Subsidence and Underpinned Property Insurance
Properties with a history of subsidence, structural movement, underpinning or foundation repairs may not always fit standard home or property insurance criteria. The information required will depend on the cause of movement, the repairs completed, the date of the event and whether the property has remained stable.
Quote Monkey can introduce you to a specialist broker experienced in arranging insurance for properties with previous subsidence, structural movement, underpinning or foundation repairs.
Specialist Insurance For Properties With Subsidence History
Previous subsidence does not always mean a property is uninsurable. Insurers will usually want to understand what happened, what caused the movement, what repairs were completed and whether the building has remained stable since the event.
A property may have been traditionally underpinned, stabilised using piling, repaired after drainage defects, monitored after tree-related movement or strengthened without full underpinning. Each situation can present differently to insurers, which is why supporting reports, repair records and claims history can be important.
A specialist broker can review the property history, repair documents and present circumstances before approaching insurers that may be willing to consider the risk.
What This Page Covers
This page is designed for property owners, leaseholders, freeholders, management companies, landlords, buyers and investors who need to understand how previous structural movement, underpinning, foundation repairs or historic subsidence claims may affect insurance.
The same structural history can affect a private home, leasehold flat, whole block, buy-to-let property, holiday let, commercial building or mixed-use property differently, depending on ownership, occupancy, construction, claims history and the insurance being requested.
Quote Monkey does not provide structural, surveying, legal, mortgage or valuation advice. We can introduce suitable enquiries to a specialist insurance broker for insurance review.
Looking For Insurance For An Underpinned Or Subsidence-Affected Property?
Whether the property has previously suffered subsidence, has been underpinned, has undergone ground stabilisation or has a historic structural movement claim, Quote Monkey can introduce you to a specialist broker experienced in reviewing properties with complex structural histories.
Any quotation or offer of cover will be subject to broker review, insurer acceptance, underwriting criteria, policy terms, conditions, exclusions and excesses.
Is It Definitely Subsidence?
Cracking, distortion or movement does not always mean a property has subsidence. A broker or insurer may require professional reports rather than relying on a property owner's own interpretation, because the cause can affect both the insurance presentation and the underwriting outcome.
Subsidence And Settlement
Subsidence usually involves downward movement of the ground supporting a building. Normal settlement may occur as a building adjusts after construction. The distinction can be important, and a qualified professional should determine the cause of unexplained or progressive cracking.
Non-Subsidence Cracking
Thermal movement, drying shrinkage, plaster cracking, lintel failure, defective materials, poor workmanship or structural alteration can all cause visible cracks. These issues should not automatically be described as subsidence without professional assessment.
Extensions And Differential Movement
Movement can occur where extensions, conservatories, porches, bay windows or converted garages meet older parts of a building. Different foundation depths, materials or construction periods may need to be explained to insurers.
Quote Monkey does not diagnose cracking or determine its structural cause. A specialist broker may rely on survey reports, structural engineer reports, monitoring records or insurer claim documents when presenting the property to insurers.
Understanding Subsidence, Heave And Landslip
Ground movement can take different forms. Insurers may need to understand what type of movement occurred, whether the cause has been identified, what work has been completed and whether the property is now stable.
Subsidence
Subsidence generally refers to downward movement of the ground supporting a building, which can allow foundations to settle unevenly. It may be associated with clay shrinkage, tree roots, leaking drains, water mains, historic mining, made ground or local ground instability.
Heave
Heave involves upward ground movement. It can occur where clay soils expand after moisture returns, sometimes following the removal of mature trees or changes in ground conditions. Insurers may want to know whether movement is historic, repaired or still being monitored.
Landslip
Landslip generally involves movement of land on sloping ground, such as hillsides, coastal slopes, riverbanks or sites affected by retaining wall failure, erosion or saturated ground. Specialist insurers may request additional reports.
Historic Movement Compared With Active Movement
Not every property with a movement history presents the same risk. Insurers may distinguish between historic, repaired and stable movement, properties where investigations are still underway and buildings where a previous claim or repair remains open.
