Felixstowe · Suffolk
Extension pulling away repairs in Felixstowe
Rear and side extensions are common across Felixstowe, 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£630per junction inc VAT

- Postcodes
- IP11
- Population
- about 25,000
- Area
- Suffolk
- Pricing region
- East of England
Is Suffolk prone to ground movement?
Felixstowe, Suffolk: about 25,000 residents across postcode districts IP11. If you are just outside Felixstowe, we also cover Harwich (3 miles), Walton-on-the-Naze (9 miles) and Ipswich (11 miles).
Shrinkable clay is widespread in Suffolk. Ground movement here is more often linked to soils, drains and trees than to mining. What you mostly find across Suffolk: timber-framed and flint cottages, Victorian terraces in Ipswich and Lowestoft, and post-war estates.
Repair options we may recommend
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
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
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.
Choose the fix
The engineer decides between ties, a movement joint or underpinning. We confirm a fixed price in writing once the repair is specified, covering the junction, flashings, internal finishes and any foundation work.
Is it time for extension pulling away repairs? Common signs
- Daylight or draughts showing through the internal corner joint
- Mastic or render at the joint repeatedly splitting open
- Extension roof flashing lifting off the original wall
What should you budget for extension pulling away repairs in Felixstowe?
Guide prices below are for homes in Felixstowe, on East of England 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. | £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 |
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 Felixstowe?
Guide prices for extension pulling away repairs in Felixstowe 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 cover Felixstowe?
Yes. We take enquiries from across Felixstowe, including IP11, and from nearby places such as Harwich and Walton-on-the-Naze. Send photos for a free initial view and we will tell you what happens next.
Is the ground in Suffolk prone to subsidence?
Much of Suffolk is chalky boulder clay, with London Clay around Ipswich and Felixstowe and sandier ground in the Breckland and on the coast. The clay areas are prone to seasonal shrinkage near trees. Only an investigation can say why a particular building has moved.
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.
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 Felixstowe
- Gable end wall repairs
- Subsidence repairs
- Boundary and garden wall repairs
- Structural surveys and crack monitoring
- Crack stitching
Extension pulling away repairs near Felixstowe
Send photos of the extension junction at your Felixstowe home, inside and out, and we will give a free initial assessment and a guide price.