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Common Defects Found in Home Survey

Published by Abby Morley 22 January 2025

Home surveys are a crucial step in the property buying process, revealing potential issues that may not be apparent during a casual viewing.

These comprehensive assessments, conducted by chartered surveyors, provide invaluable insights into a property’s condition and structural integrity.

Common defects uncovered in home surveys include damp problems, structural issues, roof damage, faulty wiring, and inadequate insulation.

Homebuyer reports and building surveys are two types of assessments that offer varying levels of detail.

A homebuyer report typically covers visible defects and potential risks, whilst a building survey provides a more in-depth analysis of the property’s condition. These surveys can uncover problems ranging from minor cosmetic issues to serious structural concerns that may affect the property’s value and safety.

Understanding the common defects found in home surveys empowers buyers to make informed decisions and negotiate more effectively.

It also helps homeowners prioritise maintenance and repairs, ensuring their property remains in good condition for years to come.

By identifying issues early, property owners can address problems before they escalate into costly repairs or safety hazards.

Understanding Home Surveys

Home surveys provide crucial insights into a property’s condition before purchase. They highlight potential issues and maintenance needs, helping buyers make informed decisions.

Importance of a Home Survey

A home survey is essential for identifying defects that may not be visible during a casual viewing. It can reveal structural problems, damp issues, or outdated systems that could require costly repairs.

By uncovering these issues early, buyers can negotiate the purchase price or budget for necessary work.

Professional surveyors assess the property’s overall condition, safety, and compliance with building regulations. This information is invaluable for understanding the true value of the property and avoiding unexpected expenses after purchase.

A thorough survey can also provide peace of mind, confirming that a property is a sound investment. For older or unique properties, a detailed survey is particularly important to uncover any hidden problems.

Different Types of Surveys

Several survey options are available to suit different property types and buyer needs:

  1. Condition Report: A basic survey suitable for newer properties in good condition.
  2. Homebuyer Report: More detailed, covering visible issues and including a valuation.
  3. Building Survey: The most comprehensive option, ideal for older or unusual properties.

Each type offers varying levels of detail:

Survey Type Depth of Inspection Suitable For
Condition Report Surface-level check Modern homes
Homebuyer Report Moderate detail Standard properties
Building Survey In-depth analysis Older or complex buildings

Buyers should choose the survey that best fits their property and risk tolerance. A more detailed survey may cost more initially but can save money in the long run by identifying potential issues early.

Structural Concerns

Structural issues can significantly impact a property’s safety and value. These problems often require extensive repairs and may deter potential buyers.

Understanding common structural defects is crucial for homeowners and prospective purchasers alike.

Subsidence and Structural Movement

Subsidence occurs when the ground beneath a property sinks, causing the building’s foundations to shift. This can lead to severe structural damage. Signs of subsidence include:

  • Diagonal cracks in walls, especially near doors and windows
  • Doors and windows sticking or not closing properly
  • Sloping or uneven floors

Causes of subsidence may include:

  • Clay soil shrinkage during dry periods
  • Tree roots absorbing moisture from the soil
  • Leaking drains washing away soil

Professional underpinning might be necessary to stabilise the property. This can be costly, often ranging from £5,000 to £50,000 depending on the extent of the problem.

Cracks in Walls and Foundations

Not all cracks indicate serious structural issues, but some can be concerning. Hairline cracks are often cosmetic, while wider or moving cracks may suggest deeper problems.

Types of cracks to watch for:

  • Vertical cracks: Usually less serious, often due to settlement
  • Horizontal cracks: Can indicate serious structural issues
  • Stepped cracks: May suggest subsidence or ground movement

Surveyors use a crack width gauge to assess severity:

  • 0-5mm: Generally cosmetic
  • 5-15mm: Moderate, may require attention
  • 15mm+: Severe, likely structural issue

Foundation cracks are particularly worrisome and may require immediate attention from a structural engineer.

Roof and Chimney Faults

Roof defects can lead to water ingress and subsequent damage to the property’s structure. Common issues include:

  • Missing or damaged tiles
  • Sagging roof structure
  • Deteriorated flashing around chimneys and vents

Chimney problems to look out for:

  • Leaning or unstable chimneys
  • Crumbling mortar joints
  • Damaged or missing chimney pots

A thorough roof inspection is essential during a property survey. Repairs can range from simple tile replacement to complete roof overhauls, with costs varying accordingly.

Chimney repairs often involve repointing or, in severe cases, rebuilding, which can be expensive and disruptive.

Damp and Mould

Damp and mould are serious issues that can affect both the structural integrity of a property and the health of its occupants. These problems often stem from excess moisture and poor ventilation.

Identifying Different Types of Damp

Rising damp occurs when groundwater moves up through walls and floors. Look for tide marks on walls, peeling paint, and damp patches near the floor.

Penetrating damp comes from external water entering the building. Check for damp patches on walls, ceilings, or around windows.

Condensation is the most common type of damp. It forms when warm, moist air meets cold surfaces.

Signs include water droplets on windows, black mould on walls, and musty odours. Poor ventilation exacerbates this issue, especially in bathrooms and kitchens.

