RICS Level 3 Building Survey Cottenham

Cottenham’s housing stock says a lot about how the village has changed, from a traditional fenland settlement to a busy commuter suburb of Cambridge. You’ll find nineteenth-century cottages with solid brick walls and traditional lime mortar, post-war homes from the 1950s and 1960s built with cavity wall construction, and newer places at developments such as Cottenham Grove and Oakington Gate. Each period brought its own methods, and its own faults, which only an experienced surveyor will know where to look for.

Local ground conditions matter here. Cottenham sits on clay-rich soils, specifically gault clay and alluvial deposits, and that brings a moderate to high shrink-swell risk. In a dry spell the clay contracts and foundations can settle unevenly, then wet weather makes it expand and sometimes lift the structure. The result may be cracking in walls, especially in older houses with shallow foundations or where large trees are drawing moisture from the ground nearby.

The Fens are flat, which gives the area the open rural feel many buyers want, but it also means drainage is always part of the picture. Heavy rainfall can bring surface water flooding, and homes close to the network of drainage ditches and lodes that run through the area face extra pressure. Our inspectors look at the current condition of the property, then check for signs of earlier flood damage or anything that suggests a building could be vulnerable to these conditions.

There is a practical side to living in Cottenham too, because the village sits within easy reach of Cambridge’s main employment centres. Plenty of buyers work at the Cambridge Science Park, the Biomedical Campus, or the city’s university and hospital complex. They often want the larger family homes Cottenham offers, but may know less about the structural quirks that fenland properties can bring. Our surveys are there to bridge that gap.

• Victorian and Edwardian cottages on the High Street
• 1960s and 1970s semi-detached houses
• Modern family homes at Cottenham Grove and Oakington Gate
• Period properties in the Conservation Area

Knowing how Cottenham properties were built helps explain why some defects show up and how they should be dealt with. Older houses in the village, especially those in the Conservation Area around the High Street and Church Street, were usually made with solid brick walls, often using local red brick or the distinctive gault brick found in this part of Cambridgeshire. These solid walls, typically nine inches thick, were laid with lime-based mortar rather than modern cement, so they allow some moisture movement, but the mortar itself can break down over time.

The roofs on these older homes were traditionally formed with timber cut rafters and finished with slate or clay tiles. Many will now be nearing, or have passed, their expected lifespan, so our surveyors look carefully for deterioration, slipped tiles, or defective flashing that might let water in. We also note original lime mortar pointing and any previous repairs using the wrong cementitious mortar, since these can trap moisture within the brickwork.

Properties built between 1919 and 1980 usually have cavity wall construction, with an outer leaf of brickwork and an inner leaf of concrete blocks. Many of them also have suspended timber floors, although that became less common later on as solid concrete ground floors took over. Our inspectors check the condition of the cavity wall ties, which can corrode with age, and look for any sign of damp penetrating through the external envelope.

Newer schemes such as Oakington Gate by David Wilson Homes and Cottenham Grove by Bovis Homes use modern construction methods, including brick and block cavity walls, often with some timber frame elements, along with engineered roof trusses. These homes generally meet current building regulations, but our surveyors still look for the common new-build snags, such as poor insulation, badly installed damp-proof courses, and roof defects that are not obvious at first glance.

• Solid brick walls in period properties
• Cavity wall construction in post-war homes
• Timber cut rafters in older roofs
• Modern engineered roof trusses in new builds

Surveying properties across Cottenham and the surrounding South Cambridgeshire villages has shown us a few issues that crop up again and again. The clay soil conditions mean subsidence and heave are more common here than in many other parts of the country. Homes with large trees, especially those close to the building, are particularly exposed because the roots draw moisture from the soil and cause it to shrink. Our surveyors examine cracking patterns in walls carefully, then judge whether the cracks are active and what is behind them.

Damp is another regular finding, particularly in older properties that may have no proper damp-proof course, or where one has been bridged by raised ground levels outside or internal cement screeds. Rising damp can damage wall plaster and timber skirtings, while penetrating damp often comes from faulty gutters, damaged roof coverings, or damaged external render. In a village like Cottenham, where many homes are decades old or over a century old, these matters come up often. Our surveyors use moisture meters and thermal imaging where suitable to find hidden damp problems.

Timber defects, including woodworm infestation and both wet and dry rot, are often linked to existing damp or timber that has been exposed to moisture. Our surveyors inspect all visible and accessible timber, such as floor joists, ceiling joists, and structural beams, looking for active infestation or decay that could affect the structure of the property. In older cottages on the High Street, we often find historic timber framing that needs careful assessment.

Because Cottenham sits low in the Fens, drainage problems also turn up regularly during our surveys. The flat ground means surface water can collect in heavy rain, and properties near drainage ditches or lodes may face particular difficulties. We check guttering and drainage systems, inspect fall pipes and underground drainage where they can be accessed, and record any sign of earlier flooding or water damage that might affect long-term durability.

• Subsidence and heave from clay soils
• Rising and penetrating damp
• Woodworm and rot in timber elements
• Drainage and gutter defects
• Roof covering deterioration
• Defective pointing and mortar decay

Life in the Cambridgeshire Fens brings environmental factors that have a direct effect on property condition and insurance. Cottenham’s low-lying position means surface water flooding is a recognised risk, especially during heavy rain when the ground is saturated and drainage systems are overwhelmed. The network of drainage ditches and lodes that crisscrosses the area, while vital for water management, can also create a flood risk for nearby homes. Environment Agency flood maps show that parts of Cottenham, particularly those nearer watercourses and the fenland edges, have a medium to high risk of flooding.

Our surveyors look for signs of previous flood damage, including water staining on walls, lifted floor coverings, or socket positions that may suggest flooding has happened before. We also assess flood resilience measures, such as non-return valves on drainage, the height of electrical circuits above floor level, and any waterproof renders or tanking systems to basement or lower ground floor areas. Homes in higher-risk flood zones may need specific surveys or insurance considerations, and we flag those in our report.

For buyers, understanding flood risk matters not only for the property’s immediate condition, but also for future insurance premiums and the possibility of the home being harder to sell later on. Our survey gives you the information needed to make a sensible decision and weigh those points as part of the purchase. We can advise on flood resilience measures that might be put in place and explain how the property’s flood risk could affect your buildings insurance costs, which can be significant in this area.

Because Cottenham is close to Cambridge and remains a popular choice for families, flood risk is often balanced against the benefits of living in this attractive fenland village. Our reports give you the factual information needed to judge that balance properly, so you know exactly what you are buying and any steps that may be needed to protect your investment.