The most thorough property inspection available - ideal for older homes and properties in the South Wales Valleys








Our RICS Level 3 Survey represents the most detailed property inspection available in the UK housing market. When you commission a building survey from Homemove, our qualified inspectors conduct a thorough examination of every accessible part of the property, from the roof structure down to the foundations. This level of inspection is particularly valuable for properties in the CF46 6 area, where much of the housing stock dates from periods when construction methods differed significantly from modern standards. We have surveyed properties across Treharris, including homes near the train station and along roads like Cardiff Road and High Street, giving us intimate knowledge of local construction patterns.
In the Treharris area, with its mix of terraced, semi-detached, and detached properties averaging around £169,000, a detailed structural assessment provides essential protection for your investment. Our inspectors have extensive experience surveying properties throughout the South Wales Valleys, understanding the specific construction characteristics and common issues found in local housing. Whether you are purchasing a Victorian terrace on High Street or a post-war semi-detached in one of the surrounding residential areas, we deliver comprehensive reports that help you make informed decisions. The recent market activity in CF46 6, with approximately 130 sales in the last year, shows continued interest in this valley community.
The CF46 6 postcode covers Treharris and its surrounding neighbourhoods, stretching from properties near the town centre out to residential areas leading toward Nelson and Abertridwr. This geographic spread means our surveyors encounter diverse property types, from compact miners' cottages to larger family homes built during different phases of the area's development. Understanding these local variations helps us provide more accurate assessments and identify issues that are particularly relevant to buyers in this specific part of the South Wales Valleys.

£169,769
Average House Price
130 properties
Annual Sales Volume
-17.69%
Year-on-Year Change
Terraced properties
Predominant Type
The CF46 6 postcode encompasses Treharris and surrounding areas in the South Wales Valleys, a region with a rich industrial heritage that has shaped its housing stock. Properties in this area often feature solid wall construction using local stone or brick, sometimes with render finishes, reflecting building practices from the late 19th and early 20th centuries. Our Level 3 Survey specifically addresses the construction methods typical of these older properties, examining walls, floors, roofs, and structural elements with the attention they require. The predominance of terraced properties in the area, as shown by recent sales data, indicates a significant stock of Victorian and Edwardian housing that requires experienced surveyors familiar with period construction.
One of the key considerations for buyers in the CF46 6 area is the potential for mining-related subsidence. Treharris sits within the South Wales Coalfield region, where historical coal mining activities have left a legacy that can affect property foundations and structural integrity. Our inspectors are trained to identify signs of movement, cracking, and other indicators that may suggest ground instability. While not all properties in the area will be affected, the historical mining context makes a thorough Level 3 Survey particularly valuable. Recent price data shows significant variation across different parts of CF46 6, with some sub-postcodes like CF46 6DU showing prices 36% down from 2021 peaks, which may reflect broader market conditions as well as property-specific factors.
The property market in CF46 6 has shown varied performance across different sub-postcodes in recent years. Some areas have experienced price corrections of 10-36% from previous peaks, while others have seen modest growth. Against this backdrop of market variability, a comprehensive survey provides certainty about the property's condition, helping you negotiate with confidence whether the survey reveals minor maintenance needs or more significant structural concerns that might affect the property's value. Our detailed reports give you the factual basis needed to make informed decisions in what remains a challenging market environment for buyers.
Source: Zoopla/Rightmove 2024
Our RICS Level 3 Building Survey provides an exhaustive examination of the property's condition. The inspector assesses all accessible areas including roofs, walls, floors, doors, windows, and fixtures. We examine the condition of timbers for rot and woodworm, check for damp penetration and rising damp, assess the condition of roof coverings and gutters, and evaluate the structural integrity of walls and foundations. For properties in the CF46 6 area, this includes particular attention to the solid wall construction common in older valley properties. Our team has identified numerous cases of degraded damp-proof courses in local properties, a common issue with older solid wall construction in the Welsh climate.
The report includes detailed findings on all significant defects discovered during the inspection, with clear explanations of what each issue means for the property's future maintenance and structural stability. We provide specific recommendations for remedial works, prioritise issues by their urgency, and include cost estimates where appropriate. This detailed approach helps you understand exactly what you are purchasing and allows you to budget for any necessary repairs or renovations. In our experience surveying CF46 6 properties, we commonly encounter issues with render failure, particularly on north-facing elevations where moisture exposure is highest throughout the year.
Our inspectors pay particular attention to the roof structures in local properties, as many terraces and period homes in the area feature traditional slate roofing that may be original or have been replaced with modern alternatives of varying quality. We check for slipped tiles, deteriorated flashing, and signs of previous water ingress that might not be immediately visible to untrained eyes. The wet Welsh climate means that roof defects can quickly lead to internal damage, making thorough assessment essential for any property purchase in the CF46 6 area.

