Thetford · Norfolk
Extension pulling away repairs in Thetford
An extension pulling away from a Thetford house is often a drain problem, a shallow footing or a missing tie-in, rather than a failing building. Finding out which applies decides whether the fix is a junction repair or new foundations.
Guide price from£630per junction inc VAT

- Postcodes
- IP24
- Population
- about 25,000
- Area
- Norfolk
- Pricing region
- East of England
Is Norfolk prone to ground movement?
Postcode districts IP24 cover Thetford, a Norfolk town of about 25,000 people. Neighbouring towns we cover: Bury St Edmunds (12 miles), Newmarket (19 miles) and Stowmarket (19 miles).
Parts of Norfolk have clay that can shrink near trees in dry spells. Ground movement here is more often linked to soils, drains and trees than to mining. Across Norfolk, most homes are flint and brick cottages, Victorian terraces in Norwich and Great Yarmouth, and post-war bungalows.
What to look for before calling about extension pulling away repairs
- Daylight or draughts showing through the internal corner joint
- A vertical crack or gap where the extension meets the house
- Patio doors or windows in the extension starting to bind
Extension pulling away repairs prices in Thetford
The ranges below reflect typical East of England costs for extension pulling away repairs, including VAT. Scaffold, access and making good can push a job to the top of the range.
| Item | Guide price | Per |
|---|---|---|
| Junction crack repair with stainless tiesest. | £630 – £2,100 | per junction |
| Movement joint and making goodest. | £420 – £1,250 | per junction |
| Underpinning the extension where needed | £1,050 – £2,600 | per metre of wall |
How we usually approach extension pulling away repairs
Movement joint and making good
Where some seasonal movement is expected to continue, the junction is formed into a proper flexible movement joint with a compressible filler and sealant, so the two parts can move without cracking. Flashings and internal finishes are detailed to suit.
Best for: Minor ongoing movement that does not threaten the structure
Underpinning the extension
If the extension is still dropping because its footings are too shallow or on poor ground, they are taken deeper by mass concrete, beam-and-base or mini-piles. The engineer designs the scheme, and the junction is repaired once the new foundation is in.
Best for: Active movement from shallow footings, roots or soft ground
What happens during extension pulling away repairs, step by step?
Show us the junction
Send photos of the crack outside, the internal corner and any flashing above, with a measure for scale. We give a free initial assessment and an initial view on whether the gap is likely old or still opening.
Find what is moving
An independent chartered structural engineer can inspect, and we can arrange one. A drain survey under the extension, a trial pit at its footing and tell-tale monitoring across the joint are common checks before choosing the repair.
Repair the junction
Drains are repaired first if they are leaking. The joint is then tied, formed as a movement joint or rebuilt after underpinning, with roof flashings reset so the junction stays watertight. Building control is handled where needed.
Rules for extension pulling away repairs in England
In England, underpinning and other work that alters or strengthens a wall or foundation is building work under the Building Regulations (Part A, structure), so building control approves and inspects it. Like-for-like repairs often are not, and we tell you which applies before a price is agreed. Work to a party wall, or excavation close to a neighbour’s foundations, can also need a notice under the Party Wall etc. Act 1996.
Questions about extension pulling away repairs in Thetford
What is the price of extension pulling away repairs in Thetford?
Guide prices for extension pulling away repairs in Thetford start from about £630 per junction, including VAT, on East of England rates. Your fixed written price follows photos or a survey and depends on the extent of the work and access.
Do you carry out extension pulling away repairs in Thetford?
Yes. We take enquiries from across Thetford, including IP24, and from nearby places such as Bury St Edmunds and Newmarket. Send photos for a free initial view and we will tell you what happens next.
Does the ground around Thetford cause cracking?
Norfolk is chalk covered by glacial sands, gravels and boulder clay, with fen silts in the west and soft cliffs on the north-east coast. Boulder clay areas can shrink near trees, and historic chalk mines are recorded under parts of Norwich. Only an investigation can say why a particular building has moved.
Can a drain under my extension cause it to move?
Yes, a cracked or displaced drain beneath or beside an extension can soften clay or wash away fine soil. A CCTV drain survey usually finds it. Repairing the drain is often the first and most important step before any repair to the walls.
Why is my extension pulling away from my house?
Usually because the extension and the house sit on different foundations that react differently to the ground. Shallow extension footings, leaking drains under the extension, nearby roots and weak tie-ins between old and new walls are the common causes.
More repairs we carry out in Thetford
- Wall tie replacement
- Bay window subsidence repairs
- Chimney stack repairs
- Roof structure repairs
- Boundary and garden wall repairs
Extension pulling away repairs near Thetford
Call about the cracked extension junction at your Thetford property; a free initial assessment first, then a fixed written price once the repair is specified.