Historic Subsidence
Historic subsidence usually describes movement that happened in the past, where the cause was investigated, repairs were completed and the property has since remained stable. Structural reports, claim correspondence and repair documents can help present the risk.
Active Or Suspected Movement
Active movement may involve cracking that is changing, monitoring that is still underway or repairs that have not yet been completed. This can be more difficult to place, and detailed information may be required before insurers can consider terms.
Previously Underpinned
A previously underpinned property may have had traditional foundation strengthening, piling or another structural repair method completed. Insurers may ask why the work was carried out, when it was completed and whether professional sign-off is available.
Repaired Without Underpinning
Some properties stabilise after drainage repairs, tree management, resin injection, crack stitching, masonry repairs or monitoring without traditional underpinning. Each property is assessed individually.
Subsidence Insurance For Flats, Maisonettes And Blocks Of Flats
Subsidence insurance for a flat can be more complicated than insurance for a single house because the insurance arrangement often depends on who owns and insures the whole building. An individual leaseholder will often be covered under a block buildings policy arranged by the freeholder, management company, residents' management company or Right to Manage company, rather than purchasing buildings insurance solely for their own flat.
A previous subsidence claim affecting one part of a block may still be material to the insurance of the entire building. Insurers may need to know whether movement affects one flat, a single elevation, an extension, balconies, garages, retaining walls, common parts or the whole structure.
Leasehold Flats And Maisonettes
For an individual leasehold flat or maisonette, the freeholder or block policy may insure the structure, foundations, roof and common parts. Leaseholders may need to understand repair responsibility under the lease and whether any previous movement was declared to the block insurer. The Blocks Of Flats Insurance page explains wider block insurance considerations.
Freeholders And Management Companies
Freeholders, residents' companies and managing agents may need to arrange cover for the entire building, including communal areas, foundations, roofs, external walls and landlord fixtures. Related pages include Freeholder Block Of Flats Insurance, Management Company Flats Insurance and Residents Management Company Flats Insurance.
Converted And Mixed-Use Blocks
Converted houses containing flats can involve different construction periods, altered loading, older foundations, extensions or former commercial layouts. Mixed-use blocks may also include shops, offices or other commercial units. Relevant pages include Block Of Converted Flats Insurance and Mixed Use Block Of Flats Insurance.
Right To Manage And Specialist Blocks
Right to Manage companies, listed blocks, retirement blocks, concrete blocks and period houses converted into flats may require additional information about construction, repairs and responsibility. Useful related pages include Right To Manage Flats Insurance, Listed Block Of Flats Buildings Insurance and Concrete Block Of Flats Insurance.
Insurers may ask who owns and insures the building, whether a block-wide claim was previously made, whether the property is purpose-built or converted, which sections of the block are affected and whether commercial units, parking areas, garages or retaining walls form part of the insured property. For wider property ownership considerations, see Property Owners Insurance.
Other Residential Property Types
Previous subsidence, structural movement or underpinning may affect many residential property types. Attached and terraced properties can involve party walls, shared structures and neighbouring movement, while conversions may involve several construction periods, altered loading, former industrial foundations or historic structural work.
Large country homes, self-build properties, mill conversions, former commercial buildings converted to homes, properties on sloping sites and homes with retaining walls, detached garages or outbuildings may also require more detailed explanation. Where the property is listed, the Listed Buildings Insurance page may be useful.
Insurance After Different Repair Methods
Underpinning is only one possible repair method. Depending on the cause, construction and professional recommendations, a property may have been repaired using traditional mass concrete underpinning, mini-piling, micropiles, beam and base underpinning, raft foundations, resin injection, ground stabilisation, crack stitching or helical reinforcement.
Other repairs may include drainage replacement, tree removal or tree management, root barriers, retaining-wall reconstruction, ground anchors, masonry rebuilding or monitoring without structural intervention.
The repair method alone will not determine acceptance. Insurers will also consider why the work was needed, who designed it, who completed it, what documentation is available and whether the property has remained stable.
