RICS Level 3 Building Survey in TN15 8

The TN15 8 postcode covers a diverse range of properties across several villages in the Sevenoaks district. From converted oasts and period cottages in Seal and Godden Green to modern executive developments like Water Tower Place in Platt, every property type brings its own set of potential issues. Our Level 3 survey is specifically designed to identify defects that might not be apparent during a visual inspection, giving you a clear picture of what you are buying.

Properties in this area face particular challenges related to the local geology. Kent is highly susceptible to shrink-swell subsidence due to the underlying clay-rich soils that dominate this part of the South East. The Sevenoaks district is rated at 1.75 times the UK average risk for domestic subsidence, meaning properties here are significantly more likely to experience movement related to clay shrinkage than those in many other parts of the country. Our surveyors are trained to identify the signs of subsidence damage, including cracking patterns, movement in window and door frames, and signs of previous repair work that may indicate past structural problems. With climate change projected to increase the frequency of extreme weather events, this risk is likely to become more significant for homeowners in the coming years.

The area also has a documented history of surface water flooding that buyers should be aware of. While the broader TN15 area has very low risk from rivers and groundwater, Borough Green has experienced significant flooding events. In June 2016, the Busty Stream overflowed its banks, causing internal flooding to properties and inundating Borough Green Road. More historically, Basted (within TN15 8) suffered widespread flooding and property damage in September 1968 due to extremely high flows in the watercourse. Properties in lower-lying areas or those with private drainage systems require careful assessment during your survey.

Our Level 3 survey includes evaluation of flood risk and drainage conditions, ensuring you understand the full picture before committing to your purchase. We examine the property's position relative to water courses, the condition of drainage systems, and any evidence of previous flooding that may not be immediately obvious. This assessment is particularly valuable for properties in the valley areas around Borough Green and Basted where surface water runoff can accumulate rapidly during heavy rainfall.

The TN15 8 postcode area has seen significant new development activity in recent years. Water Tower Place in Platt is a notable development by MAC Group (Trilogy Land) offering luxury 4 and 5 bedroom homes with prices ranging from £995,000 to £2,350,000. The development includes converted properties and new-build semi-detached and detached houses, with the distinctive Water Tower conversion offering over 3,800 square feet of luxury living space. Similarly, Oakmere in Crouch is a recently completed 6-bedroom detached house marketed at £1,725,000, spanning over 3,700 square feet and completed in October 2025.

Even new properties benefit from a Level 3 survey. While structural defects are less likely in recently constructed homes, our survey can identify snagging issues, construction defects, and problems with finishes or fittings that may not be apparent to the untrained eye. Many buyers have discovered significant issues in new builds that required correction by the developer. Our detailed report gives you the leverage needed to ensure the builder addresses problems before you move in, whether that involves cosmetic defects like paint finish issues or more serious problems with windows, doors, or mechanical systems.

For new build properties, we can also provide a Snagging Survey specifically focused on identifying cosmetic and minor defects that need addressing by the developer. This is particularly valuable for properties purchased off-plan where you may not have had opportunity to inspect the property thoroughly before completion. Our snagging surveys cover everything from paintwork and fittings to more technical aspects like ventilation systems and thermal efficiency, providing a comprehensive checklist to present to your developer.

Properties across the TN15 8 area showcase the distinctive building traditions of this part of Kent. The area around Borough Green was historically known for its quarries, producing ragstone (a hard limestone) and hassock (a softer limestone) that were used extensively in local construction. Many period properties in villages like Platt and Seal feature these local stones in their walls, which require specific maintenance approaches different from brick or concrete construction. The ragstone was particularly prized for its durability, while the softer hassock was often used for less critical elements.

Clay for brickmaking was also excavated locally, and many properties in the area feature the characteristic red-orange brickwork associated with Kent. Understanding the specific properties of these traditional materials is essential for proper maintenance, and our surveyors are familiar with the common issues that affect them. Stone walls may suffer from frost damage, mortar erosion, or vegetation growth, while brickwork can experience saturation, salt efflorescence, or structural movement. Our survey reports include specific advice on maintenance requirements for these traditional building materials.

The modern housing stock in the area includes executive detached homes, particularly around Borough Green and the new developments in Platt and Crouch. These properties often feature contemporary construction methods including cavity wall insulation, modern roofing systems, and complex drainage arrangements. While generally in good condition, these properties can still present issues with membrane failures, insulation gaps, or design defects that our detailed survey will identify. Our surveyors understand both traditional and modern construction methods, allowing them to assess any property in the TN15 8 area with confidence.

The Sevenoaks district contains 41 designated Conservation Areas, with listed buildings present in nearby villages including Seal, Underriver, and Godden Green. Properties in or near conservation areas may face additional restrictions on alterations and repairs, and our surveyors are familiar with the implications for homeowners. We note any conservation area status in our reports and highlight any Listed Building considerations that may affect your renovation plans.