RICS Level 2 Survey in NP12

Our RICS Level 2 Survey involves a detailed visual inspection of every accessible part of the property. We check the roof, including tiles, flashing and chimneys, then work through the walls, floors, ceilings and joinery across the home. Where foundations are visible, we inspect them, and we also assess doors, windows and the building’s overall structural stability. In the NP12 area, where many homes went up during the housing boom of the mid-20th century, we pay close attention to the recurring problems found in the inter-war semis common in Blackwood and the surrounding valleys, especially worn roof coverings and outdated drainage systems.

We also look closely at the damp-proof course, insulation and ventilation. Our surveyors use specialised equipment to check moisture levels in walls and floors, which helps us spot dampness that is not yet obvious to the eye. Around Caerphilly and Blackwood, the clay-rich soils are known for shrink-swell ground movement, so we inspect for signs of subsidence and foundation stress that could point to deeper ground stability problems. That matters all the more in places such as Pontllanfraith and Senghenydd, where historical mining activity may have left underground voids.

Visible electrical wiring, plumbing and drainage are all inspected, and we note any obvious defects or safety concerns that should be checked by qualified tradespeople. We also cover garages, sheds, boundary walls, fences and the general condition of the surrounding grounds. For homes in flood-risk locations near the River Rhymney, we assess drainage and suggest suitable protections where needed. In parts of NP12, average household income is around £36,900, so having a clear picture of likely repair costs is important for sensible budget planning.

Some properties need a little more context. Within the 16 designated conservation areas across Caerphilly County Borough, older and listed buildings come with extra considerations. Blackwood has 15 listed buildings and Pontllanfraith has 23 listed buildings, so homes in these places often call for particular care during inspection. We flag architectural or historic features that could affect renovation plans or insurance requirements.

• Roof structure and covering
• Walls, floors and ceilings
• Foundations and structural integrity
• Damp and moisture detection
• Electrical and plumbing visible defects
• Drainage and guttering
• Outbuildings and boundaries

Across NP12, a few issues come up again and again. Dampness is one of the main ones, whether that is rising damp, penetrating damp or condensation caused by poor ventilation, leaking roofs or defective damp-proof courses. We also see water ingress and timber rot in some newer-build properties around Caerphilly, often linked to poorly fitted windows, so our surveyors look carefully for that. Condensation tied to modern living patterns and limited ventilation is especially common in flats and terraced houses, where air circulation can be restricted.

Structural movement is another regular concern here. Homes built on clay-rich soils can be affected by shrink-swell subsidence, with the ground expanding in wet conditions and contracting in dry spells. That movement can lead to cracking in walls, uneven floors and doors or windows that no longer line up properly. In former mining areas such as Senghenydd and elsewhere in the NP12 postcode, there can also be underlying voids from historical coal mining activity, which may cause ground instability and subsidence. The South Wales Valleys have a rich mining heritage, but it leaves a legacy that means we inspect carefully for mining-related movement that could affect structural integrity.

Roof defects are consistently picked up in our NP12 surveys. Missing or broken tiles, leaks and sagging are all common, usually because of age, weather exposure or long-term lack of maintenance. In Blackwood and Pontllanfraith, many homes still retain original roofing from the time they were built, so we check thoroughly for deterioration that may not be visible from ground level. The South Wales Valleys are exposed to Atlantic weather systems, and over time that puts real strain on roofing materials.

Older electrics are another frequent finding, particularly in period and post-war housing. We often come across aging wiring systems and older electrical panels that may present safety risks and need review by qualified electricians. Many homes in the NP12 area were built to wiring standards now regarded as obsolete, including aluminium wiring in some post-war properties and consumer units that would not meet current regulations. Where we see signs of this, we recommend further investigation and any necessary upgrades by qualified electricians.

• Rising damp and condensation
• Roof tile damage and leaks
• Structural cracks from subsidence
• Outdated electrical wiring
• Poor drainage and guttering
• Timber decay and rot

NP12 has seen a good deal of new development in recent years. One example is Oakdale Place, which is delivering approximately 100 new homes on the former comprehensive school site in Oakdale, NP12 0HN. The scheme includes houses and flats with two, three and four bedrooms, available through private sale and affordable housing schemes. Caerphilly Homes and Willmott Dixon Construction Ltd built the development, with house types including The Sapling, The Acorn, The Oak and The Great Oak, giving buyers options across different needs and budgets.

Taylor Wimpey’s Cwrt Sirhowy development in Cwmgelli adds more new-build choice to the area. Here, three and four-bedroom detached homes range from around £300,000 to £370,000. The Byford three-bedroom detached homes start at £299,995-£302,000, while the larger Lanford four-bedroom properties are priced around £369,500. It is a significant investment in the NP12 area and naturally attracts buyers who want modern homes built with contemporary construction methods.

Even with a newbuild, we still strongly recommend a RICS Level 2 Survey. A recently constructed home can still have defects caused by building errors, material problems or design flaws. Our surveyors are trained to spot snagging issues in new builds, from badly fitted windows and doors to poor insulation and drainage defects. On busy developments, quality control can slip, and an independent professional assessment gives you useful protection for your investment. The NHBC Buildmark warranty included with new builds does not cover every possible issue, which is why a separate survey can still be worthwhile.

For first-time buyers in the NP12 area, this can be especially helpful. That is true in particular for buyers using shared ownership schemes at developments such as Oakdale Place, where understanding the property’s full condition is important when planning maintenance costs over the coming years. Our survey gives you that clarity before you complete the purchase.

• Oakdale Place (NP12 0HN)
• Cwrt Sirhowy (NP12)
• Various developments in Caerphilly
• New homes requiring snagging surveys

Environmental conditions matter in NP12, and we take them into account during our inspections. The South Wales Valleys are characterised by clay-rich soils with shrink-swell behaviour. When the ground becomes saturated, it can expand and put pressure on foundations, leading to structural movement. During long dry periods, the same soil contracts and may leave foundations with less support. We look for the usual warning signs, including diagonal cracks around windows and doors, sticking doors and uneven floors. Climate change is making these cycles more pronounced, with both heavier rainfall and longer dry periods affecting ground conditions.

The Caerphilly area’s mining heritage adds its own set of risks. Historical coal mining has left tunnels and shafts below ground, and over time these can collapse and create voids that lead to subsidence. Not every property is affected, but homes in former mining locations, especially around Senghenydd and the valleys leading into Blackwood, may face greater risk. Our surveyors take the local history into account and, if concerns arise during the visual inspection, we may suggest further investigations. In some cases, a mining report is the sensible next step for understanding the risks attached to a particular property.

Flooding is another point to consider in parts of NP12. The River Rhymney is designated as a Flood Warning Area, and while this inland postcode is not affected by coastal flooding, heavy rainfall can still bring surface water flooding and flooding from small watercourses. Caerphilly County Borough has a "Medium to High" overall local flood risk from these sources. Homes in lower-lying positions, or those with poor drainage, may be more vulnerable to water ingress, so we assess drainage arrangements and recommend improvements where necessary. As weather events become more extreme with climate change, this is becoming more important for buyers.

Heritage restrictions can also affect what you do with a property after purchase. NP12 includes homes within conservation areas and others that are listed, which may limit how they can be renovated or extended. Across Caerphilly County Borough there are 16 designated conservation areas and 415 listed buildings, with notable concentrations in Blackwood and Pontllanfraith. We note any heritage considerations that could affect your future plans, so there is less chance of an unpleasant surprise later.