Reports, Certificates And Technical Evidence
Supporting documents often help a specialist broker explain the property history to insurers. Not every document will apply in every case, and not every insurer will request every item, but clear evidence can help explain what happened and what has been done.
Structural Engineer's Report
A structural engineer's report may explain the observed cracking, likely cause, recommended investigations, repair method and professional opinion at the time of inspection.
Certificate Of Structural Adequacy
A Certificate of Structural Adequacy relates to the professional assessment and repairs recorded at that time. It is not a guarantee that movement can never occur again.
Monitoring Reports
Monitoring records, crack gauge readings, level readings, photographs and repeated inspection notes may help show whether movement has stabilised or continued.
Drainage And Tree Evidence
Drainage CCTV reports, repair invoices, arboricultural reports, root investigations and tree-management documents may be relevant where drains or trees were connected to the movement.
Ground And Mining Reports
Soil investigations, mining searches, ground-stability reports and remediation records may be important where mining, quarrying, made ground or historic excavation is relevant.
Claim And Insurance Records
Insurance claim correspondence, loss adjuster reports, repair specifications, previous schedules, current renewal invitations and evidence that a claim has closed may assist insurers.
Some properties may also have NHBC, structural warranty, latent defects, Building Control completion or contractor guarantee documentation. These documents may support the explanation of the property history, but they do not guarantee insurance acceptance.
Monitoring Periods And Evidence Of Stability
Monitoring may involve crack gauges, level monitoring, datum readings, seasonal observation, drainage investigations, tree and root investigations, soil testing, photographic records and repeated structural inspections.
There is no universal period after which every insurer will treat a property as stable. The insurer's view may depend on the cause of movement, severity, repair method, date repairs were completed, whether the original claim is closed, whether cracking has returned, the length and quality of monitoring, professional conclusions and current condition.
Properties with unresolved or active movement can be harder to place, and the information available, stage of investigation and insurer appetite will determine whether terms can be considered.
Buildings Insurance Following Subsidence
Properties with previous subsidence or structural repairs may still require suitable buildings cover for the main structure, foundations, permanent fixtures, drainage, garages, outbuildings, boundary walls and retaining structures where included by the policy.
Depending on the policy and insurer, buildings insurance may include insured damage to the main structure, foundations, permanent fixtures, domestic outbuildings, garages, boundary walls, gates, paths, driveways, drainage, retaining walls, landlord fixtures and communal parts. These items are not automatically included and must be checked in the actual policy wording.
For wider information on structural cover, rebuild values and insured damage, you may find the Buildings Insurance guide useful.
Garages, Outbuildings, Retaining Walls And Private Roads
Structural movement can affect more than the main dwelling. Detached garages, garden rooms, sheds, summer houses, permanent outbuildings, retaining walls, boundary walls, driveways and private drainage may need to be disclosed and correctly reflected within the policy where cover is required.
Where a separate garage or outbuilding has its own structural considerations, the Detached Garage Buildings Insurance page may provide useful related information.
Where ownership or liability for access routes is part of the wider property picture, the Private Road Insurance guide may be relevant.
Tree-Root Subsidence, Clay Soil And Dry Weather
Mature trees, neighbouring trees, root influence, Tree Preservation Orders, arboricultural reports, clay shrinkage, seasonal moisture changes and prolonged dry periods can all be relevant where movement has been linked to tree roots or shrinkable clay soils.
Tree removal is not always appropriate and can sometimes raise separate concerns, including possible heave where moisture returns to clay soils. Insurers may ask whether trees remain near the property, whether any tree-management conditions apply and whether an arboricultural report is available.
The focus for underwriting is usually the evidence available, the cause identified, the repair or management approach taken and whether the property has remained stable.
Historic Mining, Quarrying And Made Ground
Historic coal mining, other mineral extraction, old mine workings, mine shafts, former quarries, landfill, infilled ground, reclaimed industrial land, made ground and historic excavations may be relevant to insurer assessment where ground stability is a concern.
Historic mining or made ground does not automatically prove that a building has suffered subsidence, but insurers may request mining searches, ground-stability reports, remediation details or stabilisation records. Some risks may require highly specialist consideration.