Once you request a quote, we will provide a competitive fee for your CF46 6 property. Upon confirmation, we will arrange a convenient appointment date. Our inspectors typically require 2-4 hours to complete a thorough Level 3 Survey, depending on the property size and complexity. We work around your schedule and can often accommodate inspection dates within a few days of your enquiry, which is particularly important when chain transactions are involved.
Our qualified RICS surveyor will visit the property and conduct a comprehensive visual inspection of all accessible areas. For typical CF46 6 properties, this includes examining the roof space where accessible, checking walls both internally and externally, inspecting floors, windows, and doors, and testing plumbing and electrical installations where safely accessible. We move furniture and lift carpet edges where necessary to examine floor structures, and we use moisture meters to assess damp levels in walls and floors. Our surveyors are experienced with the access challenges common in terraced properties with limited storage or roof spaces.
Within 5-7 working days of the inspection, you will receive your detailed RICS Level 3 Survey report. The document includes a clear condition rating system, photographs of key findings, specific recommendations for repairs, and guidance on any further specialist investigations that may be required. We prioritised issues by their urgency, flagging any problems that require immediate attention versus those that can be planned for future maintenance. For CF46 6 properties where mining subsidence is a consideration, we will recommend appropriate specialist searches if our visual inspection raises concerns.
Properties in the South Wales Valleys may have been affected by historical coal mining activity. While not all properties are impacted, our Level 3 Survey includes specific assessment of subsidence risk and ground stability indicators. If mining subsidence is a concern, we may recommend a specialist mining report. This additional investigation uses historical mining records to assess whether the property sits above former mine workings that could cause ground movement.
The housing stock in CF46 6 reflects the area's development through different periods of British construction history. Terraced properties, which dominate sales in the broader CF46 postcode area, often date from the Victorian or Edwardian periods when coal mining and associated industries drove population growth in the valleys. These properties typically feature solid load-bearing walls, sometimes with decorative stone facades, and may have undergone various modifications over decades of occupation. Many original features remain, including cast iron fireplaces, sash windows, and traditional joinery that requires specialist assessment.
Semi-detached properties in the area often represent post-war construction from the mid-20th century, built using more conventional cavity wall techniques or solid brick walls with damp-proof courses that may have degraded over time. Detached properties in CF46 6 tend to be more recent additions to the housing stock, though some larger detached homes date from the interwar period. Each construction era brings its own characteristic defects, and our inspectors understand how to identify issues specific to each property type. The interwar detached properties often feature larger gardens and more complex roof structures that require detailed inspection.
Given the age profile of much of the local housing, CF46 6 properties commonly present issues related to damp, timber deterioration, and general wear and tear. Rising damp is frequently encountered in solid wall properties where damp-proof courses have failed or were never installed. Penetrating damp may affect roof coverings or render finishes, particularly given the wet Welsh climate. Timber elements such as floor joists, window frames, and roof structures may show signs of rot or woodworm infestation, especially where ventilation has been poor. Our surveyors use professional moisture meters and endoscopic cameras to assess the extent of these problems without causing damage to the property.
The local geology of the South Wales Valleys, with its underlying coal measures and clay deposits, can create additional challenges for property owners. Clay soils are prone to shrink-swell movement during periods of drought and rainfall, which can affect foundations particularly where trees are located nearby. While specific geological data for CF46 6 was not identified in our research, our inspectors remain alert to signs of ground movement that might indicate these underlying soil conditions. Properties on hillside locations may also face drainage challenges that require proper assessment during any building survey.
Based on our extensive experience surveying properties throughout the South Wales Valleys, certain defects appear more frequently in CF46 6 properties than in other areas. Render deterioration is perhaps the most common issue we encounter, particularly on properties facing prevailing winds from the west. The combination of rain, wind, and frost exposure means that traditional cement render and pebbledash finishes frequently crack, delaminate, or become discoloured over time. Our surveyors assess the extent of render failures and advise on appropriate repair strategies, as improper repointing can trap moisture and cause more serious problems.
Damp-related issues dominate our survey findings in the CF46 6 area. The high rainfall experienced in the South Wales Valleys, combined with the prevalence of solid wall construction, means that rising damp and penetrating damp are frequently identified. We measure moisture levels in walls at various heights to determine whether damp-proof courses are functioning and assess the condition of existing chemical damp-proof courses. Where we find elevated moisture readings, we investigate potential sources including defective gutters, missing or damaged pointing, and insufficient sub-floor ventilation. These findings are particularly important for buyers considering period properties, as remedial works can be significant.