Assessing Mould and Its Cause

Mould thrives in damp conditions and can spread rapidly. Black or green patches on walls, ceilings, or furnishings are telltale signs. Mould often indicates underlying damp problems.

To assess mould, examine its extent and location. Bathroom mould might stem from poor ventilation, while mould behind furniture could signal condensation issues. A musty smell often accompanies mould growth.

Health risks associated with mould include respiratory problems and allergic reactions. Prompt identification and treatment are crucial to prevent these issues.

Rot and Wood-Destroying Organisms

Damp conditions can lead to rot and attract wood-destroying organisms. Dry rot is particularly destructive, affecting both softwood and hardwood. It can spread through brickwork and masonry, causing extensive damage.

Signs of dry rot include cracking or shrinking timber, a damp, musty smell, and grey strands on wood.

Woodworm, another common issue, leaves small holes in timber. Active infestations produce fresh sawdust beneath these holes.

Regular inspections can help catch these problems early. Addressing the source of moisture is key to preventing rot and wood-destroying organisms from taking hold.

Insulation and Ventilation

Proper insulation and ventilation are crucial for a home’s energy efficiency, indoor air quality, and structural integrity. Deficiencies in these areas can lead to significant issues and costly repairs if left unaddressed.

Insulating Materials and Efficiency

Inadequate insulation is a common defect found in home surveys. Many older homes lack sufficient insulation in walls, lofts, and floors, leading to heat loss and increased energy bills. Surveyors often note gaps in insulation or outdated materials that no longer meet current standards.

Loft insulation should be at least 270mm thick to comply with UK building regulations. Poorly installed or compressed insulation can reduce its effectiveness.

Cavity wall insulation may be missing or incomplete, especially in homes built before the 1920s.

Surveyors check for signs of damp or condensation, which can indicate insulation problems. Thermal imaging cameras may be used to identify cold spots and areas of heat loss.

Ventilation and Indoor Air Quality

Poor ventilation is a frequent issue in modern, airtight homes. Insufficient airflow can lead to condensation, mould growth, and poor indoor air quality. Surveyors look for blocked vents, inadequate extraction fans, and signs of moisture buildup.

Trickle vents on windows should be present and functional to allow controlled air exchange. Bathrooms and kitchens require proper extractor fans to remove moisture and odours. Surveyors may note the absence or malfunction of these essential ventilation features.

Loft spaces need adequate ventilation to prevent condensation and rot in roof timbers. Blocked soffit vents or insufficient roof vents can lead to serious issues. Surveyors check for proper airflow and signs of moisture damage in these areas.

Electrical, Gas, and Heating Systems

Home surveys often reveal issues with electrical installations, gas systems, and heating components. These critical systems require careful inspection to ensure safety and functionality.

Electrical Installation Quality

Electrical issues are common findings in property surveys. Outdated wiring, faulty connections, and inadequate fuse boxes pose safety risks.

An Electrical Installation Condition Report (EICR) may be recommended to assess the system’s safety and compliance with current regulations.

Surveyors check for visible signs of wear, exposed wires, and outdated components.

Older properties might have aluminium wiring, which can be a fire hazard. Insufficient socket outlets or lack of RCD protection are also frequent concerns.

Upgrading electrical systems can be costly but is essential for safety. Partial rewiring or full system replacement may be necessary depending on the property’s age and condition.

Gas Safety and Boiler Conditions

Gas safety is paramount in any property assessment. Surveyors look for signs of gas leaks, improper installations, and outdated appliances. A Gas Safety Record, performed by a Gas Safe registered engineer, is crucial for confirming the safety of gas systems.

Boilers are a key focus, with surveyors noting their age, efficiency, and overall condition. Older boilers may need replacement to meet current energy efficiency standards. Flue arrangements and ventilation are checked to ensure proper exhaust of combustion gases.

Faulty gas systems can lead to carbon monoxide poisoning, making thorough inspection critical. Surveyors may recommend further investigation by specialists if concerns arise.

Central Heating and Radiator Performance

Central heating systems are evaluated for efficiency and functionality. Surveyors assess radiators for even heat distribution, noting any cold spots or leaks. Thermostatic radiator valves (TRVs) are checked for proper operation.

Pipework is inspected for signs of corrosion or leaks, particularly in older properties where iron pipes may still be in use. The presence of a functioning programmer and room thermostat is noted to ensure efficient system control.

Underfloor heating systems require special attention, with surveyors checking for even heat distribution and potential damage to flooring materials. Energy efficiency ratings of the overall heating system are considered, with recommendations for improvements if necessary.

Invasive and Problematic Species

Home surveys often uncover invasive plants and harmful materials that can pose significant risks to properties. These issues require prompt attention and specialised handling to prevent damage and ensure safety.

Identifying Japanese Knotweed

Japanese knotweed is a highly invasive plant species that can wreak havoc on buildings and landscapes. It grows rapidly, with bamboo-like stems reaching up to 3 metres in height. The plant’s leaves are heart-shaped and bright green, while its flowers are small and cream-coloured.