Extensions, Conservatories And Different Foundation Types
Movement can sometimes occur where different parts of a property were built at different times or have different foundation depths. Extensions, conservatories, porches, bay windows, attached garages, converted garages and newer sections of older buildings may move differently from the original structure.
An insurer may need to know whether a previous claim or repair affected the original building, an extension or both. Differential movement at junctions between structures can require careful explanation through survey reports or engineering evidence.
Buy To Let, Commercial, Mixed-Use And Business Properties
The way a property is used can affect the underwriting information required. A property with structural history may be owner-occupied, let to tenants, used as a holiday let, used commercially, divided into several units or partly used for work.
Buy To Let And Property Owners
A rental property with previous subsidence, underpinning or structural repairs may need specialist consideration because insurers will assess the building history alongside tenant type, occupancy, loss of rent requirements and property condition. Related pages include Buy To Let Insurance and Property Owners Insurance.
Let Holiday Homes
A property let to paying guests may need different consideration from a permanently occupied home. Occupancy patterns, loss of rental income, periods of unoccupancy and additional facilities may all be relevant. Owners may find Let Holiday Home Insurance useful.
Commercial And Mixed-Use Buildings
Commercial premises, offices, shops, warehouses, industrial units, hospitality properties, divided buildings, vacant commercial buildings and mixed-use sites can all require specialist review. Related pages include Commercial Property Insurance and Commercial Property Owners Insurance.
Working From Home And Business Contents
If a property with previous movement is also used for business, insurers may need to know about home offices, business equipment, stock storage, client visits or detached garden offices. Related pages include Working From Home Insurance and Business Contents Insurance.
Business interruption, loss of rent and alternative premises are separate considerations and are only insured where included by the policy.
What Could Affect The Premium Or Terms?
Insurers may consider the cause of movement, date of the event, time since repairs, whether the claim is closed, repair method, current structural condition, monitoring history, previous claims, property construction, property age, rebuild value, location and ground conditions.
Nearby trees, drainage condition, mining history, occupancy, residential or commercial use, letting arrangements, periods of unoccupancy, subsidence excess, requested cover and supporting documentation may also be relevant.
No example price can be given because every property is assessed individually and terms depend on the insurer's view of the full risk.
Previous Insurance Claims And Underwriting Considerations
Previous subsidence, heave, landslip, escape-of-water, drainage or structural movement claims should be disclosed accurately. A specialist broker may ask for the date of the claim, the insurer involved, the settlement value, the repairs completed, whether the claim remains open and whether the existing insurer has offered renewal terms.
Every property is individually assessed by insurers. No page can confirm in advance whether cover will be accepted, restricted, excluded or subject to special terms.
Looking For Insurance Following Subsidence Or Underpinning?
Whether the property has historic subsidence, completed underpinning, drainage repairs, resin injection or previous structural movement, Quote Monkey can introduce you to a specialist broker experienced in presenting complex property risks to insurers.
Please provide as much information as possible about the cause of movement, previous claims, repairs, reports and current condition.
Realistic Subsidence And Structural Movement Claim Examples
The following examples show situations that may require investigation. Whether any claim is covered depends on the cause, policy wording, insured perils, exclusions, excesses, previous knowledge and policy conditions.
Clay Soil Shrinkage
After prolonged dry weather, clay beneath part of a house shrinks and cracking appears around windows. Soil conditions, tree influence and monitoring results may need review.
Tree-Related Movement
A mature tree near a property is investigated after cracking appears. Arboricultural advice, ownership, preservation orders and monitoring may all be relevant.
Leaking Drain
A damaged underground drain leaks over time, softening ground below part of a building. CCTV surveys, drain repairs and structural advice may be required.
Historic Movement Returns
A previously repaired wall develops new cracking. The insurer may need to establish whether the original movement returned or a new cause is present.
Flat Or Block Movement
Cracking in one flat may need to be considered alongside the whole building, common parts, elevations, garages or retaining walls, depending on the lease and block policy.
