Newcastle upon Tyne · Tyne and Wear
Extension pulling away repairs in Newcastle upon Tyne
Rear and side extensions are common across Newcastle upon Tyne, and so is the crack where new meets old. Usually it reflects the two parts sitting on different foundations, and the first question is whether the gap is still opening.
Guide price from£550per junction inc VAT

- Postcodes
- NE1, NE2, NE99
- Population
- about 300,000
- Area
- Tyne and Wear
- Pricing region
- North East
How do local ground conditions affect extension pulling away repairs in Newcastle upon Tyne?
Postcode districts NE1, NE2, NE99 cover Newcastle upon Tyne, a Tyne and Wear town of about 300,000 people. We also take enquiries from nearby Whickham (3 miles), Wallsend (3 miles) and Blaydon-on-Tyne (4 miles).
Clay soils are found in parts of Tyne and Wear. Historic coal workings are recorded beneath parts of Tyne and Wear, and a coal mining search is worth checking where movement is unexplained. Housing stock in Tyne and Wear: Tyneside flats and terraces, Victorian villas, inter-war council estates and post-war semis.
How much will extension pulling away repairs cost in Newcastle upon Tyne?
The ranges below reflect typical North East 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. | £550 – £1,850 | per junction |
| Movement joint and making goodest. | £370 – £1,100 | per junction |
| Underpinning the extension where needed | £920 – £2,300 | per metre of wall |
Which repair method suits a home in Newcastle upon Tyne?
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
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
What happens when we carry out extension pulling away repairs in Newcastle upon Tyne?
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.
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.
Finish and hand over
Internal corners are replastered, skirtings and coving refixed, and doors or windows in the extension eased where the movement affected them. Records of the repair and any approvals are passed to you.
Signs you may need extension pulling away repairs
- Patio doors or windows in the extension starting to bind
- Floor level dropping where the extension and house floors meet
- Daylight or draughts showing through the internal corner joint
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.
Extension pulling away repairs in Newcastle upon Tyne: questions and answers
How much will extension pulling away repairs cost in Newcastle upon Tyne?
Guide prices for extension pulling away repairs in Newcastle upon Tyne start from about £550 per junction, including VAT, on North East rates. Your fixed written price follows photos or a survey and depends on the extent of the work and access.
Do you cover Newcastle upon Tyne?
Yes, Newcastle upon Tyne is covered, along with postcode districts NE1, NE2, NE99. We also cover nearby Whickham and Wallsend.
Is the ground in Tyne and Wear prone to subsidence?
Tyne and Wear lies on the Durham and Northumberland coalfield, with old shallow workings recorded beneath parts of Newcastle, Gateshead and Sunderland, mostly under a cover of glacial clay. Only an investigation can say why a particular building has moved.
What is a movement joint?
A movement joint is a deliberate, flexible break in a wall that lets two parts of a building move slightly without cracking. It is filled with a compressible material and sealed. At an extension junction it can replace a rigid joint that keeps cracking.
Is it normal for an extension to crack at the join?
A fine crack at the junction is fairly common, especially in the first few years as a new extension settles. It becomes a concern when the gap is widening, tapering, letting in water or matched by sticking doors and sloping floors. Those signs point to continuing movement.
Other structural repairs in Newcastle upon Tyne
- Subsidence repairs
- Boundary and garden wall repairs
- Bay window subsidence repairs
- Bowing wall repairs
- Structural crack repairs
Extension pulling away repairs near Newcastle upon Tyne
Send photos of the extension junction at your Newcastle upon Tyne home, inside and out, and we will give a free initial assessment and a guide price.