RICS Level 3 Survey in Marishes

Marishes properties show a broad spread of building styles, which fits the village’s rural character and long history. A lot of the homes are built in traditional North Yorkshire stone, often with solid walls instead of the cavity wall construction more common in newer houses. Those older methods have plenty of charm, but they also bring their own problems, and they need surveyors who know what to look for. Our team understands how these traditional buildings age, and which defects tend to turn up first.

Near the River Derwent valley, the ground around Marishes can include clay substrates that move as they shrink and swell. That can cause foundation movement over time, especially where a property has shallow foundations or nearby trees and vegetation. Our inspectors give these environmental factors close attention when surveying in the Marishes area. We check for signs of movement, cracking patterns, and any sticking doors or windows that might point to foundation issues.

Many of the properties in this rural hamlet have also been altered and extended over the years, sometimes over decades, sometimes over centuries of occupation. Well-meant changes can still create structural complications that call for careful assessment. Our Level 3 surveys give the depth needed to see how those alterations may have affected the building’s overall integrity. We look at the way extensions tie into the original structure, check for proper support and ties, and consider whether the new work meets acceptable building standards.

Marishes is remote enough that plenty of homes sit in isolated spots, reached by narrow lanes or even unmade tracks. That can affect upkeep, because owners may put off repairs if access is awkward or contractors are reluctant to travel out. Our inspectors pick up visible signs of deferred maintenance that might point to deeper problems beneath the surface.

• Traditional stone wall construction
• Solid floor structures
• Age-related wear patterns
• Local flood zone considerations
• Historical modification work
• Tree and vegetation proximity

Across Marishes, the dominant building traditions are the older North Yorkshire methods rather than modern construction standards. Most cottages and farmhouses in this part of Ryedale were built from locally sourced limestone or sandstone, laid as random rubble or ashlar depending on the period and the budget at the time. These solid stone walls, usually 450-600mm thick, were built without the cavity gaps used in modern housing, so they rely on their mass and any damp-proof course already in place to keep moisture out. Our surveyors know how to assess this kind of wall for deterioration, bowing, and the mortar erosion that often affects historic stonework.

Lime mortar was once the standard for pointing and bedding stonework throughout North Yorkshire, and many Marishes properties still have the original mortar in place. It is softer than modern cement-based products. Lime lets a building breathe and can cope with slight movement, but it still needs periodic repointing to stop water getting in. During every survey, we check the pointing closely, noting places where mortar has perished or where cement has been used inappropriately, since that can trap moisture and make the stone faces spall in freeze-thaw conditions.

Older roofs in Marishes are usually timber rafters carrying natural slate, clay tiles, or, in some cases, stone flags. By modern standards, insulation is often limited, and hidden defects are not uncommon, rotted rafters at eaves level, damaged underfelt, or poor ventilation that leads to condensation problems. Where access allows, our inspectors go into roof spaces, move insulation aside to inspect the timbers, and assess the roof covering from both inside and outside the property.

• Random rubble stone walls
• Lime mortar pointing
• Solid stone lintels
• Timber floor joists
• Traditional rafter roofs
• Natural slate and clay tile coverings

Our work across Ryedale, including Marishes, has shown a number of recurring defects that buyers should keep in mind. Traditional stone-built properties in this region often show signs of rising damp, especially where original damp-proof courses have failed or were never installed in the first place. That moisture can affect wall plasters, timber floors, and internal decorations, so the issue is both cosmetic and structural. We measure moisture levels during our surveys and give recommendations that suit the construction type of each property.

Timber defects are another common issue in Marishes homes, given the age of much of the local housing stock. Woodworm, wet rot, and dry rot can weaken structural timber elements, including floor joists, ceiling beams, and roof rafters. Our inspectors examine these key components carefully, assess their current condition, and set out what treatment or repair may be needed. We also distinguish active woodworm infestations, which need treatment, from old damage that has stabilised but may still need watching.

Roof problems turn up often in surveys of older Marishes properties. Missing or slipped tiles, deteriorating lead flashing around chimneys, and damaged or missing ridge tiles are all common findings for our surveyors. Because the setting is rural, trees and vegetation can hang over roofs, causing extra damage from falling branches and built-up debris. The report sets out these issues and recommends the right remedial action. We also inspect gutters and downpipes, since poor drainage can speed up deterioration of the building fabric.

Homes near the River Derwent and its tributaries can face surface water flooding, particularly in periods of heavy rainfall. Our surveyors note the topography around each property and look for evidence of earlier water ingress, including tide marks, watermarked walls, and damaged plaster that may point to past flooding. We do not carry out detailed flood modelling, but we do advise buyers on the property’s position in relation to known flood risk areas and recommend further enquiries through the EA flood mapping service.

• Rising damp and damp-proof course failures
• Timber rot and woodworm infestation
• Roof tile damage and slipped slates
• Chimney stack deterioration
• Foundation movement and subsidence
• Drainage and guttering defects