high standard — generous room heights, solid construction, good materials — and has proved capable of accommodating the modifications and improvements of subsequent generations while retaining its essential character.
The Building Boom and Its End
The Victorian building boom in Belsize Park peaked in the 1870s and 1880s, when the demand for middle-class housing in the neighbourhood was at its height and when the building industry had the capacity and the capital to supply that demand. The subsequent slowdown in development — a consequence of the saturation of the immediate market and the opening of new areas of development further from the city centre — left a neighbourhood that was substantially complete but whose edges were still being developed into the Edwardian period.
The transition from Victorian to Edwardian development brought changes in both scale and style. The Edwardian mansion flats that began to appear in the neighbourhood in the early twentieth century represented a new approach to residential development — larger in scale, more urban in character, serving a different demographic of residents who preferred the convenience of flat-based living to the maintenance burden of the Victorian terrace house. The architectural styles of the Edwardian period — Arts and Crafts, Queen Anne Revival, early modernism — were different from the Italianate classicism of the Victorian development, giving the neighbourhood the architectural variety that is one of its distinguishing characteristics today.
*Published in the Hampstead Renovations Heritage Collection — exploring the architecture, history, and stories of London’s most remarkable neighbourhoods.*