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Tyne and Wear · Subsidence Risk

Subsidence risk in Newcastle upon Tyne: what to check before buying

Newcastle bedrock is Carboniferous Coal Measures across most of the city, with widespread historic mining beneath. Superficial deposits include glacial till and river-terrace alluvium along the Tyne. Made ground is extensive in the post-industrial belt along the river and in former shipbuilding and heavy-engineering areas.

Last updated: 24 August 2026. Editorially reviewed: 20 May 2026.

Subsidence index rank

Newcastle upon Tyne ranks #31 of 46 in the UK Subsidence Risk Index

Clay band
Low–Moderate
Mining significance
Significant
Primary driver
Historic mining

Newcastle upon Tyne ranks #31 of 46 in the UK Subsidence Risk Index, sitting in a low-to-moderate shrink-swell susceptibility band, one of the lower-risk classifications BGS uses on the BGS-derived scale used to build the ranking.

Historic mining is a significant contributor to ground movement risk in Newcastle upon Tyne, alongside clay behaviour.

For Newcastle upon Tyne, historic mining, rather than clay, is the dominant local driver of ground movement risk, in line with the "Historic mining" classification the index assigns to the area.

See the full 46-city ranking or explore the UK subsidence map. This is a city-wide index, not an address-level result — check the specific property separately before offering.

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BGS clay susceptibility for Newcastle upon Tyne

BGS GeoSure rates clay shrink-swell susceptibility as low to moderate across Newcastle, lower than south-east England. The dominant ground-stability factors are mining and made ground rather than clay shrink-swell.

BGS GeoSure publishes shrink-swell susceptibility ratings at 1:50,000 scale, covering Great Britain as a premium local-level product. Conveyancing environmental searches can combine licensed ground-stability data with mining and contamination layers for property-focused due diligence.

Source boundary: MyPropertyScan's instant scanner does not query parcel-level GeoSure. It uses public BGS Engineering Geology at 1:1 million scale as a directional indicator; obtain GeoSure or a conveyancing search separately.

Trees, drainage and other risk factors in Newcastle upon Tyne

Mining subsidence and made-ground instability are the headline Newcastle factors. Trees on glacial till are a moderate-secondary risk. Steep slope sites along the Tyne valley introduce localised slope-stability questions for older terrace stock.

Three checks the survey should cover:

Mining-era subsidence in Newcastle upon Tyne

Heavy historic Tyneside coalfield mining across most of Newcastle, into Gateshead, North Tyneside and the wider Durham coalfield. Major collieries closed across the 1980s and 1990s. The Coal Authority CON29M report is essential on every Newcastle property, ordered by your conveyancer during conveyancing.

What subsidence means for your mortgage and insurance

Lenders treat historic, stabilised subsidence as standard if there is a structural engineer's report and any underpinning is documented. Active subsidence triggers retentions, specialist insurer placement, and in some cases lender refusal until remediation is complete and stable.

Insurance is the bigger ongoing constraint. A property with a prior subsidence claim sits in a constrained insurer market. The existing insurer typically continues cover but new business placement is harder. Disclosure of any prior claim is required on the seller's TA6 form.

How to check your specific address

City-wide context is orientation. Per-address checks before offer:

  1. 1Obtain address-specific ground susceptibility through a conveyancing environmental search or licensed BGS GeoSure shrink-swell data. GeoSure is a premium 1:50,000 product.
  2. 2Order a Coal Authority CON29M report if the property is in a historic coalfield boundary. Your conveyancer arranges this.
  3. 3Read the TA6 form for any prior subsidence claim, structural movement, or insurance involvement.
  4. 4Commission a RICS Level 3 (Building Survey) for any property over 60 years old in a high-clay-susceptibility area.

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Directional BGS 1:1 million engineering geology, building age, tree context and the things to ask your surveyor.

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Frequently asked questions

Is subsidence common in Newcastle upon Tyne?

Newcastle bedrock is Carboniferous Coal Measures across most of the city, with widespread historic mining beneath. Superficial deposits include glacial till and river-terrace alluvium along the Tyne. Made ground is extensive in the post-industrial belt along the river and in former shipbuilding and heavy-engineering areas. BGS GeoSure rates clay shrink-swell susceptibility as low to moderate across Newcastle, lower than south-east England. The dominant ground-stability factors are mining and made ground rather than clay shrink-swell.

Will subsidence affect my mortgage in Newcastle upon Tyne?

Lenders treat historic, stabilised subsidence as standard if a structural engineer's sign-off is in place. Active or progressive subsidence triggers retentions, specialist insurer placement, and in some cases lender refusal until remediation is complete.

What should the survey cover for subsidence in Newcastle upon Tyne?

Mining subsidence and made-ground instability are the headline Newcastle factors. Trees on glacial till are a moderate-secondary risk. Steep slope sites along the Tyne valley introduce localised slope-stability questions for older terrace stock. The surveyor should record any cracks (BRE Digest 251 categories), assess proximity of trees and drains, and recommend a structural engineer's report where category 2+ cracking or active movement is suspected.

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Sources used

We use UK public and specialist sources where they are available. Public datasets can be incomplete, delayed, or missing for some addresses. Treat them as a starting point, not as a replacement for professional advice.

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