RICS Level 2 Survey in IG6

IG6 is a well-established residential postcode covering Barkingside, Hainault and Clayhall, three suburbs with distinct characters but a shared housing stock rooted in the inter-war and post-war building periods. Barkingside, served by the Central Line at Barkingside station, is more suburban in feel with a mix of 1930s semis and post-war terraces. Hainault, served by the Central Line at Hainault station and adjacent to Hainault Forest Country Park, has a significant amount of post-war council-built stock that has been bought under right to buy. Clayhall sits between the two, offering primarily inter-war and early post-war terraced and semi-detached housing.

Terraced properties account for 42.9% of sales in the wider IG6 area, and at an average of £486,154, buyers are making substantial financial commitments on homes that may be 60 to 90 years old. These properties were built to construction standards that have changed considerably since then - solid brick or early cavity walls, original timber floors and joinery, and building services that in many cases have not been updated since they were installed.

The geology of the IG6 area adds a further layer of risk. Like most of the London Borough of Redbridge, IG6 is underlain by London Clay, a shrink-swell active formation that changes volume with moisture content. In dry conditions, and particularly during droughts when tree roots draw heavily on soil moisture, the clay contracts and properties above can experience differential settlement. Our surveyors check systematically for all visible indicators of subsidence and make clear recommendations where further investigation is needed.

• Clay soil subsidence risk assessment for all older IG6 properties
• Damp inspection using calibrated moisture meters
• Roof inspection covering tiles, flashings, chimneys and gutters
• Structural assessment covering walls, floors and foundations
• Electrical and heating installation commentary
• Drainage inspection of accessible inspection chambers
• Grounds assessment including garden boundaries and trees

Within the IG6 postcode, Barkingside (IG6 1) and Hainault (IG6 3) show notably different market trends. Barkingside saw price growth of 8.0% in the last 12 months, reflecting strong demand from buyers attracted to its Central Line connectivity and established residential streets. Hainault saw prices fall by 3.6% over the same period. Understanding the specific character of each sub-area helps buyers make sense of what their survey might find.

Barkingside's housing stock is predominantly 1930s and 1940s suburban development - semi-detached and terraced houses built for working families moving out of inner East London. These properties typically feature early cavity brick walls, though the cavities were often narrower than modern standards and less effective at managing moisture. Original steel-framed windows from this era are frequently replaced but original examples still appear, often affected by corrosion. Bay windows, a characteristic feature of 1930s housing, should be inspected for settlement, cracking at returns and window board deterioration.

Hainault's stock has a higher proportion of post-war construction, including properties originally built by local authorities from the late 1940s through the 1970s. These homes moved away from the 1930s suburban semi model toward larger, simpler designs with concrete roof tiles, cavity walls and fewer period features. Right-to-buy purchases and subsequent resales mean that survey findings here often focus more on maintenance backlogs, updated services, and the condition of shared amenities where the property remains part of a mixed tenure estate.

Based on our surveys across the IG6 area and comparable Redbridge housing stock, there are several defect categories that buyers should be prepared to encounter. None of these automatically mean you should not proceed with a purchase, but knowing they are present before exchange gives you options that disappear once you complete.

Clay-induced subsidence is the most serious potential finding. As described earlier, London Clay beneath IG6 is susceptible to shrink-swell movement. Properties with significant diagonal cracking, particularly around windows and door frames, should be assessed by a structural engineer before exchange. We identify and rate such cracking clearly in the report. Where further investigation is recommended, acting on it before exchange protects you from inheriting an ongoing structural problem.

Damp is the most frequently found defect category in IG6's older housing stock. Rising damp from deteriorated damp-proof courses, penetrating damp from failed pointing or blocked gutters, and condensation from poor ventilation in bathrooms and kitchens are all common. Our surveyors use moisture meters throughout the property to detect elevated moisture levels even where visual signs are not yet apparent.

• Clay subsidence - diagonal cracking wider at top near window/door corners
• Damp - rising damp at lower levels, penetrating damp through external walls
• Roof deterioration - cracked or slipped concrete tiles, failed flashings
• Outdated wiring - pre-1980 installations often need upgrading
• Bay window settlement - cracking at returns and lintel deterioration
• Flat roof extensions - limited lifespan covering, often nearing replacement
• Chimney stack deterioration - failed flaunching, spalled brickwork

Parts of the IG6 postcode border or are adjacent to Hainault Forest Country Park, a significant green space managed by the City of London Corporation. Proximity to open woodland is an appeal for many IG6 buyers, but it also has practical implications for property surveys. Mature trees near properties on clay soil are a significant subsidence risk factor.

Trees draw moisture from clay soil as their roots extend in search of water, and during dry summers this moisture extraction causes the clay to contract and shrink. Properties within 10 to 20 metres of mature trees - oaks, ash, willows and poplars are among the highest-risk species - are statistically more likely to experience clay shrinkage subsidence. Our surveyors note the proximity and species of trees near the property and assess any cracking in the context of that proximity.

If you are considering a property in Hainault close to the forest edge or a Barkingside home with large trees in the front or rear garden, factoring in a subsidence risk assessment is particularly worthwhile. Our survey provides the initial assessment. If the findings suggest active movement, a structural engineer and arborist report can provide the detailed analysis you need before proceeding.