Nearby Excavation
Building work on adjoining land is followed by cracking. Insurers and advisers may consider timing, responsibility, previous defects and party wall arrangements.
What May Not Be Covered?
Depending on the policy, exclusions or restrictions may apply to pre-existing damage, known active movement, damage occurring before the policy began, failure to disclose previous movement or claims, cosmetic cracking, wear and tear, gradual deterioration, defective design, defective materials, poor workmanship, routine maintenance or damage below the policy excess.
Unauthorised building work, ongoing construction, structural alteration, existing open claims, movement excluded by endorsement or damage to land unless specifically insured may also need careful review.
Subsidence, heave or landslip may be included, restricted, excluded or subject to special terms depending on the risk. Policy wording, endorsements, excesses and exclusions should always be reviewed carefully before cover is arranged.
Subsidence Excesses And Special Terms
Subsidence-related claims often have a different excess from other buildings claims, but there is no single standard excess that applies to every property or insurer. Depending on the risk, insurers may apply a higher excess, request reports, restrict cover, exclude a specific area or exclude future subsidence-related damage.
Insurers may also require drainage repairs, tree management, regular inspection, completion of outstanding works or evidence of stability before offering terms.
Buying A House Or Flat With Previous Subsidence Or Underpinning
Buyers may wish to find out when the movement occurred, what caused it, whether a claim was made, whether the claim is closed, what repairs were completed and whether the current insurer will continue cover. Insurance indications may be worth exploring before exchange of contracts, particularly where a mortgage lender has specific requirements.
Useful information can include the structural engineer's report, Certificate of Structural Adequacy, repair invoices, guarantees, Building Control documents, drainage reports, monitoring records, tree reports and details of any subsidence exclusion or increased excess.
Buyers should not assume underpinning means the property is currently unstable, but they should understand why the work was completed and obtain suitable professional advice. In leasehold properties, responsibility for repairs and insurance may depend on the lease, freeholder and block policy.
Selling A Property With Previous Subsidence Or Underpinning
Sellers may find it helpful to gather previous claim correspondence, structural engineer reports, monitoring records, repair specifications, contractor invoices, underpinning guarantees, Certificates of Structural Adequacy, Building Control documentation, drainage reports, arboricultural reports and current insurance details.
Complete documentation may help prospective buyers, solicitors, surveyors, mortgage lenders, brokers and insurers understand the history. It does not guarantee a sale, mortgage offer or insurance quotation, but it can make the property's structural history easier to explain.
Properties Undergoing Repairs Or Renovation
Underpinning works, foundation repairs, drainage replacement, structural alteration, renovation, scaffolding, open excavations and temporary supports may change the insurance required. A specialist broker may need the scope of works, contract value, project duration, contractor details, engineer information, occupancy arrangements and site security details.
Where a property is vacant, partially occupied or undergoing major works, the existing insurance arrangements may not be suitable. Any ongoing work, structural alteration or open claim should be disclosed accurately.
Request A Specialist Subsidence Property Insurance Referral
If your property has previously suffered subsidence, has been underpinned, has undergone structural repairs or is currently being investigated for movement, Quote Monkey can introduce you to a specialist broker experienced in reviewing complex property risks.
Please provide as much information as possible about the property, the cause of movement, previous claims, repairs, reports and current condition. This can help the specialist broker understand the risk and identify insurers that may be willing to consider it.
Frequently Asked Questions
Houses with previous subsidence may be considered by specialist insurers, depending on the cause, repair history, time since the event, current condition, claims history and available documentation. Cover is subject to underwriting and insurer acceptance.
An underpinned house may be insurable through specialist markets where the property history can be properly explained. Insurers may ask why underpinning was required, when it was completed, who designed the work and whether professional sign-off is available.
A flat with previous subsidence may need to be considered under the wider block buildings insurance arrangement. The freeholder, management company or residents' company may be responsible for arranging the policy covering the structure.
In many leasehold flats, the building is insured through a block policy arranged by the freeholder, management company, residents' management company or Right to Manage company. Leaseholders should check the lease and insurance arrangements.
