Abingdon · Oxfordshire
Extension pulling away repairs in Abingdon
Rear and side extensions are common across Abingdon, 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£670per junction inc VAT
- Postcodes
- OX13, OX14
- Population
- about 39,000
- Area
- Oxfordshire
- Pricing region
- South East
Is Oxfordshire prone to ground movement?
Abingdon (OX13, OX14) has around 39,000 residents and sits in Oxfordshire. Neighbouring towns we cover: Didcot (5 miles), Oxford (6 miles) and Witney (12 miles).
Shrinkable clay is widespread in Oxfordshire. Ground movement here is more often linked to soils, drains and trees than to mining. Housing stock in Oxfordshire: Cotswold stone villages, Victorian terraces in Oxford and Banbury, and large post-war and new-build estates around Didcot and Bicester.
Is it time for extension pulling away repairs? Common signs
- Patio doors or windows in the extension starting to bind
- Floor level dropping where the extension and house floors meet
- Extension roof flashing lifting off the original wall
What should you budget for extension pulling away repairs in Abingdon?
Guide prices below are for homes in Abingdon, on South East rates and including VAT. A survey or good photos let us turn them into a fixed written price.
| Item | Guide price | Per |
|---|---|---|
| Junction crack repair with stainless tiesest. | £670 – £2,250 | per junction |
| Movement joint and making goodest. | £450 – £1,350 | per junction |
| Underpinning the extension where needed | £1,100 – £2,800 | per metre of wall |
Repair options we may recommend
Junction crack repair with stainless ties
The open joint is cut out, stainless ties or helical bars are fixed across it into both the old and new masonry, and the joint is repointed or rendered to match. Inside, the corner is replastered. This suits extensions that moved once and have since stopped.
Best for: Settled extensions with a stable gap at the junction
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 to expect when we carry out extension pulling away repairs
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.
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.
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.
Your extension pulling away repairs questions
How much will extension pulling away repairs cost in Abingdon?
Guide prices for extension pulling away repairs in Abingdon start from about £670 per junction, including VAT, on South East rates. Your fixed written price follows photos or a survey and depends on the extent of the work and access.
Do you cover Abingdon?
Yes, Abingdon is covered, along with postcode districts OX13, OX14. We also cover nearby Didcot and Oxford.
Is the ground in Oxfordshire prone to subsidence?
Oxfordshire's vales sit on Oxford, Kimmeridge and Gault Clays, among the more shrinkage-prone clays in England, with Cotswold limestone in the north-west and chalk downs in the south. Only an investigation can say why a particular building has moved.
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.
Who is responsible if a recent extension is moving?
If the extension is recent, the original builder, the designer or building control records may be relevant, and you may have rights against the builder. Gather the plans, completion certificate and contract. Insurance often excludes defects in new construction, so check your policy.
Other structural repairs in Abingdon
- Concrete repairs
- Boundary and garden wall repairs
- Wall tie replacement
- Brick arch repairs
- Crack stitching
Extension pulling away repairs near Abingdon
For a no-obligation written quote to repair an extension pulling away in Abingdon, call or send a few photos with a tape measure across the gap.