RICS Level 3 Building Survey in Westerdale

Westerdale's housing stock is a world away from newer urban developments. Much of it is made up of traditional stone buildings put up before modern building regulations, so features now seen as standard are often missing. That is why we recommend a RICS Level 3 Survey here, as it is built to deal with the complications of older properties and can pick up defects a basic mortgage valuation or a Level 2 HomeBuyer Survey would miss.

We inspect every accessible part of the building, starting at the roof structure and working right down to the foundations. In places where clay soils can trigger shrink-swell movement, we watch closely for signs of structural movement. We also assess traditional lime mortar pointing, which needs a different approach from modern cement-based mortars, and we look over timber-framed windows, original floorboards, and historic fireplaces, all of which add character but can call for regular upkeep.

Close to the River Esk, flood risk becomes part of the picture. Our surveyors check for evidence of earlier water damage, any flood resilience measures already in place, and how the drainage appears to perform. We also note works that may have been completed without the right planning consent from the North York Moors National Park Authority, something that matters given the strict planning controls across this area.

The ground beneath Westerdale is mainly formed of Jurassic sandstones and shales, and in valley spots near the River Esk there are often clay-rich deposits as well. As moisture levels shift, those clay deposits can create a shrink-swell risk, with foundations moving slightly over time. We are trained to spot the quieter clues, cracking in solid stone walls, doors that stick at certain times of year, and slight dips or unevenness in floors. Some movement is perfectly typical in older buildings, but for a purchase decision it is vital to understand what is causing it and whether it has stabilised.

• Structural defects in load-bearing walls
• Roof condition and insulation levels
• Damp and condensation problems
• Timber decay and woodworm
• Foundation and subsidence concerns
• Flood risk and drainage issues

Across the North York Moors, traditional properties tend to show a few recurring defects, and rising damp is one we regularly identify. It is often found in older buildings with no proper damp-proof course, or where the original arrangement has failed over time. The signs may include tide marks on walls, peeling paintwork, and musty odours. We assess how serious it is and recommend suitable remedial action, which in traditionally built properties often means better ventilation rather than simply adding chemical damp-proof courses.

Timber defects are another major issue locally. Roof timbers can be especially prone to woodworm infestation and wet rot, particularly where water has been getting in through the roof. In ground-floor rooms, floor timbers may also show rot where damp-proof membranes are missing or no longer doing their job. We probe timber elements during the inspection to judge their structural integrity and to identify anything that needs immediate attention.

Roofing defects come up often in Westerdale. Slipped slates and damaged pantiles can let water in, which then leads to timber decay and damp internally. We also see age-related wear in lead flashing around chimneys and at roof junctions, failed pointing between stone tiles, and ridge tiles loosened by strong winds. On the exposed North York Moors, roof condition matters, so it is always a key part of our inspection.

Some properties here do show structural movement, especially where reactive clay soils shrink and expand as moisture levels change. We look for cracking in walls, doors and windows that stick, and uneven floors that could point to foundation movement. In older buildings, a degree of movement is not unusual and may already be stable, but working out the cause and whether monitoring is needed is important. We also check for signs of earlier flooding from the River Esk, including water staining, warped joinery, or earthed-up floor levels that may suggest flood resilience measures have been fitted.

We frequently find failures in traditional lime mortar and render in Westerdale properties, most often where earlier repairs have introduced cement-based mortars in the wrong places. That can trap moisture within the wall structure and speed up decay in the stone beneath. Our surveyors identify these unsuitable repair materials and recommend traditional lime-based alternatives so the building can breathe properly and retain its structural integrity for decades to come.

In Westerdale, local sandstone was the usual building material, quarried from sites across the Esk Valley. That stone, often gritstone or sandstone, was commonly set in random rubble courses with lime mortar, producing solid walls typically 400-600mm thick. Knowing how this form of construction works is central to maintaining it properly, because modern cement-based mortars can trap moisture and bring on both stone decay and internal damp problems.

Roofs on traditional buildings in this area were commonly covered in slate, brought in from Wales or the Lake District, or in locally made pantiles. Both need regular checking and maintenance, especially in the exposed settings typical of North York Moors villages. Many houses also have stone slate eaves details and traditional leadwork around chimneys and roof junctions, and those elements need specialist knowledge if they are to be repaired correctly.

Inside traditional Westerdale houses, floors were usually formed with timber joists spanning between load-bearing walls and original floorboards fixed directly above. These suspended timber floors often have poor or missing sub-floor ventilation, which can contribute to damp issues in ground-floor rooms. We assess the condition of the floors and record any evidence of rot or borer activity that may need attention before you buy.