A block of flats with previous subsidence may be considered by specialist insurers. The broker may need details of the block construction, affected area, previous claim, repairs, monitoring, lease responsibilities and current condition.
It can do. If movement affects the structure, foundations, common parts, elevations or shared elements of the building, the history may be material to the whole block policy rather than only one flat.
A converted house containing flats may require specialist underwriting because the building may have older foundations, altered loading, extensions or mixed construction periods. Supporting reports and repair documentation may be requested.
A freeholder may be able to obtain specialist block insurance after a previous subsidence claim, subject to insurer review. The claim history, repair records, current condition and management responsibilities will usually be relevant.
A management company, residents' management company or Right to Manage company may be able to arrange insurance for an underpinned block through specialist markets. Insurers may require full details of the structural history and previous claim.
Commercial buildings with previous subsidence or structural repairs may be considered by specialist insurers. The broker may need details of the business use, construction, rebuild value, occupancy, repairs and current condition.
A listed building with previous subsidence may require specialist underwriting because age, materials, heritage requirements and repair methods can affect the risk. Insurers may request detailed reports and rebuild information.
Barn conversions and other converted buildings may be considered by specialist insurers, depending on construction, foundation history, previous agricultural or commercial use, repairs and current condition.
Some specialist insurers may consider properties repaired using resin injection or another ground-stabilisation method. Details of the system, contractor, engineer, cause of movement and completion documents may be required.
It may be possible to obtain cover after tree-root subsidence, subject to the tree history, repair work, current condition and any ongoing tree-management requirements. Tree ownership, preservation orders and arboricultural reports may also be relevant.
Properties in areas affected by historic mining may require specialist review. Mining searches, ground-stability reports and details of any previous movement or remediation work may be requested by insurers.
An extended property may be considered if the cause and extent of movement are understood. Insurers may need to know whether the original structure, extension or junction between the two was affected.
This page does not provide valuation advice. Underpinning can affect how buyers, surveyors, lenders and insurers view a property, but the value impact depends on the individual circumstances and professional advice should be obtained.
This page does not provide mortgage advice. Mortgage lender requirements vary, and buyers should speak to their lender, solicitor and surveyor before committing to a purchase.
Buyers may wish to obtain insurance indications before exchange of contracts, especially where a property has previous subsidence, underpinning, structural repairs or an increased subsidence excess.
Useful documents may include structural reports, monitoring records, Certificates of Structural Adequacy, repair invoices, guarantees, drainage reports, arboricultural reports, previous claim correspondence and current insurance details.
Depending on the property and insurer, future subsidence-related damage may be included, restricted, subject to a higher excess or excluded. Terms should be reviewed carefully before cover is arranged.
There is no universal excess that applies to every property or insurer. Subsidence excesses can vary depending on the policy, property history and underwriting decision.
There is no single period that applies to every insurer or property. Insurers may consider the date repairs were completed, the monitoring period, the cause of movement and whether any further cracking has occurred.
An open subsidence claim can make insurance more complex. A specialist broker may need details of the current insurer, claim status, investigations, monitoring, proposed repairs and likely completion timescale.
No. Quote Monkey does not inspect properties or provide structural, engineering, surveying, legal, mortgage or valuation advice. We can introduce suitable enquiries to a specialist insurance broker for insurance review.
No. Completing the referral form does not guarantee a quotation or insurance cover. Any terms will be subject to broker review, insurer acceptance, underwriting criteria, policy terms and conditions.
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Important Information
The information on this page is provided as a general guide to insurance considerations for properties with previous subsidence, structural movement, underpinning or foundation repairs. It does not constitute structural, engineering, surveying, legal, mortgage or valuation advice.
Quote Monkey can introduce suitable enquiries to an independent specialist insurance broker. Any quotation, policy terms or offer of insurance will be subject to the broker's review, insurer acceptance, underwriting criteria, policy conditions, exclusions, limits and excesses.
Property owners should answer all questions accurately and disclose relevant claims, investigations, cracking, structural movement, reports, repairs, underpinning and ongoing monitoring.