RICS Level 2 Survey in B37

Chelmsley Wood accounts for a large share of B37's housing stock and has a particular character: predominantly terraced and semi-detached homes built by Birmingham City Council between 1965 and 1975. These properties used cavity wall construction with early-generation steel cavity ties, original single-skin concrete floor screeds, and flat-felt roof extensions on many later additions. In the last three years, terraced houses have accounted for 491 of the 1,019 recorded transactions in B37, confirming terraces as the dominant transaction type in the postcode.

Marston Green sits in the eastern part of B37, closer to the airport corridor, and has a more mixed housing age profile. Properties here range from 1930s interwar semis with their characteristic bay windows and rendered upper floors to post-war detached homes with larger plots. The average detached price of £395,269 in B37 reflects the higher-value stock concentrated in Marston Green and Fordbridge. These older properties carry the typical risks of their era: lime mortar degradation, original steel Crittal windows that may have been replaced without planning consent, and chimney stacks that require regular repointing.

Kingshurst, in the north of B37, developed alongside Chelmsley Wood with similar estate housing from the 1950s-1970s. Flats and maisonettes are more common in Kingshurst, with 146 flat transactions recorded over the last three years in the wider B37 area. Flat sales on estate blocks require attention to the lease length, service charge history and the condition of communal areas - all matters our surveyor addresses in the legal issues section of the Level 2 report.

• Chelmsley Wood 1960s-1970s terraces: early-generation cavity ties, original floor screeds, felt flat-roof extensions
• Marston Green interwar semis: lime mortar degradation, Crittal window replacements, chimney repointing
• Kingshurst estate blocks: lease length checks, communal area condition, service charge history
• Post-war council semis: asbestos-containing materials in pre-2000 properties, outdated consumer units
• Airport corridor properties: transport vibration review, noise assessment awareness for valuations

Cavity wall construction became standard for new homes in the post-war period and was widely used throughout Chelmsley Wood and Kingshurst. The cavity between the inner and outer leaf of brickwork was originally bridged with metal ties to keep the two leaves acting together structurally. In the 1960s and 1970s, mild steel butterfly ties were common. After decades of exposure to moisture within the cavity, these steel ties corrode, expand and lose their grip on the mortar bed.

Corroded ties cause the outer leaf of brickwork to become unstable. The visible indicator is horizontal cracking through mortar courses at regular intervals, corresponding to the tie height - typically every four to six brick courses. In advanced cases, the outer leaf may show a slight outward bow. Our surveyors check all external elevations specifically for this cracking pattern and note the distribution and severity. Where tie failure is suspected, we recommend a specialist cavity wall tie survey using borescope camera inspection to confirm the extent.

Cavity wall tie replacement is a well-established remediation process: new stainless steel ties are drilled through the outer leaf and mechanically fixed to the inner leaf. Costs for a standard semi-detached depend on the number of failed ties but typically range from £800 to £2,500. This is cost information you need before exchange, not after. Identifying suspected tie failure in our Level 2 report gives you grounds to request a specialist investigation and potentially negotiate on price.

B37's proximity to Birmingham Airport and the National Exhibition Centre creates consistent housing demand from airport staff, events workers and businesses operating around the airport corridor. Marston Green station provides direct rail links to Birmingham New Street and Coventry, making B37 attractive to commuters from both directions. This employment infrastructure supports the B37 property market even during periods of wider market softness - 393 transactions were recorded in B37 in 2024 and 280 in the first part of 2025, broadly consistent with the national pattern of reduced transaction volumes post-2022.

Airport proximity does affect some aspects of the survey assessment. Properties near the eastern edge of B37, under the Instrument Landing System approach corridor, are subject to aircraft noise. Our surveyors note proximity to the airport in the environmental section of the report and identify any visible signs of vibration-related cracking, though this is rarely a structural issue for properties at B37 distances. Buyers should be aware that mortgage lenders sometimes require a specific noise assessment for properties within the airport's noise contour zones.

The flat, low-lying terrain of parts of B37 - particularly around Fordbridge and the river corridor east of Chelmsley Wood - means surface water drainage management is relevant. Standing water around external walls is a contributing factor to rising damp and foundation issues. Our surveyor checks drainage falls away from the building on all sides and notes any evidence of ponding or blocked gulley channels that could allow water to track back towards the structure.