A history of subsidence does not automatically make a UK property unmortgageable. The key questions are whether movement is active or historic, what caused it, what repairs were completed, whether the property is stable now, whether suitable buildings insurance is available and whether the lender’s valuer is satisfied with the property as security.
This guide focuses on the mortgage issues that matter when buying or remortgaging a residential property with current or historic subsidence. For overseas-resident borrowers, the property assessment is broadly the same, while the borrower is also assessed under the lender’s expat or non-resident criteria.
What is subsidence?
Subsidence is downward movement of the ground supporting a building. Causes can include shrinkable clay soils, tree-related moisture changes, leaking drains, historic mining or other ground conditions. Cracking alone does not prove subsidence, so the cause and whether movement is ongoing need professional assessment.
Can you get a mortgage on a property with subsidence?
Potentially, yes. Lenders do not all treat subsidence history in the same way. A property with historic movement that has been investigated, repaired where necessary and shown to be stable can be very different from a property with active movement or unresolved structural concerns.
The lender will usually rely heavily on the valuation and any supporting structural or engineering information. If the valuer considers the property unsuitable security, the mortgage can be declined even if the borrower otherwise meets affordability and credit criteria.
What will the lender want to know?
- whether subsidence is active, historic or suspected;
- what caused the movement;
- whether monitoring was carried out;
- what remedial work was completed;
- whether the property was underpinned;
- whether guarantees, reports or completion documents exist;
- whether suitable buildings insurance is available;
- whether there have been previous insurance claims; and
- what the lender’s valuer says about current condition and marketability.
Historic subsidence vs active subsidence
Historic subsidence means the issue occurred in the past and may have been resolved or stabilised. This can still affect lender appetite, but clear documentation can make the position easier to assess.
Active subsidence means movement is ongoing or unresolved. This is generally more difficult because the lender may not know the true repair cost, future value or whether the property will remain acceptable security.
Does underpinning stop you getting a mortgage?
No. Underpinning does not automatically prevent a mortgage. The lender may want to understand why it was required, when it was completed, who carried out the work and whether the building has remained stable afterwards.
Keep structural reports, specifications, guarantees, building-control records, invoices and any post-repair monitoring evidence available. The exact documents requested vary by lender and property.
Survey, structural engineer and lender valuation
The lender’s valuation is not a substitute for an independent building survey or structural assessment. A valuer may flag movement and recommend further investigation before the lender will proceed.
Where there is known or suspected subsidence, an appropriately qualified surveyor or structural engineer may be needed to establish the cause, extent of movement and current stability. Buyers should avoid relying only on cosmetic repairs or seller descriptions.
Why buildings insurance matters
A mortgage lender normally expects the mortgaged property to be adequately insured. A history of subsidence can affect availability, terms, excesses and exclusions, so insurance should be checked before exchange rather than assumed.
If the seller has an existing policy associated with a previous subsidence claim, discuss continuity and any transfer arrangements with the insurer and conveyancer. Do not assume a new insurer will offer identical terms.
Does subsidence always mean a higher mortgage rate or bigger deposit?
No. There is no universal subsidence surcharge, fixed deposit uplift or standard lower LTV. Some lenders may decline the property, some may apply restrictions, and others may be comfortable once the issue is properly documented and the valuation is satisfactory.
The borrower’s mortgage rate and LTV also depend on the wider product, borrower profile, loan size and lender criteria, so they should not be attributed automatically to subsidence alone.
Buying a subsidence property while living overseas
For an expat or overseas-resident borrower, there are two separate assessments: the borrower and the property. The lender may assess overseas income, country of residence, currency, deposit and credit evidence while also deciding whether the subsidence-affected property is acceptable security.
Living abroad does not create a separate product called an “expat subsidence mortgage”. It simply means the case must satisfy both the lender’s overseas-borrower criteria and its property criteria.
For the borrower side, see our expat mortgage underwriting guide. For the legal purchase process from abroad, see our expat conveyancing guide.
Documents worth gathering early
- structural engineer or surveyor reports;
- monitoring reports;
- details of the cause of movement;
- records of underpinning or other remedial works;
- guarantees or warranties where available;
- building-control or completion records where relevant;
- insurance claim history and current insurance information; and
- any subsequent surveys confirming stability.
What can cause a lender to decline the property?
- active or unexplained movement;
- insufficient evidence that repairs resolved the problem;
- an unsatisfactory valuation;
- difficulty obtaining acceptable buildings insurance;
- major structural works still outstanding;
- poor future marketability; or
- a property condition outside that lender’s acceptable policy.
Frequently asked questions
Can a previously underpinned house be mortgaged?
Potentially. Lenders may want evidence explaining the original issue, the work completed and the property’s stability since repair.
Will a lender accept historic subsidence?
Some will consider it, depending on the cause, severity, repairs, insurance and valuation. There is no single rule across all lenders.
Do I need a structural engineer report?
It depends on the property and what the lender’s valuer or surveyor identifies. Where movement is suspected or previously recorded, further structural evidence may be requested.
Can an expat get a mortgage on a property with subsidence?
Potentially, yes. The borrower must satisfy the lender’s overseas-resident criteria and the property must separately satisfy its valuation and property-risk requirements.
This article provides general mortgage information and is not structural, insurance or legal advice. Property and lender requirements vary by case.