Structural movement and cracking are assessed carefully in all CF46 6 surveys, given the historical mining context of the area. Our inspectors examine walls for patterns of cracking that might indicate subsidence or settlement, noting the direction, width, and location of any cracks observed. While some minor settlement cracking is common in older properties, our surveyors are trained to distinguish between cosmetic issues and more serious structural concerns that might require further investigation. We also check door and window frames for signs of movement, as doors that stick or windows that no longer close properly can indicate structural shift.
Roof and loft space inspection frequently reveals issues with the traditional slate roofs common on local properties. Many CF46 6 terraced houses feature pitched roofs that may have undergone partial re-roofing over the years, resulting in a mix of old and new slate materials. We check for adequate fixings, suitable underfelt, and proper condition of ridge tiles and verges. In the loft space, we assess the condition of rafters, joists, and any strutting, looking for signs of past water staining, rot, or woodworm activity that might not be visible from below.
Our Level 3 Survey examines all accessible areas of the property for defects common to South Wales Valleys housing. This includes checking for signs of mining subsidence given the area's coalfield location, assessing solid wall construction for damp penetration, inspecting timber elements for rot and woodworm, examining roof structures, and evaluating the condition of render and external finishes. We also check for issues related to the property's age and construction type, including any modifications that may have been made over the years that do not meet current building regulations.
A comprehensive RICS Level 3 Survey typically takes between 2 and 4 hours to complete, depending on the property size, layout, and condition. Smaller terraced properties may be completed in around 2 hours, while larger detached properties or those in poor condition may require a more extended inspection. Properties with complex roof structures, multiple extensions, or restricted access to loft spaces will naturally take longer to assess thoroughly. We always allow sufficient time to examine all accessible areas properly rather than rushing through the inspection.
While newer properties may be adequately served by a Level 2 Survey, a Level 3 Survey still provides valuable information even for more modern construction. The additional detail can reveal issues that would not be identified in a less comprehensive inspection, such as problems with recent conversions or extensions. However, if the property is a new build, under 10 years old, and of conventional construction, a Level 2 Survey may be more appropriate. We can advise on the best option when you request your quote, taking into account the specific characteristics of the property you are considering purchasing.
Our Level 3 Survey includes a visual assessment for signs of subsidence, including cracking patterns, door and window alignment issues, and signs of ground movement. While we cannot provide a definitive mining report, we will note any indicators of potential subsidence and recommend a specialist mining search if warranted. Properties in the South Wales Coalfield should typically undergo this additional investigation, which uses historical mining records to determine whether the property sits above former mine workings. The Coal Authority maintains records of past mining activity that can be checked, and we can advise whether this is necessary based on our inspection findings.
If our Level 3 Survey identifies significant issues, we will provide detailed recommendations and may suggest further specialist investigations. You can then use this information to negotiate with the seller, either requesting repairs before completion or adjusting the purchase price to reflect the cost of necessary works. In some cases, the findings may lead you to reconsider the purchase entirely. Our reports are detailed enough to support informed negotiations, whether you are dealing with minor maintenance items or major structural concerns that could affect the property's value or safety.
Survey fees depend on the property's value, size, and type. For a typical terraced property in the CF46 6 area, prices start from around £450, with larger or more complex properties costing more. We provide no-obligation quotes when you contact us, ensuring you know the cost before proceeding. The investment in a comprehensive survey is particularly valuable given the age and condition of much of the local housing stock, as it can reveal issues that would otherwise only become apparent after you have completed the purchase.
Based on the location of Treharris within the South Wales Coalfield, we generally recommend that buyers consider a specialist mining report for properties in CF46 6. Our Level 3 Survey includes a visual assessment for signs of mining-related movement, but a dedicated mining report uses official records to identify specific risks. These reports are relatively inexpensive and can be arranged through our team. The Coal Authority search will reveal whether the property sits above known mine workings, and this information can be important for insurance purposes and future property saleability.
Properties most likely to benefit from a Level 3 Survey in CF46 6 include Victorian and Edwardian terraces, which make up a significant portion of the local housing stock. These period properties often have solid walls, traditional construction methods, and may have undergone various modifications over the years. Interwar and post-war semi-detached properties also benefit from detailed inspection, as do any properties that show signs of structural movement, render deterioration, or damp issues. Even relatively modern properties may warrant the additional detail if they have been extended or modified from their original construction.
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The most thorough property inspection available - ideal for older homes and properties in the South Wales Valleys
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Homemove is a trading name of HM Haus Group Ltd (Company No. 13873779, registered in England & Wales). Homemove Mortgages Ltd (Company No. 15947693) is an Appointed Representative of TMG Direct Limited, trading as TMG Mortgage Network, which is authorised and regulated by the Financial Conduct Authority (FRN 786245). Homemove Mortgages Ltd is entered on the FCA Register as an Appointed Representative (FRN 1022429). You can check registrations at NewRegister or by calling 0800 111 6768.