Walking through Brighton and Hove, it is easy to admire the grand symmetry, white stucco façades, and elegant proportions of Regency architecture. These buildings define the character of the seafront and surrounding streets, creating a sense of timeless quality and craftsmanship.
However, behind these refined exteriors lies a far more complex story. From a surveyor’s perspective, Regency buildings are not just beautiful—they are layered, adaptive, and sometimes unpredictable. Understanding how they were constructed is essential if you plan to maintain, repair, or renovate them properly.
The Secret of Bungaroosh
If one material defines Brighton’s architectural identity, it is bungaroosh. This locally unique construction method used a mix of flint, brick fragments, pebbles, and other available materials, all bound together with lime mortar.
While this approach has stood the test of time, it comes with limitations. Bungaroosh is highly sensitive to moisture, and its performance depends heavily on the condition of its protective outer layer.
If water enters the structure, often through defective gutters or cracked render, the lime mortar can weaken or wash out entirely. Over time, this can lead to instability within the wall, making early intervention essential.
Mathematical Tiles: A Clever Illusion
Not everything in Regency architecture is what it appears to be. Many properties that look like solid brick construction are actually finished with mathematical tiles—L-shaped clay tiles fixed to timber battens to replicate the appearance of high-quality brickwork.
This technique was widely used to reduce costs and avoid historic brick taxes while still achieving an elegant finish.
From a surveyor’s perspective, the risk lies behind the surface. Timber battens can decay over time, causing tiles to loosen or “blow”. Repairs require care and specialist knowledge to maintain both the function and the visual integrity of the façade.
The Stucco Façade
The iconic white finish seen across Brighton’s terraces is not stone but stucco—a lime- or oil-based render designed to imitate more expensive materials such as Bath stone. It forms a protective outer layer that shields the underlying structure from the elements.
In coastal environments, this layer is constantly exposed to salt air and driving winds. Over time, it can begin to detach from the wall, a process often identified by a hollow sound when tapped.
When stucco fails, it no longer protects the structure beneath. This allows moisture to penetrate, increasing the risk of internal damp and long-term damage. Regular inspection and maintenance are therefore essential.
The Hidden Service Areas
Regency buildings were designed with a clear social hierarchy, which is still reflected in their layout today. Grand reception rooms occupy the upper floors, while service areas were traditionally located in basements and attic spaces.
These secondary areas often present the greatest challenges. Basement vaults, in particular, are prone to damp due to their original purpose and construction. Many were never intended to be dry environments, yet they are now frequently converted into usable spaces.
Without appropriate waterproofing and ventilation, these areas can suffer from persistent moisture issues that are difficult to resolve.
Preserving the Legacy
Owning a Regency property in Brighton or Hove is not just about ownership—it is about stewardship. These buildings have lasted for over two centuries, but their continued performance depends on informed maintenance and appropriate repair methods.
Understanding the materials and construction techniques used is key. From bungaroosh walls to stucco finishes and timber-framed details, each element requires a considered approach.
The Focus Advice
Before starting any renovation, particularly within a conservation area, it is essential to work with professionals who understand traditional construction.
Modern cement-based repairs can do more harm than good by trapping moisture within breathable structures. Instead, repairs should use compatible materials such as lime, which allow the building to perform as intended.
Taking the right approach protects both the structure and its heritage value, ensuring these iconic buildings continue to define the Sussex coastline for generations to come.