Knotweed’s extensive root system can penetrate foundations, walls, and drains, causing structural damage. It’s particularly problematic near period properties, as it was introduced to the UK in the 19th century as an ornamental plant.

Surveyor reports will flag any signs of Japanese knotweed on or near the property. If detected, professional removal is crucial, as improper handling can lead to further spread. Mortgage lenders often require treatment plans before approving loans for affected properties.

Another concern in older homes is asbestos. This fibrous mineral was widely used in construction until the late 20th century. Asbestos-containing materials (ACMs) may be found in insulation, floor tiles, and cement products.

Whilst intact ACMs pose minimal risk, damaged or disturbed asbestos can release harmful fibres. Surveyors will note potential asbestos presence, recommending professional testing and removal if necessary.

Woodworm, though not invasive, can also be problematic. These wood-boring beetles leave small holes in timber, potentially weakening structural elements. Surveys will identify active infestations, distinguishing them from old, treated cases.

Water and Plumbing Concerns

Water-related issues can cause significant damage to a property if left unchecked. Detecting leaks, assessing faulty drain pipes, and evaluating water damage are crucial aspects of a home survey.

Detecting Leaks and Faulty Drain Pipes

Surveyors employ various methods to identify leaks and faulty drain pipes. Visual inspections can reveal damp patches, mould growth, or discolouration on walls and ceilings. Moisture meters help pinpoint areas of high moisture content.

For drain pipes, CCTV cameras may be used to inspect internal conditions. Signs of faulty drains include:

  • Foul odours
  • Slow-draining sinks or toilets
  • Gurgling sounds from pipes
  • Damp patches on external walls

Surveyors also check for outdated plumbing materials, such as lead pipes, which can pose health risks and may need replacement.

Assessing Water Damage and Repair Needs

Water damage can manifest in various forms, from minor stains to severe structural issues. Surveyors look for:

  • Peeling paint or wallpaper
  • Warped flooring or skirting boards
  • Crumbling plaster
  • Rotting timber

The extent of damage determines repair needs. Minor issues might require simple fixes like replacing a washer or sealing a joint. More severe cases could necessitate extensive work, including:

  • Replacing damaged plasterboard
  • Treating timber for rot
  • Repairing or replacing damaged flooring
  • Addressing the root cause, such as fixing a leaky roof or faulty guttering

Surveyors provide recommendations for repairs and may suggest further specialist inspections if needed.

Property Purchase Advice

Navigating the property purchase process requires careful consideration and informed decision-making. Understanding key factors can help both first-time buyers and existing homeowners make sound investments.

Advice for First-Time Buyers

First-time buyers should prioritise thorough research before committing to a property purchase.

  • Start by determining your budget, factoring in additional costs like stamp duty and solicitor fees.
  • Obtain a mortgage in principle to strengthen your position when making offers.
  • Consider the location carefully, assessing transport links, local amenities, and potential for future growth.

Engage a qualified surveyor to conduct a comprehensive property inspection. This will identify any defects or issues that could impact your decision or negotiating position. Don’t hesitate to ask questions about the property’s history, maintenance, and any recent renovations.

Familiarise yourself with the conveyancing process and choose a reputable solicitor to handle the legal aspects of your purchase. Be prepared for potential delays and have contingency plans in place.

Considerations for Existing Homeowners

Existing homeowners looking to purchase a new property face unique challenges.

Assess your current home’s value and determine whether to sell before buying or pursue a simultaneous sale and purchase. Consider the impact on your existing mortgage and explore options for porting or securing a new loan.

Evaluate your long-term needs when selecting a new property. Factor in potential lifestyle changes, such as expanding family or retirement plans. Investigate the local property market trends to ensure you’re making a sound investment.

If you’re considering a renovation project, budget carefully for potential works and factor these costs into your overall purchase decision. Seek professional advice on planning permissions and building regulations if significant alterations are planned.

Remember to factor in the costs of moving, including estate agent fees, removals, and potential temporary accommodation if there’s a gap between sale and purchase completion dates.

Frequently Asked Questions

What issues typically warrant a price reduction following a home survey?

Major structural problems like foundation issues or extensive roof damage often justify price reductions. Severe damp, electrical system faults, or presence of hazardous materials like asbestos may also warrant negotiations. The cost of necessary repairs typically informs the extent of price adjustments.

Who is responsible for addressing defects identified in a house survey?

Generally, the seller is responsible for disclosing known defects, but not for fixing them unless agreed upon. Buyers usually take on the property ‘as is’ after purchase. However, negotiations can occur to address significant issues before completion.

What constitutes a 'major defect' in the context of home surveys?

Major defects are serious issues that affect the property’s structural integrity, safety, or value. These may include subsidence, severe roof damage, extensive damp problems, or faulty wiring. Such defects often require substantial repairs and can impact the property’s habitability.

Which elements should be included in a comprehensive house survey?

A thorough survey should assess the property’s structure, roof, walls, floors, and foundations. It must examine electrical and plumbing systems, heating and insulation. The survey should also identify damp issues, wood rot, and potential infestations.